Method and an apparatus to detect signal failure on a per...

Details Method and an apparatus to detect signal failure on a per... Method and an apparatus to detect signal failure on a per...

2007-02-06

2007-02-06

Bovernick, Rodney (Department: 2874)

Optical waveguides

With optical coupler

Switch

C385S024000, C385S140000

Reexamination Certificate

active

10785619

ABSTRACT:
A method and an apparatus to provide optical equipment protection have been disclosed. In one embodiment, the method includes diverting a predetermined portion of each of a plurality of optical signals to a plurality of photonic detectors within a first optical network node, and detecting the plurality of signals using the plurality of photonic detectors, each of the plurality of photonic detectors being designated to detect one of the plurality of optical signals. Other embodiments have been claimed and described.

REFERENCES:
patent: 5627925 (1997-05-01), Alferness et al.
patent: 5867289 (1999-02-01), Gerstel et al.
patent: 5970201 (1999-10-01), Anthony et al.
patent: 6332055 (2001-12-01), Hatayama et al.
patent: 6801679 (2004-10-01), Koh et al.
patent: 2004/0208574 (2004-10-01), Kinoshita et al.
Rajiv Ramaswami et al., “Optical Networks, A Practical Perspective” Second Edition, Morgan Kaufmann Publishers, ISBN 1-55860-655-6, San Francisco, CA, USA. (831 pages), 2002 month unknown.

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