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Class Information
Number: 359/337.13
Name: Optical: systems and elements > Optical amplifier > Correction of deleterious effects > Spectral gain flattening or equalization > Feedback > Adjusting input signal power
Description: Subject matter wherein the feedback circuit, for the optical energies associated with amplified stimulated emission light, compares a first and second wavelength, then regulates the attenuation so that the optical energies are substantially equal.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8493650 Method and apparatus for suppression of four-wave mixing using polarization control with a high power polarization maintaining fiber amplifier system Jul. 23, 2013
8422121 Optical transmission apparatus and optical signal level checking method Apr. 16, 2013
8320040 Multi-wavelength light amplifier Nov. 27, 2012
8107819 Systems and methods for interference prediction Jan. 31, 2012
8107160 Light output control apparatus Jan. 31, 2012
8068735 Transient control solution for optical networks Nov. 29, 2011
7872794 High-energy eye-safe pulsed fiber amplifiers and sources operating in erbium's L-band Jan. 18, 2011
7826746 Transient control solution for optical networks Nov. 2, 2010
7657041 Laser audio preamplifier, volume control, and multiplexer Feb. 2, 2010
7444078 Transient control solution for optical networks Oct. 28, 2008
7440169 Method for amplifying a time-varying optical signal and optical amplification unit Oct. 21, 2008
7375876 Optical transmitting apparatus having variable optical transmitting unit including plurality of paths May. 20, 2008
7369300 Optical amplifier pre-emphasis and equalization method and optical communications system incorporating same May. 6, 2008
7340165 Optical amplifying device Mar. 4, 2008
7330651 Optical amplifying apparatus, optical transmission system and method of adjusting optical transmission loss Feb. 12, 2008
7236294 Optical amplifier Jun. 26, 2007
7123404 Optical amplifier and optical amplification method Oct. 17, 2006
7081988 Optical amplifier, communication system and method for control tilt of a communication system Jul. 25, 2006
7072585 Per-channel optical amplification using saturation mode Jul. 4, 2006
7058301 Apparatus and method for planned wavelength addition and removal in a wavelength division multiplexed system Jun. 6, 2006
7042634 Optical amplifier May. 9, 2006
7034993 Optical amplifier apparatus Apr. 25, 2006
7027217 Optical pulse generator and optical pulse testing instrument and method Apr. 11, 2006
7010229 Optical transmission systems including optical amplifiers and methods Mar. 7, 2006
7006278 Wavelength-division multiplexing optical transmission system and repeater station therein Feb. 28, 2006
6963436 Method and device for waveform shaping of signal light Nov. 8, 2005
6922532 Optical performance monitoring for D/WDM networks Jul. 26, 2005
6917467 Optical amplifier Jul. 12, 2005
6903864 Method and apparatus for amplification of an optical signal Jun. 7, 2005
6819480 Method and apparatus for controlling the extinction ratio of transmitters Nov. 16, 2004
6798566 Variable optical gain equalizer and variable branching ratio beam splitter Sep. 28, 2004
6735394 Per-channel optical amplification using saturation mode May. 11, 2004
6697188 Radiation power equalizer Feb. 24, 2004
6693739 Method for gain equalization, and device and system for use in carrying out the method Feb. 17, 2004
6633430 Booster amplifier with spectral control for optical communications systems Oct. 14, 2003
6614589 Method and system for controlling amplifier power in an optical communications network Sep. 2, 2003
6600594 Intelligent variable optical attenuator with controller and attenuation calibration Jul. 29, 2003
6583909 Optical communication system and optical signal control method therefor Jun. 24, 2003
6545799 Method and apparatus for optical system link control Apr. 8, 2003
6535331 Wideband optical amplifier and wideband variable wavelength optical source Mar. 18, 2003
6535330 Dynamic controller for a multi-channel optical amplifier Mar. 18, 2003
6525871 Optical amplification apparatus Feb. 25, 2003
6480329 Multi-wavelength light amplifier Nov. 12, 2002
6433925 Optical fiber amplifier and optical transmission system using the same Aug. 13, 2002
6421169 Optical fiber amplifier having variable gain Jul. 16, 2002
6411430 Optical amplifier Jun. 25, 2002
6400499 Multi-wavelength light amplifier Jun. 4, 2002
6381064 Method for gain equalization, and device and system for use in carrying out the method Apr. 30, 2002
6373622 Optical amplification apparatus Apr. 16, 2002
6369938 Multi-wavelength light amplifier Apr. 9, 2002

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