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Direct optical observation of walls and disclination effects in active photonic devices

Liquid crystal tunable Bragg Gratings defined in planar substrates via a laser patterning technique exhibit complex wavelength tuning. This tuning displays threshold points and hysteresis. These tuning features are shown to be a manifestation of physical processes occurring in the confined geometry...

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Main Authors:	Snow, B.D., Adikan, Faisal Rafiq Mahamd, Gates, J.C., Gawith, C.B.E., Dyadyusha, A., Major, H.E., Kaczmarek, M., Smith, P.G.R.
格式:	Article
出版:	2009
主題:	TK Electrical engineering. Electronics Nuclear engineering
在線閱讀:	http://eprints.um.edu.my/4674/
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id	my.um.eprints.4674
record_format	eprints
spelling	my.um.eprints.46742018-10-11T01:45:50Z http://eprints.um.edu.my/4674/ Direct optical observation of walls and disclination effects in active photonic devices Snow, B.D. Adikan, Faisal Rafiq Mahamd Gates, J.C. Gawith, C.B.E. Dyadyusha, A. Major, H.E. Kaczmarek, M. Smith, P.G.R. TK Electrical engineering. Electronics Nuclear engineering Liquid crystal tunable Bragg Gratings defined in planar substrates via a laser patterning technique exhibit complex wavelength tuning. This tuning displays threshold points and hysteresis. These tuning features are shown to be a manifestation of physical processes occurring in the confined geometry of our tunable devices. Such physical processes include the formation and removal of line disclinations and an associated wall. We discuss the effect of walls in the liquid crystal with regards to voltage tuning characteristics and whether they may allow faster wavelength tuning. 2009 Article PeerReviewed Snow, B.D. and Adikan, Faisal Rafiq Mahamd and Gates, J.C. and Gawith, C.B.E. and Dyadyusha, A. and Major, H.E. and Kaczmarek, M. and Smith, P.G.R. (2009) Direct optical observation of walls and disclination effects in active photonic devices. Molecular Crystals and Liquid Crystals, 502. pp. 178-184. ISSN 1542-1406
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	TK Electrical engineering. Electronics Nuclear engineering
spellingShingle	TK Electrical engineering. Electronics Nuclear engineering Snow, B.D. Adikan, Faisal Rafiq Mahamd Gates, J.C. Gawith, C.B.E. Dyadyusha, A. Major, H.E. Kaczmarek, M. Smith, P.G.R. Direct optical observation of walls and disclination effects in active photonic devices
description	Liquid crystal tunable Bragg Gratings defined in planar substrates via a laser patterning technique exhibit complex wavelength tuning. This tuning displays threshold points and hysteresis. These tuning features are shown to be a manifestation of physical processes occurring in the confined geometry of our tunable devices. Such physical processes include the formation and removal of line disclinations and an associated wall. We discuss the effect of walls in the liquid crystal with regards to voltage tuning characteristics and whether they may allow faster wavelength tuning.
format	Article
author	Snow, B.D. Adikan, Faisal Rafiq Mahamd Gates, J.C. Gawith, C.B.E. Dyadyusha, A. Major, H.E. Kaczmarek, M. Smith, P.G.R.
author_facet	Snow, B.D. Adikan, Faisal Rafiq Mahamd Gates, J.C. Gawith, C.B.E. Dyadyusha, A. Major, H.E. Kaczmarek, M. Smith, P.G.R.
author_sort	Snow, B.D.
title	Direct optical observation of walls and disclination effects in active photonic devices
title_short	Direct optical observation of walls and disclination effects in active photonic devices
title_full	Direct optical observation of walls and disclination effects in active photonic devices
title_fullStr	Direct optical observation of walls and disclination effects in active photonic devices
title_full_unstemmed	Direct optical observation of walls and disclination effects in active photonic devices
title_sort	direct optical observation of walls and disclination effects in active photonic devices
publishDate	2009
url	http://eprints.um.edu.my/4674/
_version_	1643687391272108032
score	13.251813

Direct optical observation of walls and disclination effects in active photonic devices

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