Asynchronous optical communication system

Details Asynchronous optical communication system Asynchronous optical communication system

1990-09-25

1992-04-14

Coles, Sr., Edward L.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359117, 370 50, H04J 1400

Patent

active

051052920

ABSTRACT:
An asynchronous time-division multiplex optical communication system comprises: a switching network, user transmitter circuits, user receiver circuits and broadcast servers connected by optical lines to the switching network. The switching network comprises an optical spectro-time-division switching network, a control processor unit and a clock unit. The spectro-time-division switching network is connected optically to the user transmitter circuits, to the user receiver circuits, to the broadcast servers and to control transmitter, signalling transmitter, control receiver and signalling receiver circuits of the control processor unit. The clock unit is connected by a first line to the switching network and by a second line to the control processor unit which is connected by a control bus to the spectro-time-division switching network. The system uses conjointly a first set of optical frequencies for transmission and a second set optical frequencies for switching.

REFERENCES:
patent: 4873681 (1989-10-01), Arthurs
"Demonstration of Fast Wavelength Tuning for a High Performance Packet Switch", M. S. Goodman et al.; Bell Communications Research Conference on optical communications, 1988.
Patent abstracts of Japan, vol. 7, No. 158 (E-186)[1303], Jul. 12, 1983; & JP-A-58 66 488 (Fujitsu K.K.) Apr. 20, 1983.
Patent Abstracts of Japan, vol. 10, No. 8 (E-373)[2065], Jan. 14, 1986; & JP-A-60 172 841 (Nippon Denshin Denwa Kosha) Sep. 6, 1985.
Patent Abstracts of Japan, vol. 10, No. 370 (E-463)[2427], Dec. 10, 1986; & JP-A-61 395 (NEC Corp.) Jul. 25, 1986.

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