Fast loss of signal (LOS) detection for bidirectional optical amplifiers
US6222668A · kind A · utility
16Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 1998 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | May 8, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/07955
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A fast means of detecting that a fiber has been disconnected at one end of a bidirectional optical amplifier by monitoring for several signature effects simultaneously. Upon detection of a loss of signal, the pump laser in the corresponding direction is shut off quickly to prevent oscillation from occurring should the other end of the amplifier be subsequently disconnected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.