Balanced coherent receiver
US4718121A · kind A · utility
38Cited by
3References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 6, 1986 |
| Grant date | Jan 5, 1988 |
| Priority date | — |
| Expiry date | Mar 6, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/63
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a coherent optical receiver using balanced photodetectors, local oscillator intensity fluctuations are nulled out by cross-correlating them with an imperfectly balance output to derive an error signal used in a feedback loop to optimize the balance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.