WDM telecommunications link with coherent detection and optical frequency comb sources
US9088371B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 27, 2012 |
| Grant date | Jul 21, 2015 |
| Priority date | — |
| Expiry date | May 27, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/002
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical data link has a transmitter and a receiver with coherent detection at the receiver and more than one optical carrier frequency. The optical carrier frequencies are generated by a frequency comb source in both the transmitter and the receiver. The frequency comb sources generate frequency combs that have frequency components and a free spectral range. The optical carrier frequencies transport more than one optical channel. Either at least one frequency component or the free spectral range of the optical comb generated at the receiver is locked to the comb generated at the transmitter by an optical phase locked loop, or an electrical phase locked loop or a feed-forward carrier recovery generates an intermediate frequency carrier reference that is routed to more than one channel to demodulate the data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.