Optical switch having means to insert an identifier for monitoring of network connections

摘要

The device (D) has several input ports coupled to respective upstream optical lines (FE1-FE4) dedicated to a transport of multiplexed channels (R1, R2), and a switching module (MC) coupling each input port to each exit point. A processing module (MT1) such as electrically controlled variable optical attenuator (VOA), adds a signature including information representative of the device`s own switching node (NC) and information representative of the input port that receives the channel, to the channels that reach each input port.