Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1997-01-06
1998-08-18
Negash, Kinfe-Michael
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359133, 359173, H04J 1402
Patent
active
057965021
ABSTRACT:
An optical fiber communication system has an optical fiber extending along a communication path between spaced stations. The stations include transmitting and receiving units, or combined transmitter and receiver units at each station. Each transmitter unit is designed to produce information signals on one or more different topics, and is associated with one light source for each topic of information assigned to that station. The light sources produce output light signals modulated by the information signals, and these light signals are coupled to the optical fiber. The light sources are of different frequencies, and each topic of information to be communicated is assigned to a predetermined light frequency, so that all light signals at a certain frequency carry only information on the one topic assigned to that frequency. Each receiver unit includes a filter for filtering out signals at one or more of the frequencies and a decoder for extracting the information from the filtered signal.
REFERENCES:
patent: 5224183 (1993-06-01), Dugan
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