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US20110305412 OPTICAL WAVEGUIDE, OPTICAL MODULATOR AND OPTICAL COUPLER  
An optical waveguide formed in a substrate including: a curved waveguide; and a splitter that is coupled to the curved waveguide and branches, wherein a low refraction index portion having an...
US20150086149 TUNABLE SILICON GRATING COUPLERS  
A photonic integrated circuit (PIC) is described. This PIC includes a grating coupler for surface-normal coupling that has an alternating pattern of grating teeth and grating trenches, where the...
US20110058764 ELECTRO-OPTIC MODULATING DEVICE  
Provided is an electro-optic modulating device. The electro-optic modulating device includes an optical waveguide with a vertical structure and sidewalls of the vertical structure are used to...
US20100296768 RING RESONATOR WITH INDUCTANCE COUPLED HEAT TUNING  
A ring resonator has a first optical waveguide arranged in a loop, a second optical waveguide tangentially connected to the first optical waveguide, and an electrical coil inductively coupled to...
US20140153858 ELECTRO-OPTIC MODULATOR  
An electro-optic modulator includes a substrate, a Y-shaped waveguide, a pair of first electrodes, and a pair of second electrodes. The substrate includes a top surface. The Y-shaped waveguide is...
US20130034322 OPTICAL WAVEGUIDE AND SEMIFINISHED PRODUCT FOR THE PRODUCTION OF AN OPTICAL WAVEGUIDE HAVING OPTIMIZED DIFFRACTION PROPERTIES  
The invention relates to an optical waveguide and a semifinished product for producing an optical waveguide having optimized diffraction properties, comprising a trench structure that has a...
US20120251030 DEVICE FOR COUPLING AN ELECTROMAGNETIC WAVE BETWEEN A WAVEGUIDE AND A SLIT METAL GUIDE, METHOD FOR MANUFACTURING SUCH A DEVICE, AND OPTICAL AND ELECTRIC COUPLER FOR AN OBJECT USING THE OPTICAL COUPLING DEVICE  
The device for coupling an electromagnetic wave includes a waveguide and a slit metal guide. The slit metal guide is formed by two metal elements which are coplanar and spaced out from one another...
US20150030280 MAGNETIC-FREE NON-RECIPROCAL DEVICES EXHIBITING NON-RECIPROCITY THROUGH ANGULAR MOMENTUM BIASING  
A non-reciprocal device incorporating metamaterials which exhibit non-reciprocity through angular momentum biasing. The metamaterial, such as a ring resonator, is angular-momentum biased. This is...
US20140050436 PHOTONIC MODULATOR WITH FORWARD-AND REVERSE-BIASED DIODES FOR SEPARATE TUNING AND MODULATING ELEMENTS  
A method and structure for a modulator which includes a forward-biased diode optimized for power and area to perform a tuning function, and a reverse-biased diode optimized for speed to perform a...
US20120251029 OPTICAL WAVEGUIDE STRUCTURE  
Embodiments of the invention describe a multi-segment optical waveguide that enables an optical modulator to be low-power and athermal by decreasing the device length needed for a given waveguide...
US20130004115 OPTICAL WAVEGUIDE CIRCUIT AND METHOD OF MANUFACTURING THE SAME, AND OPTICAL WAVEGUIDE CIRCUIT APPARATUS  
An optical waveguide circuit includes: an optical interferometer including an optical waveguide; and a heating unit that is disposed along at least a part of the optical waveguide included in the...
US20120002971 POLARIZATION-TRACKING DEVICE HAVING A WAVEGUIDE-GRATING COUPLER  
A polarization-tracking device having a waveguide grating that serves as a polarization splitter and an optical fiber-to-waveguide coupler. The polarization-tracking device also has an optical...
US20110158574 OPTICAL HYBRID CIRCUIT, OPTICAL RECEIVER, AND OPTICAL RECEIVING METHOD  
An optical hybrid circuit includes a multimode interference coupler; a first 2:2 optical coupler; a second 2:2 optical coupler; a third 2:2 optical coupler; and a phase controlling region. The...
US20110002573 OPTICAL ISOLATION CREATED BY INDIRECT INTERBAND PHOTONIC TRANSITIONS  
The refractive index of the at least one photonic structure having two separate photonic bands is modulated, so that light supplied to the at least one photonic structure and initially in one of...
US20150110437 CONTROLLING BIAS VOLTAGES FOR OPTICAL MODULATORS  
Methods and apparatus for controlling a bias voltage (20) supplied to an optical modulator that comprises a biasable component configurable to be biased by application of the bias voltage (20),...
US20140307995 Organic Electro-Optic Modulators with Transparent Conducting Electrodes and Related Device Structures  
Electro-optic (EO) modulator and related device structures which can be used in conjunction with high EO materials to lower switching voltage and improve related performance parameters.
US20090129719 Free-Space Integrated Photodetector With Reduced Phase Tracking Error  
A Mach-Zehnder (MZ) interferometer modulator structure for fiberoptic telecommunications is disclosed in which drift of the operating point can be monitored with a reduced phase tracking error....
US20050196092 Optical modulator and communications system  
An optical modulator according to the present invention includes an optical waveguide 2a to 2d made of a material with an electro-optic effect and a modulating electrode 3 for applying a...
US20100046878 LITHIUM NIOBATE MODULATOR HAVING A DOPED SEMICONDUCTOR STRUCTURE FOR THE MITIGATION OF DC BIAS DRIFT  
There is provided in one of the embodiments of the disclosure a lithium niobate modulator structure for mitigating DC bias drift comprising a highly doped semiconductor layer patterned above an...
US20140355923 ELECTRO-OPTIC MODULATOR HAVING RIDGE WAVEGUIDE STRUCTURE  
A ridge waveguide structure includes a substrate having a top surface; a ridge structure protruding from the top surface; and a waveguide formed in the ridge structure and a shape of the waveguide...
US20110164844 OPTICAL MODULATOR  
It's an object of the invention to provide an optical modulator with high performance. The optical modulator 1 includes a substrate 4 having an electro-optical effect, an optical waveguide 5...
US20130308892 LOW POWER ELECTRO-OPTIC MODULATOR  
An electro-optic modulator includes a substrate comprising a surface, a pair of transmission lines formed in the surface and extending substantially in parallel with each other, a pair of first...
US20150110436 CONTROLLING BIAS VOLTAGES FOR OPTICAL MODULATORS  
Methods and apparatus for controlling a bias voltage supplied to an optical modulator, the modulator comprising a biasable component, the biasable component being configurable to be biased by...
US20130114922 FLEXIBLE OPTICAL DEVICE  
A flexible and optionally highly elastic waveguide capable of propagating and emitting light is disclosed. The flexible waveguide comprises a flexible material having a surface and an end, wherein...
US20120138568 LOW-COST PASSIVE OPTICAL WAVEGUIDE USING SI SUBSTRATE  
A passive optical waveguide is solely built on a Si substrate while still maintaining high optical quality. Two side-by-side diamond shaped cavities may be etched into the Si wafer and oxide grown...
US20130011093 OPTICAL MODULATOR  
Disclosed is an optical modulator which substantially lowers loss and has little attenuation in the intensity of an optical signal after modulation. The optical modulator includes a 1×2 RZ pulse...
US20100310205 Hybrid Coupling Structure of the short Range Plasmon Polariton and Conventional Dielectric Waveguide, A Coupling Structure of the Long Range Plasmon Polariton and Conventional Dielectric Waveguide, and Applications Thereof  
The present invention provides a hybrid coupling structure of a short range surface plasmon polariton and a conventional dielectric waveguide, including a dielectric substrate layer, a dielectric...
US20150234252 OPTICAL MODULATOR  
An optical modulator includes a first coupler that branches an input light into two and outputs a first output light and a second output light; a first Mach-Zehnder interferometer (MZI) that...
US20130243363 OPTICAL MODULATOR  
An optical modulator includes a first coupler that branches an input light into two and outputs a first output light and a second output light; a first Mach-Zehnder interferometer (MZI) that...
US20130121631 DUAL POLARIZATION QUADRATURE MODULATOR  
A dual polarization quadrature modulator includes an input planar lightwave circuit (PLC) configured to deliver coherent light to a polymer-on substrate device including a plurality of...
US20120207425 Optical Waveguide Device  
Disclosed is an optical waveguide element wherein a plurality of Mach-Zehnder waveguides to be used for DQPSK modulation and the like are integrated on a thin substrate and the on/off extinction...
US20100329600 Optical waveguide device  
In an optical waveguide device, in a cross direction intersecting an extension direction of waveguide sections, one or more bridge portions of a ground electrode closer to a center of stress...
US20140126854 OPTICAL WAVEGUIDE WITH CASCADED MODULATOR CIRCUITS  
An optical waveguide for transmitting an optical signal input to the optical waveguide with a first frequency. The optical waveguide includes a plurality of modulator circuits configured along an...
US20130064492 OPTICAL WAVEGUIDE DEVICE  
An optical waveguide device having a Mach-Zehnder type waveguide formed on a substrate is provided in which a slope of two waveguides input to an optical coupler on an output side of the...
US20090279825 OPTICAL FSK/SSB MODULATOR HAVING INTENSITY BALANCE FUNCTION  
It is an object of the present invention to provide an optical modulator which is capable of adjusting optical intensity of optical signals which contains non-desired components so that the...
US20130343692 LOW POWER ELECTRO-OPTIC MODULATOR  
An electro-optic modulator includes a substrate, a pair of transmission lines, a first strip-shaped electrode, and a pair of second strip-shaped electrodes. The substrate includes a surface and a...
US20070116398 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...
US20110170819 ELECTRO-OPTIC MODULATOR WITH INVERSE TAPERED WAVEGUIDES  
An integrated circuit that includes an optical waveguide to convey an optical signal via an optical mode in an on-chip optical waveguide is described. In this integrated circuit, a cross-sectional...
US20120207424 OPTICAL MODULATOR WITH THREE-DIMENSIONAL WAVEGUIDE TAPERS  
An integrated circuit that includes an optical waveguide defined in a semiconductor layer is described. In this integrated circuit, light is coupled between the optical waveguide and an optical...
US20090123108 SINGLE PHOTON ABSORPTION ALL-OPTICAL MODULATOR IN SILICON  
A single-photon absorption all-optical modulator, systems employing the same, and methods of making and using the same. An illustrative example is provided based on silicon semiconductor...
US20110142391 Ring resonator with wavelength selectivity  
The ring resonator includes waveguides configured to guide light signals. The waveguides include an input waveguide and one or more loop waveguides. One of the loop waveguides is a primary loop...
US20140016894 SUPPRESSION OF RESONANT POLARIZATION CONVERSION IN PHOTONIC INTEGRATED CIRCUITS  
A device may include a number of optical waveguides, each of which being spaced from one another. The optical waveguides may each include at least one curved section and widths of the curved...
US20080101743 MWS DRIFT FEEDBACK COMPENSATOR USING VOA AND INPUT POWER DITHERING  
The invention relates to a compensator of attenuation drift in an optical multi-wavelength switch (MWS) which uses input signal amplitude dither and external VOA dither cancellation to determine...
US20150117808 GRATING BASED OPTICAL COUPLER  
An apparatus including a waveguide region configured to guide light propagating along a first direction; a reflector region configured to reflect incident light; an interference region formed...
US20100040321 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...
US20120183252 OPTICAL WAVEGUIDE DEVICE  
Provided is a small optical waveguide device with little reflected light, the optical waveguide device including: an optical waveguide element of which a first output waveguide is inclined with...
US20150132015 OPTICAL RESONATOR APPARATUS, OPTICAL TRANSMITTER AND CONTROLLING METHOD FOR OPTICAL RESONATOR  
An optical resonator apparatus includes an optical resonator unit wherein ring optical resonators each including a first optical waveguide and a resonance wavelength adjustment electrode are...
US20060067602 Refractive index variable element and method of varying refractive index  
A refractive index variable element includes a structure including quantum dots having discrete energy levels and a dielectric matrix surrounding the quantum dots, and an electron injector...
US20110170879 FREQUENCY UP-CONVERSION SYSTEM AND METHOD FOR THE SAME  
A frequency up-conversion system includes an optical splitter, an optical modulator, an optical phase-shifter, and an optical coupler. In one embodiment of the present disclosure, the optical...
US20140003761 ADVANCED MODULATION FORMATS USING OPTICAL MODULATORS  
A system, e.g. an optical modulator, includes an optical waveguide and a plurality of optical resonators. The optical waveguide is located along a surface of a planar substrate. The plurality of...

Matches 1 - 50 out of 417 1 2 3 4 5 6 7 8 9 >