Pilot-aided feedforward data recovery in optical coherent communications
US9768885B2 · kind B2 · utility
5Cited by
1References
20Claims
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Key dates
| Filing date | Sep 10, 2015 |
| Grant date | Sep 19, 2017 |
| Priority date | — |
| Expiry date | Sep 17, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0075
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and a system for pilot-aided feedforward data recovery are provided. The method and system include a receiver including a strong local oscillator operating in a free running mode independent of a signal light source. The phase relation between the signal light source and the local oscillator source is determined based on quadrature measurements on pilot pulses from the signal light source. Using the above phase relation, information encoded in an incoming signal can be recovered, optionally for use in communication with classical coherent communication protocols and quantum communication protocols.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.