Three-dimensional refractive index profile of a GRIN optical waveguide using multiple beam interference fringes

Authors
Barakat, N El-Hennawi, HA El-Ghafar, EA El-Ghandoor, H Hassan, R El-Diasty, F
Citation
N. Barakat et al., Three-dimensional refractive index profile of a GRIN optical waveguide using multiple beam interference fringes, OPT COMMUN, 191(1-2), 2001, pp. 39-47
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
OPTICS COMMUNICATIONS
ISSN journal
00304018 → ACNP
Volume
191
Issue
1-2
Year of publication
2001
Pages
39 - 47
Database
ISI
SICI code
0030-4018(20010501)191:1-2<39:TRIPOA>2.0.ZU;2-A
Abstract
Multiple beam Fizeau fringes across a GRIN fiber immersed in a silvered liq uid wedge have been used to obtain a three-dimensional refractive index pro file of optical fiber core. An image processing system has been used to ana lyze the fringe shape across the fiber cross-section. A simple mathematical approach has been applied utilizing the resulting experimental data to est imate the fiber three-dimensional refractive index profile. The tomographic back projection technique has been applied. (C) 2001 Published by Elsevier Science B.V.