Automatic gain control in a coherent optical receiver
US7936999B1 · kind B1 · utility
42Cited by
19References
24Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 20, 2006 |
| Grant date | May 3, 2011 |
| Priority date | — |
| Expiry date | Aug 29, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0004
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a coherent optical receiver, a method of at least partially compensating Polarization Dependent Loss (PDL) of an optical signal received through an optical communications system. A respective multi-bit sample stream of each one of a pair of orthogonal received polarizations of the optical signal is tapped, and used to derive a respective metric value indicative of a quality of each multi-bit sample stream. A gain of an analog front end of the coherent optical receiver is adjusted based on the derived metric values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.