Tunable coherent optical receiver and method
US9444553B2 · kind B2 · utility
5Cited by
17References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 3, 2013 |
| Grant date | Sep 13, 2016 |
| Priority date | — |
| Expiry date | Jul 19, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/075
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention provides a tunable coherent optical receiver and a related method wherein the receiver uses low-frequency trace-tone modulation of optical WDM channels at transmission as channel IDs in order to detect which optical channels are present in the received optical WDM signal. The receiver than discriminates between the thereby detected optical channels by tuning a local oscillator to one of the received optical channels as determined based on the presence of the low-frequency tones in the received optical signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.