Wavelength-multiplexed optical communication system and optical

Details Wavelength-multiplexed optical communication system and optical Wavelength-multiplexed optical communication system and optical

1994-05-11

1995-03-07

Chilcot, Jr., Richard E.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359161, 359176, 359174, 359115, 359124, 359349, 359337, H04J 1402, H04B 1002, H01S 300

Patent

active

053963601

ABSTRACT:
An optical communication system comprises: a plurality of optical communication apparatus for communicating signals by using a plurality of communicating lights having different wavelengths; an optical transmitter for transmitting a controlling light having a different wavelength than any of the plurality of wavelengths; an optical transmission line for interconnecting the optical transmitter and the optical communication apparatus to transmit the communicating lights and the controlling light; an optical amplifier for amplifying the communicating lights and the controlling light transmitted over the optical transmission line; and control circuit for discriminating the controlling light amplified by the optical amplifier from the communicating lights and controlling a gain of the optical amplifier to keep a light intensity of the controlling light at a constant level.

REFERENCES:
patent: 3887876 (1975-06-01), Zeidler
patent: 4680769 (1987-07-01), Miller
patent: 4786129 (1988-11-01), Webb
patent: 4797879 (1989-01-01), Habbab et al.
patent: 4952017 (1990-08-01), Henry et al.
patent: 4958354 (1990-09-01), Urakami et al.
patent: 5003268 (1991-03-01), Tsuchiya
patent: 5117196 (1992-03-01), Epworth et al.
"Passive Optical Subscriber Loops With Multiaccess" by Yih-Kang Maurice Lin et al., Journal of Lightwave Technology, vol. 7, No. 11, Nov. 1989, No. 11, New York USA, pp. 1769-1777.

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