Optical waveguides inventions 03/08

20080075414 - Backside reflection optical display: The disclosure generally involves an optical (perhaps flat panel) display utilizing backside reflection for time-multiplexed optical shuttering. One display comprises a side-illuminated light guide associated with conditions for total internal reflection. A first surface of the light guide is elastomeric. Disposed against this elastomeric surface is an active layer that... Agent: Fish & Richardson P.C.

20080069492 - Optical modulator: A high-speed optical modulator constructed from a number of lower speed intensity modulators integrated onto a single optical chip.... Agent: Brosemer, Kolefas & Associates, LLC - (lucent)

20080069493 - Integrated optoelectronic device and method of fabricating the same: An integrated optoelectronic device includes optical waveguide elements containing InGaAlAs as a principal component, formed on an InP substrate and connected in an end-to-end fashion by butt jointing. AnInGaAs Player is formed on the InP substrate to suppress the mass transport of InP during the fabrication of the integrated optoelectronic... Agent: Stanley P. Fisher Reed Smith LLP

20080069495 - Rotary joint: A rotary joint 1 capable of stably transmitting superfine images and high-speed data is provided. The rotary joint 1 includes a stationary part 2 and a rotary part 3 rotatable about an axis against the stationary part 2 and transmits light signals between the stationary part 2 and the rotary... Agent: Nath & Associates

20080069497 - Optical waveguide tap monitor: A refractive index grating is formed in an optical waveguide. A detector has an incident light surface that is oriented at about a right angle to a longitudinal axis of the waveguide. The surface is positioned upstream of the grating and outside of the waveguide to receive reflected light from... Agent: Intel/blakely

20080069498 - Tapered composite waveguide for athermalization: A planar waveguide circuit includes a silica-based planar optical waveguide circuit having a lower cladding, a core and an upper cladding. At least one input waveguide and one output waveguide are each coupled to the optical waveguide circuit. At least one tapered waveguide section is located in the waveguide circuit,... Agent: Mayer & Williams PC

20080069499 - Waveguide type optical device and manufacturing method of the waveguide type optical device: A waveguide type optical device includes a substrate where a waveguide is formed; a supplemental plate connected on the substrate by using an adhesive; and a groove forming part formed by cutting through the supplemental plate so as to reach the substrate and cut the waveguide, the groove forming part... Agent: Staas & Halsey LLP

20080069500 - Fiber optic overmold method and product: A termination is formed on an optical fiber by securing the fiber in a mold which defines a cavity for forming the termination. A liquid is injected into the cavity, which solidifies to form the termination. At least a portion of the mold is removed to expose the termination.... Agent: Mccarter & English , LLP Stamford Office

20080069501 - Secure fiber optic connector and adapter systems: A secure fiber optic connector and adapter system including at least one connector including a first housing portion defining a first key slot and a second housing portion defining a second key slot independent of the first key slot, and at least one adapter including a first cavity for receiving... Agent: Corning Cable Systems LLC

20080069502 - Fiber bundle termination with reduced fiber-to-fiber pitch: A method of fabrication of a fiber bundle termination with reduced fiber-to-fiber pitch which includes reducing the outside diameter of fibers in the fiber bundle by etching and provides means for preventing breakage of the etched fibers during etching and assembly. A high yield fabrication and assembly process is described.... Agent: Intellectual Property Management Boeing Management Company

20080069491 - Electro-optic device: The invention relates to an electro-optic modulator structure containing an additional set of bias electrodes buried within the device for applying bias to set the operating point. Thus the RF electrodes used to modulate incoming optical signals can be operated with zero DC bias, reducing electrode corrosion by electro-migration, galvanic,... Agent: Allen, Dyer, Doppelt, Milbrath & Gilchrist P.A.

20080069490 - Waveguide type optical control element and process for its fabrication: A waveguide type optical control element which has an optical waveguide made of an insulating material having an electro-optic effect or a thermo-optic effect, and a control electrode provided in contact with or proximity to the optical waveguide; the optical waveguide having a propagation loss which is 1 dB/cm or... Agent: Kratz, Quintos & Hanson, LLP

20080069494 - Electro-optical module comprising flexible connection cable and method of making the same: An electro-optical module comprising flexible connection cable and aligning capabilities is disclosed. Electro-optical devices may be soldered on a transparent substrate such as glass or a substrate comprising an optical waveguide wherein electrically conductive traces are designed, forming an electro-optical module. When such electro-optical module is inserted and aligned into... Agent: International Business Machines Corporation Dept. 18g

20080069496 - Coupling-enhanced surface etched gratings: The invention describes the method and apparatus for enhancement of coupling efficiency in effective-ridge laterally-coupled surface-etched grating waveguide structures, where a slab waveguide has a sequence of the periodic parallel segmented trenches etched from its top surface, such that the segments of intact material having higher refractive index than that... Agent: Freedman & Associates

20080069503 - Fiber optic cable splice: A new fiber optic cable splice for splicing optical fiber cables together and reconstructing fiber-optic cable that provide substantially enhanced reliability and broadened operating temperature range is disclosed. The disclosed cable splice offer reliable and user friendly solutions to applications in many harsh environments such as avionics, field vehicles, and... Agent: Charles Qian

20080069504 - End-surface closely arranged multicore optical fiber and manufacturing method thereof: In an end surface closely arranged multicore optical fiber 200, at least two single-mode optical fibers 10 are, at one and the other ends of the individual single-mode optical fibers 10, closely arranged in parallel to each other and bound together, such that a center-center distance of adjacent single-mode optical... Agent: Oliff & Berridge, PLC

20080069505 - Display device with fiber-optic arrangement: The invention relates to a display device having a fiber-optic plate and a display with an image plane on which the image information of the display is generated, the fiber-optic plate comprising a fiber bundle with a multiplicity of fiber cores extending beside one another, which are enclosed by a... Agent: Demont & Breyer, LLC

20080069506 - Optical fibers for high power applications: The specification describes optical fiber designs that overcome the problem of self-induced damage to optical fibers due to excessive self-focusing. The refractive index of these fiber designs is grossly non-uniform in the center core of the optical fiber. In one embodiment, the optical fiber is designed with a deliberate and... Agent: Law Firm Of Peter V.d. Wilde

20080069508 - Rare earth doped and large effective area optical fibers for fiber lasers and amplifiers: Various embodiments described herein include rare earth doped glass compositions that may be used in optical fiber and rods having large core sizes. Such optical fibers and rods may be employed in fiber lasers and amplifiers. The index of refraction of the glass may be substantially uniform and may be... Agent: Knobbe Martens Olson & Bear LLP

20080069509 - Microcircuit using electromagnetic wave routing: A device includes a transparent conductor formed on a substrate. Electromagnetic radiation (EMR) (such as may be received from an on-chip, ultra-small resonant structure or from an off-chip light source) is directed into the transparent conductive layer. One or more circuits are formed on the transparent conductive layer and are... Agent: Davidson Berquist Jackson & Gowdey LLP

20080069510 - Apparatuses having spool assembly for absorbing jumper slack: An apparatus includes a trough for routing jumpers along a surface of the trough. The apparatus further includes a spool assembly having a spool supported on a mount. The mount has an adhesive surface. The adhesive surface is attached to the trough surface to attach the spool to the trough... Agent: Brooks Kushman P.C.

20080069511 - Multi-port optical connection terminal: A multi-port optical connection terminal for use as a branch point in a fiber optic communications network at a distance from a mid-span access location provided on a distribution cable having a plurality of optical fibers. The multi-port terminal includes a base and a cover affixed to the base. A... Agent: Corning Cable Systems LLC

20080069512 - Slide arrangement for cable drawer: A drawer slide having first and second rails interconnected by a center rail. The center rail includes a spool configured to provide half-speed travel of the center rail relative to the travel of the first rail. The drawer slide is configured for use with a drawer assembly having a drawer... Agent: Attention Of Karen A. Fitzsimmons Merchant & Gould P.C.

20080069513 - Fiber optic cable entry device: A device for routing a fiber optic cable, the device including a housing having an inlet port sized to receive a section of the fiber optic cable and an outlet port adapted to redirect the section of the fiber optic cable within the housing; and a guide disposed within the... Agent: Christensen, O'connor, Johnson, Kindness, PLLC

20080063337 - Multi-core strain compensated optical fiber temperature sensor: Methods and apparatus for discrete point temperature sensing include a temperature sensor that can be part of an array of temperature sensors for location in a wellbore. A single unitary ribbon-like structure can form the temperature sensor that has separate optical cores possessing different characteristics such that one core is... Agent: Randol W. Read Patterson & Sheridan, L.L.P.

20080063338 - Cabinet access sensor: A cabinet tamper detection device is disclosed. The tamper detection device includes a first portion and a second portion. The first portion includes a housing and a first magnet movable relative to the housing between a first position and a second position. The second portion includes a second magnet. The... Agent: Merchant & Gould PC

20080063339 - Scalable and defect-tolerant color-center-based quantum computer architectures and methods for fabricating color-center-based quantum computer architectures: Various embodiments of the present invention are directed to color-center-based quantum computer architectures that are both scalable and defect tolerant and to methods for fabricating color-center-based quantum computer architectures. In one embodiment of the present invention, a node of a quantum computer architecture comprises a first photonic device configured to... Agent: Hewlett Packard Company

20080063341 - Apparatus and method of detecting misalignment of pixels of an image of an image forming apparatus: An apparatus to detect misalignment of pixels of an image in an image forming apparatus, and a method thereof. The misalignment detecting apparatus can include a light source to emit light, a lensed fiber to focus the emitted light from the light source on a printing medium bearing a test... Agent: Stanzione & Kim, LLP

20080063340 - Methods for optical isolation in high power fiber-optic systems: Methods for optical isolation in high peak power fiber-optic systems prevent damage to a facet within a fiber-optic isolator caused by back-reflected light from, for example, an optical amplifier. Preventing damage to the facet may include expanding a mode area of the back-reflected light and/or reducing a change in refractive... Agent: Carr & Ferrell LLP

20080063342 - Optical module, optical module substrate and optical coupling structure: There is provided an optical module for coupling with a fiber optic cable through an optical connector, including a module body connectable with a plug of the optical connector by a dedicated guide pin, with a side surface of the module body being opposed to a mating surface of the... Agent: Sughrue Mion, PLLC

20080063343 - Filler ribbons for ribbon stack: A buffer tube having therein a ribbon stack formed of optical fiber ribbons, and at least one filler ribbon provided on at least a top or bottom surface of the ribbon stack. The filler ribbon is provided to increase coupling between the ribbon stack and the buffer tube and to... Agent: Sughrue Mion, PLLC

20080063344 - Optical fiber coil and production method therefor: An optical fiber coil and a production method therefor reduce the likelihood of optical transmission loss due to stress or temperature changes at low cost. Plural single optical fibers are arranged in parallel and are integrally covered with a covering portion so as to form an optical fiber ribbon, and... Agent: Arent Fox LLP

20080063345 - Wide-area fluorescence detection system for multi-photon microscopy: A multi-photon microscope has an illumination source, an objective lens unit arranged in an optical path of the illumination source, a first light collection system arranged to collect a first portion of light emitted from a sample when the sample is illuminated by light from the illumination source, and a... Agent: Venable LLP

20080063346 - Optical fiber and optical fiber device: An optical fiber and an optical fiber device, which can suppress generation of the stimulated Brillouin scattering while maintaining large nonlinearity. The fiber includes a central core which is made of SiO2 as a main component and contains Al2O3 at concentration of 15 wt % or more. The fiber is... Agent: Mcdermott Will & Emery LLP

20080063347 - Method for the manufacture of optical fibers and improved optical fibers: The specification describes a universal channel dispersion compensating fiber (CDCF) for WDM channel compensation that provides essentially zero dispersion slope over the wide wavelength band used in state-of-the-art transmission systems. It allows compensation of a large number of channels using a single fiber design. The improved optical fiber of the... Agent: Peter V. D. Wilde

20080063348 - Optical fiber: An inner core has a first refractive index. An outer core having a second refractive index lower than the first refractive index is formed on outer circumference of the inner core. A cladding having a refractive index that is higher than the second refractive index and lower than the first... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080063349 - 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... Agent: Eric Robinson

20080063350 - Cable management panel with sliding drawer: An optical fiber cable management panel is provided with slideable drawers and structure within the drawers for cable management and/or connection to other devices. Tray inserts drop into the drawers to provide the appropriate management and connection devices. A movable take-up mechanism manages the cable entering and exiting the drawers... Agent: Attention Of Karen A. Fitzsimmons Merchant & Gould P.C.

20080063351 - Flexible optical closure and other flexible optical assemblies: Flexible closures and other flexible optical assemblies that are installed within a factory, or in the field, and then deployed using cable installation methods, wherein the flexible closures and assemblies have the ability to bend and twist without incurring physical damage to their structure, optical fibers and splices disposed within,... Agent: Corning Cable Systems LLC

20080056636 - Electro-optical modulator with curving resonantor: An electro-optical modulator includes a structural substrate having insulating layer. A waveguide layer is on the insulating layer. A resonant layer on the insulating layer has a curving rim adjacent to the waveguide layer to form an optical coupling region. A gate dielectric layer covers part of the resonant layer.... Agent: Jianq Chyun Intellectual Property Office

20080056637 - Optical modulator: In an optical modulator according to the invention, with respect to two MZ type optical modulators connected to each other in tandem by a curved folded waveguide on an identical substrate, a longitudinal direction of an MZ type optical waveguide unit on an optical input port side is obliquely arranged... Agent: Staas & Halsey LLP

20080056638 - Polarization-independent electro-optical (eo) switching: In one embodiment, an apparatus includes a passive element including one or more first waveguides and one or more second waveguides. The apparatus also includes an active element integrated into the passive element. The active element includes one or more third waveguides that actively guide light from the first waveguides... Agent: Baker Botts L.L.P.

20080056639 - Array temperature sensing method and system: Methods and apparatus enable monitoring conditions in a well-bore using multiple cane-based sensors. The apparatus includes an array of cane-based Bragg grating sensors located in a single conduit for use in the well-bore. For some embodiments, each sensor is located at a different linear location along the conduit allowing for... Agent: Patterson & Sheridan, L.L.P.

20080056641 - Header-replaceable hybrid waveguide sensor: A header-replaceable hybrid waveguide sensor comprises a header coupling section including a dielectric layer having an optical signal input section and an optical signal output section formed in one end thereof, the dielectric layer having two lines of protrusions formed on the upper surface thereof; and a polymer layer formed... Agent: Staas & Halsey LLP

20080056640 - Hybrid waveguide sensor: A hybrid waveguide sensor comprises a dielectric layer having one optical signal input section formed in one end thereof and one optical signal output section formed in the other end thereof, the dielectric layer having a predetermined size of thin metal film provided therein; a polymer layer formed on and... Agent: Staas & Halsey LLP

20080056642 - Reducing thermal load on optical head: Methods and apparatus for reducing a thermal load on an optical head are described. Waste light is captured at one or more locations in the optical head and directed to a location that is thermally isolated from the one or more locations in the optical head using or more optical... Agent: Joshua D. Isenberg Jdi Patent

20080056647 - Active modular optoelectronic components: Super miniature TFF and TFP active modular optoelectronic components are based on an optical interface that is substantially less than half the size of SFF/SFP components and more than five times smaller than an SC based component and provides a density that is three times higher than LC interfaces. The... Agent: Patzik, Frank & Samotny Ltd.

20080056648 - Optical module and optical communication system using the same: An optical module and an optical communication system using the optical module are disclosed. The optical module includes an optical active device for receiving or generating light, a housing made of a metal material and having the optical active device mounted therein, an optical filter having a conductive transparent electrode... Agent: Cha & Reiter, LLC

20080056643 - Diffraction grating and dispersion compensation circuit: A diffraction grating of the present invention includes a first block (101) and a second block (102). The first block (101) is made up of a plurality of input waveguides (103), a slab waveguide (104), a delay waveguide array (105) and narrow grooves (106): each of which being filled with... Agent: Edwards Angell Palmer & Dodge LLP

20080056644 - Connecting member: A connecting member which is formed by filling a mold with a resin composition and then solidifying the resin composition, the connecting member having one end face in which a plurality of fine holes of a φ or less are arrayed in a row with a pitch P therebetween, and... Agent: Knoble, Yoshida & Dunleavy

20080056645 - Connector port for network interface device: A connector port is adapted for a (NID) to receive a connectorized optical fiber from inside the NID and a pre-connectorized drop cable from outside the NID. An exterior connector port includes a base positioned within an opening defined by an external wall of the NID, a mount on the... Agent: Corning Cable Systems LLC

20080056646 - Optical connector: To extend the service life of a latch of a plug housing and facilitate assembly and aligning operations of an optical connector. The optical connector includes a latch provided in a cantilever form on an external surface of the optical connector and deformable for attachment/detachment with respect to an adaptor,... Agent: Disney Enterprises C/o Farjami & Farjami LLP

20080056649 - Dry inserts and optical waveguide assemblies and cables using the same: A dry insert is disclosed that is suitable for use in an optical waveguide assembly. The dry insert includes a compressible layer and at least one reinforcing element that are attached together. The compressible layer having a modulus of elasticity in a longitudinal direction of the dry insert and the... Agent: Corning Cable Systems LLC

20080056650 - Non-round fiber optic cable having improved major axis crush resistance: A non-round fiber optic cable that has improved crush performance is disclosed. The fiber optic cable includes at least one optical fiber, at least one strength element, and a cable jacket having a cavity. The at least one optical fiber is disposed within the cavity. The cable jacket further includes... Agent: Corning Cable Systems LLC

20080056651 - Loose tube optical waveguide fiber cable: The present invention relates to loose tube optical waveguide fiber cable which is optimized for easy and fast installation as plenum cable, such as in customer premises for FTTH (fiber to the home) applications. One of the objects of the present invention is to provide a loose tube optical waveguide... Agent: Summa, Allan & Additon, P.A.

20080056652 - Strengthened optical waveguide fiber cable: The present invention relates to a loose tube optical waveguide fiber cable that is suitable for riser or plenum applications. The cable includes a protective tube that loosely surrounds two or more optical waveguides inside the hollow cavity defined by the tube. The protective tube has an inner surface and... Agent: Summa, Allan & Additon, P.A.

20080056653 - Optical fiber tape unit and optical fiber cable: An optical fiber tape unit comprising an optical fiber core having an outer diameter of 0.4 mm or more consisting of an optical fiber strand composed of an optical fiber, a primary coating layer and a secondary coating layer, and an overcoat layer formed around the outer circumference of the... Agent: Mcginn Intellectual Property Law Group, PLLC

20080056654 - Low bend loss single mode optical fiber: Optical waveguide fiber that is bend resistant and single mode at 1260 nm and at higher wavelengths. The optical fiber includes a core of radius R1 and cladding, the cladding having an annular inner region of radius R2, an annular ring region, and an annular outer region. The annular ring... Agent: Corning Incorporated

20080056657 - Holey optical fiber with random pattern of holes and method for making same: A random array of holes is created in an optical fiber by gas generated during fiber drawing. The gas forms bubbles which are drawn into long, microscopic holes. The gas is created by a gas generating material such as silicon nitride. Silicon nitride oxidizes to produce nitrogen oxides when heated.... Agent: Blank Rome LLP

20080056656 - Large core holey fibers: Various types of holey fiber provide optical propagation. In various embodiments, for example, a large core holey fiber comprises a cladding region formed by large holes arranged in few layers. The number of layers or rows of holes about the large core can be used to coarse tune the leakage... Agent: Knobbe Martens Olson & Bear LLP

20080056655 - Sealing composition and production method of optical fiber having air holes in the inside using the composition: A sealing composition for a photonic crystal fiber which comprises a compound represented by the following general formula (I), a compound represented by the following general formula (II) and a photo-polymerization initiator: Tf1-(O)a—(CH2)b—(CF2)m—(CH2)b—(O)a-Tf1 (I) Tf2-(O)a—(CH2)b—(CF2)m—(CH2)b—(O)a-Tf2 (II) wherein a represents 0 or 1, b represents 0 or 1, m represents an... Agent: Edwards Angell Palmer & Dodge LLP

20080056658 - Low bend loss optical fiber with deep depressed ring: Optical waveguide fiber that is bend resistant and single moded at 1260 nm and at higher wavelengths. The optical fiber includes a core and cladding, the cladding having an annular inner region, an annular ring region, and an annular outer region. The annular ring region has a low relative refractive... Agent: Corning Incorporated

20080056659 - doped-ring amplifying optical fiber, and an amplifier containing such a fiber: The amplifying optical fiber comprises a single-mode core and a multimode core surrounding the single-mode core, the multimode core containing a doped layer referred to as a “doped ring” and having a certain concentration of active rare earth ions to perform amplification by active rare earth ions on at least... Agent: Sughrue Mion, PLLC

20080056660 - Optical waveguide: An optical waveguide comprises a linear metallic thin film having a light delivering unit coupled to one end thereof, through which light is incident; and at least more than two dielectric layers surrounding the metallic thin film. In the optical waveguide, an effective refractive index and a propagation loss in... Agent: Lowe Hauptman Ham & Berner, LLP

20080056661 - Duct closures and methods of sealing ducts using the same: Duct closures include a first member and a second member. The first and second members are configured to define a cavity therebetween when in a closed position. A hinge on a first end of the first member and the second member pivotally connects the first member and the second member... Agent: Marguerite E. Gerstner Tyco Electronics Corporation