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| Number | Title | Issue Date |
| 7948669 | Methods of optimizing spur-free dynamic range or gain in electro-absorption modulators Exemplary methods of maximizing a spur-free dynamic range (SFDR) or a gain of an electro-absorption modulator (EAM) are disclosed. At least one parameter in a set of design parameters for an EAM is varied. An SFDR of the EAM is determined in part by a first set of d... | 05/24/2011 |
| 7924492 | Optical device including gate insulating layer having edge effect Provided is an optical device having an edge effect with improved phase shift and propagation loss of light without decreasing the dynamic characteristics of the optical device. The optical device includes a first semiconductor layer which is doped with a first type... | 04/12/2011 |
| 7864396 | Vertical cavity multiple quantum well device with simultaneous modulation and photodetection capability A vertical cavity modulator/detector (VCMD) device and a method for modulating and detecting light are disclosed. The VCMD device contains an n-type contact layer, a transparent tuning layer, a multiple quantum well structure, a p-type contact layer, a low reflectan... | 01/04/2011 |
| 7830580 | Semiconductor optical modulator An optical modulator is provided with a stripe-shaped optical waveguide, which has an upper clad layer, a lower clad layer formed between the upper clad layer and a substrate, and an undoped core layer which is arranged between the upper clad layer and the lower cla... | 11/09/2010 |
| 7701629 | Photonic device including semiconductor structure having doped region with array of subwavelengh recesses Various aspects of the present invention are directed to photonic devices, such as electro-optic modulators, passive filters, and tunable filters. In one aspect of the present invention, a photonic device includes a semiconductor structure having a p-region and an n... | 04/20/2010 |
| 7679805 | Flip chip quantum well modulator A quantum well modulator configured to absorb or transmit light depending on an applied voltage is provided according to various embodiments. The quantum well modulator may include a substrate, a p-type and n-type semiconductor layers as well as a quantum well layer... | 03/16/2010 |
| 7502155 | Antireflective coating for semiconductor devices and method for the same According to one embodiment of the present invention, a semiconductor device includes a first layer of dielectric material disposed upon an upper surface of a substrate of a semiconductor device and a first non-conductive layer of metal disposed upon an upper surfac... | 03/10/2009 |
| 7376358 | Location specific optical monitoring An optical spike is generated at an arbitrarily selected location within an arbitrary optical link. The optical spike is generated by deriving a spike signal having a plurality of components, and launching the spike signal into the a transmitter end of the optical l... | 05/20/2008 |
| 7373090 | Modulator driver circuit with selectable on-chip termination A method and apparatus to accommodate differing output loads without sacrificing impedance matching in an optical modulator driver. ... | 05/13/2008 |
| 7372608 | Light control device and light control system using the same A light control device includes a substrate, a first reflective layer, a light modulating film in which the refractive index varies according to an applied electric field, a transparent electrode, and a second reflective layer having a reflection characteristic such... | 05/13/2008 |
| 7371562 | Guided mode resonant filter biosensor using a linear grating surface structure Methods and compositions are provided for detecting biomolecular interactions. The use of labels is not required and the methods can be performed in a high-throughput manner. The invention also provides optical devices useful as narrow band filters. ... | 05/13/2008 |
| 7368062 | Method and apparatus for a low parasitic capacitance butt-joined passive waveguide connected to an active structure Undoped layers are introduced in the passive waveguide section of a butt-joined passive waveguide connected to an active structure. This reduces the parasitic capacitance of the structure. ... | 05/06/2008 |
| 7368766 | Semiconductor light emitting element and method for fabricating the same The semiconductor laser of this invention includes an active layer formed in a c-axis direction, wherein the active layer is made of a hexagonal-system compound semiconductor, and anisotropic strain is generated in a c plane of the active layer. ... | 05/06/2008 |
| 7356969 | Electronically shaded thin film transparent monochromatic liquid crystal display laminated window shading system An electronically shaded glass window system is described that provides a progressively darkening window, based on either user input or detection of ambient light. This invention is appropriate for use in commercial buildings, residential buildings, public areas and... | 04/15/2008 |
| 7355785 | Gain-clamped semiconductor optical amplifier A gain-clamped semiconductor optical amplifier is disclosed. The amplifier includes a gain waveguide for amplifying an optical signal input to the gain waveguide, and a grating layer, in contact with the gain waveguide, having a first grating disposed at a first end... | 04/08/2008 |
| 7355778 | Semiconductor optical modulator A semiconductor optical converter for use principally in an optical communications system or an optical information processing system. The semiconductor optical converter comprises an n-InP clad layer (12), an optical waveguide layer (13), an SI... | 04/08/2008 |
| 7347085 | Nanoscale displacement detector A nanoscale displacement detector includes a cantilever integrated with an optical resonator, referred to herein as a “microresonator.” The microresonator and cantilever are configured such that displacement of the cantilever relative to the microresonator cause... | 03/25/2008 |
| 7349151 | IR absorbing reflector An infrared (IR) light absorbing reflector is formed with a substrate that supports a first IR absorptive multilayer part having multiple layers of partial IR absorbing thin films. The first IR absorptive multi-layer part supports a second visible light reflecting m... | 03/25/2008 |
| 7348201 | Creation of anisotropic strain in semiconductor quantum well Methods and devices for creating an anisotropic strain in a semiconductor quantum well structure to induce anisotropy thereof are disclosed herein. Initially, a substrate is provided, and a quantum well structure formed upon the substrate. A first crystalline layer ... | 03/25/2008 |
| 7345804 | Dynamic optical tag communicator and system using corner cube modulating retroreflector In some embodiments, a dynamic optical tag communication system is provided which includes high and low index CCR, both having a modulator, such as TCFP-MQWs on a first side of the CCR configured to modulate in a first temperature range, and a modulator on a second ... | 03/18/2008 |
| 7341786 | Indium-containing wafer and method of its manufacture An indium-containing wafer from which removal of mercury can be reliably performed and a method of manufacturing such a wafer are provided in order to make the mercury C-V method, allowing characteristics of a the indium-containing wafer to be measured with high pre... | 03/11/2008 |
| 7342716 | Multiple cavity low-emissivity coatings Multiple cavity low-emissivity coatings. The coating includes three infrared-reflection film regions, which may each include silver. ... | 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 |
| 7339728 | Low-emissivity coatings having high visible transmission and low solar heat gain coefficient Low-emissivity coatings that are highly reflective to infrared radiation. The coating includes three infrared-reflection film regions, which may each include silver. ... | 03/04/2008 |
| 7327454 | Method and apparatus for detecting biomolecular interactions Method and apparatus for detecting biomolecular interactions. The use of labels is not required and the methods may be performed in a high-throughput manner. An apparatus for detecting biochemical interactions occurring on the surface of a biosensor includes a light... | 02/05/2008 |
| 7324266 | Electrooptical element An electrooptical element is disclosed, made from a crystal, for an electrooptical modulator (EOM), for example, a Pockels cell, comprising a housing, with the crystal arranged therein in the form of a vertical cylinder, the both end surfaces of which form a front p... | 01/29/2008 |
| 7324719 | Method tuning optical components integrated in a monolithic photonic integrated circuit (PIC) A method of tuning optical components integrated on a monolithic semiconductor chip having a plurality of first optical components integrated on the chip with each fabricated to approximate an emission wavelength along a given wavelength grid and together forming a ... | 01/29/2008 |
| 7324258 | Semiconductor optical modulator integrated resistor for impedance matching using semiconductor doped layer and method of fabricating the same Provided is a semiconductor optical modulator device in which a resistor for impedance matching is integrated in a device in order to improve performance and to reduce cost during the fabrication of an ultra high speed optical modulator module. A doped layer in an e... | 01/29/2008 |
| 7317506 | Variable illumination source An apparatus and method for providing a variable illumination field for use in lithographic imaging for semiconductor manufacturing includes providing a an illumination system including a variable optical element having an array of addressable elements, each address... | 01/08/2008 |
| 7317860 | Optical device having photonic crystal structure A photonic crystal structural body has a structure that a second mediums whose refractive index changes with an external field is periodically distributed in a first medium whose refractive index changes with the external field. An external field generator applies t... | 01/08/2008 |
| 7315455 | Surface-mounted electronic component module and method for manufacturing the same More compact, thinner, shorter and lighter surface-mounted electronic component modules and their manufacturing methods at low costs, thus making them industrially highly valuable are available. Such the component includes a wiring substrate having wiring patterns f... | 01/01/2008 |
| 7312090 | Label-free methods for performing assays using a colorimetric resonant reflectance optical biosensor Methods are provided for detecting biomolecular interactions. The use of labels is not required and the methods can be performed in a high-throughput manner. The invention also relates to optical devices. ... | 12/25/2007 |
| 7313329 | All optical variable buffer queue useful in optical packet networks A variable optical buffer queue, particularly useful either as an input or an output queue in an optical packet router in a wavelength-division multiplexing (WDM) communication network. An input queue includes plural separately controllable optical delay units dispo... | 12/25/2007 |
| 7313291 | Optical modulator The invention relates to an optically pumped multilayered modulator having surface-normal geometry. The multilayer structure comprises an absorber section through which an optical signal (401) to be modulated is coupled from an input (401) to an output... | 12/25/2007 |
| 7310454 | Photonic bandgap modulator, amplifier, demux, and TDM devices An optical device includes at least two photonic bandgap crystal (PBG) stacks that are each comprised of alternating layers of high and low index materials. A defect region is formed in a cavity region between the at least two photonic bandgap crystal stacks so as t... | 12/18/2007 |
| 7302146 | Apparatus and method for analysis of molecules 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-throughpu... | 11/27/2007 |
| 7301628 | Method and apparatus for detecting biomolecular interactions Method and apparatus for detecting biomolecular interactions. The use of labels is not required and the methods may be performed in a high-throughput manner. An apparatus for detecting biochemical interactions occurring on the surface of a biosensor includes a light... | 11/27/2007 |
| 7300803 | Label-free methods for performing assays using a colorimetric resonant reflectance optical biosensor Methods are provided for detecting biomolecular interactions. The use of labels is not required and the methods can be performed in a high-throughput manner. The invention also relates to optical devices. ... | 11/27/2007 |
| 7295589 | Frequency modulated vertical cavity laser A frequency modulated (FM) vertical cavity surface emitting laser (VCSEL). The frequency modulated VCSEL includes a mirror region that has an active region. The frequency modulated VCSEL also includes a phase adjustment region for use in altering the characteristics... | 11/13/2007 |
| 7294863 | Micro-lens built-in vertical cavity surface emitting laser A micro-lens built-in vertical cavity surface emitting laser (VCSEL) includes a substrate and a lower reflector formed on the substrate. An active layer is formed on the lower reflector, generating light by a recombination of electrons and holes. An upper reflector ... | 11/13/2007 |
