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Proceedings Paper

Fiber optic intensity modulator using multimode electro-optic polymeric overlay
Author(s): Gordon Fawcett; Walter Johnstone; Ivan Andonovic
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Paper Abstract

A fiber-optic intensity modulator was constructed based on coupling from a side polished single-mode fiber to a high index multi-moded electro-optic polymer overlay. Resonant coupling from the fiber to the film is controlled by applying an electric field to the polymer film causing modulation of fiber throughput intensity. The polymers used were cross linkable azo dye based species exhibiting a pockels co-efficient of up to 8 picometer/volt. Extinction ratios greater than 15 dB with insertion losses less than 0.6 dB were achieved. The effects of electrode thickness, overlay index and thickness on device performance are addressed. Wavelength selective filters were also fabricated using polymers giving linewidths of 7 nm (FWHM).

Paper Details

Date Published: 19 February 1993
PDF: 5 pages
Proc. SPIE 1792, Components for Fiber Optic Applications VII, (19 February 1993); doi: 10.1117/12.141192
Show Author Affiliations
Gordon Fawcett, Univ. of Strathclyde (United Kingdom)
Walter Johnstone, Univ. of Strathclyde (United Kingdom)
Ivan Andonovic, Univ. of Strathclyde (United Kingdom)

Published in SPIE Proceedings Vol. 1792:
Components for Fiber Optic Applications VII
Paul M. Kopera, Editor(s)

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