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Pruneri, V.
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Publications (9/9 displayed)
- 2016Low temperature direct growth of graphene patterns on flexible glass substrates catalysed by a sacrificial ultrathin Ni filmcitations
- 2016Ultrafast optical response of the amorphous and crystalline states of the phase change material Ge2Sb2Te5citations
- 2010Fiber and integrated waveguide-based optical sensorscitations
- 2001Vacuum ultraviolet absorption spectrum of photorefractive Sn-doped silica fiber preformscitations
- 2001UV laser-induced current in germanosilicate fibres with built in electrodes
- 2001Thermally poled silica samples are structurally heterogeneous: Electron diffraction evidence of partial crystallizationcitations
- 2000Photoinduced processes in Sn-doped silica fiber-preformscitations
- 2000Bragg gratings in ternary SiO2 SnO2 Na2O optical glass fiberscitations
- 2000Vacuum ultra-violet absorption spectrum of photorefractive Sn-doped silica fiber preforms
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article
Bragg gratings in ternary SiO2 SnO2 Na2O optical glass fibers
Abstract
Bragg gratings have been written in an optical fibre with a core made of ternary SiO2:SnO2:Na2O glass and a SiO2 cladding. The presence of Na2O allows for higher concentrations of SnO2 which is believed to be responsible for the photorefractive response of this composition. In these preliminary experiments significant refractive index modulations, up to 6.2x10-4, have been achieved using a 248nm excimer laser and a phase mask to write gratings for reflectivity at around 1.5µm. The induced refractive index changes show enhanced temperature stability and there is no sign of any erasure up to temperatures exceeding 600°C.