Apodized fiber bragg grating and improved phase mask, method and system for making the same
US7068884B2 · kind B2 · utility
4Cited by
3References
18Claims
0Family size
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Key dates
| Filing date | Feb 27, 2004 |
| Grant date | Jun 27, 2006 |
| Priority date | — |
| Expiry date | Jun 4, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02138
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apodized fiber Bragg grating, and a phase mask, method and system for making such a grating are disclosed. The refractive index profile of the grating has a periodic apodization phase component which is designed so that the grating fringes reflecting light in a spectral region of interest are apodized, by generating spurious reflection features outside of this spectral region of interest. Apodization is therefore provided through a phase variation of the grating as opposed to an amplitude variation. The phase component is added to the profile of the phase mask grating corrugations to obtain the phase-apodized grating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.