Method and system for controlling adaptive optic fiber squeezed electrocontrolled polarization controller
Title：
Method and system for controlling adaptive optic fiber squeezed electrocontrolled polarization controller
Application Number：
 02131330
Application Date：
 2002/09/29
Announcement Date：
 2003/03/12
Pub. Date：
Publication Number：
 1402050
Announcement Number：
 1207609
Grant Date：
 2005-6-22
Granted Pub. Date：
 2005-6-22
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 G02F 1/03
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Yao Minyu, Wen Pingjin, Xu Qianfan
Key Words：
 controll, adaptive optic fiber, squeezed, electrocontrolled, polarization controller
Abstract：
 A control method and system fo r the adaptive optical fibre squeeze type electrically controlled polarization controller is disclosed. It is characterized by that the control mode of drive voltage is variable step length. When feedback signal is raised up, long step is used for controlling speed. When predefined polarized state is close, short step is used for controlling precision. When feedback signal reaches 95 of maximum, an optimizing function is used to prevent the working voltage from being offset from central point. A small-step reset method is used to prevent interruption.
Claim：
Priority：
PCT：
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