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Optical Waveguides > Temporal Optical Modulation Within An Optical Waveguide Temporal Optical Modulation Within An Optical WaveguideTemporal Optical Modulation Within An Optical Waveguide 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.10/04/07 - 20070230854 - Integrated active electrical waveguide for optical waveguide modulators An integrated active electrical waveguide is described for optical waveguide modulators. The active waveguide may include an optical waveguide, a plurality of modulators integrated into the waveguide to modulate the index of refraction of the waveguide, and a plurality of local amplifiers, each coupled to a modulator. ... 09/13/07 - 20070211982 - Optical functional waveguide optical modulator arrayed waveguide grating and dispersion compensation circuit An optical functional waveguide having a small size, used with saved energy, controlling the phase of light at high speed, and adjusting the optical path length. The optical functional waveguide comprises a substrate (11), a quartz waveguide clad (12), a quartz waveguide core (13), groove structures (14), a filling material ... 09/06/07 - 20070206895 - Super-resolution optical components and left-handed materials thereof Super-resolution optical components and left-handed materials thereof are provided. A left-handed material includes a substrate, a plurality of deformed split ring resonators (DSRR), and a plurality of metallic bars, wherein the DSRR and the metallic bars are disposed on the substrate with each DSRR and metal bar alternately arranged. ... 08/23/07 - 20070196040 - Method and apparatus for providing back-lighting in an interferometric modulator display device Methods and apparatus for providing light in an interferometric modulator device are provided. In one embodiment, a microelectromechanical system (MEMS) is provided that includes a transparent substrate and a plurality of interferometric modulators. The interferometric modulators include an optical stack coupled to the transparent substrate, a reflective layer over the ... 08/16/07 - 20070189654 - Interconnect structure for mems device An iterferometric modulator array is formed with connectors and/or an encapsulation layer with electrical connections. The encapsulation layer hermetically seals the array. Circuitry may also be formed over the array. ... 06/14/07 - 20070133918 - Quadrature modulator with feedback control and optical communications system using the same The method and system are disclosed for automatic feedback control of integrated optical quadrature modulator for generation of optical quaternary phase-shift-keyed signal in coherent optical communications. The method comprises the steps of detecting at least a part of an output optical signal from the QPSK modulator, extracting of a particular ... 06/07/07 - 20070127861 - Light scattering optical resonator Ring or disc optical resonators are provided with random or coherent corrugation on a top surface to cause optical power to be radiated in a desired direction by light scattering. The resonators may be positioned proximate a waveguide, either in-plane or inter-plane with the waveguide. The resonators are used in ... 02/15/07 - 20070036478 - Integrated optical modulator and method for manufacturing the same An integrated optical modulator and method for manufacturing thereof are disclosed. The integrated optical modulator comprises a carrier wave band modulator using a double sideband modulation method and an intermediate frequency band modulator using a single sideband modulation method. The carrier wave band modulator and the intermediate frequency band modulator ... 01/25/07 - 20070019896 - Class-ab microwave-photonic link Embodiments of a photonic link having low residual carrier, for use in transmitting information between an electronic signal source and an electronic signal receiver are provided. One exemplary photonic link comprises a transmitter, which has two non-linear threshold electronic to optical converters that are biased to provide large even-order distortion, ... 01/04/07 - 20070003179 - Qpsk light modulator The present invention provides a light transmitter with a stable IQ amplitude ratio relative to the characteristic change of a modulating system. The QPSK light modulator of the present invention includes a laser light source for outputting light; an optical demultiplexer for inputting light and branching it in two directions; ... 11/30/06 - 20060269182 - Optical modulator and method of manufacturing same Laser light emitted from a vertically confined surface emitting laser (VCSEL) is incident on a side surface near an end region of an optical waveguide. The end region of the optical waveguide is processed by polishing to taper at an angle of 45 degrees, and an optical modulator is formed ... 11/02/06 - 20060245679 - Electromagnetic field sensing apparatus An electromagnetic field sensing apparatus includes an optical modulator, a miniature antenna for sensing the electromagnetic field, a light source, a first optical fiber, an optical detector and a second fiber. The optical modulator can vary the amplitude of a light beam propagating therethrough in response to an electric field ... 09/21/06 - 20060210211 - Coherent optical channel substitution In an optical data transmission system, one channel is removed from a group of wavelength division multiplexed optical channels and another channel carrying different information at the same wavelength is inserted in its place. The process occurs by adding an optical signal whose electric field is the difference between the ... 09/21/06 - 20060210210 - Adaptive pulse shape control A method, apparatus, and computer program product are provided for optimising the pulse shape of optical signals output from an optical transmitter. The optical transmitter includes an optical modulator controlled by a bias voltage and a signal drive level, wherein the bias voltage and signal drive level are controlled automatically ... 09/14/06 - 20060204161 - Two-dimensional photonic crystal multiplexer/demultiplexer An object of the present invention is to provide a multiplexer/demultiplexer capable of preventing a decrease in multiplexing/demultiplexing efficiency due to an error in wavelength or due to a crosstalk with other wavelengths. A two-dimensional photonic crystal having holes 22 cyclically arranged is provided with an input waveguide 23 and ... 09/07/06 - 20060198565 - Optical phase shift device and antenna system utilizing same A phase shift device of an optical fiber signal includes an actuator for changing the signal phase in at least one fiber portion by inducing the phase change by thermo-optical effect. An antenna system incorporating phase shift devices using the thermo-optical effect find particular utility in automotive and telecommunications fields. ... 08/17/06 - 20060182381 - Foil display with increased brightness using a retro reflector A foil display device has a passive plate (4) and a light guide (2) and a flexible foil (3) arranged between them. The foil (3) can selectively be brought into contact with the light guide (2) to decouple light from the light guide (2). Reflecting means (6) are located on ... 08/10/06 - 20060177171 - Tension-controlled fiber optic tuning and isolating device A tunable fiber optic component providing environmental isolation, thermal tuning, and mechanical tuning and a method of tuning a fiber optic component using application of substantially simultaneous varying of temperature and mechanical strain is disclosed. A method of using a tunable fiber optic component, for example, a distributed feedback fiber ... 08/10/06 - 20060177170 - Method for tuning a fiber optic component A tunable fiber optic component providing environmental isolation, thermal tuning, and mechanical tuning and a method of tuning a fiber optic component using application of substantially simultaneous varying of temperature and mechanical strain is disclosed. A method of using a tunable fiber optic component, for example, a distributed feedback fiber ... 07/27/06 - 20060165336 - Self-adapting limiter A limiter for limiting selected frequency components by generating Stokes waves in a stimulated Brillouin scattering medium. The generated Stokes waves create a seed that is provided to another stimulated Brillouin scattering medium. The seed selecting the undesired frequency components to be attenuated. ... 07/20/06 - 20060159383 - Optical transistor An optical transistor is disclosed. An apparatus according to aspects of the present invention includes optical waveguide disposed in semiconductor material. A diode structure is disposed in the optical waveguide. The diode structure includes P and N regions. An electrical switch coupled to the P region and the N region ... 07/20/06 - 20060159382 - Variable optical power limiter A variable optical power limiter is disclosed. An apparatus according to aspects of the present invention includes an optical waveguide disposed in semiconductor material. An optical beam is to be directed through the optical waveguide. The optical beam is to generate free carriers in the optical waveguide via two-photon absorption ... 07/20/06 - 20060159381 - Semiconductor optical converter The semiconductor optical converter comprises an n-InP clad layer (12), an optical waveguide layer (13), an SI-InP clad layer (14), and an n-InP clad layer (15) formed sequentially on an SI-INP substrate (11), characterized in that a voltage is applied from an electrode (16) connected with the n-InP clad layer ... 06/22/06 - 20060133712 - Apparatus for and method of controlling optical interferometer An apparatus and method for controlling an optical interferometer are provided. The method includes setting a thermoelectric cooler (TEC) temperature of the optical interferometer to a room temperature, obtaining an optimal temperature using a difference between two output powers of the optical interferometer based on eye opening of the two ... 06/22/06 - 20060133711 - Methods and apparatus for single fiber optical telemetry Single fiber optical telemetry systems and methods are disclosed. The methods and systems facilitate input and output via a single fiber optic interface. The optical telemetry systems and methods also facilitate faster data transmission rates between surface and downhole equipment in oilfield applications. ... 06/15/06 - 20060126986 - Reduced loss ultra-fast semiconductor modulator and switch A fast optical modulator or switch with reduced optical loss is disclosed. An apparatus according to aspects of the present invention includes an optical splitter disposed in a semiconductor material. An optical beam having a first wavelength is split by the optical splitter into first and second portions. First and ... 06/08/06 - 20060120653 - Phase shifting optical device with dopant barrier A doped barrier region included in an optical phase shifter is disclosed. In one embodiment, an apparatus according to embodiments of the present invention includes a first region of an optical waveguide and a second region of the optical waveguide. The second region of the optical waveguide includes a higher ... 06/01/06 - 20060115195 - Fiber bragg grating device There is provided a fiber Bragg grating devise comprising an FBG mount that is constituted by sequentially stacking a temperature control plate, a base plate, and a mounting plate, and an SSFBG in which a plurality of FBG units of the same constitution and a plurality of phase modulation portions ... 05/25/06 - 20060110088 - Method, apparatus and system for minimally intrusive fiber identification A method, apparatus and system for minimally intrusive fiber identification includes imparting a time-varying modulation onto an optical signal propagating in an optical fiber and subsequently detecting the presence of the time-varying modulation in the optical signal transmitting through the fiber to identify the fiber. In a specific embodiment of ... 04/27/06 - 20060088239 - Method for controlling an optoelectronic component A method for controlling an optoelectronic component that includes two waveguides. The refractive index of the first waveguide is changed periodically with a first control signal, the amplitude of which is changed between a first amplitude level and higher second amplitude level. The refractive index of the second waveguide is ... 04/06/06 - 20060072866 - Interference optical switch and variable optical attenuator The present invention discloses an interferometer optical switch that can carry out switching over a broad band and has a high extinction ratio and large fabrication tolerance. The interferometer optical switch employs a phase generating coupler, the phase difference of the output of which has wavelength dependence, as at least ... 02/09/06 - 20060029319 - Optical modulator The present invention relates to an optical modulator capable of preventing a disconnection of an electrode and improving a discontinuity of a characteristic impedance while realizing a polarization inverting area and a ridge waveguide in a single optical modulator. In the optical modulator, a first electrode is composed of an ... 01/12/06 - 20060008194 - Optical module An optical module having: a first transmission line and a second transmission line, both connected in series to transmit electrical signals; a laser diode element; an optical modulator element; a termination resistance element for impedance matching; a first bonding wire connecting one end of the first transmission line and the ... 12/15/05 - 20050276533 - Structures for small form factor linbo3 optical modulator Small form factor package structures are disclosed for LiNbO3 optical modulator by reducing the package dimension for minimize the unused free space inside a modulator package. If a first aspect of the invention, the structure of the small form factor package for LiNbO3 optical modulator employs a metal round block ... 12/08/05 - 20050271312 - Light propagation structure and optical display device of optical system, light propagation method of optical system, and display method of optical display device A projection-type display device 100 including a light source 10, a luminance modulation light valve having a plurality of pixels capable of independently controlling a transmission factor T1, dichroic mirrors 44a and 44b that divided the light from the luminance modulation light valve into the three primary colors of red, ... 11/10/05 - 20050249444 - Optical transmitter and its control method An optical transmitter comprises an amplitude modulation unit performing amplitude modulation of only a one-side amplitude of a main signal with a low-frequency signal having a predetermined frequency. An optical modulator receives an input signal generated after the one-side amplitude modulation, and modulates an incoming light in response to the ... 10/06/05 - 20050220386 - Optical modulator and method of manufacturing same Laser light emitted from a vertically confined surface emitting laser (VCSEL) is incident on a side surface near an end region of an optical waveguide. The end region of the optical waveguide is processed by polishing to taper at an angle of 45 degrees, and an optical modulator is formed ... 10/06/05 - 20050220385 - Optical ssb modulator An optical SSB modulator capable of appropriately adjusting a phase difference of light in the MZ waveguides and automatically adjusting a voltage impressed to the bias adjustment electrodes is provided. The above-mentioned object is achieved by an optical SSB modulator (1) provided with a first sub Mach-Zehnder waveguide (MZA) (2), ... 09/29/05 - 20050213862 - Bias adjustment method for optical ssb modulator or optical fsk modulator A method of appropriately adjusting a bias signal of an optical modulator is provided. For an optical modulator provided with a first sub Mach-Zehnder waveguide, a second sub Mach-Zehnder waveguide and a main Mach-Zehnder waveguide, a predetermined signal is supplied to the main Mach-Zehnder waveguide, and bias signals supplied to ... 09/22/05 - 20050207691 - Silicon-insulator-silicon thin-film structures for optical modulators and methods of manufacture The present invention provides silicon based thin-film structures that can be used to form high frequency optical modulators. Devices of the invention are formed as layered structures that have a thin-film dielectric layer, such as silicon dioxide, sandwiched between silicon layers. The silicon layers have high free carrier mobility. In ... 09/15/05 - 20050201652 - Apparatus, method, and computer program product for testing waveguided display system and components An apparatus and method for a waveguided switching matrix. A method of operating the switching matrix including a plurality of arranged waveguides each having an associated influencer structure for independently influencing an amplitude-effecting attribute of radiation propagating through a corresponding waveguide wherein the attribute includes a first mode for an ... 09/15/05 - 20050201651 - Apparatus, method, and computer program product for integrated influencer element An apparatus and method for an influencer structure. The apparatus includes a conductive element disposed in one or more radiation-propagating dielectric structures of a waveguide having a guiding region and one or more bounding regions, the conductive element responsive to an influencer signal to influence an amplitude-controlling property of the ... 09/08/05 - 20050196091 - Travelling-wave electroabsorption modulator According to the present invention, a travelling-wave electroabsorption modulator (TW-EAM) comprises: an optical waveguide with a plurality of adjacent regions electrically isolated from each other, the regions being characterized alternately by the properties of electroabsorption (EA) and optical transparency over the same range of optical wavelengths, and a microwave transmission ... 08/25/05 - 20050185877 - Apparatus, method, and computer program product for structured waveguide switching matrix An apparatus and method for a radiation switching array, including a first radiation wave modulator and a second radiation wave modulator proximate the first modulator, each the modulator having a transport for receiving a wave component, the transport including a waveguide having a guiding region and one or more bounding ... 08/18/05 - 20050180672 - Apparatus, method, and computer program product for multicolor structured waveguide An apparatus and method for a multicolor picture element for a display, including a number N of radiation sources for producing N number of input wave components, at least one input wave component for each primary color in a color model; a number M of modulators proximate one another, where ... 08/11/05 - 20050175269 - Absorbent article with handle A disposable absorbent article comprising a chassis comprising a liquid pervious topsheet, a liquid impervious backsheet joined with the topsheet, and an absorbent core interposed between the topsheet and backsheet; at least one sidewall adjacently disposed to the chassis; and at least one handle assisting in the application of the ... 08/04/05 - 20050169566 - Thermophotometric phase shifter and method for fabricating the same In an aspect of the present invention, a thermo-optic phase shifter includes a substrate, a heater, a clad layer formed directly or indirectly on a substrate, an optical waveguide clad layer formed apart from the substrate and the clad layer in a portion corresponding to the heater, and a core ... 07/28/05 - 20050163411 - Optical modulator, exposure head and image recording apparatus The optical modulator includes an optical waveguide for receiving light entered from a first end surface thereof and for emitting the light from a second end surface opposing to the first end surface, a flexible light transmitting member disposed so as to face with a boundary surface of the optical ... 07/21/05 - 20050157969 - Method and system for controlling optical wavelength based on optical frequency pulling Optical wavelength control method and apparatus which are capable of controlling an optical wavelength of a light source with a central wavelength which is uncertain and unstable at nanometer order is disclosed. In the optical wavelength control apparatus, the control target light entered from the variable wavelength light source is ... 07/14/05 - 20050152631 - Conversion between optical and radio frequency signals A detector or a modulator for converting between optical and radio frequency signals comprising an optical guide (11 to 14) for propagating two optical signal components having frequencies that differ by an amount corresponding to a radio frequency and a microstrip radio signal guide (15, 16) for propagating a radio ... 06/30/05 - 20050141800 - Waveguide semiconductor optical device and process of fabricating the device A waveguide semiconductor optical device has a pin junction on a semi-insulating substrate. The pin junction consists of an n-type cladding layer, an i-type absorption layer, and a p-type cladding layer. The waveguide semiconductor optical device includes a dopant impurity concentration not higher than 1016 cm-3 in the i-type absorption ... 06/23/05 - 20050135721 - Modulators incorporating multi-layer dispersion-engineered waveguides A multi-layer laterally-confined dispersion-engineered optical waveguide may include one multi-layer reflector stack for guiding an optical mode along a surface thereof, or may include two multi-layer reflector stacks with a core therebetween for guiding an optical mode along the core. Dispersive properties of such multi-layer waveguides enable modal-index-matching between low-index ... 06/02/05 - 20050117829 - Peripheral coupled traveling wave electro-absorption modulator A method for optical modulation comprising the steps of guiding an optical wave in an optical waveguide, the optical wave having an evanescent tail; and applying a modulation voltage to the evanescent tail. ... ### FreshPatents.com Support |