Early warning failure detection for a lasing semiconductor optical amplifier
US6707600B1 · kind B1 · utility
35Cited by
4References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2001 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Mar 23, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/5072
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Early warning failure detetection is provided for an optical amplifier. The optical amplifier is based on a lasing semiconductor optical amplifier, which generates a ballast laser signal in addition to the amplified optical signal. The ballast laser signal exhibits a wavelength shift before failure and this wavelength shift is used as the basis for an early warning of future failure of the amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.