Optical amplifiers with liquid crystal device
US9917412B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2016 |
| Grant date | Mar 13, 2018 |
| Priority date | — |
| Expiry date | Nov 4, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical amplifier may comprise a first gain stage and a second gain stage. Each of the first and second gain stages may comprise a laser pump and an active fiber. A liquid crystal device may be coupled between an output of the first gain stage and an input of the second gain stage. A control unit may be coupled to the first and second gain stages, liquid crystal device and configured to control the first and second gain stages, and the liquid crystal device to provide a switchable gain. Light may pass through the first and second gain stages and be amplified by the first and second gain stages. The light amplified by the first gain stage may pass through the liquid crystal device and may be filtered by the liquid crystal device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.