Optical add/drop multiplexer

Optical add/drop multiplexer

  • CN 101,242,233 A
  • Filed: 08/16/2005
  • Published: 08/13/2008
  • Est. Priority Date: 08/16/2004
  • Status: Active Application
First Claim
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1. , a kind of optical add/drop multiplexer, be used for switching-over light path and draw or insert channel with predetermined wavelength, this light path is used for the output signal that changes over each wavelength through multiplexing a plurality of wavelength and the input signal that inputs to input port having, this output signal is directed to the output port at a plurality of routes in each transmission path, and this optical add/drop multiplexer comprises:

  • Core cell comprises;

    By the path, make input signal by arriving output port;

    Draw port, be used to draw input signal with predetermined wavelength;

    AndInsert port, be used for inserting described channel to input signal,Wherein, described core cell comprises;

    The one 1 * 2 optical coupler, its receiving inputted signal also has two output ports,Wherein 1 be the input quantity, and 2 be output quantity;

    M * 1 wavelength-selective switches, it has M input port and input signal is output as output signal, and wherein M is the quantity of positive integer and expression input, and 1 be the quantity of output;

    By the path, it is to form by an input port that an output port of the one 1 * 2 optical coupler is connected to M * 1 wavelength-selective switches;

    The 21 * 2 optical coupler, it receives the input signal from other output ports of the one 1 * 2 optical coupler, and has two output ports, and wherein 1 is the quantity of input, and 2 be the quantity of output;

    1 * N light demultiplexer, it has N output port, and is connected to an output port of the 21 * 2 optical coupler, and wherein 1 is the quantity of input, and N is the quantity of positive integer and expression output;

    The 31 * 2 optical coupler, it receives the input signal from other output ports of the 21 * 2 optical coupler, and has two output ports, and wherein 1 is the quantity of input, and 2 be the quantity of output;

    Wherein,An output port of the 31 * 2 optical coupler is set as wavelength interconnection port;

    AndPart in a plurality of input ports of M * 1 wavelength-selective switches is set as wavelength interconnection port.

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