System for the optical switching of frequency multiplexed signals
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United States of America Patent
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Feb 23, 1993
Grant Date -
N/A
app pub date -
Jul 15, 1991
filing date -
Jul 17, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The system disclosed includes a light source (12) able to emit an intense, coherent, monochromatic beam, called the control beam, whose frequency is equal to the center optical frequency of one of several frequency multiplexed signals, which has been selected, an optical coupler (14) for coupling the signals and the control beam and an optical switching device (16) having an active material with a non-linear optical response, whose passband is narrower than the intervals separating the frequency band occupied by the selected siganl. The device receives the light from the optical coupler and supplies a beam reproducing the information of the selected signal. The invention can be used in telecommunications.
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