Narrow bandwidth reflectors for reducing stimulated Brillouin scattering in optical cavities
US9252559B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2012 |
| Grant date | Feb 2, 2016 |
| Priority date | — |
| Expiry date | Apr 13, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/29356
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical-fiber filter system to narrow a linewidth and to reduce noise fluctuations of an optical beam is provided. The optical-fiber filter system includes an optical fiber having a first end-face and an opposing second end-face, the first end-face and the second end-face setting a fiber length; a fiber Bragg grating having a first reflectivity positioned at the first end-face; and a reflector having a second reflectivity positioned at the second end-face. When the optical beam at a first frequency is coupled from a laser into one of the first end-face or the second end-face, a resonant cavity is established at the first frequency between the fiber Bragg grating and the reflector while Brillouin scattered light shifted from the first frequency within the optical fiber is transmitted through the fiber Bragg grating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.