Optical fiber filter of wideband deleterious light and uses thereof
US10663654B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2019 |
| Grant date | May 26, 2020 |
| Priority date | — |
| Expiry date | Jul 18, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02204
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Optical fiber filters and uses thereof are presented. In typical implementations, there is provided a FBG taking deleterious light out of a fiber core without reflecting it into the fiber core. It also allows the unhindered transmission of useful light at a wavelength outside of the spectral band covered by the deleterious light. The filter couples the incoming deleterious light to cladding modes propagating in the opposite direction without coupling the incoming useful light to core or cladding modes propagating in the opposite direction. The filter may for example be useful as a Raman or ASE filter in a laser cavity of other optical devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.