Line defects and temperature effects in liquid crystal tunable planar Bragg gratings
Snow, B.D., Adikan, F.R.M., Gates, J.C., Gawith, C.B.E., Dyadyusha, A., Kaczmarek, M. and Smith, P.G.R. (2007) Line defects and temperature effects in liquid crystal tunable planar Bragg gratings. Optics Express, 15, (25), 17129-17135. (doi:10.1364/OE.15.017129).
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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.
|Subjects:||Q Science > QC Physics|
|Divisions:||University Structure - Pre August 2011 > Optoelectronics Research Centre
University Structure - Pre August 2011 > School of Physics and Astronomy
|Date Deposited:||15 Aug 2008|
|Last Modified:||12 Oct 2013 17:38|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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