| Patents for G02F 2 - Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light (2,713) |
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| 09/19/1990 | EP0387870A2 Method for controlling polarizations of signal lights in an optical frequency division multiplex coherent communication system |
| 09/19/1990 | EP0228435B1 Optical communication system |
| 09/05/1990 | EP0385697A1 Apparatus for and method of generating a comb of optical teeth of different wavelengths |
| 09/04/1990 | US4955026 Frequency locking radiation beam |
| 09/03/1990 | WO1990010326A1 Apparatus for and method of generating a comb of optical teeth of different wavelengths |
| 08/22/1990 | EP0383390A1 Optical coherent receiver |
| 08/21/1990 | US4951287 Atomic vapor laser isotope separation process |
| 08/17/1990 | CA2010015A1 Optical coherent receiver |
| 08/14/1990 | CA1272792A1 Optical system |
| 08/14/1990 | CA1272791A1 Optical coupling assembly |
| 08/01/1990 | EP0380080A2 A reentrant traveling wave single sideband optical modulator |
| 07/24/1990 | US4943145 Display method and apparatus |
| 06/27/1990 | EP0374897A1 Single sideband waveguide modulator |
| 06/20/1990 | EP0374006A1 Optical frequency translator and modulator using such a device |
| 06/19/1990 | US4935918 Optic system useful with metal service lines |
| 06/13/1990 | EP0372907A2 Superfluorescent broadband fiber laser source |
| 05/29/1990 | US4929841 Dynamic infrared target |
| 05/22/1990 | US4927245 Frequency shifter for medium infrared range wave |
| 05/16/1990 | EP0368755A1 Device for detecting a coherent optical signal |
| 05/15/1990 | US4926429 Lightwave communication system having sources independently synchronized to an absolute frequency standard |
| 05/01/1990 | US4922481 Optical communication systems enabling minimal subscriber components |
| 04/25/1990 | EP0365028A2 A heterodyne receiver for coherent optical communication |
| 04/10/1990 | US4916705 Random-access digitally-tuned coherent optical receiver |
| 04/04/1990 | EP0361661A1 Dynamic infrared target |
| 04/04/1990 | CN1007487B Optical heterodyne receiver |
| 04/03/1990 | CA1267310A1 Acousto-optic frequency shifter utilizing multi-turn optical fiber |
| 03/27/1990 | US4912526 Optical frequency synthesizer/sweeper |
| 03/20/1990 | US4910726 Optical fibre communication networks with local optical power feeding |
| 03/07/1990 | EP0357475A1 Electro-optical measuring system for the frequency analysis of very wide band signals |
| 03/07/1990 | EP0148853B1 Quadature fiber-optic interferometer matrix |
| 03/01/1990 | DE3927121A1 Kollinearer akustooptischer modulator Collinear acousto-optic modulator |
| 02/28/1990 | EP0356302A1 Method and device for the optical filtration and photodetection of intensity-modulated signals |
| 02/20/1990 | US4903342 Optical heterodyne homodyne detection apparatus |
| 02/14/1990 | EP0354567A2 Sending and receiving part for a bidirectional coherent optical communication system |
| 02/13/1990 | US4900917 Polarization insensitive optical communication device utilizing optical preamplification |
| 02/06/1990 | US4899345 Atomic resonance in crossed linear polarization |
| 01/31/1990 | EP0352747A2 Frequency separation stabilization method for optical heterodyne or optical homodyne communication |
| 01/30/1990 | US4897622 Single sideband waveguide modulator |
| 01/24/1990 | CN1006574B Photoelectrical transducing method for monitoring workpiece grooves and assembling condition during welding |
| 01/17/1990 | EP0351133A2 Polarization insensitive optical communication device utilizing optical preamplification |
| 01/09/1990 | US4893353 Optical frequency synthesizer/sweeper |
| 12/19/1989 | US4888817 Polarization diversity light receiving system using baseband combining |
| 12/13/1989 | EP0346169A1 Method and system for the transmission of signal packets over an optical line |
| 12/13/1989 | EP0345889A1 Device for optical heterodyne detection and integrated optical component suitable for use in such a device |
| 12/12/1989 | US4887314 Optical FSK demodulator |
| 11/29/1989 | CN1005952B 光学外差接收机 Optical heterodyne receiver |
| 11/23/1989 | EP0342694A2 Optical polarisation diversity receiver |
| 11/21/1989 | US4882771 Single laser optical communication system and method |
| 10/18/1989 | EP0337796A2 Device for measuring optical frequency modulation characteristics |
| 10/10/1989 | US4872738 Acousto-optic fiber-optic frequency shifter using periodic contact with a surface acoustic wave |
| 10/10/1989 | CA1262261A1 Optical mixer for upconverting or downconverting an optical signal |
| 10/03/1989 | US4871254 Method and device for detecting propagation time variations in a ring interferometer and application thereof to wave length control |
| 09/19/1989 | US4868897 Network formed as an optical homodyne or heterodyne receiver circuit |
| 09/19/1989 | US4867522 Wavelength sensitive optical devices |
| 09/19/1989 | CA1259508A1 Single mode fiber optic saturable absorber |
| 09/12/1989 | US4865449 Optical signal rejection filter and application of said filter to ring interferometers |
| 09/05/1989 | US4864312 Device for optical control of a beam-scanning antenna |
| 08/29/1989 | US4862101 System for producing spectrally pure optical pumping light |
| 08/23/1989 | EP0329186A2 Polarization diversity optical receiver for coherent optical communication |
| 08/16/1989 | EP0328156A1 Digital information transmission system and method |
| 08/15/1989 | US4856899 Optical frequency analyzer using a local oscillator heterodyne detection of incident light |
| 08/08/1989 | US4856094 Arrangement for polarization control, such as for an optical heterodyne or homodyne receiver |
| 08/08/1989 | US4856093 Optical heterodyne receiver |
| 08/08/1989 | US4856092 Optical pulse generating arrangements |
| 08/08/1989 | US4855243 Neurological and biological molecular electro-optical devices and methods |
| 08/08/1989 | US4854677 Interferometric/feedback spatial light modulation system and method |
| 08/08/1989 | CA1258313A1 Molecular electro-optical transistor and switch |
| 08/08/1989 | CA1258292A1 Optical communications systems and process for signal amplification using stimulated brillouis scattering(sbs) and laser utilized in the system |
| 07/26/1989 | EP0325281A2 Optical transmitter, optical receiver and optical transmission apparatus and control method of optical receiver |
| 07/25/1989 | US4852106 Optical system for producing controlled beat frequency |
| 07/25/1989 | CA1257925A1 Acousto-optic frequency shifter |
| 07/18/1989 | US4850048 Optical receiver with automatic polarization matching |
| 07/18/1989 | CA1257674A1 Injection controlled laser |
| 07/11/1989 | US4847521 Device for the amplification of light-sensitive |
| 07/11/1989 | US4847477 Reducing phase fluctuations in a coherent radiation beam using feedforward control |
| 07/05/1989 | EP0323073A2 Wavelength conversion using self electrooptic effect devices |
| 07/05/1989 | EP0322893A2 A polarization diversity optical receiving apparatus |
| 06/28/1989 | CN2040261U Electronic luminous-flux modulator |
| 06/27/1989 | US4843609 Optical integrated circuit for heterodyne detection |
| 06/27/1989 | CA1256501A1 Optical heterodyne mixers providing image-frequency rejection |
| 06/20/1989 | US4841529 System for generating a stable optical frequency |
| 06/13/1989 | CA1255755A1 Polarization independent coherent optical heterodyne receivers |
| 06/07/1989 | EP0319242A2 Subcarrier-multiplexed optical transmission systems using optical channel selection |
| 06/07/1989 | EP0319174A2 Control circuit for the local oscillator of an optical homodyne or heterodyne receiver of a phase shift keying system |
| 06/06/1989 | CA1255400A1 Fiber soliton optical telecommunication system |
| 05/23/1989 | US4833681 Semiconductor laser wavelength stabilizer |
| 05/17/1989 | EP0316194A1 A tunable wavelength filter |
| 05/16/1989 | US4831663 Digital signal transmission/reception using differential polarization modulation/demondulation |
| 05/09/1989 | US4829598 Optical receiver with an optical coupler and an electronic amplifier |
| 05/09/1989 | US4829597 Satellites to and from submarines |
| 05/03/1989 | EP0314491A2 Polarization diversity light receiving system |
| 05/03/1989 | EP0314097A2 An optical heterodyne homodyne detection apparatus |
| 05/02/1989 | CA1253571A1 Polarization insensitive coherent lightwave detector |
| 04/19/1989 | EP0208730B1 Optical fibre networks |
| 04/18/1989 | US4822992 Optical device |
| 04/18/1989 | CA1252832A1 Optical pulse receiving circuit |
| 04/11/1989 | US4820929 Dynamic infrared simulation cell |
| 04/05/1989 | EP0310174A1 Device for optical heterodyne or homodyne detection of an optical signal beam and receiver provided with such a device |
| 03/28/1989 | US4817207 Optical communication system utilizing phase modulation |
| 03/28/1989 | US4817206 Optical-fiber transmission system with polarization modulation and heterodyne coherent detection |