发明公开
- 专利标题： PHOTORECEPTOR USING MACH-ZEHNDER INTERFEROMETER
- 专利标题（中）： 与Mach-Zehnder干涉PR
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申请号： EP06756401.3申请日： 2006-05-19
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公开(公告)号： EP1953931A9公开(公告)日： 2009-01-07
- 发明人: YONEYAMA, Mikio , SAITOU, Fumiaki , ONO, Shigeru , TAKEUCHI, Yosuke , YONENAGA, Kazushige , KUWAHARA, Shoichiro , YOSHIDA, Eiji , MIYAMOTO, Yutaka , KAWAKAMI, Hiroto
- 申请人： NTT ELECTRONICS CORPORATION , NIPPON TELEGRAPH AND TELEPHONE CORPORATION
- 申请人地址： Shibuya Mark City, 1-12-1 Dogenzaka, Shibuya-ku Tokyo 150-0043 JP
- 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： Shibuya Mark City, 1-12-1 Dogenzaka, Shibuya-ku Tokyo 150-0043 JP
- 代理机构： Popp, Eugen
- 优先权： JP2005317332 20051031
- 国际公布： WO2007052380 20070510
- 主分类号： H04B10/04
- IPC分类号： H04B10/04 ; G02F1/01 ; H04B10/06 ; H04B10/14 ; H04B10/142 ; H04B10/152 ; H04B10/26 ; H04B10/28 ; H04L27/22
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.
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
- EP1953931B1 PHOTORECEPTOR USING MACH-ZEHNDER INTERFEROMETER 公开/授权日：2016-07-27
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