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7039324 Method, device, and system for regenerating optical signal  
The present invention relates to a method for regenerating an optical signal suitable for WDM (wavelength division multiplexing). In this method, an optical signal is supplied to an optical...
7039285 Method of manufacturing photonic crystal, mask, method of manufacturing mask and method of manufacturing optical device  
A method of manufacturing a photonic crystal has the step of: a first step of providing a predetermined film for which a photonic crystal is manufactured; and a second step of irradiating...
7039258 Distributed amplifier optical modulators  
High speed optical modulators can be made of k modulators connected in series disposed on one of a variety of semiconductor substrates. An electrical signal propagating in a microwave transmission...
7035499 ON/OFF optical switching using combined acousto-optic and electro-optic switches  
A light beam on a single optic fiber carries time division multiplexed information originating from multiple sensors driven from a single light source. An optical switch apparatus coupled in series...
7035487 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...
7035486 Photonic integrated device  
A photonic integrated device having a substrate layer, epitaxial layers formed on said substrate layer and a guiding layer formed by one of the epitaxial layers. An optical waveguide is formed...
7035484 Tunable optical filter  
A tunable optical filter is provided that includes an array of independently tunable filter elements. Each of the elements is located along a different optical path that extends between an input...
7031558 Low-pass filter transmission line with integral electroabsorption modulator  
A low-pass filter transmission line with an integral electro-absorption modulator is described. In one aspect, the electro-absorption modulator functions as an element of a distributed low-pass...
7027669 Methods and apparatus for optical pulse generator with progressive phase shift  
Systems and techniques for generating optical pulses exhibiting a progressive phase shift, and the use of those pulses to transmit data, are described. One embodiment of the invention employs a...
7024057 Optical device having dual microstrip transmission lines with a low-k material and a method of manufacture thereof  
The present invention provides an optical device. In one embodiment, the optical device includes an optical waveguide formed in or over a ridge located on a substrate. The optical device also...
7024056 Electro-optic gating arrangement with improved duty cycle  
The device includes an oscillator ( 1 ) to generate an electrical signal of a predetermined frequency and a signal divider ( 2 ) to split the electrical signal into first and second signals. The...
7016554 Optical modulator  
The present invention provides an optical modulator for modulating an optical carrier by an electrical signal. The modulator comprises a first and a second waveguide for guiding the optical...
7010183 Surface plasmon devices  
A device including an input port configured to receive an input signal is described. The device also includes an output port and a structure, which structure includes a tunneling junction connected...
7010179 Differential drive semiconductor optical modulator  
A differential drive semiconductor optical modulator includes: a differential driver circuit having output pads which can output a pair of differential signals; a transmission-line substrate having...
7006726 Method and apparatus for optical division of a broadband signal into a plurality of sub-band channels  
A data signal is modulated onto an optical carrier, sub-band channels are then removed therefrom by microresonators, and each data sub-band channel is then combined in a detector with a...
7003180 Apparatus for providing timing jitter tolerant optical modulation of a first signal by a second signal  
Apparatus for providing timing jitter tolerant optical modulation of a first signal by a second signal, the first signal having a first wavelength, the second signal including a plurality of second...
6996304 Small form factor transceiver with externally modulated laser  
This disclosure is concerned with transceiver modules. In one example, a transceiver module includes a receiver optical subassembly, as well as a transmitter optical subassembly having a header...
6996300 Device for optical signal transmission between two units movable relative to each other  
A device for transmitting information between at least two units mobile relative to each other comprises a light guide having a light-guiding medium, the optical properties of which can be changed...
6993258 WDM transmitter  
A WDM transmitter comprising an array of M pump lasers multiplexed by an M×N multiplexer, in the form of a coupler, and used to feed an array of N optically pumped fiber lasers emitting at...
6990274 Apparatus and method for adjusting the spectral response of an optical waveguide grating  
Apparatuses and methods for adjusting the spectral response of an optical waveguide grating include a longitudinal optical waveguide grating attached to a support member having a centroidal axis....
6990260 Extended intensity-based optical sensor  
An extended optical sensor comprises a plurality of equally spaced intensity-based point sensors connected in parallel such that the optical path lengths are the same within the extended sensor...
6990258 Optical modulator  
An optical modulator consists of an electrical input for receiving an electrical control signal, an optical output for outputting an optical signal, and at least two optical cavities coupled...
6990256 Segmented modulator for high-speed opto-electronics  
An optical modulator includes first and second modulator segments. The first and second modulator segments form an optical signal path for an optical signal. The optical modulator also includes an...
6987904 Variable-optical-delay apparatus  
A variable-optical-delay apparatus with a single wavelength converter and optical loop path has an optical modulator able to adjust the delay time according to the input optical signal. The...
6985652 Optical switching device and optical device  
An optical switching device including a substrate and at least an organic film as a light control part formed on the substrate. Optical switching is performed by applying signal light and control...
6985648 Method of in-wafer testing of monolithic photonic integrated circuits (PICs) formed in a semiconductor wafer  
A method of in-wafer testing is provided for a monolithic photonic integrated circuit (PIC) formed in a semiconductor wafer where each such in-wafer circuit comprises two or more integrated...
6983085 Optical transmission circuit  
The optical transmission circuit of the present invention has an optical modulator 12 which modulates continuous light at wavelength λo with a signal at repetition frequency fo Hz and outputs...
6978056 Waveguide modulators having bias control with reduced temperature dependence  
Optical modulators with reduced temperature dependence on bias control are described. A set of bias electrodes is arranged relative to a set of RF electrodes in a manner which results in the...
6975781 Characteristic adjustment method of multistage Mach-Zehnder interferometer type optical circuit and multistage Mach-Zehnder interferometer type optical circuit  
A multistage Mach-Zehnder interferometer type optical circuit including any number of symmetrical Mach-Zehnder interferometers and any number of asymmetrical Mach-Zehnder interferometers connected...
6963677 Optical memory and logic using cross-switches  
An all-optical, asynchronous binary storage cell implemented by optically induced total internal reflection cross-junction waveguide switches. The term “all-optical” refers to directing of...
6959123 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...
6954558 Method and apparatus for phase shifting an optical beam in an optical device  
An apparatus and method for high speed phase modulation of optical beam with reduced optical loss. In one embodiment, an apparatus includes a first region of an optical waveguide disposed in...
6947613 Wavelength selective switch and equalizer  
A device comprising a light modulator including a plurality of elements wherein each element is selectively operable such that the plurality of elements are dynamically configurable to combine...
6944366 Planar lightwave wavelength device using moveable mirrors  
A method and apparatus are disclosed for adjusting the phase of an optical signal by varying the path length of the optical signal using one or more moveable mirrors. The phase adjustment...
6934445 Direct space-to-time pulse shaper and optical word generator  
An optical communications subsystem is proposed to permit the multiplexing of multiple, parallel electronic data streams onto a serial, very high speed optical data channel. The subsystem may also...
6934424 E-field-modulated bistable molecular mechanical device  
A molecular system is provided for nanometer-scale reversible electronic and optical switches, specifically, electric field-activated molecular switches that have an electric field induced band gap...
6928209 Optical add and drop multiplexer using ring resonators  
An optical add/drop multiplexer may be formed using ring resonators. In some embodiments, ring resonators may be used instead of Bragg gratings in a Mach-Zehnder interferometer configuration. One...
6925212 Optical transmission apparatuses, methods, and systems  
Apparatuses, methods, and systems are disclosed for controlling optical signal wavelength spacing by providing for simultaneous upconversion of a plurality of electrical signal on subcarrier...
6920254 Method for controlling the polarization of an optical signal and an optical component for polarization control of light in planar waveguides  
By a method for controlling the state of polarization (SOP) of an optical signal transmitted through an optical waveguide, the waveguide is buried in a planar structure and a plurality of...
6920253 Optical modulator based on a microdisk resonator  
A modulator having a waveguide and a microdisk resonator is disclosed. The waveguide has an input port for receiving a light signal of wavelength λ and an output port for transmitting modulated...
6917736 Method of increasing number of allowable channels in dense wavelength division multiplexing  
A phased-array device for wavelength division multiplexing/demultiplexing, comprising at least one input channel, a plurality of output channels, and an irregularly sampled array of phase...
6917729 Tailored index single mode optical amplifiers and devices and systems including same  
A semiconductor laser device includes a tailored index single mode power amplifier. A high-power laser system can be produced by connecting several of the tailored index single mode power...
6915045 Optical waveguide type grating element, production method thereof, multiplexer/demultiplexer module, and optical transmission system  
The present invention relates to an optical waveguide type grating element and others in structure for decreasing absolute values of chromatic dispersion occurring in selective reflection of each...
6909817 Electro-optic modulators with internal impedance matching  
A resonant optical modulator includes an electro-optical substrate, an optical waveguide formed in the substrate and having a variable index of refraction, and an active modulator electrode formed...
6901174 Device and method for multiplication of repetition frequency in optical pulse trains  
The present invention relating to a device and method for multiplication of repetition frequency in optical pulse trains. The device and the method multiply repetition frequency of optical pulse...
6898335 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...
6891996 Resonant optical power control device assemblies  
An alignment device includes an alignment member with one or more waveguide-alignment grooves, resonator alignment grooves, and/or an alignment groove for a second optical element such as a...
6891982 Optical modulation device having excellent electric characteristics by effectively restricting heat drift  
An optical waveguide for guided an incident light is formed on a substrate having an electro-optic effect. A first buffer layer is formed to cover an upper surface of the substrate. A conductive...
6891981 Optical transmission apparatuses, methods, and systems  
Apparatuses, methods, and systems are disclosed for controlling optical signal wavelength spacing by providing for simultaneous upconversion of a plurality of electrical signal on subcarrier...
6888974 On-chip optical signal routing  
A microchip may include an optical signal routing system. The optical routing system may include a distribution waveguide coupled to a light source and signaling waveguides interconnecting source...
Matches 101 - 150 out of 550 < 1 2 3 4 5 6 7 8 9 10 11 >