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Proceedings Paper

Periodic NLC phase grating for tuneable PBG applications
Author(s): R. Ghannam; A. Georgiou
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Paper Abstract

The advent of nanolithographic techniques has enabled electrically-driven liquid crystal devices to be addressed using nanoscale electrodes. Tiny periodic phase grating structures, which can now be realized, may find applications in optical communications and displays devices. Introducing optical discontinuities in the nematic liquid crystal (NLC) material will enable these structures to act as photonic band gap devices. This paper addresses the properties of band gap structures formed by NLC discontinuities using a 10micron thick homeotropically aligned NLC. It demonstrates how the position of the optical discontinuities may be altered by a symmetric voltage pattern and thus tune the photonic band gap.

Paper Details

Date Published: 21 April 2008
PDF: 8 pages
Proc. SPIE 6989, Photonic Crystal Materials and Devices VIII, 69891X (21 April 2008); doi: 10.1117/12.780784
Show Author Affiliations
R. Ghannam, American Univ. in Cairo (Egypt)
A. Georgiou, Cambridge Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 6989:
Photonic Crystal Materials and Devices VIII
Richard M. De La Rue; Ceferino López; Michele Midrio; Pierre Viktorovitch, Editor(s)

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