Channel power equalizer based on non-balanced loss optical fiber non-linear environment
Title：
Channel power equalizer based on non-balanced loss optical fiber non-linear environment
Application Number：
 200510085578
Application Date：
 2005/07/29
Announcement Date：
 2005/12/21
Pub. Date：
Publication Number：
 1710840
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H04B 10/18, H04J 14/02
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Feng Xue, Jiang Xubiao, Liu Xiaoming, Liu Yue, Zhang Pu, Zhao Jianhui
Key Words：
 non-balanced loss, optical fiber, non-linear environment, channel power, equalizer
Abstract：
 Belonging to technical area of optical fiber communication, the invention includes a non-linear optical fiber loop mirror composed of an annular set, 1:1 fiber coupler and a segment of transmission fiber connected to each other. One end of the annular set is connected to an input end of the 1:1 fiber coupler. An optical attenuator is inserted at unsymmetrical position inside the non-linear optical fiber loop mirror. One piece of polarisation controller is setup at two port of 1:1 fiber coupler respectively. Further, device in use for introducing non-reciprocal phase bias is setup inside the non-linear optical fiber loop mirror. Through few parameters designed, the invention implements self-adaptive quick and effective balancing control without multiplexing, demultiplexing channel; meanwhile, gets rid of restriction of bi-directional EDFA in NALM scheme furthest so as to lower complexity of system and operational difficulty.
Claim：
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PCT：
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2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
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