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Optical Engineering

Novel passive polymer waveguides integrated with electro-optically active ferroelectric liquid crystals
Author(s): David S. Hermann; Giusy Scalia; Claire S. A. Pitois; F. De Marco; K. D'have; Giancarlo Abbate; Mikael Lindgren; Anders Hult
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Paper Abstract

We report the preparation and characterization of novel isotropic polymer slab waveguides made by photochemical crosslinking, and their integration with a ferroelectric liquid crystal in an integrated electro-optic modulator. The refractive index of the passive copolymer material in the device was controlled by the copolymer composition, and good agreement between measured and calculated effective indices for the guided modes of polymer films was obtained. The active ferroelectric liquid crystal exhibited a refractive index change of ?n?0.10 upon application of an ac voltage of ±30 V, giving an electro-optic modulation of the input TE0-mode with a contrast ratio of 11:1 and only a small polarization conversion into TM output light.

Paper Details

Date Published: 1 October 2001
PDF: 11 pages
Opt. Eng. 40(10) doi: 10.1117/1.1403739
Published in: Optical Engineering Volume 40, Issue 10
Show Author Affiliations
David S. Hermann, Univ. di Napoli Federico II (Italy)
Giusy Scalia, Chalmers Univ. of Technology (Sweden)
Claire S. A. Pitois, Royal Institute of Technology (Sweden)
F. De Marco, Univ. di Napoli Federico II (Italy)
K. D'have, Chalmers Univ. of Technology (Sweden)
Giancarlo Abbate, Univ. degli Studi di Napoli Federico II (Italy)
Mikael Lindgren, Swedish Defence Research Agency (Sweden)
Anders Hult, Royal Institute of Technology (Sweden)

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