Optical source, communications network optical apparatus and method of providing an optical signal
US10014943B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2014 |
| Grant date | Jul 3, 2018 |
| Priority date | — |
| Expiry date | Mar 27, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/503
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical source (10) comprising: a first laser (12) arranged to generate a first optical signal (14) having a first state of polarization and a first optical frequency; a second laser (16) arranged to generate a second optical signal (18, 48, 78) having a second state of polarization, substantially orthogonal to the first state of polarization, and having a second optical frequency, different to the first optical frequency by a preselected frequency difference, Δν; a polarization beam coupler (20) arranged to combine the first optical signal and the second optical signal into a composite optical signal comprising both the first optical signal and the second optical signal having said substantially orthogonal states of polarization; and an output (22) arranged to output the composite optical signal (24).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.