Patent ID: 6684005
Filing Date: 2004-01-27
Classification: G02B,H04J

Abstract:
An add/drop node used in an optical network having two fiber paths for carrying light corresponding to a plurality of channels in opposite directions, comprising:a pair of add/drop modules corresponding to one of the plurality of channels, each of the add/drop modules comprising, an add device configured to add light to a first one of the fiber paths, and a drop device configured to deflect a portion of the light from a second one of the fiber paths, wherein the pair of add/drop modules have identical construction and said first and second fiber paths carry light in opposite directions; an optical client portion configured to interface with a client station to receive and transmit optical signals, the optical client portion comprising; a first optical receiver coupled to the client station to receive the optical signals; a first optical transmitter coupled to the first optical receiver and configured to transmit the received optical signals to one of the add/drop modules; a second optical receiver coupled to the one add/drop module; and a second optical transmitter coupled to the second optical receiver and configured to transmit optical signals to the client station.