Line defects and temperature effects in liquid crystal tunable planar Bragg gratings

Snow, B.D. and Adikan, Faisal Rafiq Mahamd and Gates, J.C. and Gawith, C.B.E. and Dyadyusha, A. and Kaczmarek, M. and Smith, P.G.R. (2007) Line defects and temperature effects in liquid crystal tunable planar Bragg gratings. Optics Express, 15 (25). pp. 17129-17135. ISSN 1094-4087

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Abstract

Liquid crystal tunable planar Bragg Gratings produced by Direct UV Writing are capable of wavelength tuning of over 100GHz. However, such devices exhibit non-linear tuning curves with threshold points and hysteresis. We show that these effects are due to the formation of disclination structures in the liquid crystal and discuss the role of electrode defects and sample temperature on wavelength tuning. (C) 2007 Optical Society of America.

Item Type: Article
Additional Information: Snow, B. D. Adikan, F. R. M. Gates, J. C. Gawith, C. B. E. Dyadyusha, A. Kaczmarek, M. Smith, P. G. R.
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Mr. Mohammed Salim Abd Rahman
Date Deposited: 07 Feb 2013 00:26
Last Modified: 11 Oct 2018 01:29
URI: http://eprints.um.edu.my/id/eprint/4681

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