Invention Grant
- Patent Title: Optical spectral shaping for nonlinearity enhancement in high speed digital coherent optical transmissions
- Patent Title (中): 用于高速数字相干光传输中非线性增强的光谱整形
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Application No.: US13654960Application Date: 2012-10-18
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Publication No.: US09337923B2Publication Date: 2016-05-10
- Inventor: Lei Xu , Shaoliang Zhang , Fatih Yaman , Ting Wang , Yoshihisa Inada , Takaaki Ogata , Yasuhiro Aoki
- Applicant: NEC Laboratories America, Inc. , NEC Corporation
- Applicant Address: JP
- Assignee: NEC Corporation
- Current Assignee: NEC Corporation
- Current Assignee Address: JP
- Agent Joseph Kolodka
- Main IPC: H04B10/12
- IPC: H04B10/12 ; H04B10/00 ; H04B10/04 ; H04B10/079 ; H04B10/2507 ; H04B10/07 ; H04B10/2543
Abstract:
A method includes evaluating an optical signal spectrum for estimated filtering parameters of an optical spectral filtering device for shaping optical signal spectrum, determining a feedback for fine tuning the optical spectral filtering device for nonlinearity tolerance enhancement in the optical transmission system, responsive to received optical signal quality in the optical signal spectrum; and using the feedback to adjust said optical spectral filtering device for predetermined shaping and predetermined fiber nonlinearity tolerance in the optical transmission system.
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