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    OPTICAL WEVELENGTH MULTIPLEXING/DEMULTIPLEXING CIRCUIT, OPTICAL MODULE USING OPTICAL WAVELENGTH MULTIPLEXING/DEMULTIPLEXING CIRCUIT, AND COMMUNICATION SYSTEM
    1.
    发明公开
    OPTICAL WEVELENGTH MULTIPLEXING/DEMULTIPLEXING CIRCUIT, OPTICAL MODULE USING OPTICAL WAVELENGTH MULTIPLEXING/DEMULTIPLEXING CIRCUIT, AND COMMUNICATION SYSTEM 有权
    光波长多路复用器/多路分离器电路，用光学波长多路复用/多路分离器电路和通信系统的光模块

    公开(公告)号：EP2378329A1

    公开(公告)日：2011-10-19

    申请号：EP10729181.7

    申请日：2010-01-08

    申请人： Nippon Telegraph And Telephone Corporation

    发明人： KITOH, Tsutomu ,  KAMEI, Shin ,  HASHIMOTO, Toshikazu ,  SAKAMAKI, Yohei ,  TAKAHASHI, Hiroshi ,  OGUMA, Manabu

    IPC分类号： G02B6/12

    CPC分类号： G02B6/12019 ,  G02B6/12014 ,  G02B6/12016 ,  G02B6/12021

    摘要： When a conventional synchronized AWG is employed to extend a transmission passband, an increase in loss near the optical center frequency can not be avoided. Because of passband width limit, a problem has existed in that the synchronized AWG could not be applied for a large, complicated communication system wherein a signal light passes a number of points. Therefore, an optical wavelength multiplexing/demultiplexing circuit of the present invention is a synchronized AWG, which includes an optical splitter arranged in an interference circuit that is connected on the side of one slab waveguide. The splitting ratio of the optical splitter varies, depending on the optical frequency, and the value becomes minimum near the optical center frequency of the synchronized AWG. The optical splitter is operated so that the splitting ratio is comparatively great at optical frequencies distant from the optical center frequency.

    摘要翻译： 当采用常规的同步AWG来扩展传输通带附近的光学中心频率损耗增加是无法避免的。 由于适当的带宽限制，一个问题已DASS模同步AWG不能适用于worin的信号光通过的多个点的大的，复杂的通信系统的存在。 因此，在本发明的光波长复用/解复用电路是一个同步AWG，其中在对干扰电路，被布置并连接在一个平板波导的侧分光器包括。 分光器的分光比不同，这取决于光频率，和的值变得接近同步AWG的光学中心频率最小。 光分路器被操作所以没有分束比是在远离光学中心频率的光频率比较大的。

    BROADBAND INTERFEROMETER TYPE POLARIZED LIGHT COMBINER AND SPLITTER
    2.
    发明公开
    BROADBAND INTERFEROMETER TYPE POLARIZED LIGHT COMBINER AND SPLITTER 有权
    麻醉师麻醉师智能干扰仪

    公开(公告)号：EP2439566A1

    公开(公告)日：2012-04-11

    申请号：EP10783151.3

    申请日：2010-06-02

    申请人： Nippon Telegraph And Telephone Corporation

    发明人： MIZUNO, Takayuki ,  GOH, Takashi ,  YAMAZAKI, Hiroshi ,  KAMEI, Shin ,  KITOH, Tsutomu

    IPC分类号： G02B6/126

    CPC分类号： G02B6/12007 ,  G02B6/12023

    摘要： A interferometer type polarization beam combiner and splitter, which can combine or split polarized light over a wide band, is provided. The interferometer type polarization beam combiner and splitter includes: an optical splitter; an optical coupler; an optical path length difference imparting unit, which includes a plurality of optical waveguides arranged between the optical splitting unit and the optical coupling unit; one or two input/output ports connected to the optical splitter; and two input/output ports connected to the optical coupler. A half-integer of a wavelength of λc is set as a normalized phase difference, for the optical path length difference imparting unit, between two polarization states, and means for generating a difference in refractive index dispersion is provided between the optical waveguides of the optical path length difference imparting unit, so that the change rate of the transmittance with respect to wavelength is suppressed for the two polarization states.

    摘要翻译： 提供了可以在宽带上组合或分离偏振光的干涉仪型偏振光束组合器和分离器。 干涉仪型偏振光束组合器和分离器包括：光分路器; 光耦合器; 光路长度差分赋予单元，其包括布置在光分离单元和光耦合单元之间的多个光波导; 连接到光分路器的一个或两个输入/输出端口; 以及连接到光耦合器的两个输入/输出端口。 对于光路长度差分赋予单元，将两个偏振态之间的波长的半整数设为归一化相位差，并且在两个偏振态之间设置用于产生折射率色散差的装置 光路长度差分赋予单元，因此抑制两个偏振态的透射率相对于波长的变化率。

    OPTICAL MULTIPLEXER/DEMULTIPLEXER CIRCUIT
    6.
    发明公开
    OPTICAL MULTIPLEXER/DEMULTIPLEXER CIRCUIT 有权
    OPTISCHE MULTIPLEXER / DEMULTIPLEXER-SCHALTUNG

    公开(公告)号：EP2479593A1

    公开(公告)日：2012-07-25

    申请号：EP10816840.2

    申请日：2010-08-25

    申请人： Nippon Telegraph And Telephone Corporation

    发明人： KITOH, Tsutomu ,  KAMEI, Shin ,  HASHIMOTO, Toshikazu ,  SAKAMAKI, Yohei ,  TAKAHASHI, Hiroshi ,  OGUMA, Manabu

    IPC分类号： G02B6/12

    CPC分类号： G02B6/29391 ,  G02B6/12009 ,  G02B6/12016 ,  G02B6/12019 ,  G02B6/12021 ,  G02B6/29355 ,  G02B6/2938 ,  G02B2006/12159

    摘要： Provided is an optical wavelength multi/demultiplexer having transmission characteristics with a higher rectangular degree than a conventional one. An example (1100) of a two-stage lattice circuit including an optical wavelength multi/demultiplexer according to the present invention includes an input waveguide (1101), a third optical coupler (1102), a third arm waveguide (1103), a fourth arm waveguide (1104), a second optical coupler (1105), a first arm waveguide (1106), a second arm waveguide (1107), a first optical coupler (1108), and output waveguides (1109). The optical path length difference between the third and fourth arm waveguides and the optical path length difference between the first and second arm waveguides are designed to be ΔL. The path passing through the third and first arm waveguides has an optical path length difference of 2•ΔL from the path passing through the fourth and second arm waveguides. The path passing through the third and second arm waveguides or the path passing through the fourth and first arm waveguides has an optical path length difference of ΔL from the path passing through the fourth and second arm waveguides.

    摘要翻译： 提供具有比传统特性更高的矩形程度的光波长多路复用器/解复用器。 包括根据本发明的光波长多/解复用器的两级晶格电路的示例（1100）包括输入波导（1101），第三光耦合器（1102），第三臂波导（1103），第四 臂波导（1104），第二光耦合器（1105），第一臂波导（1106），第二臂波导（1107），第一光耦合器（1108）和输出波导（1109）。 第三和第四臂波导之间的光程长度差和第一和第二臂波导之间的光程长度差被设计为“L. 穿过第三和第一臂波导的路径具有从穿过第四和第二臂波导的路径的2“¢”L的光程差。 穿过第三臂和第二臂波导的路径或通过第四臂和第一臂波导的路径具有距离通过第四臂和第二臂波导的路径“L”的光程长度差。