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Class Information
Number: 398/202
Name: Optical communications > Receiver
Description: Subject matter under class d efinition including an optoelectronic circuit for converting a received modulated optical signal (e.g., light or laser) into a signal corresponding to the information transmitted.










Sub-classes under this class:

Class Number Class Name Patents
398/204 Heterodyne 264
398/203 Homodyne 116
398/212 Including optical element (e.g., lens, mirror, etc.) 355
398/214 Including optical waveguide 239
398/208 Including postcompensation 544


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Patent Number Title Of Patent Date Issued
7650083 Demodulating a signal by performing consecutive beam splitting Jan. 19, 2010
7646987 Open path laser/optical communication systems and methods utilizing wavelengths between atmospheric and gaseous absorption lines Jan. 12, 2010
7643755 Optical receiver comprising a receiver photodetector integrated with an imaging array Jan. 5, 2010
7643761 Method and apparatus for processing optical duobinary signals Jan. 5, 2010
7638351 Photodiode with fiber mode dispersion compensation Dec. 29, 2009
7635837 Optical receiving circuit Dec. 22, 2009
7634201 Wideband receiver based on photonics technology Dec. 15, 2009
7630650 Multi-level modulation receiving device Dec. 8, 2009
7630647 Hybrid IR transmission system Dec. 8, 2009
7623790 Signal identification method Nov. 24, 2009
7623796 Data-aided multi-symbol phase estimation for optical differential multilevel phase-shift keying signals Nov. 24, 2009
7623797 Compensating impairments of optical channel using adaptive equalization Nov. 24, 2009
7620330 Optical receiver device and method Nov. 17, 2009
7620331 Receiver circuit having an optical receiving device Nov. 17, 2009
7620332 Optical receiving unit reducing cross talk between optical transmitting unit and optical transmitting/receiving apparatus installing the same Nov. 17, 2009
7613402 Duobinary receiver Nov. 3, 2009
7609981 Deliberate signal degradation for optimizing receiver control loops Oct. 27, 2009
7609982 RZ-DPSK optical receiver circuit Oct. 27, 2009
7606487 Distortion measurement in optical communication systems Oct. 20, 2009
7606504 Optical receiver and optical receiving method corresponding to differential M-phase shift keying system Oct. 20, 2009
7603044 Polarization control for multichannel and polarization multiplexed optical transport networks Oct. 13, 2009
7603043 Light receiving element circuit and optical disk drive Oct. 13, 2009
7603042 Apparatus and method for optimum decision threshold setting Oct. 13, 2009
7602860 Method and system for decoding multilevel signals Oct. 13, 2009
7599627 Method and system for a polarization mode dispersion tolerant optical homodyne detection system with optimized transmission modulation Oct. 6, 2009
7599629 Optical receiver having an open loop automatic gain control circuit Oct. 6, 2009
7599631 Burst optical receiver with AC coupling and integrator feedback network Oct. 6, 2009
7596323 Optical communications systems, devices, and methods Sep. 29, 2009
7596322 Cryptographic-key-generation communication system Sep. 29, 2009
7593650 Optical receiver Sep. 22, 2009
7593649 Method and apparatus for wired infrared demodulation Sep. 22, 2009
7593647 Apparatuses and methods for automatic wavelength locking of an optical transmitter to the wavelength of an injected incoherent light signal Sep. 22, 2009
7590359 Optical communication node system, all-optical packet routing system, and all-optical packet routing method and all-optical packet routing network using the node and routing systems Sep. 15, 2009
7583904 Transimpedance (TIA) circuit usable for burst mode communications Sep. 1, 2009
7580642 Modulation scheme for tedons Aug. 25, 2009
7580643 Communications systems and methods Aug. 25, 2009
7577370 Method and apparatus for extracting optical clock signal Aug. 18, 2009
7573045 Plasmon wave propagation devices and methods Aug. 11, 2009
7570109 System and method for demodulating amplitude modulated signals Aug. 4, 2009
7567760 Method and apparatus for providing diagnostic features for an optical transceiver Jul. 28, 2009
7561805 Optical transmitter, optical receiver, optical communication system, and optical transmitter and receiver Jul. 14, 2009
7561812 Optical receiver with matched photodetector capacitance Jul. 14, 2009
7558489 Method and apparatus for monitoring the power level of two or more optical transmitters Jul. 7, 2009
7558490 Resonant detector for optical signals Jul. 7, 2009
7555228 Method and system for facilitating burst-mode optical power measurement Jun. 30, 2009
7555227 Polarization compensation in a coherent optical receiver Jun. 30, 2009
7555217 Multi wavelength electromagnetic device Jun. 30, 2009
7554083 Integration of electromagnetic detector on integrated chip Jun. 30, 2009
7548700 Receiving apparatus and method thereof Jun. 16, 2009
7542682 Millimeter wave transmitter using optical heterodyning Jun. 2, 2009

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