Optical amplifier and optical switch device
US11022811B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 6, 2018 |
| Grant date | Jun 1, 2021 |
| Priority date | — |
| Expiry date | Dec 5, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/6162
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical amplifier includes a polarization splitter, a polarization rotator, first and second optical couplers, and first and second semiconductor optical amplifying devices. The TE polarized wave of light split by the polarization splitter is input to a first input port of the first optical coupler. The TM polarized wave of the split light is converted into a TE polarized wave by the polarization rotator to be input to a second input port of the first optical coupler. First light and second light output from a first output port and a second output port of the first optical coupler are amplified by the first semiconductor optical amplifying device and the second semiconductor optical amplifying device to be input to a first input port and a second input port of the second optical coupler, respectively. Third light is output from an output port of the second optical coupler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.