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US20130170782 MACH-ZEHNDER INTERFEROMETER HAVING BENDED WAVEGUIDES  
Consistent with the present disclosure, both arms of an MZ interferometer are “double-folded” and are bent in at least two locations to define first and second acute inner angles. Accordingly, the...
US20110007995 MACH ZEHNDER MODULATOR  
A Mach Zehnder (MZ) modulator (1) includes a splitter (4) for splitting incident light in one wave guide (3) into two modulator arms (5,6) of the MZ and a combiner (7) that combines light from the...
US20140147073 ELECTRO-OPTIC MODULATOR  
An electro-optic modulator includes a substrate and a Y-shaped waveguide. The substrate has a top surface. The Y-shaped waveguide is formed in the top surface and includes a non-modulated branch...
US20150205181 OPTICAL WAVEGUIDE DEVICE  
An optical waveguide device in which optical characteristics are less degraded even when a branch angle in a Y branch portion of an optical waveguide is great is provided. In an optical waveguide...
US20120321241 INTERFEROMETER-BASED OPTICAL SWITCHING  
Systems and methods according to these exemplary embodiments provide for optical interconnection using optical splitters and interferometer-based optical switching. Optical signals can be routed...
US20140314365 ELECTRO-OPTIC MODULATOR  
Electro-optic modulator includes a substrate, a waveguide formed in a top surface of the substrate, a pair of first modulating electrodes and a pair of second modulating electrodes. The waveguide...
US20150078702 System and Method for an Optical Phase Shifter  
In one embodiment, an optical phase shifter includes a first waveguide phase shifter and a second waveguide phase shifter. The optical phase shifter also includes a first polarization rotator...
US20140334765 ELECTRO-OPTIC MODULATOR  
Electro-optic modulator includes a substrate, a waveguide formed in a top surface of the substrate, first modulating electrodes and second modulating electrodes. The waveguide includes a Y-shaped...
US20130044974 ENDLESS PHASE SHIFTING  
Endless phase shifting apparatus, structures, and methods useful—for example—in MIMO optical demultiplexing
US20090220235 THREE-ARM DQPSK MODULATOR  
A modulator is disclosed that includes three arms between a splitter portion and a coupler portion. The modulator typically requires at most a π/2 phase shift between constellation points....
US20140355924 OPTICAL MODULATOR  
An optical modulator includes: a substrate that has electrooptical effect and has a Mach-Zehnder modulator that has a 2×2 coupler acting as a splitter, two intermediate waveguides coupled to...
US20100079848 SPECKLE REDUCTION IN DISPLAY SYSTEMS THAT EMPLOY COHERENT LIGHT SOURCES  
Speckle effect in display system is reduced by utilizing the instability of phase-coherent light and the transmission of the instable phase-coherent light through a multi-mode optical fiber with a...
US20130343693 ALTERNATING TRAVELING-WAVE MACH-ZEHNDER MODULATOR  
Disclosed herein is a traveling-wave Mach-Zehnder modulator and method of operating same that advantageously exhibits a reduced optical insertion loss as compared with contemporary Mach-Zehnder...
US20110194802 MACH-ZEHNDER MODULATOR  
A mach-zehnder optical modulator includes a substrate having electrooptical effect, wherein: the substrate has an inputting waveguide portion, two intermediate waveguide portions, an outputting...
US20140321791 ELECTRO-OPTIC MODULATOR HAVING HIGH EXTINCTION RATIO WHEN FUNCTIONING AS SWITCH  
An electro-optic modulator includes a substrate, a Y-shaped waveguide, and electrodes. The waveguide is formed in the substrate with diverging and reconverging portions. The electrodes are formed...
US20130343694 OPTICAL GATE SWITCH  
An object of the present invention is to realize an optical gate switch of a monolithic integration type which can avoid problems of losses caused by light coupling of a phase modulation unit to a...
US20150198859 SIMPLIFIED EXTINCTION RATIO CONTROL FOR MULTIPLE MACH-ZEHNDER INTERFEROMETER MODULATORS  
Disclosed herein are methods, structures, apparatus and devices that improve the control and/or controllability of a group of Mach-Zehnder Interferometer modulators. Advantageously, such control...
US20140153934 OPTICAL MODULATOR AND OPTICAL TRANSMITTER  
An optical modulator includes a Mach-Zehnder optical waveguide that includes a pair of parallel waveguides, and a two-input-one-output optical coupler that couples light output from the parallel...
US20090323164 OPTICAL MODULATION DEVICE AND OPTICAL SEMICONDUCTOR DEVICE  
An optical modulation device includes: an optical splitter for splitting input light into a first input beam and a second input beam; an optical intensity modulator for modulating the intensity of...
US20130148920 OPTICAL PHASE MODULATOR  
An optical phase modulator having a reduced time drift of an electro-optical response is disclosed. An optical waveguide exhibiting the electro-optic effect includes two serially coupled portions...
US20110135243 ELECTRO-OPTIC DEVICE  
Provided is an electro-optic device. The electro-optic device includes an input Y-branch comprising a first input branch and a second input branch, an output Y-branch comprising a first output...
US20140254974 OPTICAL MODULATOR  
A Mach-Zehnder optical modulator includes a join-and-branch portion; two light wave guides connected with the join-and-branch portion; an output light waveguide connected with the join-and-branch...
US20150261058 OPTICAL SOURCE  
An integrated optical device and method for generating photons by manipulating path entanglement is provided. An integrated optical splitter splits pump light between two interferometer arms...
US20130077151 POLARIZATION SCRAMBLING BASED ON CASCADED OPTICAL POLARIZATION DEVICES HAVING MODULATED OPTICAL RETARDATION  
Techniques and devices use cascaded optical polarization devices having modulated optical retardation to control optical polarization of light and can be configured for polarization scrambling....
US20130322809 OPTICAL MODULATOR  
An optical modulator that supports a plurality of modulation formats is provided. The optical modulator includes: a distribution part including an optical demultiplexing/variable-branching...
US20080111735 MILLIMETER AND SUB-MILLIMETER WAVE PORTAL  
In accordance with one embodiment of the present invention, a millimeter or sub-millimeter wave portal system is provided. Generally, the portal system comprises an electrooptic source and one or...
US20120314277 OPTICAL MODULATOR AND OPTICAL MODULATION METHOD  
An optical modulator includes first and second modulation waveguides, a demultiplexer, first and second phase adjustment waveguides that changes phases of a light of the first and second...
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...
US20130308893 INTEGRATED DRIVER AND RELATED METHOD  
A driver circuit may include a first node (VA), and a first circuit to generate on the first node (VA) an inverted replica of an input signal (VIN) during driver switching between a first supply...
US20140169722 ELECTRO-OPTIC MODULATOR  
An electro-optic modulator includes a substrate including a top surface, a Y-shaped waveguide embedded into the top surface and including a first branch dedicated for transmitting transverse...
US20080159680 Multi-Semiconductor Slab Electro-Optic Modulator and Process for Using the Same  
In one embodiment, the apparatus includes a substrate having a surface and an optical waveguide having a ridge-shaped semiconductor optical core, the ridge-shaped semiconductor optical core being...
US20130195394 OPTICAL MODULATOR  
The optical modulator includes optical modulation units. The plurality of optical modulation units is disposed in parallel on the same substrate. One input waveguide branches off to be connected...
US20140341497 ULTRA-RESPONSIVE PHASE SHIFTERS FOR DEPLETION MODE SILICON MODULATORS  
A novel phase shifter design for carrier depletion based silicon modulators, based on an experimentally validated model, is described. It is believed that the heretofore neglected effect of...
US20140079351 MILLIMETER-WAVE ELECTRO-OPTIC MODULATOR  
A lithium niobate-based electro-optic modulator may include a ridged optical waveguide structure and/or a thinned substrate.
US20150110438 TREATMENT AND/OR STABILIZING GASES IN AN OPTICAL GYRO BASED ON AN INORGANIC WAVEGUIDE  
A system is provided, the system including at least one integrated optical circuit (IOC) formed from at least one material, and a support-structure configured to support the at least one IOC to...
US20130113641 OPTICAL INTENSITY-TO-PHASE CONVERTER, MACH-ZEHNDER INTERFEROMETER, OPTICAL A/D CONVERTER, AND METHOD OF CONSTRUCTING OPTICAL INTENSITY-TO-PHASE CONVERTER  
An optical intensity-to-phase converter according to the present invention includes first and second waveguides to which a first input light is input, a third waveguide to which a second input...
US20150070709 ELECTRO-OPTIC MODULATOR AND ELECTRO-OPTIC DISTANCE-MEASURING DEVICE  
An electro-optic modulator includes a waveguide of a nonlinear optical material and an electrode line for generating an electrical field in a modulating region of the waveguide when a voltage is...
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...
US20140300695 Full-Parallax Acousto-Optic/Electro-Optic Holographic Video Display  
A full-parallax acousto-optic/electro-optic holographic video display includes a control layer and a piezo-electric layer, which includes a substrate and an array of anisotropic waveguide...
US20140321793 ELECTRO-OPTIC MODULATOR  
An electro-optic modulator includes a substrate having a polarization inversion region whose polarization is inverted, and a waveguide embedded in the substrate and including a first branch and a...
US20140112611 ROBUST MODULATOR CIRCUITS USING LATERAL DOPING JUNCTIONS  
Disclosed herein are methods, structures, and devices that compensates for modulator loss and modulation inefficiencies introduced by mask misalignments in opposite oriented pn type junction...
US20130287332 LOW POWER ELECTRO-OPTIC MODULATOR  
An electro-optic modulator includes a substrate comprising a first surface, a pair of transmission lines formed in the first surface and extending substantially in parallel with each other, and a...
US20140321790 ELECTRO-OPTICAL MODULATOR HAVING HIGH EXTINCTION RATIO WHEN FUNCTIONING AS SWITCH  
An electro-optic modulator includes a substrate, an end-to-end Y-shaped waveguide for optical divergence and convergence, and electrodes. The waveguide is formed in the substrate and the...
US20140321792 ELECTRO-OPTICAL MODULATOR HAVING HIGH EXTINCTION RATIO WHEN FUNCTIONING AS SWITCH  
An electro-optic modulator includes a substrate, an end-to-end Y-shaped waveguide for optical divergence and convergence, and electrodes. The waveguide is formed in the substrate and the...
US20110194803 OPTICAL MODULATOR FORMED ON BULK-SILICON SUBSTRATE  
An optical modulator comprises a bulk-silicon substrate comprising a trench having a predetermined width and a predetermined depth. A bottom cladding layer is formed in the trench, and a plurality...
US20120269478 LIQUID CRYSTAL WAVEGUIDE FOR DYNAMICALLY CONTROLLING POLARIZED LIGHT  
Waveguide and associated methods for controlling an optical phase delay (OPD) of TE polarized light traveling along a propagation direction through a waveguide are disclosed. In one example, the...
US20150063742 METHOD FOR MODULATING A CARRIER LIGHT WAVE  
Method for modulating a carrier light wave with symbols, led through a modulating interferometer, the total path phase shift being the sum of a respective first, second, third or fourth static...
US20130142472 OPTICAL TRANSMITTER AND OPTICAL TRANSMISSION METHOD  
An optical transmitter includes a first Mach-Zehnder, second Mach-Zehnders, a plurality of electrodes and a shift circuit. The first Mach-Zehnder is formed in an LN substrate. The second...
US20140241658 Electro-Optic Silicon Modulator With Longitudinally Nonuniform Modulation  
A device, such as a silicon modulator, in accordance with the present disclosure employs PN diodes without sacrificing the modulation depth, while achieving lower loss and better impedance...
US20110103735 MACH-ZEHNDER WAVEGUIDE TYPE OPTICAL MODULATOR  
It is intended to suppress the influence of a photorefractive phenomenon or the coupling of stray light to signal light. A Mach-Zehnder waveguide type optical modulator is provided which includes...

Matches 1 - 50 out of 372 1 2 3 4 5 6 7 8 >