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Class Information
Number: 359/325
Name: Optical: systems and elements > Optical demodulator
Description: Subject matter wherein an original modulating wave is recovered from a previously modulated light wave.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8659820 Spectral sensing demodulator Feb. 25, 2014
8599472 Quasicrystalline structures and uses thereof Dec. 3, 2013
8576206 Phase modulating apparatus and phase modulating method Nov. 5, 2013
8569675 Optical analog PPM demodulator Oct. 29, 2013
8565614 Spectrally efficient digital data transmission utilizing phase encoded MMW Oct. 22, 2013
8526102 PLC-type demodulator and optical transmission system Sep. 3, 2013
8520306 Apparatus for combining laser radiation Aug. 27, 2013
8508838 Quasicrystalline structures and uses thereof Aug. 13, 2013
8477409 PLC-type delay demodulation circuit and PLC-type optical interferometer Jul. 2, 2013
8467121 Optical signal processing Jun. 18, 2013
8441717 PLC-type delay demodulation circuit May. 14, 2013
8433204 DQPSK demodulator Apr. 30, 2013
8422118 PLC-type delay demodulation circuit Apr. 16, 2013
8411351 Optical differential phase-shift keyed signal demodulator Apr. 2, 2013
8411350 Optical demodulator Apr. 2, 2013
8401351 90-degree hybrid Mar. 19, 2013
8379295 Optical differential phase-shift keyed signal demodulator Feb. 19, 2013
8373921 Methods and systems for modulating and demodulating millimeter-wave signals Feb. 12, 2013
8294980 Delay line interferometer with liquid crystal tuning element Oct. 23, 2012
8280054 Scrambling and descrambling systems for secure communication Oct. 2, 2012
8270067 Sagnac delay-line interferometer for DPSK demodulation Sep. 18, 2012
8270850 Demodulator and receiving device Sep. 18, 2012
8264764 Multiple-FSR DPSK demodulator Sep. 11, 2012
8243362 Quasicrystalline structures and uses thereof Aug. 14, 2012
8218975 Free-space DQPSK demodulator Jul. 10, 2012
8208816 Method and apparatus for dispersion mitigation in optical links Jun. 26, 2012
8174756 Rhomb beam splitter in optical communication May. 8, 2012
8164824 Demodulator Apr. 24, 2012
8126337 Balanced phase-shaped binary transmission in optical communications Feb. 28, 2012
8111450 Rhomb beam splitter in optical communication Feb. 7, 2012
8068273 Demodulator Nov. 29, 2011
8064127 Quasicrystalline structures and uses thereof Nov. 22, 2011
8023833 Optical receivers with controllable transfer function bandwidth and gain imbalance Sep. 20, 2011
8004750 Multiple-FSR DPSK demodulator Aug. 23, 2011
8004749 Pseudo common-path DPSK demodulator Aug. 23, 2011
7983573 Optical receiver having FSR phase compensation Jul. 19, 2011
7978401 Delay demodulation devices Jul. 12, 2011
7961991 Delay demodulation devices Jun. 14, 2011
7884996 Delay-line demodulator Feb. 8, 2011
7848662 Delay interferometer and demodulator Dec. 7, 2010
7844189 Phase controllable optical delay interferometer, optical differential phase shift keying demodulator using the same, and demodulating method therefor Nov. 30, 2010
7843627 Coherent demodulation with reduced latency adapted for use in scanning probe microscopes Nov. 30, 2010
7843618 Method for controlling image-forming apparatus Nov. 30, 2010
7813032 Methods to control phase shifts of delay demodulation devices Oct. 12, 2010
7649677 Multi-ridged subwavelength aperture for optical transmission and thermally assisted magnetic recording Jan. 19, 2010
7649678 Delay-line demodulator Jan. 19, 2010
7626754 Light steering using an array of tunable phase delay elements Dec. 1, 2009
7606504 Optical receiver and optical receiving method corresponding to differential M-phase shift keying system Oct. 20, 2009
7580640 Method and apparatus for extracting optical clock signal Aug. 25, 2009
7526210 Optical demodulating apparatus and method Apr. 28, 2009

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