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    OPTICAL WAVELENGTH MULTIPLEXING AND DEMULTIPLEXING CIRCUIT
    1.
    发明公开
    OPTICAL WAVELENGTH MULTIPLEXING AND DEMULTIPLEXING CIRCUIT 有权
    光波长复用和解复用电路

    公开(公告)号：EP2302429A1

    公开(公告)日：2011-03-30

    申请号：EP09797816.7

    申请日：2009-06-30

    申请人： Nippon Telegraph And Telephone Corporation

    发明人： KAMEI Shin ,  KITOH Tsutomu ,  KOHTOKU Masaki ,  SHIBATA Tomohiro ,  TANAKA Takuya ,  INOUE Yasuyuki ,  ITOH Mikitaka

    IPC分类号： G02B6/12

    CPC分类号： G02B6/12028 ,  G02B6/12019 ,  G02B6/29352 ,  G02B6/29398

    摘要： An optical wavelength multiplexing/de-multiplexing circuit having a low loss and a flat transmission spectrum is provided. The optical wavelength multiplexing/de-multiplexing circuit compensates a temperature dependence of a center transmission wavelength which remains in an athermal AWG, and has an excellent accuracy of the center transmission wavelength in a whole operating temperature range or has a comparatively wide operable temperature range. Focusing on the fact that a center transmission wavelength of an MZI-synchronized AWG is approximately an average of a transmission wavelength of the MZI and the center transmission wavelength of the AWG, the temperature dependence of the transmission wavelength in the athermal MZI is modulated and set so as to cancel the temperature dependence of the center wavelength which remains in the athermal AWG. The present invention focuses particularly on an optical coupler in the MZI and modulates the temperature dependence of the transmission wavelength in the MZI by providing the optical coupler itself with a mechanism which changes a phase difference between two outputs by temperature.

    摘要翻译： 提供具有低损耗和平坦透射光谱的光学波长多路复用/多路分解电路。 光学波长多路复用/解多路复用电路补偿保持在无热AWG中的中心透射波长的温度依赖性，并且在整个工作温度范围内具有中心透射波长的极好精度或者具有相对宽的可操作温度范围。 着眼于MZI同步AWG的中心发送波长大致为MZI的发送波长的平均值和AWG的中心发送波长的事实，调制并设定无热MZI中的发送波长的温度依赖性 以消除保持在无热AWG中的中心波长的温度依赖性。 本发明特别关注MZI中的光耦合器，并且通过为光耦合器本身提供一种通过温度改变两个输出之间的相位差的机构来调制MZI中的透射波长的温度依赖性。