Invention Grant
- Patent Title: System and method for compensating for polarization dependent loss
- Patent Title (中): 用于补偿偏振相关损耗的系统和方法
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Application No.: US12868205Application Date: 2010-08-25
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Publication No.: US08705167B2Publication Date: 2014-04-22
- Inventor: Youichi Akasaka
- Applicant: Youichi Akasaka
- Applicant Address: JP Kawasaki-shi
- Assignee: Fujitsu Limited
- Current Assignee: Fujitsu Limited
- Current Assignee Address: JP Kawasaki-shi
- Agency: Baker Botts L.L.P.
- Main IPC: H01S3/13
- IPC: H01S3/13 ; H04B10/293 ; H01S3/10

Abstract:
In accordance with one embodiment of the present disclosure a system for compensating for polarization dependent loss experienced by an optical signal comprises an optical amplifier configured to amplify an optical signal and having a polarization dependent gain (PDG). The system also comprises a polarization rotator coupled to the amplifier and configured to rotate the polarization of the optical signal before the signal enters the amplifier. The system also comprises a polarization dependent loss (PDL) controller coupled to the amplifier and the rotator. The PDL controller may be configured to determine a post-amplifier PDL of the optical signal as the signal leaves the optical amplifier. The PDL controller may also be configured to control the rotator to rotate the polarization of the optical signal based on the post-amplifier PDL, such that the PDG of the amplifier compensates for the PDL experienced by the optical signal.
Public/Granted literature
- US20120050846A1 SYSTEM AND METHOD FOR COMPENSATING FOR POLARIZATION DEPENDENT LOSS Public/Granted day:2012-03-01
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