Optical transmitters and receivers using polarization multiplexing
US10116410B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2015 |
| Grant date | Oct 30, 2018 |
| Priority date | — |
| Expiry date | Sep 18, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/50
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Disclosed is a transmitter that modulates a single-wavelength laser signal with multi-level amplitude modulation on each of two polarizations, with an additional multi-level inter-polarization phase modulation. In an experimental setup, four-level amplitude modulation is used on each of the two polarizations, and four-phase inter-polarization phase modulation is used. Other numbers of levels may be used, in variations of the disclosed techniques and apparatus. Also disclosed is a corresponding receiver, which includes a DSP algorithm that recovers, simultaneously, the information on the multiple intensities imprinted by the transmitter on each polarization and the information from the multi-level inter-polarization phase modulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.