Long period fiber Bragg gratings written with alternate side IR laser illumination
US7946137B2 · kind B2 · utility
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36References
2Claims
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Key dates
| Filing date | May 20, 2005 |
| Grant date | May 24, 2011 |
| Priority date | — |
| Expiry date | Dec 20, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/29356
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of optical fiber manufacture involves the writing of a grating on the fiber using a laser. A first laser beam is directed on a first locality of the fiber having a circumference. A second laser beam is then directed on a second locality circumferentially displaced from the first locality. The first laser beam may be the second laser beam. In this way, a grating is formed on the fiber. The fiber may have a core and a cladding layer. The fiber may also comprise two gratings to form an interferometer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.