Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1994-11-16
1995-07-18
Boudreau, Leo H.
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359110, 370 16, H04B 1008, H04J 1400
Patent
active
054346916
ABSTRACT:
A communications system includes a plurality of optical transmission lines in an active system and an optical transmission line in a protection system, and transmitter/receiver devices connected to respective ends of the optical transmission lines. The transmitter/receiver devices respectively include a first interface unit for establishing a first interface with signal transmission lines, a second interface unit for establishing a second interface with one of the optical transmission lines, a first multiplexer/demultiplexer unit for executing a first multiplexing and demultiplexing operation, and a second multiplexer/demultiplexer unit for executing a second multiplexing and demultiplexing operation. Further, the transmitter/receiver devices respectively include a switching unit, which is provided between the first and second multiplexer/demultiplexer units, for selectively coupling the first multiplexer/demultiplexer units in the active system with the first multiplexer/demultiplexer units in the protection system by means of optical fiber cables.
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Bacara Rafael
Boudreau Leo H.
Fujitsu Limited
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