Method and apparatus for estimating chromatic dispersion in fibre bragg gratings
US6940601B2 · kind B2 · utility
3Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2001 |
| Grant date | Sep 6, 2005 |
| Priority date | — |
| Expiry date | Sep 16, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/29392
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a method and apparatus for obtaining a measure of the chromatic dispersion of a fibre bragg grating, the method comprising: disposing the grating in a reflection arm of an interferometer; inputting probe laser light into the interferometer; stepping the wavelength of the light across the reflection bandwidth of the grating, while at each step modulating the wavelength by a wavelength modulation less than the size of the respective step, and thereby producing a resulting phase modulation; and demodulating the phase modulation and determining therefrom a measure of the chromatic dispersion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.