76232571
Mar 30, 2001
Feb 8, 2005
OPTICAL COMMUNICATION NETWORKS AND OPTICAL NETWORK ELEMENTS NAMELY OPTICAL WAVEGUIDES, OPTICAL NODES, OPTICAL ADD-DROP MULTIPLEXERS, OPTICAL TRANSMITTERS, OPTICAL TRANSPONDERS, OPTICAL RECEIVERS, SWITCHES, AND ROUTERS FOR AGGREGATING TRAFFIC ONTO OPTICAL WAVEGUIDES
Electrical and Scientific Apparatus