Optical signal transmission system, particularly optical cable t

Details Optical signal transmission system, particularly optical cable t Optical signal transmission system, particularly optical cable t

1992-03-20

1994-03-01

Chilcot, Jr., Richard E.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

319110, 319114, 319173, 319341, 372 6, H04B 1000, H04B 1024

Patent

active

052913260

ABSTRACT:
A system for optically transmitting a useful signal (S.sub.1) from a transmitter (1) over a transmission link which includes either an optical waveguide (3) or a fiber-optic network coupled to a receiver (2). The transmitter (1) transmits the useful signal (S.sub.1) and an auxiliary signal (S.sub.2) over the transmission link toward the receiver (2) at different wavelengths. Circuits (4a, 4b, 5, 6, 7) at a desired point in the transmission link and analyze the auxiliary signal (S.sub.2) and provide a response signal (S.sub.3) containing information for monitoring the useful signal. The transmitter (1) receives the response signal (S.sub.3) and controls the further transmission of the useful signal (S.sub.1) and the auxiliary signal (S.sub.2) in accordance with the information in the response signal (S.sub.3).

REFERENCES:
patent: 4994675 (1991-02-01), Levin et al.
patent: 5058103 (1991-10-01), Shimizu
patent: 5162936 (1992-11-01), Taga et al.
"B-ISDN", G. H. Doman, Journal of Lightwave Technology, vol. 6 No. 11, Nov. 1988, pp. 1720-1727.
Patent Abstracts of Japan vol. 13, No. 280 (E-779( 1989 J JP-A-10 65 938 (Nippon) *Zusammenfassung*.
Patent Abstract of Japan, vol. 12, No. 337 (E-657) 1988 & JP-A-63 099 633 (NEC) *Zusammenfassung*.

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