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Class Information
Number: 359/337.1
Name: Optical: systems and elements > Optical amplifier > Correction of deleterious effects > Spectral gain flattening or equalization
Description: Subject matter wherein the correction includes attenuating the signal by nonsaturable absorption of at least part of the amplification uniform over a range of the electromagnetic spectrum.

Sub-classes under this class:

Class Number Class Name Patents
359/337.11 Feedback 130

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8675708 Laser oscillation apparatus Mar. 18, 2014
8553318 Optical amplifying device, gain control method, optical transmission device, and gain control device Oct. 8, 2013
8514923 System and a method of regulating a slicer for a communication receiver Aug. 20, 2013
8508842 Optical signal amplifier, method of optical amplification and optical network Aug. 13, 2013
8477030 Optical amplifier module and dispersion compensation fiber loss detection method Jul. 2, 2013
8447184 Method for the raman amplification of optical signals and transmission system May. 21, 2013
8363308 Fiber optical device and method of driving the same Jan. 29, 2013
8310749 Ultra-short high-power light pulse source Nov. 13, 2012
8294981 Optical amplifiers using switched filter devices Oct. 23, 2012
8224139 Tunable optical filter Jul. 17, 2012
8204379 Noise reduction in optical communications networks Jun. 19, 2012
8189256 Gain equalizer, optical amplifier, loss compensation method, and optical amplification method May. 29, 2012
8174758 Optical amplifier May. 8, 2012
8174757 Wavelength determining apparatus, method and program for thin film thickness monitoring light May. 8, 2012
8107819 Systems and methods for interference prediction Jan. 31, 2012
8094369 Regulatable optical amplifier, and method for regulating an optical amplifier Jan. 10, 2012
8077382 Gain-clamped optical amplifying apparatus using fiber Raman amplifier having Raman cavity Dec. 13, 2011
8077383 Optical amplifier Dec. 13, 2011
8064130 Optical amplifier Nov. 22, 2011
8004752 Multi-wavelength light amplifier Aug. 23, 2011
7999999 Article comprising a multichannel optical amplified transmission system with functional upgrade capabilities and universal modules Aug. 16, 2011
7969648 Gain and signal level adjustments of cascaded optical amplifiers Jun. 28, 2011
7940452 Method for acquiring spectrum shape of a gain flattening filter in an optical amplifier May. 10, 2011
7924497 System and method for gain equalization and optical communication system incorporating the same Apr. 12, 2011
7924499 Gain and signal level adjustments of cascaded optical amplifiers Apr. 12, 2011
7916385 Apparatus and methods for optical communication Mar. 29, 2011
7911684 Variable gain erbium doped fiber amplifier Mar. 22, 2011
7899331 WDM optical transmission system and optical amplifying apparatus Mar. 1, 2011
7894129 Laser device and optical amplifier Feb. 22, 2011
7894501 Laser device and optical amplifier Feb. 22, 2011
7880960 Optical amplifier and abnormality detection method for the same Feb. 1, 2011
7860396 Noise reduction in optical communications networks Dec. 28, 2010
7813650 Optical system Oct. 12, 2010
7733562 Optical equalization of multi-level symbol constellations Jun. 8, 2010
7715093 Individual band gain equalizer for optical amplifiers May. 11, 2010
7667889 Methods and systems for gain control in pulsed optical amplifiers Feb. 23, 2010
7657187 Optical transmission apparatus and optical transmission control method for wavelength-division-multiplexed optical signal Feb. 2, 2010
7643206 Optical amplifier Jan. 5, 2010
7643758 CWDM system architecture with amplification Jan. 5, 2010
7619812 Method and arrangement for the rapid adjustment of the tilt of optical WDM signals Nov. 17, 2009
7609437 Optical amplifier apparatus Oct. 27, 2009
7602545 Gain-flattening apparatus and methods and optical amplifiers employing same Oct. 13, 2009
7589888 Optical amplifier having a constant gain profile Sep. 15, 2009
7586673 Optical gain waveguide and method of controlling the same Sep. 8, 2009
7548368 Raman amplifier, optical repeater, and raman amplification method Jun. 16, 2009
7522334 Optical communication systems including optical amplifiers and amplification methods with flat noise figure profile Apr. 21, 2009
7495825 Integration of a gain equalization filter in a gain medium Feb. 24, 2009
7466477 Optical fiber amplifier and dispersion compensating fiber module for optical fiber amplifier Dec. 16, 2008
7460296 Compensation for spectral power tilt from scattering Dec. 2, 2008
7443576 Compensation for spectral power tilt from scattering Oct. 28, 2008

1 2 3 4 5

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