Snow, B.D., Adikan, F.R.M., Gates, J.C., Gawith, C.B.E., Dyadyusha, A., Major, Huw E., 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, 178-184. (doi:10.1080/15421400902817015).
Abstract
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.
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- Faculties (pre 2011 reorg) > Faculty of Engineering Science & Maths (pre 2011 reorg) > Optoelectronics Research Centre (pre 2011 reorg)
Current Faculties > Faculty of Engineering and Physical Sciences > Zepler Institute for Photonics and Nanoelectronics > Optoelectronics Research Centre (pre 2011 reorg)
Zepler Institute for Photonics and Nanoelectronics > Optoelectronics Research Centre (pre 2011 reorg) - Faculties (pre 2011 reorg) > Faculty of Engineering Science & Maths (pre 2011 reorg) > Physics & Astronomy (pre 2011 reorg) > Quantum, Light & Matter Group (pre 2011 reorg)
Current Faculties > Faculty of Engineering and Physical Sciences > School of Physics and Astronomy > Physics & Astronomy (pre 2011 reorg) > Quantum, Light & Matter Group (pre 2011 reorg)
School of Physics and Astronomy > Physics & Astronomy (pre 2011 reorg) > Quantum, Light & Matter Group (pre 2011 reorg)
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