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Class 385/9 - Coupling between waveguides


Subclass of Class 385 - Optical waveguides
Definition: Subject matter wherein coupling between juxtaposed optical
No. of patents: 283
Last issue date: 10/19/2010


1                
NumberTitleIssue Date
7817879Optical waveguide device
An optical waveguide device including a dielectric substrate and a folded waveguide formed on the substrate, including a first waveguide and a second waveguide, one part of the first waveguide being connected to one end of the second waveguide at a first coupling po...
10/19/2010
7657131Systems and methods for integrated optical circuitry for high data rate optical transmission and reception
Embodiments include systems and methods for integrated circuitry optical modulation. In one embodiment, an integrated circuit comprises an optical waveguide enabling multi-level modulation. The embodiment comprises an optical waveguide with integrated circuit modula...
02/02/2010
7450788Optical splitter/coupler and optical communication system
An optical splitter/coupler has: a multimode waveguide having an electrooptic effect, and propagating light in a multimode; one incident waveguide propagating light in a single mode, and inputting the light to the multimode waveguide; one pair of emitting waveguides...
11/11/2008
7447389Optical modulator
An optical modulator includes a signal electrode for application of modulation signals whereby light propagated over an optical waveguide is modulated, and bias electrodes for application of a bias voltage for controlling an operating point for the modulation signal...
11/04/2008
7440643Variable light controlling device and variable light controlling method
A variable light controlling device comprising a substrate, an optical waveguide disposed on the substrate, a first heater and a second heater to change the optical waveguide's temperature is fabricated. And a total amount of the power supplied to the first and the ...
10/21/2008
7434940Light coupling system and method
A light coupling system includes a waveguide, configured to receive light from at least two light sources and to internally reflect light therein; a diffraction grating, disposed upon the waveguide; and a switchable Bragg grating, disposed upon the waveguide. The di...
10/14/2008
7428348Electro-optical switching using coupled photonic crystal waveguides
An electro-optical switch implemented in coupled photonic crystal waveguides is disclosed. The switch is proposed and analyzed using both a finite-difference time-domain (“FDTD”) method and a plane wave expansion (“PWM) method. The switch may be implemented in...
09/23/2008
7426326Low loss bridge electrode with rounded corners for electro-optic modulators
An electro-optic modulator having a substrate, one or more optical waveguides, at least one active electrode formed on the substrate and aligned over the optical waveguide, the active electrode operating to induce a refractive index change in the optical waveguide. ...
09/16/2008
7400788Linearized optical modulator having a plurality of coupling functions
Invention discloses an apparatus that provides linear optical modulation of light carrier signals by an electrical modulation signal. Linearized modulation is achieved through the selection of a spacing profile between two optical transmission waveguides. The spacin...
07/15/2008
7394950Optical modulator
An optical modulator of the Mach-Zehnder type including electrodes disposed above a substrate having a pair of linear portions of an optical waveguide includes a signal electrode to which modulating signals are applied; first and second earth electrodes; and a bias ...
07/01/2008
7382942Optical waveguide devices
It is provided an optical waveguide device in which the radius of curvature of a curved part of an optical waveguide can be lowered and the radiation loss of light in the curved part can be reduced. An optical waveguide device 2 has a ferroelectric optical wa...
06/03/2008
7379672Photonic RF distribution system
The present photonic RF generation and distribution system provides a system and method for distributing an RF output signal. The photonic RF distribution system includes two optical sources for generating optical signals. A first optical source (42) is opera...
05/27/2008
7379629Optically coupled resonant pressure sensor
An optically coupled resonant pressure sensor includes a deformable diaphragm and an optically coupled resonator fixedly attached to the deformable diaphragm. The resonator includes a resonator body and a laterally offset photodiode adjacent to the resonator body. T...
05/27/2008
7369727Apparatus for coupling electromagnetic energy and method of making
An electromagnetic coupler comprising: a coupling waveguide adapted for receiving input modes along an input axis, propagating coupling modes along a coupling axis, and transmitting output modes along an output axis, the output axis being not parallel to the couplin...
05/06/2008
7366373Plasmon switch
A variety of structures, methods, systems, and configurations can support plasmons for logic. ...
04/29/2008
7359599Optical near-field generator and near-field optical recording and reproduction apparatus
Decrease in optical near-field intensity is prevented when an light propagating medium made of a high refractive index material, such as a waveguide or a lens, is combined with a scatterer for producing optical near-field. Near the optical near-field generating elem...
04/15/2008
7349603Optical arrangement with two optical inputs/outputs and production methods
Optical arrangement comprising two parallel plates each with a through-hole forming an optical input/output with a given optical axis and one at least partly optical component placed between the plates, the component and the first plate comprising first fastening st...
03/25/2008
7343055Low bias drift modulator with buffer layer
The invention relates to an electro-optic modulator structure containing an additional set of bias electrodes buried within the device for applying bias to set the operating point. Thus the RF electrodes used to modulate incoming optical signals can be operated with...
03/11/2008
7342467Variable power coupling device
An apparatus and method for providing adaptive control of the output of a radio frequency coupler. A plurality of input signals is provided to a multi-prong divider/combiner, the divider/combiner having a first and a second input terminals communicating a first and ...
03/11/2008
7343058Efficient light coupler from off-chip to on-chip waveguides
In an embodiment, light from a single mode light source may be deflected into a low index contrast (LIC) waveguide in an opto-electronic integrated circuit (OEIC) (or “opto-electronic chip”) by a 45 degree mirror. The mirror may be formed by polishing an edge of...
03/11/2008
7340142Integrated optoelectronic device and method of fabricating the same
An integrated optoelectronic device includes optical waveguide elements containing InGaAlAs as a principal component, formed on an InP substrate and connected in an end-to-end fashion by butt jointing. An InGaAsP layer is formed on the InP substrate to suppress the ...
03/04/2008
7340116Optical switch, optical modulator and wavelength variable filter
An optical switch, an optical modulator, and a wavelength variable filter each have a simple configuration, which requires only a low driving voltage, which is independent of polarization, and which can operate at high speed. An optical switch includes a 3-dB couple...
03/04/2008
7336854Optical switch, optical modulator and wavelength variable filter
An optical switch, an optical modulator, and a wavelength variable filter each have a simple configuration, which requires only a low driving voltage, which is independent of polarization, and which can operate at high speed. An optical switch includes a 3-dB couple...
02/26/2008
7336855Integration of a waveguide self-electrooptic effect device and a vertically coupled interconnect waveguide
A self-electrooptic effect device (“SEED”) is integrated with waveguide interconnects through the use of vertical directional couplers. Light initially propagating in the interconnect waveguide is vertically coupled to the active waveguide layer of the SEED and,...
02/26/2008
7333682Photoelectric composite interconnection assembly and electronics device using same
A photoelectric composite interconnection assembly having: a flexible substrate having an electric interconnection; and an electrical interface provided at both ends of the electric interconnection. A part of the electric interconnection is replaced by an optical tr...
02/19/2008
7315663Electronically controlled photonic crystal optical switch
Various embodiments of the present invention are directed to photonic crystal switches. In one embodiment, a photonic crystal switch a photonic crystal switch includes a photonic-crystal-based light transmission layer that outputs an incident light beam in a selecte...
01/01/2008
7315665Liquid-crystal planar-waveguide apparatus and method for fast control of polarization and other properties of light
A polarization controller includes a plurality of liquid crystal cells positioned as cladding on a waveguide that propagates a beam of light so that the evanescent field extends into the liquid crystal cells, and a ½-wave birefringent retarder for rotating the eige...
01/01/2008
7310454Photonic bandgap modulator, amplifier, demux, and TDM devices
An optical device includes at least two photonic bandgap crystal (PBG) stacks that are each comprised of alternating layers of high and low index materials. A defect region is formed in a cavity region between the at least two photonic bandgap crystal stacks so as t...
12/18/2007
7308161System and method for wavelength selective switching employing single-element gratings
A wavelength selective switch device is disclosed that includes an elongated signal communication path extending from a first end of the device to a second end of the device. The signal communication path extends through a plurality of regions of varying indices of ...
12/11/2007
7302141Y-branch-based thermo-optic digital optical switches and variable optical attenuators with non-uniform heating
The present invention is concerned with 1×2 thermo-optic digital optical switches known in the art as “Y-branch digital optical switches” and variable optical attenuators. ...
11/27/2007
7302140Optical switch and matrix optical switch
The invention provides an optical switch including a substrate which has conductivity or semiconductivity, an optical waveguide layer which is formed on the substrate, and a control electrode which is formed on the optical waveguide layer. The optical waveguide laye...
11/27/2007
7292740Apparatus and method for controlling transmission through a photonic band gap crystal
An apparatus (10) and method for dynamic frequency control of a photonic band gap crystal includes an acoustic band gap crystal (12) having a defect site (14), a photonic band gap crystal (20) in the defect site of the acoustic band gap c...
11/06/2007
7260286Optical fiber coupling having liquid crystal adaptive coupler
An optical fiber coupling, for example, an optical switch, for coupling a light source with a light-receiving end face of an optical waveguide comprises a lens for focusing a light beam emitted from the light source at a focal point on the light-receiving end face o...
08/21/2007
7260280Optical device
The present invention provides a highly-integrated and compact optical element and further provides an optical element having various functions such as lower driving voltage, chirping suppression and polarization-independency. The optical element has a substrate ...
08/21/2007
7251385Wavelength multiplexing on-chip optical interconnection circuit, electro-optical device, and electronic apparatus
To provide a wavelength multiplexing on-chip optical interconnection circuit, an electro-optical device, and an electronic apparatus, wherein a signal transmission speed can be enhanced, fineness can be easily accomplished, and they can be simply manufactured, the w...
07/31/2007
7248761Optical rotating data transmission device with coupling slide
A device for transmitting modulated optical signals between a first unit and a second unit, in which the first unit is supported to be rotatable or movable linearly relative to the second unit, comprises a light guide extending along a given track on the first unit,...
07/24/2007
7249257Digitally watermarked maps and signs and related navigational tools
Maps and signs are embedded with plural-bit data in the form of digital watermarks. In one embodiment, the plural-bit data includes location information with respect to a map. A handheld reading device extracts the location information from the map. The reading devi...
07/24/2007
7242821Enhanced performance mode converter
An optical mode converter comprising a slow wave electrode structure and including Schottky barriers for preventing an accumulation of free carriers in the optical waveguide region of the converter. The Schottky barriers are also used for suppressing higher order mo...
07/10/2007
7239779Broadband optical via
A broadband optical via provides a low loss interconnection between waveguides in two vertically adjacent planar waveguiding layers. Two waveguides, one in each planar layer, evanescently interact over an interaction length, and substantially all of the power on one...
07/03/2007
7236708Optical communication system with optical output level control function
An optical communication system can increase a minimum optical reception level or the number of connectable optical receivers by controlling optical output levels of its optical transmitter. The optical communication system includes the optical transmitter having an...
06/26/2007
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