Novel bidirectional optical add-drop multiplexer
An add-drop multiplexer and two-way optical technology, applied in the field of optical communication, can solve the problems of large insertion loss and low system reliability, and achieve the effect of improving reliability and reducing insertion loss.
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[0010] A new type of bidirectional optical add-drop multiplexer, such as figure 2 As shown, it is mainly composed of 2 DWDM modules and 1 D1×2 optical switch. The common end of the first dense wavelength division multiplexing module is connected to the first external multiplexing port, the reflection end of the first dense wavelength division multiplexing module is connected to the reflection end of the second dense wavelength division multiplexing module, and the second dense wavelength division multiplexing module The common end of the multiplexing module is connected to the external second multiplexing port. The first selection end of the first dense wavelength division multiplexing module and the first selection end of the second dense wavelength division multiplexing module are partially connected to the two branch ends of the first group of optical switches of the D1×2 optical switch, the first The second selection end of the dense wavelength division multiplexing modu...
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