Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1997-05-28
2000-11-21
Pascal, Leslie
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359177, 359110, H04B 1002, H04B 1008
Patent
active
06151148&
ABSTRACT:
As an optical signal to be transmitted, a transmitting station 100 multiplexes a monitoring/control signal SC at a different optical wavelength to the main signal SM, and the optical signal is transmitted via at least two parallel optical transmission lines 10 and 20. A receiving station 200 can process the monitoring/control signal SC by separating it from the main signal MS, which thus need not be converted to an optical signal, and the circuit scale is not increased. In addition, a trouble occurring in either system may be coped with by adopting the optical system which is transmitted via the other system.
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NEC Corporation
Pascal Leslie
Singh Dalzid
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