Periodic NLC Phase Grating for Tuneable PBG Applications

Ghannam, R. and Georgiou, A. (2008) Periodic NLC Phase Grating for Tuneable PBG Applications. In: SPIE Photonics Europe 2008, Strasbourg, France, 7-11 Apr 2008, 69891X. (doi: 10.1117/12.780784)

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.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Ghannam, Professor Rami
• Authors: Ghannam, R., and Georgiou, A.
• College/School: College of Science and Engineering > School of Engineering
• ISSN: 0277-786X