Periodic NLC phase grating for tuneable PBG applications

R. Ghannam; A. Georgiou

doi:10.1117/12.780784

21 April 2008 Periodic NLC phase grating for tuneable PBG applications

R. Ghannam, A. Georgiou

Proceedings Volume 6989, Photonic Crystal Materials and Devices VIII; 69891X (2008) https://doi.org/10.1117/12.780784
Event: SPIE Photonics Europe, 2008, Strasbourg, France

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.

Citation Download Citation

R. Ghannam and A. Georgiou "Periodic NLC phase grating for tuneable PBG applications", Proc. SPIE 6989, Photonic Crystal Materials and Devices VIII, 69891X (21 April 2008); https://doi.org/10.1117/12.780784

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