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| Number | Title | Issue Date |
| 8218221 | Indium rich InGaN LED line monitor A method of generating a photoluminescence map for an indium gallium nitride (InGaN) well can include presenting data on a pixel by pixel basis. The data can be generated as a function of emission wavelength, line width of emission, polarization of emission, and int... | 07/10/2012 |
| 8179585 | Coupled quantum well structure In the production of optical devices or the like utilizing an intersubband transition of a coupled quantum well, a quantum well structure having strong coupling is provided. In addition, a coupled well structure of excellent productivity capable of avoiding thinning... | 05/15/2012 |
| 8054525 | Wavelength converter Provided is a wavelength converter having a simple and low-cost structure. The wavelength converter generates converted light having a wavelength different from that of input light. The wavelength converter includes (1) a pump light source that outputs pump light, (... | 11/08/2011 |
| 7864394 | Dynamically variable metamaterial lens and method A dynamically variable lens is made from actively tunable electromagnetic metamaterial cells. The lens operates on electromagnetic radiation including: radio frequency waves, microwaves, teraherz waves, near infrared waves, infrared waves and visible waves. The foca... | 01/04/2011 |
| 7692840 | Composite material with controllable resonant cells An apparatus for controlling propagation of incident electromagnetic radiation is described, comprising a composite material having electromagnetically reactive cells of small dimension relative to a wavelength of the incident electromagnetic radiation. At least one... | 04/06/2010 |
| 7646524 | Photoconductive metamaterials with tunable index of refraction and frequency Materials and structures whose index of refraction can be tuned over a broad range of negative and positive values by applying above band-gap photons to a structure with a strip line element, a split ring resonator element, and a substrate, at least one of which is ... | 01/12/2010 |
| 7525711 | Actively tunable electromagnetic metamaterial In one general aspect, a tunable electromagnetic metamaterial as described herein includes a substrate and an array of split ring resonators formed on the substrate. At least one of the split ring resonators is a capacitively tuned split ring resonator. The capaciti... | 04/28/2009 |
| 7453620 | Spatial optical modulation element and spatial optical modulation method To provide a spatial optical modulation element having a long life free from a deterioration of optical modulation characteristics even if a high power laser beam with an ultra-short pulse is used as a modulation drive light. A spatial optical modulation element ... | 11/18/2008 |
| 7426322 | Plasmon photocatalysis Plasmons on a waveguide may deliver energy to photocatalyze a reaction. The waveguide or other energy carrier may be configured to carry electromagnetic energy and generate plasmon energy at one or more locations proximate to the waveguide, where the plasmon energy ... | 09/16/2008 |
| 7406217 | Plasmon photocatalysis Plasmons on a waveguide may deliver energy to photocatalyze a reaction. The waveguide or other energy carrier may be configured to carry electromagnetic energy and generate plasmon energy at one or more locations proximate to the waveguide, where the plasmon energy ... | 07/29/2008 |
| 7405855 | Reconfigurable optical filter A tunable optical filter comprising an index grating produced in a waveguide defining a longitudinal direction of propagation of an incident optical signal, said grating being defined by a plurality of optical parameters, is characterized in that the optical guide c... | 07/29/2008 |
| 7383062 | PC card and method of using same A wireless PC card includes a housing portion including a width and a lens extending substantially the width of the housing portion; a light pipe housed by the housing portion; a substantially flat plug portion extending from the housing portion and configured to be... | 06/03/2008 |
| 7359585 | Plasmon photocatalysis Plasmons on a waveguide may deliver energy to photocatalyze a reaction. The waveguide or other energy carrier may be configured to carry electromagnetic energy and generate plasmon energy at one or more locations proximate to the waveguide, where the plasmon energy ... | 04/15/2008 |
| 7341142 | Elastomer composite materials in low density forms and methods A bale of elastomer composite is formed of elastomer and filler, the bale having a void volume of at least 3%. In another aspect, a container is provided, at least a portion of the container being occupied by elastomer composite pieces of elastomer and filler, where... | 03/11/2008 |
| 7339714 | Variable blazed grating based signal processing A light processing system includes an array of optical signal processing devices. The array of processing devices are operable to receive at least some of a first signal part and to modulate the first signal part based at least in part on a control signal received f... | 03/04/2008 |
| 7330659 | Wavelength filter that operates on sets of wavelength channels A wavelength filter, for filtering a WDM signal, comprises a demultiplexer, a multiplexer, and a control array connecting the demultiplexer and the multiplexer, where the demultiplexer and the multiplexer have a free spectral range (FSR) smaller than their wavelengt... | 02/12/2008 |
| 7320826 | Photochromic articles with reduced temperature dependency and methods for preparation Described are photochromic articles that include a substrate, a temperature dependent reducing amount of at least one organic photochromic material (b) that changes from more absorbing to less absorbing of radiation in its activating spectral absorbance as the tempe... | 01/22/2008 |
| 7305186 | Method and apparatus for scheduling communication using a star switching fabric In one embodiment, a scheduler for use with a star switching fabric includes a scheduling star switching fabric operable to receive a plurality of packets each associated with one of a plurality of wavelengths and a plurality of selecting elements associated with th... | 12/04/2007 |
| 7301686 | Optically controlled optical-path-switching apparatus, and method of switching optical paths An optical signal optical path switching method comprising steps of using a thermal lens based on a distribution of refractive index produced reversibly caused by temperature increase generated in an area of the light-absorbing layer film of thermal lens forming dev... | 11/27/2007 |
| 7295723 | Plasmon photocatalysis Plasmons on a waveguide may deliver energy to photocatalyze a reaction. The waveguide or other energy carrier may be configured to carry electromagnetic energy and generate plasmon energy at one or more locations proximate to the waveguide, where the plasmon energy ... | 11/13/2007 |
| 7283287 | Light scanning unit, and image forming apparatus using the same The invention is to provide a light scanning unit designed to suppress the quantity of torsion of a light beam caused by an inclination angle of a cylindrical lens disposed between a light source and an optical deflecting element so as to suppress increase in diamet... | 10/16/2007 |
| 7265893 | OASLM and a method and apparatus for driving an OASLM A method of controlling the switching of an optically addressable spatial light modulator (OASLM), to a first surface of which a write light signal is applied and to a second surface of which a read light signal is applied. The method comprises applying a bipolar sw... | 09/04/2007 |
| 7263288 | Optical routing using a star switching fabric In one embodiment, a router includes a plurality of line cards each operable to receive at least one packet comprising an identifier associated with a destination element external to the router. Each line card includes a look-up table operable to facilitate routing ... | 08/28/2007 |
| 7259902 | Reflective light control element with diffusible reflecting surface A reflective photochromic element having a diffuse reflective surface is provided. A diffuse reflection type photochromic element has a transparent thin film having surface irregularities formed on a transparent base and a reflective photochromic thin film layer hav... | 08/21/2007 |
| 7260655 | Optical routing using star switching fabric with reduced effective switching time In one embodiment, a router includes a star switching fabric operable to receive a plurality of optical signals each having a wavelength and each associated with a payload received by the router and to communicate from the switching fabric a plurality of substantial... | 08/21/2007 |
| 7260331 | Optical pulse demultiplexer and method thereof To demultiplex a low-speed optical pulse signal from a high-speed optical pulse signal, an optical clock generator generates an optical clock of a control wavelength λp at a predetermined frequency out of a pulse signal light of a signal wavelength λs. On one side... | 08/21/2007 |
| 7253939 | Superconductor-based modulator for extreme ultraviolet (EUV) A superconductor-based modulator includes a superconductor coupled to a cold reservoir to receive extreme ultra-violet (EUV) light beams. The light beams are modulated by altering transmission and reflection properties of the superconductor. Magnetic field, temperat... | 08/07/2007 |
| 7242507 | Electromagnetic wave absorptive film and its fabrication An electromagnetic wave absorptive film for absorbing electromagnetic waves by means of destructive interference is disclosed to include a compound layer, which has single-layer and/or double-layer wave-absorbing and/or wave reflecting grains embedded therein and a ... | 07/10/2007 |
| 7239107 | Flexure stage In one embodiment, a flexure stage comprises a base, a stage, a positioning mechanism, and a control device. The base and stage have first and second portions that are spaced apart from each other. The positioning mechanism is coupled between the base and the stage.... | 07/03/2007 |
| 7233426 | Optical transistor An optical transistor is disclosed. The optical transistor consists of a high speed photodetector region incident to a light intensity modulating region which separates a drain and source region. The disclosed optical transistor is able to exhibit high speed perform... | 06/19/2007 |
| 7233739 | Optical bit stream reader system An all optical fiber bit stream reader system for examining the data contents of an optical fiber involving the conversion of a temporal timing signal into a spatially located signal is provided. The invention generally comprises generating and detecting a signal in... | 06/19/2007 |
| 7218655 | Solid state laser insensitive to temperature changes A temperature insensitive diode-pumped solid state laser is disclosed in this invention. The components of the laser are optimized with temperature insensitive design, making the laser capable of operating in a wide temperature range without using any cooling/heatin... | 05/15/2007 |
| 7215457 | Apparatus and methods for modulating refractive index An iono-refractive structure that includes one or more ion insertion layers having a real portion and an imaginary portion of the dielectric constant is provided. While both the real portion and the imaginary portion of the dielectric constant change, the change in ... | 05/08/2007 |
| 7215491 | Optical path switching device and method An optical path switching method includes converging and irradiating, on a light absorption layer film provided in a thermal lens forming element including at least the film, each of a control light having a wavelength selected from a wavelength band which is absorb... | 05/08/2007 |
| 7209269 | Displaying holographic three dimensional images Holographic three dimensional images of objects can be displayed via a device comprising micro holographic optical elements (MHOEs). A device for displaying holographic three dimensional images of objects can comprise a laser source, a spatial filter using a micro h... | 04/24/2007 |
| 7209657 | Optical routing using a star switching fabric In one embodiment, a router includes a plurality of line cards each operable to receive at least one packet comprising an identifier associated with a destination element external to the router. Each line card includes a look-up table operable to facilitate routing ... | 04/24/2007 |
| 7206112 | Image display device and manufacuring method An image display device includes at least one transmissive display panel arranged at different depth positions in a direction normal to a display surface of the image display device. Each of the transmissive display panels includes a light-emitting layer that is san... | 04/17/2007 |
| 7196301 | System for detecting incoming light from a remote laser source A system and method for laser source detection. An exemplary embodiment of the system includes a first array of lenses, a second array of opto devices (including light sources and light detectors), and at least one processor. By positioning the array of lenses to de... | 03/27/2007 |
| 7180648 | Electro-absorption modulator device and methods for fabricating the same An electro-absorption light intensity modulator device is provided that comprises a first and a second layer disposed relative to the first layer so as to provide a light-absorbing optical confinement region. The first layer comprises a first insulator layer, and th... | 02/20/2007 |
| 7176479 | Nitride compound semiconductor element A nitride compound semiconductor element having improved characteristics, productivity and yield. A nitride compound semiconductor element includes: a sapphire substrate; a first single crystalline layer of AlN formed on said sapphire substrate; a second single crys... | 02/13/2007 |
