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7639900 |
Photonic band gap router
An arrangement includes a photonic band-gap assembly comprising at least one input wave guide and at least one output wave guides, and at least one routing element responsive to signals to...
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7620284 |
Optical waveform shaping device including portions for respectively absorbing and amplifying transmitted optical signal
An optical waveform shaping device includes a first waveguide portion, formed on a substrate, for transmitting the optical signal and simultaneously absorbing a portion of the optical signal, which...
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7616843 |
Optical functional device and fabrication process of the same
Arranged for at least one of a pair of branch optical waveguides in a Mach-Zehnder type interference optical system is a ring resonance type phase shifter for modulating a light wave signal...
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7587107 |
Plasmon switch
A variety of structures, methods, systems, and configurations can support plasmons for logic.
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7583868 |
3R recovery system
A full 3R (re-timing, re-shaping, re-amplifying) recovery system is provided. In the full 3R recovery system, a self-pulsating laser diode (SP-LD) and an electroabsorption modulator (EAM) are...
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7580594 |
Optical modulation element and optical modulation device having the same
An optical modulation element includes a waveguide defined based on a defect in a photonic crystal, a carrier conducting region for conducting a carrier to the waveguide, an electrode for injecting...
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7570849 |
Integrated circuit device having optically coupled layers
In an integrated circuit device comprising a vertical arrangement of integrated circuit layers, coupling of an optical signal between a first integrated circuit layer thereof and a second...
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7557980 |
Optical path switching device
An optical path switching device is provided. The optical path switching device utilizes the electro-optic effect to apply an electric field on different reflective elements without moving an...
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7542633 |
Plasmon gate
A variety of structures, methods, systems, and configurations can support plasmons for logic.
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7532776 |
Optical element and optical switch
A core layer of an optical waveguide is grown as a film comprised of an electro-optic material with a rhombohedral structure and grown above a substrate with (100) crystal orientation on a major face.
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7532785 |
Photonic interconnects for computer system devices
Various embodiments of the present invention are directed to photonic interconnects that can be used for on-chip as well as off-chip communications between computer system components. In one...
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7519240 |
Multi-section coupler to mitigate guide-guide asymmetry
A wavelength independent multi-section optical coupler having at least three optical couplers, and at least two differential phase cells. Each optical coupler has two waveguides forming a coupling...
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7515774 |
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...
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7505649 |
Plasmon router
A variety of structures, methods, systems, and configurations can support plasmons for routing.
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7499604 |
Optically coupled resonant pressure sensor and process
A process for fabricating an optically coupled resonant pressure sensor includes the steps of forming a sensor die including at least one optically coupled resonator from a first semiconductor...
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7489836 |
Optical interconnect system for high speed microprocessor input/output (IO)
A microchip includes optical layers with integrated waveguides and modulators. A continuous wave light beam coupled to incoming waveguide(s) is modulated and transmitted off-chip by outgoing...
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7474812 |
Monitor photodetector equipped optical modulator
An optical modulator has, on a substrate having electro-optic effect, an optical waveguide including an input optical waveguide, two branching optical waveguides which branch a light beam incident...
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7460739 |
Lithium niobate optical modulator
An optical modulator comprises a Z-cut lithium niobate substrate ( 21 ) on which is formed a Mach-Zehnder interferometer having two generally parallel waveguides ( 23, 25 ) lying beneath a buffer...
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7450788 |
Optical splitter/coupler and optical communication system
An optical splitter/coupler has: a multimode waveguide having an electrooptic effect, and propagating light in a multimode; one incident waveguide propagating light in a single mode, and inputting...
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7447395 |
Silicon modulator offset tuning arrangement
A silicon-based optical modulator structure includes one or more separate localized heating elements for changing the refractive index of an associated portion of the structure and thereby...
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7440643 |
Variable light controlling device and variable light controlling method
A variable light controlling device comprising a substrate, an optical waveguide disposed on the substrate, a first heater and a second heater to change the optical waveguide's temperature is...
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7434940 |
Light coupling system and method
A light coupling system includes a waveguide, configured to receive light from at least two light sources and to internally reflect light therein; a diffraction grating, disposed upon the...
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7428348 |
Electro-optical switching using coupled photonic crystal waveguides
An electro-optical switch implemented in coupled photonic crystal waveguides is disclosed. The switch is proposed and analyzed using both a finite-difference time-domain (“FDTD”) method and a...
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7426326 |
Low loss bridge electrode with rounded corners for electro-optic modulators
An electro-optic modulator having a substrate, one or more optical waveguides, at least one active electrode formed on the substrate and aligned over the optical waveguide, the active electrode...
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7400788 |
Linearized optical modulator having a plurality of coupling functions
Invention discloses an apparatus that provides linear optical modulation of light carrier signals by an electrical modulation signal. Linearized modulation is achieved through the selection of a...
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7382942 |
Optical waveguide devices
It is provided an optical waveguide device in which the radius of curvature of a curved part of an optical waveguide can be lowered and the radiation loss of light in the curved part can be...
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7379672 |
Photonic RF distribution system
The present photonic RF generation and distribution system provides a system and method for distributing an RF output signal. The photonic RF distribution system includes two optical sources for...
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7366373 |
Plasmon switch
A variety of structures, methods, systems, and configurations can support plasmons for logic.
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7359599 |
Optical near-field generator and near-field optical recording and reproduction apparatus
Decrease in optical near-field intensity is prevented when an light propagating medium made of a high refractive index material, such as a waveguide or a lens, is combined with a scatterer for...
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7349603 |
Optical arrangement with two optical inputs/outputs and production methods
Optical arrangement comprising two parallel plates each with a through-hole forming an optical input/output with a given optical axis and one at least partly optical component placed between the...
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7340142 |
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...
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7336855 |
Integration of a waveguide self-electrooptic effect device and a vertically coupled interconnect waveguide
A self-electrooptic effect device (“SEED”) is integrated with waveguide interconnects through the use of vertical directional couplers. Light initially propagating in the interconnect waveguide...
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7333682 |
Photoelectric composite interconnection assembly and electronics device using same
A photoelectric composite interconnection assembly having: a flexible substrate having an electric interconnection; and an electrical interface provided at both ends of the electric...
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7315665 |
Liquid-crystal planar-waveguide apparatus and method for fast control of polarization and other properties of light
A polarization controller includes a plurality of liquid crystal cells positioned as cladding on a waveguide that propagates a beam of light so that the evanescent field extends into the liquid...
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7315663 |
Electronically controlled photonic crystal optical switch
Various embodiments of the present invention are directed to photonic crystal switches. In one embodiment, a photonic crystal switch a photonic crystal switch includes a photonic-crystal-based...
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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...
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7308161 |
System and method for wavelength selective switching employing single-element gratings
A wavelength selective switch device is disclosed that includes an elongated signal communication path extending from a first end of the device to a second end of the device. The signal...
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7302140 |
Optical switch and matrix optical switch
The invention provides an optical switch including a substrate which has conductivity or semiconductivity, an optical waveguide layer which is formed on the substrate, and a control electrode which...
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7302141 |
Y-branch-based thermo-optic digital optical switches and variable optical attenuators with non-uniform heating
The present invention is concerned with 1×2 thermo-optic digital optical switches known in the art as “Y-branch digital optical switches” and variable optical attenuators.
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7292740 |
Apparatus and method for controlling transmission through a photonic band gap crystal
An apparatus ( 10 ) and method for dynamic frequency control of a photonic band gap crystal includes an acoustic band gap crystal ( 12 ) having a defect site ( 14 ), a photonic band gap crystal (...
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7260286 |
Optical fiber coupling having liquid crystal adaptive coupler
An optical fiber coupling, for example, an optical switch, for coupling a light source with a light-receiving end face of an optical waveguide comprises a lens for focusing a light beam emitted...
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7260280 |
Optical device
The present invention provides a highly-integrated and compact optical element and further provides an optical element having various functions such as lower driving voltage, chirping suppression...
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7242821 |
Enhanced performance mode converter
An optical mode converter comprising a slow wave electrode structure and including Schottky barriers for preventing an accumulation of free carriers in the optical waveguide region of the...
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7233725 |
1×N fanout waveguide photodetector
A 1×N fanout waveguide detector is disclosed. The detector includes a multiple-mode interference (MMI) cavity with input and output ends. A single-mode waveguide is optically coupled to the input...
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7231102 |
Electrooptic modulator employing DC coupled electrodes
Optical devices are provided for optical signal modulation under the control of an electrical signal propagating along a traveling wave electrode structure. The electrode structure comprises a...
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7228014 |
System for reducing the electrical return loss of a lithium niobate traveling wave optical modulator with low characteristic impedance
An electro-optical modulator is disclosed that has a microwave input, chip with a thin film resistor or a lumped resistor located between an input RF connector and an RF electrode on a Lithium...
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7224869 |
Low loss electrodes for electro-optic modulators
An electro-optic modulator includes a substrate, at least two parallel optical waveguides, at least one ground plane, at least one active electrode with at least two lower portions of the active...
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7212700 |
Electro-optic hybrid circuit board
The invention provides an electro-optic hybrid circuit board having an optical waveguide superposed on a wiring circuit board, the electro-optic hybrid circuit board comprising: an insulating...
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7200290 |
Optical switch
An optical switch has an optical waveguide whose output path of an optical signal branches into two, a carrier injection section which is provided to a branch portion of the optical waveguide and...
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7197197 |
Method for detecting projectile impact location and velocity vector
A method of determining the path of a projectile comprises detecting multiple time of arrivals of the projectile in multiple intersecting planes and determining the path and speed of the projectile...
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