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Optical Waveguides > Optical Fiber Waveguide With Cladding Optical Fiber Waveguide With CladdingOptical Fiber Waveguide With Cladding patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.11/15/07 - 20070263969 - Fiber used in wideband amplified spontaneous emission light source and the method of making the same The present invention relates to a fiber having a core of crystal fiber doped with chromium and a glass cladding. The fiber has a gain bandwidth of more than 300 nm including 1.3 mm to 1.6 mm in optical communication, and can be used as light source, optical amplifier and ... 11/01/07 - 20070253668 - Method of producing germanosilicate with a high refractive index change The present invention relates to a method of producing germanosilicate. The formed germanosilicate comprises a refractive index change Δn. The method includes forming a gel from a sol comprising germaniumoxide, or a precursor thereof, and silicate, or a precursor thereof, by means of a sol-gel process. The method further includes ... 10/25/07 - 20070248307 - Transparent light emitting members and method of manufacture Light emitting members or illuminators in the form of a light guide which may comprise one or more flat optical fibers having a pattern of U shaped notches or grooves in at least one side to cause conducted light to be emitted therefrom. A laser may be used to cut ... 10/11/07 - 20070237476 - Lithium niobate coated optical fiber apparatus and method An optical fiber sensor having a central core, a cladding layer disposed about the central core, and a thin film of lithium niobate positioned between the core and the cladding layer. Each of the cladding layer and the central core are made from glass materials having different indices of refraction. ... 10/04/07 - 20070230883 - Spiral multilayer fibers A spiral wound fiber that includes birefringent interfaces is useful in different optical devices. One type of wound fiber includes at least first and second material layers. At least one of the layers is polymeric and at least one of the layers is birefringent. The spiral wound fiber may be ... 09/27/07 - 20070223867 - Optical device for a display having tapered waveguide and process for making the same Disclosed is an optical device for a display having a tapered waveguide and a method of fabricating such devices. In order to reduce light absorption inside the waveguide, a light-absorbing material is coated on the front surface only of the optical device Alternatively, a space adjacent to the waveguide is ... 09/06/07 - 20070206911 - Gold metal cylinder fiber An optical fiber having a thin layer of gold positioned between the core and cladding. The gold layer is vacuum deposited on a rotating clean glass rod which will become the fiber core. The rod is inserted into a tube that will form the cladding of the fiber. The tube ... 09/06/07 - 20070206910 - Optical fibers and optical fiber devices with total dispersion greater than material dispersion Disclosed are optical fiber devices incorporating optical fibers with total dispersion greater than material dispersion, and with preferred dispersion values less than +50 ps/nm-km. The desired dispersion values are obtained when light resides substantially in a single higher order mode (HOM) of the fiber, typically the LP02 mode. The optical ... 08/23/07 - 20070196062 - Optical fiber An optical fiber includes a clad portion and a core portion surrounded by the clad portion. Here, the clad portion is formed by substantially pure quartz, and the core portion has a higher refractive index than the clad portion. The optical fiber is characterized in that a relative refractive index ... 08/16/07 - 20070189686 - Photonic-bandgap fiber with a core ring A photonic-bandgap fiber includes a photonic crystal lattice with a material having a first refractive index and a pattern of regions formed therein. Each of the regions has a second refractive index lower than the first refractive index. The photonic-bandgap fiber further includes a core and a core ring surrounding ... 08/16/07 - 20070189684 - Single-mode optical fiber where ws and wb in the formula (1) represent dimensionless weighting factors and are set within a range that satisfies the formulas (2) and (3). ... 08/16/07 - 20070189683 - Sleeved optical fiber for reduced lateral loss and method for making the same A fiber optic, and method for making the same, having glass cladding diameters, or overall glass diameters, or glass-clad sections upon polymer clad fiber, that are large than the bulk of the fiber. ... 08/16/07 - 20070189682 - Optical components An optical component as an embodiment of the present invention comprises an optical waveguide. This optical waveguide is a single optical waveguide having a first position and a second position along a longitudinal direction thereof. In this optical waveguide, cross-sectional refractive index profiles vary along the longitudinal direction between the ... 08/09/07 - 20070183728 - Method of manufacturing an optical fibre having variations in the refractive index An optical fibre for propagating a signal in different modes, including a longitudinal length “a” of a change in the tension buildup in the optical fibre and a longitudinal distance “L” between two such changes are in accordance with the equation, a<=0.5 L, for at least part of the optical ... 08/02/07 - 20070177845 - Directional light beam generators Directional light beam generators are implemented in waveguides with tilted core structures. The waveguides have cores, cladding and jacket layers. A directional light beam with small divergent beam angle is generated after propagating through the waveguides. Divergent light beams with large beam sizes can be converted into beams with small ... 07/26/07 - 20070172182 - Multimode optical fiber for high rate lan, method for manufacturing the same , and test bed thereof Disclosed is a method for manufacturing a multimode optical fiber for high data rate LAN using MCVD, which includes a deposition process for forming a clad layer and a core layer, doped with an additive for controlling a refractive index, on an inner wall of a quartz tube by injecting ... 07/26/07 - 20070172181 - Curable resin composition for optical waveguide, curable dry film for optical waveguide, optical waveguide and method for forming core part for optical waveguide A curable resin composition for optical waveguide comprising, as essential components, a copolymer (A) of a radical-polymerizable compound (a) having an acid anhydrous group and/or an acidic group carrying a blocked acid group, and a radical-polymerizable unsaturated group in the molecule, with other radical-polymerizable compound (b), a polymerizable unsaturated compound ... 06/28/07 - 20070147756 - Single-mode optical fiber A single-mode optical fiber has a cut-off wavelength of 1260 nm or less, a zero-dispersion wavelength in the range of 1300 nm to 1324 nm, a zero-dispersion slope of 0.093 ps/nm2/km or less, a mode field diameter at a wavelength of 1310 nm in the range of 5.5 μm to ... 06/28/07 - 20070147755 - Optical fiber and optical module An optical fiber capable of effectively suppressing stimulated Brillouin scattering, and an optical module including the fiber are provided. The fiber includes a core region, and a cladding region having a refractive index lower than that of the core region and an acoustic velocity higher than that of the core ... 06/28/07 - 20070147754 - Optical fiber An optical fiber is described in which the cladding is provided with a refractive index that increases in a radially outward direction. In particular embodiments the refractive index of the cladding increases monotonically from a low value to a value close to or higher than the refractive index of the ... 06/28/07 - 20070147752 - Photonic crystal fibers and systems using photonic crystal fibers In general, in one aspect, the invention features methods that include guiding radiation at a first wavelength, λ1, through a core of a photonic crystal fiber and guiding radiation at a second wavelength, λ2, through the photonic crystal fiber, wherein |λ1−λ2|>100 nm. ... 06/28/07 - 20070147751 - Optical fiber with specialized index profile to compensate for bend-induced distortions An optical fiber that exhibits reduced mode distortions as the fiber is bent is formed by properly defining its refractive index profile during fabrication. The as-fabricated profile is defined as a “pre-distorted” profile that takes into account the gradient introduced by bending the fiber. A parabolic index profile is one ... 06/07/07 - 20070127877 - Amplifying optical fiber The invention consists in an amplifying optical fiber comprising a core containing a dopant and a cladding, wherein said core comprises a monomode core intended to propagate an optical signal, quantum dots of a semiconductor material being disposed in or near said monomode core, and a multimode core surrounding the ... 05/24/07 - 20070116418 - Low attenuation non-zero dispersion shifted optical fiber An optical waveguide fiber having a zero-dispersion wavelength less than 1450 nm, a dispersion slope at a wavelength of 1550 of less than 0.06 ps/nm2/km nm, and attenuation at a wavelength of 1550 nm less than 0.190 dB/km. Optical fibers are disclosed that exhibit an effective area at a wavelength ... 05/24/07 - 20070116417 - Polarization-maintaining optical fiber and optical fiber gyro A polarization-maintaining optical fiber comprises: a core; a pair of stress-applying parts disposed one at each side of the core; and a cladding which surrounds the core and the stress-applying parts; wherein when the polarization-maintaining optical fiber is used at a wavelength of 0.81 μm to 0.87 μm, a cut-off ... 05/24/07 - 20070116416 - High sbs threshold optical fiber with aluminium dopant An optical fiber comprising a core having a refractive index profile and a centerline; and a cladding layer surrounding and directly adjacent the core; wherein core includes updoping material and is doped with Aluminum in at least one region of the core, such that either: (a) the average longitudinal acoustic ... 05/17/07 - 20070110377 - High air fraction photonic band gap fibers A photonic band gap fiber and method of making thereof is provided. The fiber is made of a non-silica-based glass and has a longitudinal central opening, a microstructured region having a plurality of longitudinal surrounding openings, and a jacket. The air fill fraction of the microstructured region is at least ... 05/17/07 - 20070110376 - Composite cable A composite cable to be laid by being drawn or blown into a cable tube, which has at least two insulated copper wires (1, 2) which are stranded with one another, and at least one single-fiber optical waveguide (3, 4) and a cable sheath (5). The insulation of the copper ... 05/10/07 - 20070104431 - Multi-segment photonic-crystal-rod waveguides for amplification of high-power pulsed optical radiation and associated method A method and apparatus use a photonic-crystal fiber having a very large core while maintaining a single transverse mode. In some fiber lasers and amplifiers having large cores problems exist related to energy being generated at multiple-modes (i.e., polygamy), and of mode hopping (i.e., promiscuity) due to limited control of ... 05/10/07 - 20070104430 - Optical fiber devices using component insertion The present invention provides an optical fiber device that takes advantage of the fiber structure to construct mechanically stable devices with components inserted in the optical path. An optical component is inserted in a cavity transversally machined across an optical fiber. The component is secured in the cavity and functionally ... 05/03/07 - 20070098344 - Forming of a cavity in an insulating layer A method for forming, by dry etch, an opening of a given shape in a silica glass layer, the layer having a doping profile similar to the shape and the etch plasma being a non-carbonated fluorinated plasma causing a non-directional etching. ... 04/26/07 - 20070092191 - Optical fiber having reduced hydrogen induced loss and the method for producing the same A method for producing optical fiber having reduced hydrogen induced loss is provided wherein the optical fiber is treated with deuterium gas for a predetermined duration. The predetermined duration of deuterium treatment is determined based on three factors, that is, a) the concentration of deuterium at which fiber is to ... 04/26/07 - 20070092190 - Chromatic dispersion-compensating optical fibre in the s-band using a higher order mode The invention relates to an chromatic dispersion-compensating optical fibre in the S-band, for use in compensating for the chromatic dispersion of either a standard SMF optical fibre or of an NZ-DSF optical fibre, carrying an optical signal in the spectral band in use, which is the S-band extending from 1460 ... 04/19/07 - 20070086714 - Conical-wedge-shaped lensed fiber and the method of making the same The present invention relates to a conical wedge-shaped lensed fiber and the method of making the same. The method comprises: (a) providing an optical fiber having a central axis and an end; (b) machining the end of the optical fiber to form a flat end face; (c) machining the end ... 04/12/07 - 20070081779 - Optical fiber with reduced stimulation brillouin scattering An optical fiber having a given refractive index profile comprises a core region and a cladding region. The core region includes at least two co-dopants and the concentration of at least one of said core dopant varies continuously over the entire core region. The optical fiber has, at a wavelength ... 04/12/07 - 20070081778 - Configuring optical launch powers in optical fiber transmission lines A method includes transmitting optical signals through a heterogeneous sequence of spans of an all-optical transmission line. Each span has an optical transmission fiber connected to an optical amplifier. Each amplifier launches the signals into a sequential remainder of the line. The transmitting includes launching the optical signals into the ... 03/22/07 - 20070065082 - Method for preparation of core rod assembly for overcladding, and perform and fiber produced from such core rod assembly A method for preparation of core rod assembly suitable for overcladding comprising the steps of preparing core rod having reduced diameter, fixing glass rods at each of the opposite ends of the core rod having reduced diameter characterized in that the core rod with fixed glass rods at its opposite ... 03/22/07 - 20070065081 - Compensating fiber for cummulated chromatic dispersion and chromatic dispersion slope A multimode fiber having an index profile such that, for a propagation mode other than the fundamental mode and at a wavelength of 1550 nm, the fiber presents a positive chromatic dispersion greater than or equal to 50 ps/run/km, a positive chromatic dispersion slope and a figure of merit (FOM) ... 03/15/07 - 20070058914 - Tunable fiber amplifier and laser The present invention has a core and at least one cladding, where, by changing the temperature of the cladding, the material dispersion characteristic of the cladding is changed and a refractive index is varied to make fundamental-mode cutoff tunable as well; and the difference between dispersion slopes of core and ... 03/08/07 - 20070053640 - Photonic crystal fibers having a preferred bending plane and systems that use such fibers In general, in a first aspect, the invention features photonic crystal fibers that include a core extending along a waveguide axis, a confinement region extending along the waveguide axis surrounding the core, and a cladding extending along the waveguide axis surrounding the confinement region, wherein the cladding has an asymmetric ... 01/25/07 - 20070019918 - Apparatus and method for suppression of stimulated brillouin scattering in an optical fiber A technique for suppressing stimulated Brillouin scattering (SBS) in fibers intended to handle high powers. A fiber is embedded in an elongated embedding material to form an embedded fiber structure. The embedded fiber structure is formed either as a cantilevered beam or as one or more turns around a circular ... 01/25/07 - 20070019917 - Optoelectronic fiber photodetector The invention provides an optical fiber photodetector including a photoconductive element, such as a semiconducting element, having a fiber length. The semiconducting element is characterized as a non-composite material in at least one fiber direction. At least one pair of conducting electrodes is in contact with the semiconducting element along ... 01/11/07 - 20070009218 - Optical fiber and optical transmission line and optical communication system including such optical fiber Optical fibers to form an optical transmission line suitable for WDM transmission in a wide-spreading wavelength band, having the following characteristics and parameters: a dispersion in absolute value of 0.5 ps/nm/km to 9 ps/nm/km in a wavelength band of 1430 nm to 1625 nm, a dispersion slope in absolute value ... 01/11/07 - 20070009217 - Optical fiber article and methods of making A method of making an optical fiber article can include providing an optical fiber including a least a core; providing a preform; and subsequent to the foregoing providing of the optical fiber and the preform, drawing the preform so as to dispose a region about the optical fiber. An optical ... 01/11/07 - 20070009216 - Photonic bandgap optical waveguidewith anti-resonant core boundary Improved photonic band-gap optical fibre. The present invention relates in particular to improved photonic band-gap optical fibres that can confine light to a core region of the fibre by the action of both a photonic band-gap cladding and an antiresonant core boundary, at the interface between the core and cladding. ... 01/04/07 - 20070003198 - Low loss optical fiber designs and methods for their manufacture The specification describes an improved optical fiber produced by a hybrid VAD/MCVD process. The core of the fiber is produced using VAD and the inner cladding layer has a depressed index and is produced using MCVD. In preferred embodiments, the optical power envelope is essentially entirely contained in VAD produced ... 01/04/07 - 20070003197 - Method and device for manufacturing optical preforms, as well as the optical fibres obtained therewith The present invention relates to a method and a device for manufacturing optical performs, in which one or more layers of glass, doped or undopod, are deposited onto the internal surface of a hollow substrate tube, which deposition is effected by supplying one or more reactive gas mixtures of glass-forming ... 12/28/06 - 20060291789 - Photonic crystal fibres comprising stress elements A photonic crystal fibre includes a core region for propagating light in a longitudinal direction of the fibre, a cladding region surrounding the core region, the cladding region including micro-structural elements extending in the longitudinal direction. The cladding region further includes at least one stress element having a coefficient of ... 12/28/06 - 20060291788 - Optical fiber In one aspect, the invention relates to optical fibers and systems that include such fibers. In another aspect, the invention provides an optical fiber that includes a core, a cladding surrounding the core, a layer surrounding the cladding, and a region between the layer and the cladding. The region can ... 12/21/06 - 20060285809 - High sbs threshold optical fiber with fluorine dopant The optical fiber comprises: (a) a core having a refractive index profile and a centerline; and (b) a cladding layer surrounding and directly adjacent the core; wherein core includes updoping material and is doped with F in at least one region of the core, such that either: (a) the average ... 12/07/06 - 20060275002 - Modular unit for the distribution of the light flow of a cold light source The present invention is directed to a modular unit for the distribution of the light flow of a cold light source which makes it possible to combine different illumination methods in mixed-light operation with only one individual high-power cold light source and to switch between illumination methods. In the modular ... 11/30/06 - 20060269201 - Microstructuring optical wave guide devices with femtosecond optical pulses The present invention is directed to the creation of zones of permanently altered refractive index characteristics in glass waveguiding devices, including optical fibers and optical waveguides pre-existed in a glass substrate. Such zones in which the refractive index has been permanently altered are created in glass using a very high ... 11/30/06 - 20060269200 - Large mode area fibers using higher order modes The specification describes an optical fiber device wherein a LOM is converted to an HOM prior to entering the gain section. The gain section is a few mode fiber that supports the HOM. The output from the gain section, i.e. the HOM, may be utilized as is, or converted back ... 11/23/06 - 20060263022 - Plastic photonic crystal fiber for terahertz wave transmission and method for manufacturing thereof The present invention relates to a plastic photonic crystal fiber for terahertz wave transmission and a method for the manufacturing thereof. More particularly, the present invention is directed to a plastic photonic crystal fiber that can be easily manufactured and has low loss characteristics to be used as a waveguide ... 11/23/06 - 20060263021 - Plastic photonic crystal fiber for terahertz wave transmission and method for manufacturing thereof The present invention relates to a plastic photonic crystal fiber for terahertz wave transmission and a method for the manufacturing thereof. More particularly, the present invention is directed to a plastic photonic crystal fiber that can be easily manufactured and has low loss characteristics to be used as a waveguide ... 11/23/06 - 20060263020 - Up-conversion optical fiber laser apparatus The invention provides an optical fiber laser apparatus. In the invention, an excitation light source outputs light of a given wavelength. A first optical fiber generates light of a plurality of wavelengths including light of a first wavelength by up-conversion from the output light. Also, a first resonator includes first ... 11/23/06 - 20060263019 - Multimode optical fiber A core part of a multimode optical fiber including the core part and a cladding part has a structure composed of a plurality of concentric layers in which a refractive index is decreased stepwise from a first core layer as an innermost layer to a third core layer as an ... 11/23/06 - 20060263018 - Optical fiber for amplification, optical amplifying apparatus, light source apparatus, photo-therapy apparatus, and exposure apparatus The present invention relates to an optical fiber for amplification, an optical amplifying apparatus, and so on, having a structure for enabling increase of power of output light, suppression of occurrence of nonlinear optical phenomena, and compact storage all together. The optical amplifying apparatus comprises an optical fiber for amplification ... 11/16/06 - 20060257087 - Method of transmitting an optical signal in an optical transmission system and optical transmission system for implementing such a method Described is a method of transmitting an optical signal in an optical transmission system. The method comprises: providing a length of an optical fiber having a zero chromatic dispersion wavelength, wherein the optical fiber belongs to an optical fiber group and wherein the optical fiber group comprises optical fibers having ... 11/16/06 - 20060257086 - Optical fiber coiled cord An optical fiber coiled cord having a coil construction in which an optical fiber cord is spirally bent to obtain lengthwise stretchability, wherein the fiber coiled cord is provided with a stretch length control member which restricts lengthwise elongation. ... 11/16/06 - 20060257085 - Fiberoptics, fiberoptic transmission line and optical transmission system The present invention provides an optical transmission system and so on having a structure that enables to reduce variations between wavelengths in chromatic dispersion over a wide wavelength range and control non-linear optical effects. An optical fiber transmission line comprises a first optical fiber having a positive chromatic dispersion such ... 11/09/06 - 20060251367 - Fiber optic coupler, optical fiber useful with the coupler and/or a pump light source, and methods of coupling light An optical fiber coupler can include at least a first input optical fiber and an output optical fiber, where the first input optical fiber can comprise an antiguiding core, a first cladding disposed about the antiguiding core and a second cladding disposed about the first cladding so as to tend ... 11/02/06 - 20060245706 - Method and system for the controlled production of polarization mode dispersion A method and a system to produce, either in numerical simulations or in experiments, specified amounts of first, second and higher order PMD in a controlled manner, in particular large amounts. Parameters can be adjusted to obtain specific ranges of first, second and higher order PMD, and importance sampling can ... 11/02/06 - 20060245705 - Method of making optical fiber and optical fiber made by the method Provided is a method of manufacturing an optical fiber preform from which an optical fiber having the desired characteristics can easily be produced. The method comprises the steps of: (1) preparing an intermediate preform for manufacturing an optical fiber preform; (2) measuring a refractive index profile in a radial direction ... 11/02/06 - 20060245704 - Optical fiber amplifier and optical amplifying method employing it, laser oscillating method, laser amplifier and laser oscillator, and laser and laser machining apparatus both employing laser oscillator A small size and high efficiency laser oscillation apparatus capable of obtaining high output and high beam quality laser light is provided. First waveguide (21) (refractive index=n1) for transmitting excitation light, second waveguide (22) composed of core (23) (refractive index=n3) for generating laser light and clad (24) (refractive index=n2) for ... 10/26/06 - 20060239627 - Microstructured optical fibre A microstructured optical fibre has a core region with a material having a refractive index nco and a microstructured region surrounding the core region with a background material having a refractive index nm which is lower than the refractive index nco. The microstructured region has a plurality of microstructures having ... 10/19/06 - 20060233502 - Method for treating optical fiber and apparatus for treating optical fiber A method of treating optical fiber includes at least a first step of creating a reduced-pressure atmosphere in a space which holds the optical fiber, and a second step of introducing to the space a deuterium-containing gas so as to expose the optical fiber to the gas. ... 10/05/06 - 20060222306 - Optical fiber An optical fiber resistant to hydrogen-induced attenuation losses at both relatively low and relatively high temperatures includes a substantially pure silica core and a hydrogen retarding layer. The hydrogen retarding coating may be made of carbon, metal, or silicon nitride. The fiber may also include a cladding layer, a second ... 10/05/06 - 20060222305 - Helical fiber optic mode scrambler The methods and apparatus of the present invention provide advantages for remote laser delivery systems that conduct high levels of light energy through a fiber optic cable to a selectable target surface. Helical fiber optic mode scramblers in accordance with the present invention are an integral portion of a fiber ... 09/28/06 - 20060215975 - Apparatus for measuring differential mode delay of multimode optical fiber Disclosed herein is an apparatus for measuring the differential mode delay of multimode optical fiber. The apparatus includes a tunable laser source, an interferometer, a data collecting device, and a computer. The tunable laser source outputs light, frequencies of which vary linearly. The interferometer generates multimode light and single mode ... 09/14/06 - 20060204194 - Method and apparatus for creating circumferential flat surfaces on round cross section polymer optical fiber For creating flat surfaces along the circumference of a polymer optical fiber of a round cross section by machining, the polymer optical fiber is wound onto a mandrel in a plurality of windings, the mandrel having a generally non-circular cross section with at least one projecting sector in which the ... 09/14/06 - 20060204193 - Drawing method for bare optical fiber, manufacturing method for optical fiber, and optical fiber A drawing method for a bare optical fiber, comprises the steps of: melting an optical fiber preform using a heating device and drawing the bare optical fiber; and naturally cooling down the bare optical fiber or forcibly cooling down the bare optical fiber by a cooling device after the heating ... 09/14/06 - 20060204192 - Optical waveguide using polymer composed of silsesquioxane derivative Y is a group represented by the formula (a) or (b). ... 09/14/06 - 20060204191 - Transmission fibre with optical amplification and method for producing same A transmission fibre with optical amplification, comprising a core and a cladding. The core material is doped with a first dopant of a material having a higher index of refraction than the material of the cladding and with a second dopant of a material that converts pump energy in the ... 09/14/06 - 20060204190 - Large mode-area microstructure optical fiber A large mode-area microstructured optical fiber includes a core, at least one axially oriented element disposed in the core, and a cladding about the core. The axially oriented element has a refractive index less than a refractive index of the core. The axially oriented element(s) defines sectional regions in the ... 09/14/06 - 20060204189 - Process for producing optical fiber preform, process for producing optical fiber and optical fiber Methods of manufacturing an optical fiber preform and an optical fiber, and an optical fiber formed by this method of manufacturing an optical fiber are provided, the optical fiber preform having a desired refractive index profile and being capable of suppressing an increase in loss due to the absorption by ... 09/14/06 - 20060204188 - Apparatus for providing optical radiation Apparatus for providing optical radiation (10) comprising a pump array (8) for providing pump radiation (7), a first pump combiner (1), and a waveguide (3), wherein the pump radiation (7) from the pump array (8) is coupled into the waveguide (3) via the first pump combiner (1), and wherein the ... 09/07/06 - 20060198589 - Optical fiber and optical interconnection system A mode field diameter of an optical fiber at a wavelength of 1300 nm is equal to or larger than 5.4 μm. A light of a wavelength of 1250 nm is propagated through the optical fiber in a single mode. A bending loss of the optical fiber with a bending ... 08/31/06 - 20060193581 - Method for the production of an optical fibre, preform, and an optical fibre A preform for manufacturing an optical fibre or an optical fiber, where the variation in the refractive index contrast of the preform does not exceed an absolute value of 2%, measured for a preform having a length of at least 60 cm, or the deviation of the preform in relation ... 08/31/06 - 20060193580 - Optical communication system In an optical communication system in which communication is conducted by transmitting light through a plastic optical fiber with a core diameter in the range from 300 to 600 μm, the average beam diameter and beam divergence angle expressed in terms of numerical aperture (NA) of the light at the ... 08/24/06 - 20060188205 - Optical transmission line Provided is an optical transmission line in which the suppression of SBS and the achievement of other transmission characteristics can compatibly be attained. The optical transmission line is formed by connecting a first optical fiber and a second optical fiber, or by connecting a group of first optical fibers and ... 08/24/06 - 20060188204 - Method and apparatus for reducing feedback within an optical waveguide An optical waveguide device is disclosed herein and includes a core having a first index of refraction and configured to propagate at least one optical signal therethrough, the core having a first end and a second end, wherein at least one of the first end and the second end forms ... 08/10/06 - 20060177187 - Birefringent photonic bandgap optical waveguide A birefringent elongate waveguide for guiding light, comprises: a core region (110), comprising an elongate region of relatively low refractive index; and a cladding region (100), comprising elongate regions (105) of relatively low refractive index interspersed with elongate regions (117,120) of relatively high refractive index. In a transverse cross-section of ... 08/03/06 - 20060171647 - Enhancing fiber-optic sensing technique using a dual-core fiber An optical fiber for use in fiber optic sensing of a test sample includes a first core and a second core. The second core is generally coaxially disposed within the first core and is sized smaller than the first core. The second core is capable of delivering pulsed laser energy ... 08/03/06 - 20060171646 - Large diameter optical waveguide, grating and laser A large diameter optical waveguide, grating, and laser includes a waveguide 10 having at least one core 12 surrounded by a cladding 14, the core propagating light in substantially a few transverse spatial modes; and having an outer waveguide dimension d2 of said waveguide being greater than about 0.3 mm. ... 07/13/06 - 20060153511 - Light emitting device The invention relates to a light emitting device consisting of one or more light sources coupled to a light guide containing diffuser particles having a refractive index close to the refractive index of the core of the light guide. The diffuser particles cause a scattering of the light emitted from ... 07/06/06 - 20060147167 - Advanced dispersion map for dsf transmission system It is proposed a method for processing optical signals to be transmitted through a succession of transmission lines spans made out of DSF and a system architecture allowing the implementation of such a method for compensating dispersion occurring at the transmission path without suffering too much from any cross-phase modulation. ... 07/06/06 - 20060147166 - Optical fiber having a low polarization mode dispersion and process and apparatus for producing it An apparatus for producing a low-PMD optical fiber having a furnace for melting a lower portion of an optical preform; a traction device for pulling an optical fiber from the lower portion of an optical preform; a spinning device for imparting a substantially constant and unidirectional spin to the optical ... 06/29/06 - 20060140560 - Optical fiber and a method for fabricating a low polarization-mode dispersion and low attenuation optical fiber A method of fabricating an optical waveguide fiber that includes the steps of providing a cylindrical glass optical fiber preform having a longitudinally extending centerline hole, and closing the hole under conditions suitable to result in uniform and symmetric hole closure. The method may include first plugging a first end ... 06/29/06 - 20060140559 - Optical fiber for long period grating, long period grating component and manufacturing method of the same This invention relates to an optical fiber for long period grating (LPG), LPG components, and manufacturing method of LPG used as a mode coupler, an optical filter, etc. The optical fiber for LPG comprises a core layer, a first cladding layer that surrounds said core layer and transmits the cladding ... 06/22/06 - 20060133751 - Method of imparting twist to optical fiber A method for producing low-PMD fiber, in which a glass fiber is drawn from an optical fiber perform by a tractor which pulls such optical fiber from said perform; subsequent to said tractor pulling the fiber is twisted about its axis to increase the magnitude of twist which is imparted ... 06/15/06 - 20060127018 - Treatment method for optical fiber A treatment method for an optical fiber including accommodating an optical fiber inside a treatment chamber; introducing a deuterium containing gas into the treatment chamber; and in a deuterium treatment step, exposing the optical fiber to atmosphere of the deuterium containing gas. In the deuterium treatment step, a deuterium concentration ... 06/01/06 - 20060115224 - Single-mode optical fiber, optical fiber cable, optical fiber cord, and method for ensuring service life of optical fiber A single-mode optical fiber, cable, cord, and a method for ensuring a service life of the fiber are provided. The fiber has a core and a cladding, the fiber having a cut-off wavelength that exhibits a single-mode transmission in a 1.31 μm wavelength band. A relative refractive index difference of ... 05/25/06 - 20060110112 - Optical fiber for wdm system and manufacturing method thereof An optical fiber having a length of 1 km or more with average transmission loss in a wavelength band of 1383 nm being less than average transmission loss in a wavelength band of 1310 nm, wherein a maximum value of any 1 km section loss in the wavelength band of ... 05/18/06 - 20060104582 - Fabrication of microstructured optical fibre Microstructured optical fibre is fabricated using extrusion. The main design of optical fibre has a core suspended in an outer wall by a plurality of struts. A specially designed extruder die is used which comprises a central feed channel, flow diversion channels arranged to divert material radially outwards into a ... 05/04/06 - 20060093295 - Multimode fiber transmission system An optical signal propagating through a transmission line of a multimode fiber is branched by an MMF coupler of a reception device, and the intensity of the signal is detected by a MMF monitor PD. After connecting from the multimode fiber to a single-mode fiber, the optical signal is branched ... 05/04/06 - 20060093294 - Optical fiber with suppressed stimulated brillouin scattering and method for making such a fiber An optical fiber for the transmission of electromagnetic energy, where the fiber can have increased input power threshold for the onset of Stimulated Brillouin Scattering (SBS). The fiber can comprise a core and a cladding disposed about the core. The core can have a distribution of velocities for an acoustic ... 05/04/06 - 20060093293 - Optical fibers The present invention provides an optical fiber enabling signal transmission in a wider band, which is applicable to optical transmission not only in the 1.3 μm wavelength band but also in the 1.55 μm wavelength band, as a transmission medium of a WDM optical communication system capable of transmitting signal ... 04/27/06 - 20060088261 - Rare earth doped single polarization double clad optical fiber and a method for making such fiber An optical fiber, comprising: (i) a rare earth doped silica based elongated core with a first refractive index (n1) with an aspect ratio of 1:5 to 1; (ii) a silica based moat abutting and at least substantially surrounding the core, the moat having a refractive index n2, wherein n2<n1; (iii) ... 04/27/06 - 20060088260 - Photonic bandgap optical waveguide Novel preforms and methods of making novel preforms are described. The preforms are suitable for being drawn into photonic bandgap optical fibres. In one form, the preform comprises a stack of elongate members having, in transverse cross section, a triangular close-packed arrangement of circular cross section capillaries, which define interstitial ... 03/23/06 - 20060062532 - Optical transmission fiber with thermal management for high-power applications An optical transmission fiber including a core having a first index of refraction, a cladding material located around the core and having a second index of refraction less than the first index of refraction, a first coating material located around a first portion of the cladding material and having a ... 03/23/06 - 20060062531 - Fabrication of optical confinements The present invention relates to optical confinements, methods of preparing and methods of using them for analyzing molecules and/or monitoring chemical reactions. The apparatus and methods embodied in the present invention are particularly useful for high-throughput and low-cost single-molecular analysis. ... 03/16/06 - 20060056785 - Optical transmission line constituting method, optical transmission line and optical fiber The present invention relates to a method of forming a transmission line capable of measuring more precise connection losses at low cost, and so on. At least of first and second optical fibers to be connected as components of the optical transmission line is selected such that, at one wavelength ... 03/09/06 - 20060051039 - Nonlinearity compensation in a fiber optic communications system An optical communications link is described, comprising first and second fiber lines in substantial scaled translational symmetry by a common scaling factor with respect to a second-order dispersion coefficient profile (oppositely signed) and with respect to at least one of a loss/gain coefficient profile and a nonlinear coefficient-power product profile ... 03/02/06 - 20060045447 - Method of processing optical fiber There is provided a method of processing an optical fiber having a core and a clad. The optical fiber has a first facet and a second facet. The method includes fixing the optical fiber in a state in which at least a portion thereof is bent in a predetermined curvature ... 03/02/06 - 20060045446 - Optical fiber with birefringence and large mode field diameter According to the present invention the optical fiber includes a core with a first refractive index (n1) and the innermost core region with the refractive index n0, a cladding surrounding the core, the cladding having a third refractive index (n3), wherein n1>n3 and n0<n1. According to some of the embodiments ... 02/23/06 - 20060039661 - Fiber for compensation of the cumulative chromatic dispersion in a fibre with negative chromatic dispersion The fibre is adapted to compensation of the chromatic dispersion and chromatic dispersion slope of an optical fibre with negative chromatic dispersion. It has, in a propagation mode other than the fundamental mode, a positive chromatic dispersion and a negative chromatic dispersion slope. The fibre can be used in compensation ... 02/16/06 - 20060034573 - Method for compensating modal dispersion in multimode optical fiber transmission path In an optical transmission path including multimode optical fibers, modal dispersion is reduced so that signal light can be transmitted at high speed and across a broad band, at low-cost and over a long distance. To reduce modal dispersion, when the transmission path is constructed by coupling a plurality of ... 02/09/06 - 20060029345 - Method of processing optical fiber A method of processing an optical fiber having a first facet and a second facet is provided. The method includes the steps of applying a photosensitive material to a region on the first facet at least including an entirety of a core in a generally uniform thickness, irradiating light of ... 02/09/06 - 20060029344 - Fiber optic article including fluorine A fiber optic article, such as an optical fiber or an optical preform, can include a core comprising a concentration of erbium, a concentration of fluorine and a concentration of ytterbium for sensitizing the erbium by absorbing pump light and transferring energy to the erbium. The erbium can provide light ... 02/09/06 - 20060029343 - Fiber optic article with inner region A fiber optic article can comprise a core, an inner region disposed about the core and a cladding disposed about the inner region. The index of refraction of the cladding can be less than that of the inner region, and the index of refraction of the inner region can be ... 02/02/06 - 20060024008 - Composite waveguide A composite waveguide comprising a central core and at least one side core helically wound about said central core and in optical proximity to said central core. ... 01/26/06 - 20060018612 - Solid type polarization maintaining fiber and apparatus Disclosed is an optical fiber (20) having a centermost laterally-elongated core (30) having a short dimension (a), a long dimension (b) and a first refractive index (n1), a moat (40) surrounding the central laterally-elongated core, the moat (40) having a second refractive index (n2), an outer dimension (c) and an ... 01/19/06 - 20060013546 - Optical fiber, evaluation and fabrication method thereof An optical fiber having a small increase in loss at a wavelength of approximately 1400 nm involved in a deuterium treatment is provided, and an evaluation method to decide whether an optical fiber is that having such a loss increase, and a fabrication method of an optical fiber having a ... 01/19/06 - 20060013545 - Polarisation-dependent optical fibre amplifier Apparatus comprising an optical fibre (1) having a waveguide (2) and at least one stress applying region (3): in which the waveguide (2) is defined by a numerical aperture; the stress applying region (3) has a depressed refractive index; the optical fibre (1) is configured such that the waveguide (2) ... 01/12/06 - 20060008220 - Optical lowpass filter and method for producing an optical lowpass filter The invention relates to an optical lowpass filter that has a plurality of light guiding optical fibers, and to a method for producing such an optical lowpass filter. ... 01/12/06 - 20060008219 - Direct diode contact high power fiber optic laser system Embodiments include a fiber optic laser system having at least one optical waveguide with a laseable core and a pump cladding disposed adjacent the lasing core. A source of electromagnetic pumping energy is disposed adjacent to the optical waveguide and has an emission axis that is directed toward the optical ... 01/12/06 - 20060008218 - Method of manufacturing an optical fibre, a preform and an optical fibre A method of manufacturing an optical fibre, comprises: (i) forming a preform (10) for drawing into the fibre, the preform (10) comprising a bundle of elongate elements, (20,50) arranged to form a first region that becomes a cladding region of the fibre and a second region that becomes a core ... 01/05/06 - 20060002671 - Optical fiber, apparatus and method for manufacturing optical fiber A method for manufacturing an optical fiber by drawing an optical fiber preform softened by heating, includes cooling the optical fiber at a cooling rate of not more than 4000° C. per second at a temperature of 1200 to 1400° C. of the optical fiber; and cooling the optical fiber ... 12/29/05 - 20050286847 - Process for manufacturing a micro-structured optical fibre An intermediate polymer preform of elongated shape for manufacturing a microstructured optical fibre is made from a mould with a tubular par containing a pattern of hole generating elements (wires, rods or tubes) extending along it. The hole generating elements are releasably attached to an upper and to a lower ... 12/22/05 - 20050281521 - Optical fiber, apparatus and method for manufacturing optical fiber A method for manufacturing an optical fiber by drawing an optical fiber preform softened by heating, includes cooling the optical fiber at a cooling rate of not more than 4000° C. per second at a temperature of 1200 to 1400° C. of the optical fiber; and cooling the optical fiber ... 12/15/05 - 20050276556 - Optical waveguide An elongate waveguide for guiding light includes a core having an elongate region of relatively low refractive index; a microstructured region around the core having elongate regions of relatively low refractive index interspersed with elongate regions of relatively high refractive index; and a boundary at the interface between the core ... 12/15/05 - 20050276555 - Glass-body-producing method and optical glass body and optical fiber A method produces a glass body that contains a reduced amount of OH groups in the metallic-oxide-containing glass layer and that has a reduced amount of transmission loss due to OH groups when the glass body is transformed into an optical fiber. The production method produces an optical glass body. ... 12/08/05 - 20050271340 - Photonic crystal waveguides and systems using such waveguides In general, in one aspect, the invention features an apparatus that includes a photonic crystal fiber configured to guide a mode of electromagnetic radiation at a wavelength, λ, along a waveguide axis. The fiber includes a core extending along the waveguide axis, and a confinement region extending along the waveguide ... 12/08/05 - 20050271339 - Preform, a head part for a preform and a method for manufacturing a fibre A preform, a head part for a preform and a method for manufacturing a fiber. The head part is adapted to be attached to a preform of a fiber. The head part has such a shape that a heat load directed to the preform will be distributed to the cross ... 12/01/05 - 20050265677 - Hollow waveguide and method of manufacturing the same A hollow waveguide has a metal-clad pipe having an inside metal layer and an outside metal layer, and a hollow region formed inside of the metal-clad pipe. The metal-clad pipe is formed by pressure-bonding metal pipes each of which is made of a metal material different from each other. ... 12/01/05 - 20050265676 - Optical fiber for metro network An optical fiber for use in a metro network is provided. The optical fiber has a loss of 0.25 dB/km or less in the C-band and the L-band, a zero dispersion wavelength between 1560 nm and 1560 nm, and a dispersion slope of at least 0.074 ps/nm2/km at a wavelength ... 11/24/05 - 20050259933 - Photonic crystal fibers and medical systems including photonic crystal fibers In general, in one aspect, the invention features systems, including a photonic crystal fiber including a core extending along a waveguide axis and a dielectric confinement region surrounding the core, the dielectric confinement region being configured to guide radiation along the waveguide axis from an input end to an output ... 11/24/05 - 20050259932 - Optical fiber and a method for manufacturing same There is prepared an optical fiber preform 2 whose core region is doped with Ge in such a quantity of dopant that the relative refractive-index difference [Ge] expressed in % with respect to pure SiO2 satisfies the condition [Ge]≧0.3%, where upon after being heat drawn with a drawing furnace 11 ... 11/17/05 - 20050254765 - Optical fiber having reduced defect density An optical fiber comprising a multimode glass core having a diameter of at least 250 microns and an index of refraction and a polymer cladding having a thickness and contactingly surrounding a glass portion of the fiber so as to define an interface between the glass portion and the polymer ... 11/17/05 - 20050254764 - Double-clad optical fibers A double-clad optical fiber has an inner cladding with a pentagonal or heptagonal cross-section. The core of this fiber can be in the center or off-center. Moreover, the fiber may comprise stress field portions within the inner cladding which cause further distortions for deflecting pumped light to the core. In ... 11/17/05 - 20050254763 - Dispersion managed hom multimode optical fibre The invention relates to the field of dispersion managed optical fibres for use in wavelength division multiplex transmission networks. A multimode optical fibre in which at least one higher-order mode can be propagated, is constituted radially by a single central core surrounded by an optical cladding (13), and comprises, for ... 11/17/05 - 20050254762 - Chromatic dispersion compensation module An optical module for chromatic dispersion compensation comprises an optical fiber wound so as to present a variable radius of curvature. The fiber has an index profile such that it has, for the main propagation mode, a negative dispersion value having a minimum at a given wavelength in a given ... 11/17/05 - 20050254761 - Method and device for spectral filtering A method and a device in optical fiber based spectral filtering. A length of an optical fiber including at least a core region surrounded by a cladding region is coiled over its length in whole or in part to subject the fiber to longitudinal curvature in order to affect the ... 11/10/05 - 20050249469 - Device for protecting fibre lines against destruction by laser radiation The invention relates to laser engineering and fibre optics. The inventive device for protecting fibre lines against destruction thereof by laser radiation is embodied in the form of a section of an optical fibre which comprises the cladding (6) and the core (7) thereof. The position (8) indicated dashed lines ... 11/03/05 - 20050244119 - Method of manufacturing fluorine doped silica glass article, and method of manufacturing optical fiber preform and optical fiber using the method, and optical fiber made by such method Provided are an optical fiber which exhibits a small increment of loss due to the OH group and which is suitable for transmitting signals in a band including a wavelength of 1,380 nm, and methods for manufacturing such optical fiber, an optical fiber preform, and a fluorine doped silica glass ... 11/03/05 - 20050244118 - Solid type single polarization fiber and apparatus Disclosed is an optical fiber (20) having a centermost laterally-elongated core (30) having a short dimension (a), a long dimension (b) and a first refractive index (n1), a moat (40) surrounding the central laterally-elongated core, the moat (40) having a second refractive index (n2), an outer dimension (c) and an ... 10/27/05 - 20050238306 - Method for manufacturing an optical fibre having variations in the refractive index A method of manufacturing an optical fibre, which method comprises the steps of: i) providing an optical preform, ii) heating one end of said optical preform, iii) drawing an optical fibre from the heated end of the optical preform, iv) cooling the optical fibre, and v) winding the cooled optical ... 10/27/05 - 20050238305 - Tapered optical fibre with a reflective coating at the tapered end An optical fibre core (39) having a reflective coating (33) along a first part of its length such that electromagnetic radiation may travel along the first part of the optical fibre by means of reflection, and further having a cladding (37) along a second part of its length, the cladding ... 10/27/05 - 20050238304 - Plastic optical product, plastic optical fiber, apparatus for manufacturing plastic optical part, and method for manufacturing plastic optical part and plastic optical product A clad tube (21) is formed by melting and extruding a polymer, such as PMMA. The molten polymer is extruded through an extrusion die (12) to form a soft clad (20). The soft clad (20) is forwarded to a molding die (13) to correct the shape of the soft clad ... 10/20/05 - 20050232559 - Optical amplification producing wider total gain bandwidth A communication system and method are disclosed to provide a wider gain bandwidth. One embodiment of the invention is a communication system comprising a transmitter, a Phosphate-doped fiber span, a receiver, and a continuous wavelength light system. When in operation, the transmitter transmits optical signals over the Phosphate-doped fiber span ... 10/06/05 - 20050220430 - Optical fiber and evaluation method thereof An optical fiber characterized by a cutoff wavelength of 1310 nm or less, a transmission loss of 0.40 dB/km or less at the wavelength of 1385 nm before hydrogen ageing, a transmission loss of 0.40 dB/km or less in the wavelength range of 1310 nm to 1625 nm after hydrogen ... 10/06/05 - 20050220429 - Systems and methods of cooling a fiber amplifier A system for cooling a fiber amplifier includes a fiber amplifier assembly, which, in turn, includes a longitudinally-extending fiber amplifier, a jacket and a retaining structure. The jacket surrounds the fiber amplifier and extends at least partially longitudinally therealong. In this regard, the jacket surrounds the fiber amplifier such that ... 10/06/05 - 20050220428 - Arrangement and a mehtod for clamping thin rods An arrangement for clamping thin rods of glass or quartz having a diameter below 1 mm in two mutually-spaced clamping locations for holding a said rod extended between the two clamping locations. The arrangement also comprises first clamping means arranged to clamp the rod in a first clamping location. The ... 09/29/05 - 20050213907 - Nonlinear optical fiber and optical signal processing apparatus using the optical fiber The present invention provides an optical fiber of a high nonlinear characteristic which has low dispersion values in a wide wavelength region in the vicinity of a wavelength of 1550 nm. An excellent optical signal processing apparatus is realized by using this optical fiber, such as an optical wavelength converter ... 09/29/05 - 20050213906 - Optical transmission mediums, and processes and apparatus for producing optical transmission mediums A novel process for producing an optical transmission medium comprising a drawing step of drawing a molten portion of a preform to form the optical transmission medium is disclosed. In the process, the preform is heated by irradiation with laser light thereby being partially molten, and desirably rotated in a ... 09/22/05 - 20050207713 - Subwavelength-diameter silica wires for low-loss optical waveguiding The present invention provides nanometer-sized diameter silica fibers that exhibit high diameter uniformity and surface smoothness. The silica fibers can have diameters in a range of a about 20 nm to about 1000 nm. An exemplary method according to one embodiment of the invention for generating such fibers utilizes a ... 09/15/05 - 20050201700 - Dispersion compensating fiber module, and optical fiber transmission line A dispersion compensating fiber module which, when connected to an optical fiber which exhibits, at a wavelength of 1.55 μm, a chromatic dispersion of between +2 and +6 ps/nm/km, a dispersion slope of between +0.075 ps/nm2/km and +0.095 ps/nm2/pm, and a relative dispersion slope of between 0.016 nm−1 and 0.024 ... 09/15/05 - 20050201699 - Low loss optical fiber and method for making same A method of forming an alkali metal oxide-doped optical fiber by diffusing an alkali metal into a surface of a glass article is disclosed. The silica glass article may be in the form of a tube or a rod, or a collection of tubes or rods. The silica glass article ... 09/08/05 - 20050196114 - Stress-induced control of polarization dependent properties in photonic devices In order to make a photonic device incorporating a waveguide, a waveguide is formed with a predetermined geometry. Birefringence is then controlled by determining the amount of stress induced within the waveguide. ... 09/01/05 - 20050191019 - Low water peak optical waveguide fiber Optical waveguide fiber having low water peak as well as optical waveguide fiber preforms and methods of making optical waveguide fiber preforms from which low water peak and/or low hydrogen aged attenuation optical waveguide fibers are formed, including optical waveguide fiber and preforms made via OVD. The fibers may be ... 09/01/05 - 20050191018 - Variable optical dispersion compensating module The present invention provides a variable optical dispersion compensating module comprised of (a) an optical dispersion compensating unit having an input optical switch, an optical dispersion compensating fiber, connected to the optical switch, having a predetermined optical dispersion amount, a bypass path for bypassing the optical dispersion compensating fiber, and ... 09/01/05 - 20050191017 - Multi-clad doped optical fiber The invention provides a multi-clad fiber, with three claddings or more, where at least one intermediate cladding is inserted between an inner core and an outer core of the multi-clad fiber, for enlarging the cross-section of the fiber core or for increasing the dopant density in the core. The invention ... 08/25/05 - 20050185905 - Dispersion correction fiber, transmission system and method of operating same A dispersion correction optical fiber includes a segmented core having a central core segment, a moat segment and, preferably, a ring segment. The refractive index profile is selected to provide a total dispersion minimum which is located within an operating wavelength band of the fiber. Most preferably, the dispersion value ... 08/04/05 - 20050169590 - Liquid crystal infiltrated optical fibre, method of its production, and use thereof An optical fiber having a longitudinal direction and a cross-section perpendicular thereto, the optical fiber includes a core region; and a micro-structured cladding region, the cladding region surrounding the core region and having longitudinally extending micro-structure cladding elements arranged in a background cladding material, the micro-structured cladding elements having cross-sectional ... 07/28/05 - 20050163443 - Optical fiber and preform, method of manufacturing same, and optical component made therefrom An optical waveguide fiber or body having a doped outer region which can be utilized in an optical coupler, a preform which can serve as the precursor for the fiber, an optical coupler, and methods of making same. Water, for example in the form of H2O and/or D2O, may be ... 07/28/05 - 20050163442 - Communication system using sheet light guide In a communication system using a sheet light guide (10) which is formed to contain light-scattering particles in a sheet optical medium and propagates signal light incident from one end surface thereof to the other end surface side while scattering the signal light by the particles, a photodetector (55) which ... 07/28/05 - 20050163441 - Production method for optical lens and production method for optical fiber connector The production method for an optical fiber connector includes the steps of: injecting and hardening a first resin (26) into a resin-injection portion (29) of a connector body (22), the first resin (26) being a light hardening resin or a heat hardening resin; forming a pre-lens by further injecting a ... 07/21/05 - 20050157997 - Fiber incorporating quantum dots as programmable dopants A programmable dopant fiber includes a plurality of quantum structures formed on a fiber-shaped substrate, wherein the substrate includes one or more energy-carrying control paths, which pass energy to quantum structures. Quantum structures may include quantum dot particles on the surface of the fiber or electrodes on top of barrier ... 07/21/05 - 20050157996 - Fiber incorporating quantum dots as programmable dopants A programmable dopant fiber includes a plurality of quantum structures formed on a fiber-shaped substrate, wherein the substrate includes one or more energy-carrying control paths, which pass energy to quantum structures. Quantum structures may include quantum dot particles on the surface of the fiber or electrodes on top of barrier ... 07/21/05 - 20050157995 - Wavelength division multiplexing system A wavelength division multiplexing system includes a wavelength division multiplexing transmission path including a multimode optical fiber that is codoped with germanium and fluorine. The wavelength division multiplexing system may further include a multiplexer and a demultiplexer, in which the multiplexer and the demultiplexer are coupled via the multimode optical ... 07/21/05 - 20050157994 - Optical fiber and optical transmission line and optical communication system including such optical fiber Optical fibers to form an optical transmission line suitable for WDM transmission in a wide-spreading wavelength band, having the following characteristics and parameters: a dispersion in absolute value of 0.5 ps/nm/km to 9 ps/nm/km in a wavelength band of 1430 nm to 1625 nm, a dispersion slope in absolute value ... 07/21/05 - 20050157993 - Method and device for controlling the refractive index in an optical fiber SOLUTION: A core region 11 is a region of a circular shape in cross section disposed at the center of an optical fiber 10 and has a refractive index n1. A clad region 12 is a region disposed around this core region 11 and has a refractive index n2 smaller ... 07/14/05 - 20050152654 - Reduced four-wave mixing optical fiber for wavelength-division multiplexing An optical fiber includes a core for guiding light of a specified range of wavelengths therethrough, each wavelength in the specified range of wavelengths traveling through the core at a particular group velocity and the light potentially producing a nonlinear optical effect. The optical fiber also includes a cladding formed ... 07/14/05 - 20050152653 - Method of manufacturing optical fiber preform using modified chemical vapor deposition including dehydration and dechlorination process and optical fiber manufactured by the method Disclosed is a method of manufacturing an optical fiber perform using MCVD including dehydration and dechlorination, which executes the following process repeatedly with changing the composition of soot generation gas according to the refractive index profile, the process including the steps of: forming a soot layer having pores on an ... 07/07/05 - 20050147368 - Plastic optical fiber, optical fiber cable, plugged optical fiber cable, and production methods thereof The present invention relates to a production method of a plastic optical fiber which comprises the steps of heat drawing an undrawn plastic optical fiber obtained by melt spinning and annealing the drawn fiber at a circumferential velocity ratio between the front and rear rollers (circumferential velocity of a rear ... 07/07/05 - 20050147367 - Method for manufacturing base material for optical fiber, apparatus therefor, and base material manufactured by the same A method for manufacturing a base material for an optical fiber, includes steps of: holding a bar material by a support member; and adjusting to reduce a difference between an axis of the bar material and a rotational axis of the support member. Furthermore, an optical fiber base material grasping ... 07/07/05 - 20050147366 - Constructing preforms from capillaries and canes The invention relates to a method of producing a preform for a holey optical fibre, and more particularly, to a method of producing polymer holey optical fibre using novel capillary and cane designs that allow a construction of complex holey structures. The capillaries may have a complex internal structure including ... 06/30/05 - 20050141834 - Optical fiber having sea and islands structure To provide a low attenuation and high bandwidth type optical transmission article. An optical fiber having a sea and islands structure in which a dispersed phase as a low refractive index component is dispersed in a continuous phase as a high refractive index component. ... 06/30/05 - 20050141833 - Photosensitive optical waveguide An optical waveguide suitable for a slanted Bragg grating (SBG) to be written thereinto has a refractive index profile defining a core and a cladding and a specific photosensitivity profile. This photosensitivity profile W(r) is such that, for a given SBG writing angle θ, the coupling of the fundamental mode ... 06/23/05 - 20050135759 - Optical fiber assembly A fiber assembly comprised of nanoparticles, wherein said nanoparticles are a mixture of nanomagnetic particles and nanooptical particles. ... 06/16/05 - 20050129376 - Alkali-doped optical fiber preform and method of making same Disclosed is an alkali-doped optical fiber perform and method for making the same. A silica glass member, such as a rod or the like is heated in a furnace chamber at a temperature of less than 75° C. below the softening point of the glass rod in an environment containing ... 06/09/05 - 20050123256 - Glass base material, optical fiber, method for manufacturing thereof, and method for determining cause of defect thereof A glass base material, which is a base material of an optical fiber, comprising: a core; and a clad surrounding the core; wherein: a rate of change in a relative-refractive-index-difference between the core and the clad in a longitudinal direction of the glass base material is substantially 6% or less. ... 06/09/05 - 20050123255 - Method of manufacturing optical waveguide Two or more optical waveguides are placed in a treatment vessel. The optical waveguides in the treatment vessel are treated with a chemical substance containing at least one of deuterium, hydrogen, and a compound thereof. The treating includes causing molecules of the chemical substance to diffuse into the optical waveguides, ... 06/02/05 - 20050117863 - Method for producing an optical fiber and optical fiber In the known method for producing an optical fiber, a coaxial arrangement comprising a core rod and an outer jacket tube is elongated, the coaxial arrangement being supplied in a vertical orientation to a heating zone and being softened therein zonewise, starting with the lower end thereof, and the optical ... 06/02/05 - 20050117862 - Transmission of solitons on alternate sign dispersion optical fibres with phase conjugation An optical transmission system having optical fibres having dispersion of alternate sign greater, in absolute value, than 1 ps/(nm km) arranged in an optical path in accordance with a dispersion map appropriate for the transmission of DM solitons at a wavelength λc. The system has a transmission station and a ... ### FreshPatents.com Support |