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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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8180184 |
Absorption modulator and manufacturing method thereof
An absorption modulator is provided. The absorption modulator includes a substrate, an insulation layer disposed on the substrate, and a waveguide having a P-I-N diode structure on the insulation...
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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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8170381 |
Optical modulator
In an optical modulator comprising substrate 1 having electro-optical effect, two optical waveguides 3a, 3b formed in the substrate, buffer layer 2 formed on the substrate, traveling-wave electrode...
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8160404 |
High speed and low loss GeSi/Si electro-absorption light modulator and method of fabrication using selective growth
An optoelectronic device includes an input waveguide structure that receives an input optical signal. A GeSi/Si waveguide structure receives from the input waveguide the input optical signal and...
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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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8139903 |
Driving circuit of optical gate switch
A driving circuit of a semiconductor optical amplifier type gate switch constituting a matrix optical switch is provided with an operation amplifier into which a driving signal is input and from...
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8135243 |
Transparent conducting components and related electro-optic modulator devices
New electro-optic (EO) phase modulator devices and geometries, as can be constructed using a transparent conductive component.
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8135241 |
Optical modulation device utilizing electro-optic effect
An optical modulation device includes: a crystal substrate having an electro-optic effect; an optical waveguide formed in the crystal substrate; an electrode formed on the crystal substrate, to...
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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...
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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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8111994 |
Balanced bypass circulators and folded universally-balanced interferometers
The invention generally relates, in one aspect, to an interferometer system. The interferometer system includes a splitter/combiner element (SCE), a first bi-directional optical path, and a second...
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8103136 |
Thermo-optic devices providing thermal recirculation
Thermo-optical devices providing heater recirculation in an integrated optical device are described. The thermo-optical devices include at least one waveguide having a non-linear path length in...
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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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8098971 |
Method and apparatus for electromagnetic resonance using negative index material
An electromagnetic resonance device includes an input reflector, an output reflector, and a periodic dielectric medium (PDM) disposed between the input reflector and the output reflector. The input...
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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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8081850 |
Device with tunable plasmon resonance
A device includes a resonator capable of supporting a plasmon mode, a gain structure arranged to couple energy into the resonator, and a memristive layer arranged to provide an interaction with the...
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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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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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8068703 |
Optical modulator
An optical modulator is provided which suppresses a radiation mode of a microwave generated in a connection substrate or a termination substrate from entering a signal electrode of the optical...
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8059922 |
Methods of manipulating optical energy within a waveguide
A micro-ring configured to selectively detect or modulate optical energy includes at least one annular optical cavity; at least two electrodes disposed about the optical cavity configured to...
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8041158 |
Multithickness layered electronic-photonic devices
An apparatus comprising an electronic-photonic device. The device includes a planar substrate having a top layer on a middle layer, active electronic components and active photonic waveguide...
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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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8031986 |
Optical control device
The optical device includes a substrate having an electrooptic effect; a plurality of optical waveguides formed in the substrate in parallel to one another; and a polarization inversion region...
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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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8031987 |
Optical modulator
An optical modulator suppresses a radiation mode of a microwave generated in a connection substrate or termination substrate from entering a signal electrode of the optical modulator and suppresses...
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8031985 |
Optical XOR logic gate
An all-optical XOR logic gate. In one embodiment, a single photon absorption medium is used to provide enhanced optical response of a gate to an applied optical signal. The apparatus described uses...
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8027587 |
Integrated optic vector-matrix multiplier
A vector-matrix multiplier is disclosed which uses N different wavelengths of light that are modulated with amplitudes representing elements of an N×1 vector and combined to form an input ...
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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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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...
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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...
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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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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...
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8014639 |
Optical NOR gate
An optical NOR gate is formed from two pair of optical waveguide devices on a substrate, with each pair of the optical waveguide devices consisting of an electroabsorption modulator electrically...
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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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8005322 |
Polarization-independent optical isolator
It is provided a polarization-independent optical isolator without depending on the polarized wave of the light being input to the waveguide-type optical isolator, in particular, it is able to...
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7995872 |
Optical modulator component and optical modulator
An optical modulator component 2 has a substrate 4 for modulation made of an electro-optical material and having a joining face 4b; an optical waveguide 6 provided in or on the substrate 4 and...
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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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7978953 |
Methods for visually inspecting interferometric modulators for defects
A method is provided for visual inspection of an array of interferometric modulators in various driven states. This method may include driving multiple columns or rows of interferometric modulators...
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7974501 |
Optical modulators
An optical modulator 24 has a supporting substrate 5, a modulating substrate 11 made of an electro-optical material, an optical waveguide 12 provided on the side of a first main surface 30 of the...
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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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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...
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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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7961995 |
Electrically tunable plasmon light tunneling junction
An electrically modulated plasmonic junction generates surface plasmons from an electrical signal from an electrical source, with the tunnel junction having a contact with a tapered end forming the...
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7961996 |
Coupling device for use in optical waveguides
An optical waveguide device comprises a plurality of mirrors, wherein at least one mirror comprises a first and second reflective end that reflect and transmit light. The plurality of mirrors...
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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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