no resistance of the present invention is completely independent of wavelength gyeseong to realize a reconfigurable optical signal branches , inserted to provide a multiplexing device, broadcasting a track direction the separation of the optical signal of the wavelength between the direction 1 ~ X input and a plurality of N N via the optical switches the optical signal of the wavelength between the direction 1 ~ X response is switched to any output port, and the corresponding K 1 coupler / light switch is synthesized an optical signal received and the Drop unit for transmission to the corresponding receiver RX, with the N optical signals output from the transmitter TX 1 K coupler / through the optical switch broadcasting to a plurality of N N optical switch, each of N N optical switch (X is an integer of 2 or greater and K, N is an integer) and switch to a desired output port corresponding to the optical signals over the It comprises a composite optical signal in the corresponding direction and for outputting a track 1 ~ X direction unit to Add. According to the present invention and Add Drop a fully independent non-resistance of gyeseong the wavelength can be achieved. ;
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