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8180183 Parallel modulator photonic link  
An RF photonic link having at least one light source, at least one photodetector, multiple optoelectronic modulators, and an RF waveguide common to each one of said multiple optoelectronic...
8175465 Bias control apparatus and method for optical modulator  
Examples of apparatus and methods are provided for controlling a bias in an optical modulator. An exemplary apparatus may comprise an optical modulator operable to modulate an optical signal. The...
8155484 All-optical devices and methods for data processing  
An all-optical device for data processing is presented. The device comprises at least one optical waveguide unit (10) made of linear media and configured to provide multiple total internal...
8149492 Optical modulator  
An optical modulator has an optical splitter for splitting an input light beam into a first and second light beam; a first and a second wave-guide arm connected to the optical splitter for...
8135242 Optical modulator  
In an optical modulator, an intermediate substrate is provided separate from a main substrate on which a plurality of optical modulation sections are provided in parallel, and signal lines...
8116600 Optical phase modulation element and optical modulator using the same  
Provided is a small-size optical phase modulation element and an optical modulator using it. The optical phase modulation element includes a Plasmon waveguide having a clad made of a metal material...
8098965 Electroabsorption modulator based on fermi level tuning  
A novel electroabsorption modulator based on tuning the Fermi level relative to mid-gap states in a semiconductor. The modulator includes a semiconductor waveguide that has an input port and an...
8078027 Focus enhancing electromagnetic wave propagating device  
A focus enhancing electromagnetic wave propagating device includes a main body formed with a main wave-propagating structure (MS) for focusing an electromagnetic wave into a focusing light spot,...
8077375 Method and apparatus for generating 8-QAM-modulated optical signal  
A system and method for producing an 8-QAM-modulated signal are disclosed. The methodology, in an exemplary expedient, generally comprises splitting light from a CW laser into two parts; modulating...
8078015 Optical modulator  
In an optical modulator, lights that have been branched by an input optical branching section are input via curved waveguides to a plurality of optical modulation sections arranged in parallel on...
8072669 Methods and apparatus for generating 16-QAM-modulated optical signal  
A system and method for producing a 16-QAM-modulated signal are disclosed. The methodology, in an exemplary expedient, generally comprises splitting light from a CW laser into two parts; modulating...
8070368 Hermetically packaged LiNbO3 optical circuit with oxidizing fill gas  
A hermetically packaged integrated optical circuit includes an integrated optical circuit and a hermetically sealed container, which defines a volume. The integrated optical circuit is secured...
8060007 Adaptive crosspole technique  
An RF signal processing device which includes a countermeasure set connected to the processing device. The RF signal processing device shifts an incoming RF signal by ninety degrees and combines...
8031012 Optoelectronic oscillator and pulse generator  
The objects of the present invention are to shorten a cavity length of an optoelectronic oscillator and to integrate on a semiconductor or SiO2-substrate. An optoelectronic oscillator 10 have an...
8027552 Monolithic optical transmitter and receiver apparatus incorporating hollow waveguides  
A transmitter apparatus (2) is described that comprises one or more lasers (4), modulation means (10) to intensity modulate radiation output by each of said one or more lasers (4), and output means...
8023776 Mach-Zehnder type optical modulator  
A Mach-Zehnder type optical modulator includes an optical waveguide formed in an electro-optical substrate, an input section that inputs light to the optical waveguide, a plurality of branch...
8023775 Super flat optical frequency comb signal generator  
An optical frequency COM generator generating an optical frequency COM having flat spectrum characteristics using a single modulator. The optical frequency COM generator has a drive signal system...
8019185 Unit-cell array optical signal processor  
This invention provides a versatile unit cell as well as programmable and reconfigurable optical signal processors (such as optical-domain RF filters) that are constructed from arrays of those unit...
8014636 Electrical contacts on top of waveguide structures for efficient optical modulation in silicon photonic devices  
A phase modulation waveguide structure includes one of a semiconductor and a semiconductor-on-insulator substrate, a doped semiconductor layer formed over the one of a semiconductor and a...
8009937 Charge-based memory cell for optical resonator tuning  
An optical resonator configured to be tuned using a charge-based memory cell includes an optical cavity configured to transmit light and receive injected charge carriers; a charge-based memory cell...
8009940 Photonic integrated circuit with improved signal quality and electrostatic discharge threshold  
Embodiments of the present invention provide for enhanced monitoring of optical signal characteristics of an optical signal propagating in a signal channel of a photonic integrated circuit. The...
7974540 Communication system and communication method using the same  
A communication system capable of employing polarization-dependent phase modulators with a reversing configuration that preserves security against disturbance of a polarization state at a...
7970241 High efficient silicon-on-lithium niobate modulator  
A modulator includes an electro-optical substrate and a first and second waveguide formed of a doped semiconductor material positioned on a surface of an electro-optical substrate forming a slot...
7961373 High-resolution digital phase modulator for a fiber-optic signal transmission or measurement device  
A digital phase modulator for a fiber-optic measurement device. A predetermined total number of electrodes of different lengths are arranged in parallel and on both sides of a light guidance path...
7953303 Method and system for generating flat or arbitrary shaped optical frequency combs  
A method and system for generating an optical frequency comb that employs a dual parallel modulator that inputs an optical signal at a center frequency of a desired optical frequency comb and an RF...
7953305 Optical waveguide device and producing method thereof  
An optical waveguide device includes; a substrate having an electro-optic effect, and a first optical waveguide and a second optical waveguide formed substantially in parallel on a top face of the...
7941011 Multilevel light intensity modulator  
In a multilevel light intensity modulator of the invention, input light is branched into n (n is an integer of 2 or more), and respectively sent to n branching waveguides. On the branching...
7929813 QAM optical modulators  
An exemplary optical modulator includes an interferometer. The interferometer includes an input optical coupler, an output optical coupler, and two or more controllable optical waveguides. Each...
7916981 Optical modulator  
An optical modulator, including: a substrate; an optical waveguide embedded in the substrate; a traveling wave electrode mounted on the substrate and having a traveling wave applied thereon so that...
7912326 Optical control device  
A light control element is provided with a thin board having electro-optical effects; an optical waveguide formed on the thin board; and a control electrode for controlling light that passes...
7899276 Distributed amplifier optical modulator  
Various embodiments described herein comprises an optoelectronic device comprising a waveguide structure including a plurality of optical modulator elements each having an optical property that is...
7877021 Electrically programmable pulse generator, in particular a pulse generator of very high resolution phase and intensity profiles  
In a pulse generator of very high resolution phase and/or intensity profiles, an active mode-locking laser source (1) emits a first train of optical pulses according to a determined period (To),...
7869669 Optical phase modulator  
The invention provides an optical phase modulator having a substrate made of an electro-optical material, a signal electrode provided on the substrate and first and second ground electrodes...
7869668 Method for generating carrier residual signal and its device  
A method for generating a carrier residual signal and its device, in which a heterodyne optical signal used in a photometric field or an optical fiber radio communication field can be stably...
7865053 Multi-semiconductor slab electro-optic modulator and process for using the same  
In one embodiment, the apparatus includes a substrate having a surface and an optical waveguide having a ridge-shaped semiconductor optical core, the ridge-shaped semiconductor optical core being...
7856155 Light modulator and its fabrication method  
It is an object of the invention to provide a light modulator using a thin plate having a thickness of 20 μm or less and capable of stably holding a conductive film suppressing troubles such as ...
7851782 Photodetector including multiple waveguides  
An example photodetector includes a waveguide structure having an active waveguide comprising an absorber for converting photons conveying an optical signal into charge carriers conveying a...
7853155 Method for adjusting bias in optical transmitter with external modulator  
A method for operating an optical transmitter for transmission of an optical signal over a dispersive fiber optic media to a remote receiver. The method includes the steps of providing a respective...
7848601 Integrated optical latch  
Techniques are disclosed for optical switching and data control, without the interaction of electronic switching speeds. In one example embodiment, a common cavity optical latch is provided that...
7848599 Optical device with large thermal impedance  
Embodiments of an optical device, an array of optical devices, and a technique for fabricating the optical device or the array are described. This optical device is implemented on a substrate (such...
7844146 All-fiber module for femtosecond pulse compression and supercontinuum generation  
An all-fiber optical pulse compression arrangement comprises a concatenated arrangement of a section of input fiber (e.g., a single mode fiber), a graded-index (GRIN) fiber lens and a section of...
7844149 Humidity tolerant electro-optic device  
The invention relates to an electro-optic modulator structure containing an additional set of bias electrodes buried within the device for applying bias to set the operating point. Thus the RF...
7844147 Dynamic waveform shaping in a continuous fiber  
A system for dynamic waveform shaping in an optical fiber comprising: the optical fiber receiving an optical waveform, the optical waveform having individual spectral lines; a plurality of fiber...
7840103 Performance compensated Tx/Rx optical devices  
A wavelength division multiplexing system has a wavelength division multiplexer and a wavelength division demultiplexer. The wavelength division demultiplexer is in series with the wavelength...
7826688 Enhancing the sensitivity of resonant optical modulating and switching devices  
Embodiments of the inventions described herein comprise a device and method for manipulating an optical beam. The method comprises propagating an optical beam through a waveguide in proximity to a...
7826689 Optical device which outputs independently modulated light beams in respective TE and TM polarization modes  
According to an aspect of an embodiment, an optical device comprising: a first modulator for independently modulating first light having a first predetermined polarization mode; a second modulator...
7822348 Adaptive pulse shape control  
A method, apparatus, and computer program product are provided for optimizing the pulse shape of optical signals output from an optical transmitter. The optical transmitter includes an optical...
7817879 Optical waveguide device  
An optical waveguide device including a dielectric substrate and a folded waveguide formed on the substrate, including a first waveguide and a second waveguide, one part of the first waveguide...
7809218 Optical modulators  
An object of the present invention is, in an optical modulator, to increase the production yield by enhancing the patterning accuracy of the electrodes, as well as to reduce the electrode loss by...
7787713 Integrated optical waveform modulation  
A method of modulating an optical carrier. A target carrier modulation is computed based on an input data signal. An effective length of an optical modulator is then controlled based on the target...
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