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Match Document Document Title
7233709 Electro-absorption modulator  
Embodiments of the invention provide an electro-absorption modulator including an optical waveguide and a microwave waveguide. The microwave waveguide is electromagnetically coupled to the optical...
7224506 Single side band modulation device  
A single side band modulation device includes a first Mach Zehnder interferometer and a second Mach Zehnder interferometer. The first Mach Zehnder interferometer includes at least two output arms,...
7218800 Compensator for polarization-mode dispersion compensation  
A compensator for compensating polarisation-mode dispersion, comprises a splitter ( 30 ) arranged to split light, according to the light's polarisation, between a first optical path and a second...
7218799 External optical modulator  
An optical modulator structure includes a block that includes electro-optical (EO) materials. A waveguide and electrode structure is formed on a substrate. The block is in close proximity to the...
7212691 Polarization-shaped duobinary optical transmission apparatus  
A polarization-shaped duobinary optical transmission apparatus is disclosed. The apparatus includes a light source that generates light having a continuous wave, an optical intensity modulator that...
7209613 Electromagnetic field sensing apparatus  
An electromagnetic field sensing apparatus includes an optical modulator, a miniature antenna for sensing the electromagnetic field, a light source, a first optical fiber, an optical detector and a...
7209603 Acousto-optical device based on phonon-induced polaritonic band gaps  
The device comprises an optical waveguide and an acoustic wave generating device. The waveguide has an optical band gap and a sharp electronic transition (e.g. an excitonic transition) in the band...
7203396 All optical chopping using logic gates apparatus and method  
An all optical chopping device for shaping and reshaping comprising an all optical AND logic gate having a first input for receiving a first optical signal, a second input for receiving a second...
7194150 Optical modulation element module  
The present invention provides an optical modulation element module capable of stably operating for long periods without limiting the operating conditions. An optical modulation element module...
7184613 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...
7181107 Integrated optics coupling element comprising a grating created in a cladding and its fabrication method  
The invention relates to an integrated optics coupling element that includes a substrate, an optical guide core, an optical cladding independent of the core and surrounding at least one portion of...
7181093 Tunable RF-lightwave modulator  
The present invention provides a RF-lightwave modulator with improved efficiency by making use of a broken loop resonator having a gap therein. In the present invention a RF input signal is coupled...
7177489 Silicon-insulator-silicon thin-film structures for optical modulators and methods of manufacture  
The present invention provides silicon based thin-film structures that can be used to form high frequency optical modulators. Devices of the invention are formed as layered structures that have a...
7174059 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...
7174058 Traveling-wave optoelectronic wavelength converter  
Traveling-wave optoelectronic wavelength conversion is provided by a monolithic optoelectronic integrated circuit that includes an interconnected traveling-wave photodetector and traveling-wave...
7174057 Optical waveguide module, optical waveguide film and manufacturing method thereof  
An optical waveguide module includes a light emitting element which outputs light, a light receiving element which monitors an output of the light emitting element, and an optical waveguide film...
7171063 Controllable electro-optic device having substrate trenches between electrodes  
An optical modulator which has substantially low loss and has an improvement in voltage reduction is disclosed having an electro-optic lithium niobate substrate. The substrate has first, second and...
7167607 Symmetric optical modulator with low driving voltage  
A symmetric optical modulator with low driving voltage, wherein polarization of any one of branched waveguides formed on a substrate is inverted, and the two branched waveguides are simultaneously...
7167293 Silicon-based electro-optic phase modulator with reduced residual amplitude modulation  
An arrangement for removing unwanted amplitude modulation from the output of an electro-optic phase modulator (formed within a silicon-on-insulator (SOI) system) includes resonant filters that are...
7162108 Planar lightwave circuit variable optical attenuator  
The invention relates to a variable optical attenuator constructed as a Mach Zehnder planar lightwave circuit, particularly including a channel waveguide support structure for heat isolation and...
7162106 Systems and methods for a continuously variable optical delay line  
The present invention provides systems and methods that employ a continuously variable optical delay line to introduce a delay into a transmitted optical signal. The delay line comprises a holey...
7155083 Monolithic waveguide/MEMS switch  
A monolithic waveguide/MEMS switch is disclosed that has a waveguide portion and a MEMS mirror portion fabricated on a single substrate, such as a as a silicon-on-insulator wafer. The monolithic...
7155072 Optical modulator  
In relation to an optical modulator (e.g., an RZ optical modulator) formed from a plurality of Mach-Zehnder optical modulators, in an attempt to make the optical modulator compact and realize a low...
7149378 Monolithic waveguide/MEMS switch  
A monolithic waveguide/MEMS switch is disclosed that has a waveguide portion and a MEMS mirror portion fabricated on a single substrate, such as a as a silicon-on-insulator wafer. The monolithic...
7146084 Fiber optic light source for display devices  
A light source includes at least one optical fiber having a length and first and second ends and at least one electromagnetic wave source disposed along at least a portion of the length of the...
7139490 All-optical wavelength converter circuit  
A method and apparatus for transferring information of an optical information-bearing signal from a first wavelength to a second wavelength. The method is implemented in an all-optical wavelength...
7133579 High-speed magneto-optic modulator  
A magneto-optic modulator and method are provided. An optical waveguide having a magneto-optic active medium is magnetized by a biasing magnetic field. The magnetization of the magneto-optic active...
7133578 Optical modulator with an impedance matching region  
An apparatus for eliminating reflection of an input electric signal by providing an impedance matching region between an input region and mutual operation region is disclosed. The impedance may be...
7133576 Traveling-wave optoelectronic wavelength converter  
Traveling-wave optoelectronic wavelength conversion is provided by a monolithic optoelectronic integrated circuit that includes an interconnected traveling-wave photodetector and traveling-wave...
7127178 Optical communication device  
An optical extending device for use in transmission of optical signals which comprise at least one sequence of periodic optical signals, said optical device comprising: a first fiber optic having a...
7127140 Fiber bragg grating device  
There is provided a fiber Bragg grating devise comprising an FBG mount that is constituted by sequentially stacking a temperature control plate, a base plate, and a mounting plate, and an SSFBG in...
7106917 Resonant optical modulators  
A resonant optical modulator comprises a transmission fiber-optic waveguide, a circumferential-mode optical resonator transverse-coupled thereto, a modulator optical component transverse-coupled to...
7103282 All optical clock recovery  
All optical clock recovery includes a transmitter for generating an optical timing signal. The transmitter includes a semiconductor laser for the production of a dynamically synchronizable timing...
7099587 Apparatus and method for delaying optical signals for optical buffering and optical storage applications  
A delayed optical signal is generated from an inputted optical signal by cyclically transmitting the inputted optical signal between at least two ends of an optical medium and outputting the...
7099524 Optical modulator  
The present invention relates to an optical modulator capable of preventing a disconnection of an electrode and improving a discontinuity of a characteristic impedance while realizing a...
7092595 Multiple-wavelength pulsed light source for a wavelength division multiplexed passive optical network  
Various methods and apparatuses are described for a multiple wavelength light source. The multiple wavelength light source may be located in a central office to supply a first broad band of...
7087448 Single frequency laser  
This invention relates to generally to semiconductor devices, for example lasers and more particularly to single frequency lasers and is directed at overcoming problems associated with the...
7082237 Optical modulators operated in parallel push-pull mode  
A Mach-Zehnder interferometer modulator for modulating a beam of laser light includes a pair of separate waveguides through which the laser light is passed after splitting in a splitting zone and...
7079737 Devices and methods for dynamic dispersion compensation  
The present invention provides devices and methods for dispersion compensation. According to one embodiment of the invention, a dispersion compensating device includes a negative dispersion fiber...
7076174 Method, device, and system for processing optical signal  
The present invention relates to a method for processing an optical signal is provided. An optical signal is input into an optical waveguide structure for providing a nonlinear effect. As a result,...
7072550 Method of determining quasi-phase matching efficiency in periodically poled structure of optical waveguide, periodically poled structure of optical waveguide, and optical waveguide using the same  
The present invention relates to a method of determining a quasi-phase matching efficiency in a periodically poled structure of an optical waveguide, a periodically poled structure of an optical...
7068886 Millimeter wave oscillator using fiber Bragg grating  
Provided is a millimeter wave oscillator for generating a high frequency signal required in wireless communication. The millimeter wave oscillator uses an overwritten fiber Bragg grating and a...
7068862 Methods of altering the resonance of waveguide micro-resonators  
Methods of tuning, switching or modulating, or, in general, changing the resonance of waveguide micro-resonators. Changes in the resonance can be brought about, permanently or temporarily, by...
7064891 Optical wavelength converter with a semiconductor optical amplifier  
An optical function device capable of controlling an optical signal with another optical signal, wherein a modulated input light I in of a wavelength λ 1 is coupled with a bias light I bias of...
7062176 Nonlinear phase-shift compensation method and apparatus  
A nonlinear phase-shift compensation method and apparatus is provided for improving system performance in optical transmission systems. The apparatus includes a phase-shift compensating device that...
7054511 Optical coupling device for single mode optical fibers  
A device for coupling incident radiation to a single mode fiber optic a solid state interferormeter having a front end similar to a Mach-Zehnder integrated interferometer and a back end formed by...
7050658 Method and apparatus for reducing system deterioration caused by polarization effects  
A method and apparatus for minimizing system deterioration caused by polarization effects (e.g., a polarization-dependent gain (PDG), a polarization-dependent loss (PDL), and a polarization mode...
7043097 Traveling-wave optoelectronic wavelength converter  
Traveling-wave optoelectronic wavelength conversion is provided by a monolithic optoelectronic integrated circuit that includes an interconnected traveling-wave photodetector and traveling-wave...
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...
Matches 51 - 100 out of 548 < 1 2 3 4 5 6 7 8 9 10 11 >