Invention Grant
- Patent Title: Method and apparatus for adaptive nonlinear equalization in a polarization multiplexing optical communication system
- Patent Title (中): 偏振复用光通信系统中自适应非线性均衡的方法和装置
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Application No.: US13661741Application Date: 2012-10-26
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Publication No.: US09209899B2Publication Date: 2015-12-08
- Inventor: Weizhen Yan , Zhenning Tao
- Applicant: FUJITSU LIMITED
- Applicant Address: JP Kawasaki
- Assignee: FUJITSU LIMITED
- Current Assignee: FUJITSU LIMITED
- Current Assignee Address: JP Kawasaki
- Agency: Staas & Halsey LLP
- Priority: CN201110333936 20111028
- Main IPC: H03H7/30
- IPC: H03H7/30 ; H03H7/40 ; H03K5/159 ; H04B10/2507 ; H04B10/2543
Abstract:
A method and apparatus for adaptive nonlinear equalization, comprising: a horizontal polarization component compensation unit configured to calculate a linear damage value of an input signal, a nonlinear damage value of a horizontal component of the input signal, and a crosstalk value caused by a vertical component to the horizontal component, and compensate the horizontal component according to the linear damage value, the nonlinear damage value and the crosstalk value; and, a vertical polarization component compensation unit configured to calculate a linear damage value of the input signal, a nonlinear damage value of a vertical component of the input signal, and a crosstalk value caused by a horizontal component to the vertical component, and compensate the vertical component according to the linear damage value, the nonlinear damage value and the crosstalk value. With the present invention, Intra-channel nonlinear damage of a polarization multiplexing optical communication system is effectively compensated.
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