Patent ID: 8861968
Filing Date: 2014-10-14
Classification: H04J

Abstract:
1. An inresistant, colorless reconfigurable optical add/drop multiplexing device, wherein the device comprises: a dropping unit, configured to: separate multi-wavelength optical signals which are input to the dropping unit from directions switch the multi-wavelength optical signals from the directions send the optical signals to a corresponding receiver (RX) after combining the received optical signals through a corresponding K×1 coupler/optical switch; and an adding unit, configured to: broadcast the optical signals sent by a transmitter (TX) to the multiple N×N optical switches through N 1×K couplers/optical switches, switch the optical signals to any corresponding output port by the respective N×N optical switches, and multiplex the corresponding optical signals in the directions wherein, X is an integer which is greater than or equal to 2, and K and N are both integers; wherein 1×M optical de-multiplexer units in the directions the 1×M optical de-multiplexer units in the directions the Y N×N optical switches are connected with the 1×M optical de-multiplexer units and configured to switch the input multi-wavelength optical signals in each direction to any corresponding output port, and send the optical signals to the corresponding K×1 couplers/optical switches; wherein, X is an integer which is greater than or equal to 2; K, Y, M and N are all integers greater than 1, K is greater than or equal to Y, and N is greater than or equal to M, and Y×N is greater than or equal to X×M; wherein the adding unit is provided with M×1 multiplexers in the directions the Y N×N optical switches are connected with the M×1 multiplexers and configured to switch the optical signals of multiple direction broadcast from the 1×K couplers/optical switches to any corresponding output port; and the M×1 multiplexers in the directions