发明申请
- 专利标题: OPTICAL TRANSMITTER AND CONTROL METHOD THEREFOR
- 专利标题(中): 光发射机及其控制方法
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申请号: US12013857申请日: 2008-01-14
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公开(公告)号: US20080187324A1公开(公告)日: 2008-08-07
- 发明人: Yuichi AKIYAMA , Hideyuki Miyata , Toshiki Tanaka , Masato Nishihara
- 申请人: Yuichi AKIYAMA , Hideyuki Miyata , Toshiki Tanaka , Masato Nishihara
- 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
- 优先权: JPJP2007-006349 20070115
- 主分类号: H04B10/04
- IPC分类号: H04B10/04
摘要:
The disclosed optical transmitter and control method include performing phase modulation of a light propagating through a corresponding optical path in accordance with a data signal, supplying bias voltages for regulating an operating point of each of phase modulation performed, imparting a predetermined phase difference, supplying bias voltages for phase difference regulation and coupling lights output from the corresponding optical paths. The optical transmitter includes superimposing a pilot signal on either one of bias voltages where the pilot signal has a frequency lower than a frequency of a bit rate of the data signal, and performing a feedback control in accordance with a result of monitoring.
公开/授权文献
- US08582981B2 Optical transmitter and control method therefor 公开/授权日:2013-11-12