发明授权
- 专利标题: Optical receiver using Mach-Zehnder interferometer
- 专利标题(中): 光接收机采用马赫 - 曾德干涉仪
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申请号: US12092031申请日: 2006-05-19
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公开(公告)号: US07995930B2公开(公告)日: 2011-08-09
- 发明人: Mikio Yoneyama , Fumiaki Saitou , Shigeru Ono , Yosuke Takeuchi , Kazushige Yonenaga , Shoichiro Kuwahara , Eiji Yoshida , Yutaka Miyamoto , Hiroto Kawakami
- 申请人: Mikio Yoneyama , Fumiaki Saitou , Shigeru Ono , Yosuke Takeuchi , Kazushige Yonenaga , Shoichiro Kuwahara , Eiji Yoshida , Yutaka Miyamoto , Hiroto Kawakami
- 申请人地址: JP Tokyo JP Tokyo
- 专利权人: NTT Electronics Corporation,Nippon Telegraph and Telephone Corporation
- 当前专利权人: NTT Electronics Corporation,Nippon Telegraph and Telephone Corporation
- 当前专利权人地址: JP Tokyo JP Tokyo
- 代理机构: Miles & Stockbridge PC
- 代理商 James T. Carmichael; Otilia Gabor
- 优先权: JP2005-317332 20051031
- 国际申请: PCT/JP2006/310045 WO 20060519
- 国际公布: WO2007/052380 WO 20070510
- 主分类号: H04B10/06
- IPC分类号: H04B10/06
摘要:
The present invention relates to an optical receiver, in which the transmittance of a Mach-Zehnder interferometer can be locked at a normal operation point in a simple structure and control. A transmittance detecting circuit and a minute modulation signal detecting circuit are provided in parallel after a balanced optical receiver, and a switch is selectively connectable either a minute modulation signal detecting circuit and a transmittance detecting circuit. In the initial stage of frequency pull-in, the switch is set to connect the transmittance detecting circuit to the synchronous detection circuit. If the transmittance detecting circuit detects that the transmittance of the Mach-Zehnder interferometer at the carrier frequency becomes a desired transmittance, the connection of the switch is switched from the transmittance detecting circuit to the minute modulation signal detecting circuit.
公开/授权文献
- US20090097867A1 OPTICAL RECEIVER USING MACH-ZEHNDER INTERFEROMETER 公开/授权日:2009-04-16