| People | Locations | Statistics |
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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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Gates, James C.
University of Southampton
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2022Functionalised optical fiber devices for nonlinear photonics: from high harmonics generation to frequency comb
- 2021Design of polarization-maintaining FBGs using polyimide films to improve strain-temperature sensing in CFRP laminatescitations
- 2020Photonic glass ceramics based on SnO 2 nanocrystals: advances and perspectivescitations
- 2020Enhancement of nonlinear functionality of step-index silica fibers combining thermal poling and 2D materials depositioncitations
- 2020Four-port integrated waveguide coupler exploiting bi-directional propagation of two single-mode waveguides
- 2020SiO2-SnO2:Er3+ planar waveguides: highly photorefractive glass-ceramicscitations
- 2020Structural health monitoring of composite laminate for aerospace applications via embedded panda fiber Bragg gratingcitations
- 2019Impact of the electrical configuration on the thermal poling of optical fibres with embedded electrodes: Theory and experiments
- 2018Direct UV written integrated waveguides using 213nm light
- 2017High-birefringence direct-UV-written silica waveguides for heralded single-photon sources at telecom wavelengths
- 2017Photonic crystal and quasi-crystals providing simultaneous light coupling and beam splitting within a low refractive-index slab waveguidecitations
- 2016An integrated optical Bragg grating refractometer for volatile organic compound detectioncitations
- 2016Photonic quantum networks
- 2015Optically integrated fiber: a new platform for harsh environmental sensing
- 2015Planarised optical fiber composite using flame hydrolysis deposition demonstrating an integrated FBG anemometer
- 2014Planarised optical fiber composite using flame hydrolysis deposition demonstrating an integrated FBG anemometercitations
- 2013Low optical-loss facet preparation for silica-on-silicon photonics using the ductile dicing regimecitations
- 2013Polish-like facet preparation via dicing for silica integrated opticscitations
- 2013Facet machining of silica waveguides with nanoscale roughness without polishing or lapping
- 2010Micromachined multimode interference device in flat-fibercitations
- 2010Integrated optic glass microcantilevers with Bragg grating interrogationcitations
- 2007Line defects and temperature effects in liquid crystal tunable planar Bragg gratingscitations
- 2004Mapping phase and amplitude of optical field distributions in fiber Bragg gratings
Places of action
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document
Impact of the electrical configuration on the thermal poling of optical fibres with embedded electrodes: Theory and experiments
Abstract
Thermal poling of optical fibres is a well-known technique to create second order nonlinearity inside silica optical fibres, otherwise characterized by negligible nonlinear properties in the electric dipole approximation. Some recent work, realized by F. De Lucia <i>et al</i>., has introduced a new technique, designated as 'Induction poling' [1] and with the adoption of liquid materials as embedded electrodes (both metallic and non-metallic) [2], allows thermal poling of optical fibres with any length and geometry. Despite these advances, thermal poling still represents a technological challenge that needs to be continuously optimized and simplified. In this work we focus our attention on the optimization of the electrical configuration of thermal poling of single mode optical fibres. We consider the single-anode (S-A) configuration, where a single electrode is embedded inside one of the two cladding channels of the optical fibre and connected to the desired electrical potential, and the double-anode (D-A) configuration, introduced for the first time by W. Margulis et al. in 2009 [3] and later commonly adopted by the scientific community. Fig. 1(a) shows the dependence (numerically calculated with COMSOL Multiphysics) of the χ<sup>(2)</sup><sub>eff</sub> on the poling duration for both electrode configurations and at two different positions. The key result of these simulations is that the final value (for extended poling times) of the χ<sup>(2)</sup><sub>eff</sub> in S-A configuration is approximately double with respect to the one obtained in the D-A approach. Furthermore, the value at the centre of the fibre is almost zero in D-A configuration. We hypothesize that this behaviour arises from the mutually competitive evolution of the space-charge formation due to the presence of two anodes. In contrast, the S-A configuration does not suffer from this limitation. Experimentally for the first time the χ<sup>(2)</sup><sub>eff</sub> was measured in a process of second harmonic generation (SHG) at 1550 nm in a fibre periodically poled in S-A configuration. The nonlinearity has been periodically erased via exposure to a UV light generated by a frequency doubled Argon-ion laser (CW, 244 nm). Fig. 1(c) shows the spectrum of the SHG light.