Fabrication of chirped fiber bragg gratings of any desired bandwidth using frequency modulation
US6728444B2 · kind B2 · utility
6Cited by
12References
18Claims
0Family size
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Key dates
| Filing date | Jan 31, 2002 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Aug 15, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/0057
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for manufacturing an optical waveguide refractive index grating having a desired grating pitch &Lgr;. The method includes the step of providing a photosensitive waveguide and a writing beam of actinic radiation, the writing beam having an intensity. The waveguide is translated relative to the writing beam at a velocity v(t). The intensity of the writing beam is modulated as a function of time at a frequency f(t), wherein The step of modulating the intensity of the writing beam as a function of time f(t) at a frequency f(t) including the step of varying &Lgr;.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.