Low reflectivity fiber bragg grating with rectangular reflection function
US5668901A · kind A · utility
15Cited by
17References
23Claims
0Family size
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Key dates
| Filing date | Feb 14, 1996 |
| Grant date | Sep 16, 1997 |
| Priority date | — |
| Expiry date | Feb 14, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02133
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Fiber Bragg gratings of low reflectivity are given a squared reflectivity function in the form of a tophat configuration having a flat top and lacking undesirable side lobes. Such a reflectivity function for a fiber Bragg grating is achieved by interfering a diffracted beam with a plane wavefront beam so as to impose a sinc function on the resulting interference pattern that imprints the grating on an optical fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.