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Proceedings Paper

Polarisation-Insensitive Optical Fibre Phase Modulator
Author(s): Darran Kreit; Robert C Youngquist; Ian P Giles
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Paper Abstract

An acoustic fibre phase modulator, operating up to a few MHz, is described which employs a piezoelectric plate in a squeezing action. A novel construction using two machined brass v-grooves results in a much reduced sensitivity to optical polarisation and the optimum groove angle is independent of the level of friction on the walls of each groove. A normalised birefringence of 0.04 was achieved at 1.5MHz, with a modulation efficiency of approximately 0.23 rad/Vrms., for a 2cm long device.

Paper Details

Date Published: 14 October 1987
PDF: 7 pages
Proc. SPIE 0798, Fiber Optic Sensors II, (14 October 1987); doi: 10.1117/12.941138
Show Author Affiliations
Darran Kreit, University College (United Kingdom)
Robert C Youngquist, University College (United Kingdom)
Ian P Giles, University College (United Kingdom)

Published in SPIE Proceedings Vol. 0798:
Fiber Optic Sensors II
Anna Maria Verga Scheggi, Editor(s)

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