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7609932 |
Slot waveguide structure
A nanometer slot waveguide includes a nanometer slot waveguide structure with vertically stacked layers. The vertically stacked layers include a substrate, a first waveguide layer defining a first...
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7603001 |
Method and apparatus for providing back-lighting in an interferometric modulator display device
Methods and apparatus for providing light in an interferometric modulator device are provided. In one embodiment, a microelectromechanical system (MEMS) is provided that includes a transparent...
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7599595 |
Semiconductor optoelectronic waveguide
The present invention relates to a semiconductor optoelectronic waveguide having a nin-type hetero structure which is able to stably operate an optical modulator. On the upper and lower surfaces of...
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7590313 |
Phased-array optical whispering gallery mode modulation and method
A whispering gallery mode (WGM) resonator device and method capable of filtering sidebands of optical modulators are provided. The method includes providing an optical resonator adapted to support...
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7590312 |
Interferometer optical switch and variable optical attenuator
The present invention discloses an interferometer optical switch that can carry out switching over a broad band and has a high extinction ratio and large fabrication tolerance. The interferometer...
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7583874 |
Controlling optical resonances via optically induced potentials
Influence of distance between two coupled strong-confinement photonic devices on optically resonant condition thereof and/or on optical forces.
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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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7583329 |
Electro-optical device substrate, electro-optical device and electronic apparatus
An electro-optical device substrate includes a substrate, a plurality of data lines, a plurality of scanning lines, pixel electrodes, and transistors. The plurality of data lines and the plurality...
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7580592 |
Optical phase shift device and antenna system utilizing same
A phase shift device of an optical fiber signal includes an actuator for changing the signal phase in at least one fiber portion by inducing the phase change by thermo-optical effect. An antenna...
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7577367 |
Optical communication using duobinary modulation
Optical techniques, devices and systems for combining duobinary modulation and optical subcarrier multiplexing in optical communication applications. An analog mixer is used to mix a duobinary...
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7577319 |
Semiconductor optical device and manufacturing method thereof
A low reflective window structure in an existent electro-absorption optical modulator involves a trading off problem between the increase in the parasitic capacitance and the pile-up. This is...
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7577318 |
Wavelength conversion layers with embedded crystallites
The present invention is directed to a wavelength conversion layer ( 1 ) with a matrix layer ( 2 ) comprising embedded rare-earth-ion-doped micro-crystallites ( 3 ) and/or rare-earth-ion-doped...
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7574081 |
Optical system with optical waveguides
The present invention provides an optical system with waveguides, which comprises first, second and third optical input/output means ( 12, 14, 16 ), fourth and fifth multi-mode optical waveguides (...
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7567736 |
Waveguide type wavelength domain optical switch
A waveguide type wavelength domain optical switch includes an input/output port including at least three waveguide spectrometers stacked in thickness direction, a first lens for collecting light...
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7565038 |
Thermo-optic waveguide apparatus
Apparatus including a waveguide segment having a cladding that surrounds an optically-transmissive core extending along a path; a heater in thermal communication with the waveguide segment along at...
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7565037 |
Reducing depolarisation
The present invention provides a method for reducing spreading of a pulse in a transmission line, said spreading being as a result of polarization mode dispersion, comprising inducing predetermined...
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7561806 |
Method and system for keeping timing alignment between driving signals in optical double modulation
A method and system is disclosed for making timing alignment for a data transmission system, the method comprising providing a reference clock signal with a first frequency to a multiplexer through...
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7561759 |
Optical modulator
Optical modulator devices exhibiting improved response characteristics are constructed from a ring resonator having a tunable loss element positioned within the ring resonator structure and one or...
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7558450 |
Microwave photonic delay line with separate tuning of optical carrier
This invention provides a tunable delay of an optical signal having a carrier with an angular frequency ω 0 and a single side band having a signal band with a median angular frequency ω r . The...
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7558445 |
Electro-optical device and electronic apparatus
An electro-optical device includes a semiconductor layer, a gate electrode, and a first insulating film, and a second insulating under the semiconductor layer. The first insulating film overlaps a...
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7555226 |
Automatic bias control for an optical modulator
An automatic bias controller for an optical modulator is provided. The automatic bias controller comprises a driver for providing an electrical data signal to the modulator and a bias voltage...
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7555177 |
All fiber magneto-optic on-off switch for networking applications
A fiber optic switch based on the magneto-optic effect of magnetic materials is presented. Due to the optical fiber based construction of the switching device it is suitable for optical fiber...
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7551809 |
Optical fiber delivery system for delivering ultrashort optical pulses and optical system including the same
An optical fiber delivery system for delivering ultrashort optical pulses that can efficiently transmit high peak power, ultrashort optical pulses from an optical pulse source to a desired position...
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7551808 |
Optical signal noise suppressor and optical signal noise suppressing method
The present invention provides an optical signal noise suppressor and an optical signal noise suppressing method that can decrease noise components to be superimposed on signal light. The optical...
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7546017 |
Electro-photonic modulators
Various embodiments of the present invention are directed to modulators that can be operated electronically and used to modulate electromagnetic radiation. In one embodiment of the present...
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7535434 |
Light emission control for forming two-dimensional and three-dimensional images
Systems and methods are disclosed for providing a more robust flat panel display by using the Faraday effect to control light emission from a solid state material so as to form two-dimensional or...
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7526209 |
Optical frequency shift keying modulator
An optical FSK modulator which can be used for an optical information communication is provided. The optical FSK is provided with: a second sub Mach-Zehnder waveguide (MZ B ) 3 ; a main...
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7526146 |
Electro-optical modulator and a method for manufacturing the same
An electro-optical modulator is provided. The electro-optical modulator has a substrate. A first insulator layer, an optical waveguide, a first doped semiconductor layer, a second insulator layer,...
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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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7515833 |
Optical double sideband modulation technique with increased spectral efficiency
An all optical network for optical signal traffic has at least a first ring with at least one transmitter and one receiver. The first ring includes a plurality of network nodes. At least a first...
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7515791 |
Phase matched optical grating
The invention relates to phase matched optical gratings for performing signal multiplexing and demultiplexing in optical communications networks. In prior art gratings there is a phase linearity...
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7515779 |
Optical semiconductor device
An optical semiconductor device has a heater, an optical waveguide layer, a first electrode and a second electrode. The heater is provided on a first semiconductor region and has more than one...
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7515775 |
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...
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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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7502530 |
Optical waveguide devices and traveling wave type optical modulators
A device 4 has a substrate 5 , an optical waveguide 2 and modulation electrodes 1 A, 1 B, 1 C. The substrate 5 is made of an electro-optic material and has a thickness of ≦30 μm at...
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7499603 |
Range extended electrooptic modulator
Methods, systems, and devices are provided for an electrooptical modulator. One method embodiment includes receiving an optical input signal to an electrooptical modulator. A first voltage input is...
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7496244 |
Method for generating a linear single polarization output beam
A method for generating a linear single-polarization output beam comprises providing an optically active linearly birefringent and linearly dichroic fiber for propagating light and having a single...
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7486897 |
Polarization duobinary optical transmitter
A polarization duobinary optical transmitter is disclosed. The transmitter includes a precoder for coding an electric signal and a light source for generating continuous light. The transmitter also...
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7483642 |
Receiver for OTDM/PDM optical signals
A receiver for an OTDM/PDM pulse train ( 10 ) in which the pulses ( 12 ) have alternating polarizations (P 1, P 2 ) has a polarization insensitive optical switch ( 16; 161, 162, 163, 164 ) for...
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7483609 |
Image wavelength conversion device, method of manufacturing the device, and image conversion system using the device
An image wavelength conversion device for converting an infrared light image into a visible light, a method of manufacturing the device, and an image conversion system using the device are...
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7483597 |
Optical modulator utilizing multi-level signaling
An optical modulator is formed to include a plurality of separate electrodes disposed along one arm, the electrodes having different lengths and driven with different signals to provide for...
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7480423 |
All-fiber phase controlled delay interferometer and method of making the same
An all-fiber, phase controlled interferometer device is disclosed as well as its method of manufacture. This device is suitable for use in an optical DPSK demodulation system. It is comprised of...
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7480091 |
Delay-line demodulator and method of adjusting a phase shift in the demodulator
In a method of phase adjustment for the demodulator 1 of the present invention, the phase adjustment is performed by driving any one of the heaters on the two waveguides 10 and 11 in the...
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7474810 |
Method and apparatus for controlling light flux with sub-micron plasmon waveguides
Apparatuses and methods for modulating electromagnetic radiation are disclosed. A plasmon waveguide including an array of metallic nanoparticles disposed on a dielectric substrate is provided. The...
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7471859 |
Programmable optical grating device and method
An optical waveguide has a surface. An array of separately actuated bodies is disposed proximal to the exposed surface, and an actuator separately actuates at least some of the bodies to change a...
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7466923 |
Polarization mode dispersion compensation
Methods and systems for PMD compensation in an optical communication system are implemented by transmitting multiple optical signals through a common optical conduit to an optical compensator that...
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7460746 |
Tunable multi-loop opto-electronic oscillator with tunable RF or microwave filter based on optical filtering
Multi-loop opto-electronic oscillators using tunable RF or microwave filters that achieve signal filtering in RF or microwave frequencies by optical filtering and signal tuning by optical tuning.
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7457494 |
Dispersion compensator, optical transmission system and optical transmission method
A variable dispersion slope compensator with a high-accuracy and a low-cost structure for compensating the dispersion slope compensation error accompanying variations in the zero-dispersion...
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7447443 |
Method and system for keeping time alignment between optical data modulation and a periodically modulated light source
A method and system is disclosed for making time alignment for a data transmission system. A first reference clock signal is provided to a first multiplexer coupled to a data modulator through a...
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7447386 |
Cascaded modulator system and method for QKD
A cascaded modulator system ( 20 ) and method for a QKD system ( 10 ) is disclosed. The modulator system includes to modulators (M 1 and M 2 ) optically coupled in series. A parallel shift...
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