MEASUREMENT OF THE REFRACTIVE-INDEX PROFILE OF PLANAR WAVE-GUIDES BY THE USE OF A DOUBLE LLOYDS INTERFEROMETER

Authors
RAMADAN WA FAZIO E BERTOLOTTI M
Citation
Wa. Ramadan et al., MEASUREMENT OF THE REFRACTIVE-INDEX PROFILE OF PLANAR WAVE-GUIDES BY THE USE OF A DOUBLE LLOYDS INTERFEROMETER, Applied optics, 35(31), 1996, pp. 6173-6178
Citations number
13
Categorie Soggetti
Optics
Journal title
Applied optics → ACNP
ISSN journal
00036935
Volume
35
Issue
31
Year of publication
1996
Pages
6173 - 6178
Database
ISI
SICI code
0003-6935(1996)35:31<6173:MOTRPO>2.0.ZU;2-1
Abstract
We present a nondestructive experimental method to measure monotonical ly varying refractive-index profiles of planar waveguides. The techniq ue is a modification of the Lloyd's mirage setup proposed by Allman et al. [Appl. Opt. 33, 1806 (1994)] in order to have a reference phase d istribution for the interference pattern. The theoretical calculations have been implemented to account for multiple reflections inside the sample. An application of the method to ion-exchanged glass waveguides is reported. (C) 1996 Optical Society of America