Method and apparatus for maintaining a pre-determined ratio of a pilot tone power and a mean optical output power of an optical signal
US7110682B2 · kind B2 · utility
1Cited by
14References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2005 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Aug 8, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/075
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for maintaining a pre-determined ratio of a pilot tone power and a total mean optical power of an optical signal are provided. One apparatus includes an optical source coupled to provide an optical signal in response to a DC bias and an AC bias corresponding to a pilot tone signal. A processor is coupled to compute each of an AC component and a DC component of the optical signal from the same digitally sampled signal. A feedback control is coupled to vary at least one of the DC bias and the AC bias in accordance with a difference between a pre-determined value and a ratio of the AC and DC components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.