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Optical Engineering

Limitations imposed by birefringence uniformity on narrow-linewidth filters based on mode coupling
Author(s): Franck Alexis Chollet; Jean-Pierre Goedgebuer; Gadang Ramantoko
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Paper Abstract

Integrated tunable narrow-linewidth wavelength filters based on TE-TM mode conversion require a high quality processing. The discussion is based on numerical simulations of typical technology-induced defects and on a comparison with experimental results. We show that uniformity of the LiNbO3 crystal growth currently limits the linewidth to about 0.6 nm for spectral filters operating at 1.55 ?m. Moreover, such a filter would require a technology with strict conditions of uniformity over several centimeters. The discussion is focused on electro-optic filters but the results can be extended to any device based on codirectional mode coupling, such as acousto-optic filters.

Paper Details

Date Published: 1 December 2001
PDF: 8 pages
Opt. Eng. 40(12) doi: 10.1117/1.1418711
Published in: Optical Engineering Volume 40, Issue 12
Show Author Affiliations
Franck Alexis Chollet, Univ. de Franche-Comte (Singapore)
Jean-Pierre Goedgebuer, Univ. de Franche-Comte (France)
Gadang Ramantoko, Univ. de Franche-Comte (France)

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