Loss point detecting method and distributed raman amplifier applying the same
US7031049B2 · kind B2 · utility
9Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2003 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | May 12, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Power of scattered light separated from an optical transmission path is monitored, part of the excitation light is separated and power thereof is monitored, power of reflected light which passes in a direction opposite to a direction in which signal light passes through the optical transmission path is monitored, and, when monitored power of an excitation light reaches a predetermined determination value, whether or not any loss point occurs is determined, based on a ratio between the monitored power of the scattered light and the monitored power of the reflected light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.