Double-pass optical fibre amplifier and optical-device architectures
US12282215B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2020 |
| Grant date | Apr 22, 2025 |
| Priority date | — |
| Expiry date | May 5, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device including an acousto-optic modulator (AOM), a laser, an upstream optical fibre extending between the laser and the AOM, a downstream optical fibre located downstream of the AOM and a reflector connected to the fibre downstream of the AOM. The optical device including the upstream fibre is a polarisation-maintaining optical fibre, and/or the downstream fibre is arranged so that a transit time of the optical beam through said downstream fibre from the AOM to the reflecting means is nonzero and shorter than or equal to half an open duration of the AOM, and/or the AOM includes a crystal in which the entrance/exit faces are planar and are at a nonzero angle to each other, and/or at least one of the two entrance/exit faces is at a nonzero angle to a direction of propagation of the acoustic wave in the crystal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.