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Coherent optical multicarrier systems

: Bachus, E.J.; Braun, R.P.; Caspar, C.; Foisel, H.M.; Grossmann, E.; Strebel, B.; Westphal, F.J.


Journal of Lightwave Technology 7 (1989), No.2, pp.375-84
ISSN: 0733-8724
Journal Article
Fraunhofer HHI ()
multiplexing equipment; optical communication equipment; optical fibres; optical links; subscriber loops; switching systems; optical coherent multicarrier systems; highly selective tunable optical heterodyne receivers; transmission; switching; coherent bidirectional subscriber lines; ten-channel distribution system; switching setup; computer-controlled receiver tuning; carrier-frequency stabilization; multiplexing; demultiplexing; multicarrier transmission

Optical coherent multicarrier systems with highly selective tunable optical heterodyne receivers can be used for transmission and switching of broadband signals. Some technical solutions for coherent bidirectional subscriber lines, a ten-channel distribution system, and a switching setup with computer-controlled receiver tuning are presented. The laboratory experiments, including carrier-frequency stabilization, multiplexing, and demultiplexing, as well as the fiber components used, are described. The influence of fiber nonlinearities on multicarrier transmission is considered.