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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Gawith, Corin
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Publications (7/7 displayed)
- 2020Four-port integrated waveguide coupler exploiting bi-directional propagation of two single-mode waveguides
- 2017Ductile dicing of LiNbO3 ridge waveguide facets to achieve 0.29 nm surface roughness in single process stepcitations
- 2007Line defects and temperature effects in liquid crystal tunable planar Bragg gratingscitations
- 2005Direct UV writing for channel definition on FHD silica-on-silicon
- 2004Photosensitive properties of a tin-doped sodium silicate glass for direct ultraviolet writingcitations
- 2003Direct-UV writing of channel waveguides in a bulk photosensitive tin doped sodium silicate glass
- 2003Integrated optical structures written in a polymer film by UV-induced refractive index modification
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article
Line defects and temperature effects in liquid crystal tunable planar Bragg gratings
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.