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8184929 |
Method of tuning optical components integrated in a monolithic photonic integrated circuit (PIC)
An optical transmitter comprises a monolithic transmitter photonic integrated circuit (TxPIC) chip that includes an array of modulated sources formed on the PIC chip and having different operating...
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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...
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8174715 |
Image forming apparatus that prints image file stored in external memory
An image forming apparatus includes: a memory connecting portion, to which an external memory is detachably connected; a detecting portion that detects a connection state of the external memory; a...
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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...
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8150218 |
Thermo-optical phase shifter
Provided is a thermo-optical phase shifter including a composite body having an optical waveguide formed by a core and a clad and having a ratio Δ of a difference between a core refractivity and a ...
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8150223 |
Thermal tuning of an optical device
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...
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8131119 |
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...
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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...
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8111953 |
Optical power modulation vital sign detection method and measurement device
A vital sign measurement device includes a sensor fixation device, a sensor frame, an optical sensing system, and an output unit. The sensor fixation device is adapted to be placed against an...
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8098968 |
Silicide thermal heaters for silicon-on-insulator nanophotonic devices
A thermally switched Silicon-On-Insulator (SOI) photo electronic device includes a silicon layer including an optical waveguide and a silicide heating element horizontally adjacent to the...
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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...
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8090226 |
Optical waveguide device and method for suppressing temperature crosstalk of optical waveguide device
An optical waveguide device includes: a substrate having an electro-optical effect; an optical waveguide section formed on the substrate; and a plurality of modulating electrodes for modulating...
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8086078 |
Electronic device
An electronic device in which a signal electrode has a bent portion. Earth electrodes are formed with the signal electrode between. A width of a gap at the bent portion between the signal electrode...
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8081851 |
Electrooptical high-index contrast waveguide component
A high-index contrast waveguide component is presented, which is based on the fast changing of the transmission properties of an optical waveguide by applying electric voltages, or by embossing...
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8078016 |
Optical circuit device and method
Techniques are generally disclosed for optical devices that may be used to implement a variety of logic devices or other circuits by optical means. Example optical devices use a photodiode to alter...
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8078014 |
High-speed electro-optical modulator
A method of amplitude electro-optic modulation. The method includes transmitting a narrowband laser light into an electro-optically active waveguide in a first direction. The electro-optically...
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8078013 |
Dual-layer thermally tuned optical device
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 using two...
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8059965 |
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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8050524 |
Optical device and method related thereto
An optical device includes an electrooptic crystal substrate, a polarization-inverted region formed in a part of the electrooptic crystal substrate, an optical waveguide formed in the electrooptic...
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8045830 |
Apparatus and method for excitation of a single mode in a waveguide
A wave-guiding system and method for mode-selective transmission of a spatially coherent light beam is disclosed. The system comprises a wave-guide with an inlet and an outlet for transmitting one...
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8031983 |
Light modulation device
The present invention is directed to provide a light modulation device capable of not only restricting the faint light propagating in the adhesive layer from being re-incident on the thin substrate...
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8031984 |
Semiconductor optical modulator
The present invention can provide an npin-type optical modulator that has a high withstand voltage and is easily fabricated. A semiconductor optical amplifier (10) according to an embodiment of the...
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8027554 |
Thermo-optic phase shifter and method for manufacturing same
The thermo-optic phase shifter (200) according to an exemplary aspect of the invention includes: a substrate (201); a sacrificial layer (202) formed above the substrate (201); a first cladding...
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8023774 |
Method, apparatus and system for minimally intrusive fiber identification
A method, apparatus and system for minimally intrusive fiber identification includes imparting a time-varying modulation onto an optical signal propagating in an optical fiber and subsequently...
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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...
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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...
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8019189 |
Low-speckle light source device
A laser light source device which can inexpensively achieve a visually recognizable level of speckle reduction is disclosed. The laser light source device includes: a laser module including a light...
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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...
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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...
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7995871 |
Stress-induced bandgap-shifted semiconductor photoelectrolytic/photocatalytic/photovoltaic surface and method for making same
Titania is a semiconductor and photocatalyst that is also chemically inert. With its bandgap of 3.0, to activate the photocatalytic property of titania requires light of about 390 nm wavelength,...
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7983573 |
Optical receiver having FSR phase compensation
An optical receiver apparatus and methods for mitigating intersymbol interference (ISI) in a differentially-encoded modulation transmission system by controlling constructive and destructive...
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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...
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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...
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7961988 |
Rapidly tunable wavelength selective ring resonator
A system and method are disclosed for a rapidly tunable wavelength selective ring resonator. An embodiment of a voltage-tunable wavelength selective ring resonator includes a ring-shaped waveguide...
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7957619 |
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...
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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...
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7949210 |
Silicon-compatible surface plasmon optical elements
This invention provides fundamental science and novel device architectures for surface plasmon (SP)-based, complementary metal oxide semiconductor (CMOS)-compatible, optical elements such as...
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7949260 |
Evaluation and adjustment method of optical receiver and optical communication system
An evaluation method of an optical receiver of an optical communication system, including a DPSK (Differential Phase Shift Keying) signal modulated by a specific data series, a delay interferometer...
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7945130 |
Mode scrambling apparatus for multimode fiber
Apparatus and methods for scrambling optical modes in multimode fibers to achieve uniform light distribution in guided multi-mode light for various applications.
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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...
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7933475 |
Method and apparatus for providing back-lighting in a display device
Methods and apparatus for providing lighting in a display are provided. In one embodiment, a microelectromechanical system (MEMS) is provided that includes a transparent substrate and a plurality...
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7929812 |
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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7925123 |
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...
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7925122 |
Slot waveguide for color display
A slot waveguide utilized as a color-selecting element. The slot waveguide includes a first layer of plasmon supporting material, the first layer being optically opaque and having an input slit...
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7916980 |
Interconnect structure for MEMS device
An interferometric modulator array is formed with connectors and/or an encapsulation layer with electrical connections. The encapsulation layer hermetically seals the array. Circuitry may also be...
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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...
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7916982 |
All fiber magneto-optic on-off switch for networking applications
An integrated fiber optic switch based on the magneto-optic effect of magnetic materials suitable for optical fiber networks is presented. The switch is based on the Faraday Effect exhibited by...
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7912325 |
Optical control element
There is provided an optical control element in which non-guided light is prevented from entering into an optical waveguide and which is excellent in optical properties, such as optical modulation...
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7905666 |
Optical module and method of manufacturing the same
An optical module includes a first silicon substrate having a first groove at its surface, a second silicon substrate having a second groove at its surface, a Laser device formed on the first...
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7899277 |
Integrated on-chip inductors and capacitors for improved performance of an optical modulator
An optical modulator for fiberoptic telecommunications is disclosed in which the optical signal velocity in the modulator waveguide and the electrical signal velocity in the traveling wave signal...
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