Method and apparatus for automatically identifying system faults

Details Method and apparatus for automatically identifying system faults Method and apparatus for automatically identifying system faults

1999-04-02

2000-10-17

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359161, 359173, 359177, H04B 1008

Patent

active

061340324

ABSTRACT:
A method is provided for automatically identifying a system fault in an optical communication system that includes first and second transmission paths for supporting bidirectional communication. In accordance with the method, measurements are made of a plurality of optical gain values respectively generated by a plurality of optical amplifier units disposed in respective loop back paths extending through the first and second transmission paths of the optical communication system. A gain signature is obtained by subtracting a plurality of baseline values from the plurality of optical gain values. Directional state changes are located along the gain signature to identify a plurality of directional states. Each of the directional states is assigned a pre-established state such that the gain signature is represented by a sequence of pre-established states. The sequence of pre-established states of said gain signature is compared to a plurality of predetermined sequences of pre-established states. The predetermined sequences each correspond to a known fault condition. At least one exact match is identified between the sequence of pre-established states of the gain signature and the pre-determined sequences. The matching predetermined sequence identifies the system fault that gives rise to the gain signature.

REFERENCES:
patent: 5343320 (1994-08-01), Anderson
patent: 5969833 (1999-10-01), Jensen

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