Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1996-08-07
1999-09-21
Pascal, Leslie
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359133, H04J 1402
Patent
active
059561661
ABSTRACT:
At a transmission section, different frequencies ranging from f1 to fn corresponding to n channels are generated as channel information, respectively. The signal light (.lambda.1 to .lambda.n) of each channel is modulated at the corresponding frequency (f1 to fn) and multiplexed. At a reception section, in case of selecting the channel of the signal light .lambda.1, the wavelength selection characteristic of a filter is sweep controlled for detecting the frequency f1. The wavelength selection characteristic at the f1 detection is kept as the wavelength selection characteristic of the filter.
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Michishita Yukio
Ogata Takaaki
NEC Corporation
Pascal Leslie
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