Polarization multiplexed optical transmitter circuit and polarization multi/demultiplexed optical transceiver circuit
US11493776B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 2019 |
| Grant date | Nov 8, 2022 |
| Priority date | — |
| Expiry date | Dec 24, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/564
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A polarization multiplex optical transmitter circuit can provide compensation for the transmission PDL while reducing decrease in transmission power. The polarization multiplex optical transmitter circuit includes a beam divider circuit configured to divide light outputted from a light source, optical phase shifters provided in at least one of two waveguides connected to output terminals of the beam divider circuit, a light wave synthesizer circuit connected to the two waveguides, first and second optical transmitters coupled to two output terminals of the light wave synthesizer circuit, a polarization multiplexer configured to synthesize two output polarized waves from the first and second optical transmitters, and a polarization rotator provided between the first and second optical transmitters and the polarization multiplexer and coupled to at least one of the first and second optical transmitters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.