76245148
Apr 23, 2001
Fiber optic telecommunications systems, namely, optical cross-connects, optical add/drop multi-plexers, DWDM (Dense Wavelength Division Multiplexing) terminals, SONET switches, SONET add/drop multi-plexers and ethernet switches incorporating DWDM, optical switching and optical filtering technologies for the transport and routing of optical telecommunication signals
Electrical and Scientific Apparatus