EXTENDED-RANGE, LOW-COHERENCE DUAL-WAVELENGTH INTERFEROMETRY USING A SUPERFLUORESCENT FIBER SOURCE AND CHIRPED FIBER BRAGG GRATINGS

Authors
BRADY GP KALLI K WEBB DJ JACKSON DA ZHANG L BENNION I
Citation
Gp. Brady et al., EXTENDED-RANGE, LOW-COHERENCE DUAL-WAVELENGTH INTERFEROMETRY USING A SUPERFLUORESCENT FIBER SOURCE AND CHIRPED FIBER BRAGG GRATINGS, Optics communications, 134(1-6), 1997, pp. 341-348
Citations number
6
Categorie Soggetti
Optics
Journal title
Optics communications → ACNP
ISSN journal
00304018
Volume
134
Issue
1-6
Year of publication
1997
Pages
341 - 348
Database
ISI
SICI code
0030-4018(1997)134:1-6<341:ELDIUA>2.0.ZU;2-4
Abstract
We describe an all-fibre, passive scheme for making extended range int erferometric measurements based on the dual wavelength technique, The coherence tuned interferometer network is illuminated with a single su perfluorescent fibre source at 1.55 mu m and the two wavelengths are s ynthesised at the output by means of chirped fibre Bragg gratings. We demonstrate an unambiguous sensing range of 270 mu m, with a dynamic r ange of 2.7 x 10(5).