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    PHOTORECEPTOR USING MACH-ZEHNDER INTERFEROMETER
    1.
    发明公开
    PHOTORECEPTOR USING MACH-ZEHNDER INTERFEROMETER 有权
    使用MACH-ZEHNDER干涉仪的光电传感器

    公开(公告)号：EP1953931A1

    公开(公告)日：2008-08-06

    申请号：EP06756401.3

    申请日：2006-05-19

    申请人： NTT ELECTRONICS CORPORATION ,  NIPPON TELEGRAPH AND TELEPHONE CORPORATION

    发明人： YONEYAMA, Mikio ,  SAITOU, Fumiaki ,  ONO, Shigeru ,  TAKEUCHI, Yosuke ,  YONENAGA, Kazushige ,  KUWAHARA, Shoichiro ,  YOSHIDA, Eiji ,  MIYAMOTO, Yutaka ,  KAWAKAMI, Hiroto

    IPC分类号： H04B10/04 ,  G02F1/01 ,  H04B10/06 ,  H04B10/14 ,  H04B10/142 ,  H04B10/152 ,  H04B10/26 ,  H04B10/28 ,  H04L27/22

    CPC分类号： H04L27/2071 ,  G02F1/0327 ,  H04B10/677 ,  H04L27/223

    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.

    摘要翻译： 本发明涉及一种光学接收器，其中Mach-Zehnder干涉仪的透射率可以在简单的结构和控制下被锁定在正常操作点。 在平衡式光接收器之后并联地提供透射率检测电路和微小调制信号检测电路，并且开关可选择性地连接微小调制信号检测电路和透射率检测电路。 在频率引入的初始阶段，开关设置为将透射率检测电路连接到同步检测电路。 如果透射率检测电路检测到在载波频率处Mach-Zehnder干涉仪的透射率变成期望的透射率，则开关的连接从透射率检测电路切换到微小调制信号检测电路。