Method and apparatus for automatically identifying system faults in an optical communications system from repeater loop gain signatures
US6134032A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1999 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Apr 2, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/0797
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
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-…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.