发明授权
- 专利标题: Dispersion compensating apparatus and dispersion compensating method
- 专利标题(中): 色散补偿装置和色散补偿方法
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申请号: US12292956申请日: 2008-12-01
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公开(公告)号: US08306430B2公开(公告)日: 2012-11-06
- 发明人: Akira Miura , Hiroki Ooi , Kiyotoshi Noheji
- 申请人: Akira Miura , Hiroki Ooi , Kiyotoshi Noheji
- 申请人地址: JP Kawasaki
- 专利权人: Fujitsu Limited
- 当前专利权人: Fujitsu Limited
- 当前专利权人地址: JP Kawasaki
- 代理机构: Staas & Halsey LLP
- 主分类号: H04B10/00
- IPC分类号: H04B10/00
摘要:
In a dispersion compensating apparatus, a reference identifying unit identifies a reference (X dB down) that makes a penalty lower than a predetermined value in accordance with optical signal information and a reference identifying table, and a VIPA plate temperature adjusting unit adjusts a refractive index of a VIPA plate by modifying a temperature of the VIPA plate so that a transmission center wavelength derived from the reference matches the wavelength defined by an ITU-T Grid. If a dispersion compensation value setting unit performs an optimal residual dispersion value search, the VIPA plate temperature adjusting unit determines if a filtering penalty is lower than a predetermined value in accordance with a penalty management table. If the filtering penalty is lower than the predetermined value, temperature adjustment of the VIPA plate is not performed.