Chirped distributed Bragg grating optical fibre filters
US5602949A · kind A · utility
22Cited by
5References
2Claims
0Family size
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Key dates
| Filing date | Feb 9, 1996 |
| Grant date | Feb 11, 1997 |
| Priority date | — |
| Expiry date | Feb 9, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3838
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A distributed Bragg grating of uniform pitch is created in a length of unstrained optical fibre which is then secured in an arcuate path to a flexible plate so as to be displaced from the neutral surface of bending of that plate. Changing the curvature of the plate imparts axial strain in the fibre which is arranged to be non-uniform as the result of the path of the fibre being arcuate. This non-uniform strain has the effect of converting the uniform grating into a chirped grating, such as may for instance be used as a dispersion equaliser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.