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Broadband exchange by coherent multi-carrier switching

: Bachus, E.-J.; Braun, R.-P.; Caspar, C.; Foisel, H.M.; Keil, N.; Yao, H.H.; Strebel, B.

Sunak, H.R.D. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Coherent Lightwave Communications 1989 : 7 - 8 September 1989, Boston, Massachusetts, Proceedings
Bellingham/Wash.: SPIE, 1989 (Proceedings of SPIE 1175)
ISBN: 0-8194-0211-7
Conference "Coherent Lightwave Communications" <4, 1989, Boston/Mass.>
Fraunhofer HHI ()
broadband networks; frequency division multiplexing; optical communication equipment; optical switches; receivers; broadband exchange; wdm; fdm; coherent multi-carrier switching; frequency conversion; tunable heterodyn-receivers

A proposed high capacity optical coherent multi-carrier (CMC) switching node for a broadband application is described. The switching of signals is performed in the optical domain by routing the carriers through broadband and selective stars, by frequency conversion and tunable heterodyn-receivers. Experimental results of a switching element are presented and a simple calculation shows, that more than 10000 broadband carriers could be processed.