Optical FSK receiver having compensation for Kerr effect phase noise
US7133620B1 · kind B1 · utility
2Cited by
11References
28Claims
0Family size
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Key dates
| Filing date | Jan 18, 2006 |
| Grant date | Nov 7, 2006 |
| Priority date | — |
| Expiry date | Jan 18, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/66
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for reducing nonlinear phase noise that is induced in an optical transmission system by the interaction of optical amplifier noise and Kerr effect. The apparatus includes an intensity-scaled non-linear phase noise compensator. The phase noise compensator provides a phase noise compensated representation of a differential frequency by combining a measured differential frequency with a scaled differential signal strength estimate. The scale factor is derived from the number of spans in the transmission system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.