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Class Information
Number: 398/147
Name: Optical communications > Transmitter and receiver system > Including optical waveguide > Dispersion compensation
Description: Subject matter comprises means for cor recting or reducing distortion induced by (a) scattering in a light beam as it travels along the fiber or (b) overlapping of a light signal on one wavelength to different wavelengths because of reflected ray and different refractive index of fiber material.










Sub-classes under this class:

Class Number Class Name Patents
398/148 Using dispersion compensation optical fiber (e.g., dcof) 179
398/149 Using equalizing filter (e.g., interferometer, grating) 148
398/150 Using optical phase conjugation 62


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13

Patent Number Title Of Patent Date Issued
7366416 Hub for a passive optical network hub Apr. 29, 2008
7362977 Method for reduction of non-linear intra-channel distortions Apr. 22, 2008
7362979 Apparatus and method for duobinary transmission Apr. 22, 2008
7362980 Duobinary transmission system and method Apr. 22, 2008
7359645 Dispersion compensating method, optical transmission system, and optical transmission apparatus Apr. 15, 2008
7357521 Chromatic dispersion compensation device and method Apr. 15, 2008
7352970 Dispersion management system for soliton optical transmission system Apr. 1, 2008
7352971 Broadband control of polarization mode dispersion Apr. 1, 2008
7343094 Transmission characteristics evaluation system and pseudo transmission path apparatus thereof Mar. 11, 2008
7340148 Methods and systems for controlling fiber polarization mode dispersion (PMD) Mar. 4, 2008
7340174 Programmable OADM with chromatic dispersion, dispersion slope and amplitude ripple compensation, and method Mar. 4, 2008
7340187 Optical signal monitoring method and apparatus Mar. 4, 2008
7336870 Optical transmission system Feb. 26, 2008
7336899 Method for determining the dispersion characteristics of minimum phase filters Feb. 26, 2008
7333728 Methods and systems for polarization mode dispersion compensation Feb. 19, 2008
7330663 PMD-reduction processing for a multi-channel receiver Feb. 12, 2008
7324758 Optical dispersion monitoring apparatus and optical dispersion monitoring method, and optical transmission system using same Jan. 29, 2008
7321733 Split-band optical transmission system and optical transmission method used therein Jan. 22, 2008
7319819 Suppression of four-wave mixing in ultra dense WDM optical communication systems through optical fibre dispersion map design Jan. 15, 2008
7319821 Chromatic dispersion generating apparatus Jan. 15, 2008
7313325 Channel allocation method in multirate WDM system Dec. 25, 2007
7308211 Optical receiver and method for controlling dispersion compensation Dec. 11, 2007
7302188 Disperse equalizer and disperse equalizing method Nov. 27, 2007
7302189 Optical component provided with demultiplexing function and wavelength dispersion compensator Nov. 27, 2007
7295781 Polarization mode dispersion compensation Nov. 13, 2007
7292790 Method and system for compensating residual dispersion curvature Nov. 6, 2007
7289739 Polarization mode dispersion controller device and method for its operation Oct. 30, 2007
7283691 Methods and systems for controlling fiber polarization mode dispersion (PMD) Oct. 16, 2007
7283744 Performance monitoring based on optical autocorrelation Oct. 16, 2007
7283752 Method and apparatus for PMD/PDL/PDG mitigation Oct. 16, 2007
7280759 Optical transmission system, optical multiplexer, and optical demultiplexer Oct. 9, 2007
7280765 Low total excursion dispersion maps Oct. 9, 2007
7280766 Method and device for processing an optical signal Oct. 9, 2007
7274879 Compensation of temperature-induced dispersion drift in optical communication links Sep. 25, 2007
7274878 Dispersion compensation method in optical communication system having optical add drop multiplexing capability Sep. 25, 2007
7272286 Dispersion managed HOM multimode optical fibre Sep. 18, 2007
7269358 Optical transmitter for increased effective modal bandwidth transmission Sep. 11, 2007
7266257 Reducing crosstalk in free-space optical communications Sep. 4, 2007
7263296 Optical transmission system using in-line amplifiers Aug. 28, 2007
7262913 Chromatic dispersion and dispersion slope compensating apparatus Aug. 28, 2007
RE39785 System for optically transmitting frequency-division-multiplexed signal and transmitter therefor Aug. 21, 2007
7257292 Variable dispersion compensator Aug. 14, 2007
7254333 Low-cost WDM terminal device accommodating plurality of client signal Aug. 7, 2007
7248799 Method and an improved device for controlling the power delivered at the output of a node of an optical network that switches bands of wavelengths Jul. 24, 2007
7242868 System and method for performing high-speed communications over fiber optical networks Jul. 10, 2007
7227686 Tunable PMD emulators and compensators Jun. 5, 2007
7221871 Identification of polarization-mode dispersion on a communication network May. 22, 2007
7218818 Dispersion compensation device and dispersion compensation method May. 15, 2007
7218856 System for compensating for chromatic dispersion and polarization mode dispersion May. 15, 2007
7209665 Control concept for a multistage polarization mode dispersion compensator Apr. 24, 2007

1 2 3 4 5 6 7 8 9 10 11 12 13










 
 
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