Optical communication system and method for performing communica

Details Optical communication system and method for performing communica Optical communication system and method for performing communica

1994-12-02

1996-10-01

Boudreau, Leo

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359120, 359124, H04B 1020, H04J 1400

Patent

active

055615422

ABSTRACT:
In an optical communication system, a plurality of apparatuses are connected by a star coupler. A signal from each of the optical communication apparatuses is received by a receiving device such as a photodiode while a signal to each of the apparatuses is transmitted by a transmitting device such as a laser diode. A reference clock is supplied to the transmitting device. A clock of the signal from an optical communication apparatus is extracted to generate a phase comparison information signal of the extracted clock and the reference clock so as to supply the phase comparison information signal to the transmitting device. In the optical communication apparatus, a clock from the signal from the transmitting device is extracted, the phase comparison information signal contained in the signal from the transmitting device is extracted, and a transmit clock of the signal to be transmitted from the optical communication apparatus is controlled and oscillated such that a phase difference represented by the phase comparison signal is minimized.

REFERENCES:
patent: 4957340 (1990-09-01), Kirkby
patent: 5043981 (1991-08-01), Firoozmand et al.
patent: 5161153 (1992-11-01), Westmore
patent: 5367396 (1994-11-01), Sotom et al.
patent: 5404241 (1995-04-01), Ota
Pat. Abs. Jp., vol. 12, No. 204 (E-620) Jun. 11, 1988 (JP-A-63002445).

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