Surveillance system of a multi-wavelength ring network

Details Surveillance system of a multi-wavelength ring network Surveillance system of a multi-wavelength ring network

1997-02-20

1999-08-24

Chan, Jason

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359119, 359124, 359125, 359110, 359123, H04J 1402

Patent

active

059431482

ABSTRACT:
This network, intended for the transmission of information in optical form, wavelength multiplexed, comprises nodes (N1, N2) linked to each other by at least one optical fiber (F1), at least one wavelength being treated in each node. The system comprises unit (OF1, OF2, OS1, OS2) for superimposing on the information, for at least one wavelength per node, a surveillance signal whose frequency is outside the transmission band and, in each node, a surveillance circuit (CS1, CS2) for sampling at least one part of the surveillance signals, elaborating surveillance information in function of this part and sending this information to the processing units of the network. Application in optical telecommunications.

REFERENCES:
patent: 5150243 (1992-09-01), Suzuki
patent: 5265096 (1993-11-01), Parruck
patent: 5513029 (1996-04-01), Roberts
patent: 5548431 (1996-08-01), Shine et al.
patent: 5760934 (1998-06-01), Sutter et al.
patent: 5796501 (1998-08-01), Sotom et al.
Ant Nachrichtentechnische Berichte, Dec. 1986, pp. 95-112, Host Kleinmann E.A., "Optische Betriebsysteme fur den Weitverkehr".
U.S. Ser. No. 08/643549, filed May 8, 1996, "Ring Network for Transmitting Wavelength-Multiplexed Information", Alain Sutter et al.

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