Optical source, communications network optical apparatus and method of providing an optical signal
US10461863B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2018 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | Apr 25, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/503
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical source comprises a first laser arranged to generate a first optical signal having a first state of polarization (SOP) and a first optical frequency; a second laser arranged to generate a second optical signal having a second SOP, substantially orthogonal to the first SOP, and having a second optical frequency, different from the first optical frequency by a preselected frequency difference; a polarisation beam coupler 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 SOPs; and an output arranged to output the composite optical signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.