Photonic bandgap guiding into a composite AgPO3-glass/silica microstructured optical fibre

Ioannis Konidakis; Gianluigi Zito; Stavros Pissadakis

doi:10.1117/12.923796

25 April 2012 Photonic bandgap guiding into a composite AgPO₃-glass/silica microstructured optical fibre

Ioannis Konidakis, Gianluigi Zito, Stavros Pissadakis

Proceedings Volume 8426, Microstructured and Specialty Optical Fibres; 842607 (2012) https://doi.org/10.1117/12.923796
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

Abstract

Infiltration of glass matrices inside Photonic Crystals Fibres (PCFs) for achieving photonic bandgap (PBG) guidance and expand devices development capabilities has been recently demonstrated. Herein, we report the fabrication of an all-solid PBG guiding PCF by suction-assisted infiltration of molten silver-metaphosphate (AgPO₃) glass into the air capillaries of a commercial solid core PCF. The relatively low viscosity of the AgPO₃ glass melt permitted infiltration at ~ 700 °C inside an annealing oven apparatus by applying suction with the use of a standard mechanical vacuum pump, while its low glass transition temperature of ~ 190 °C allows structural relaxations at temperatures close to ambient and the formation of high quality glass strands inside the silica structure of the PCF. The AgPO₃/silica PCF was characterized by means of its transmission spectrum that showed PBG guidance over the measurement range (350-1650nm). The effect of the AgPO₃ glass photosensitivity on the guiding properties of the AgPO₃/silica PCF was explored by employing a 355nm, 150 ps laser irradiation. The exposure gave rise to a photo-induced enhancement of the transmission-to-stop-band extinction ratio by ~60 dB/cm as well as bandwidth tuning. Numerical calculations of the transmission spectra of the AgPO₃/silica PCF have been performed for confirming the experimental results and modelling the photo-induced variation of the two-glass fibre transmission. We believe that the fabrication of the AgPO₃/silica PBG fibre constitutes a strong base for the development of new in-fibre sensing and scattering-based devices, by exploiting the high photosensitivity of silver and its specific plasmon absorption properties.

Citation Download Citation

Ioannis Konidakis, Gianluigi Zito, and Stavros Pissadakis "Photonic bandgap guiding into a composite AgPO₃-glass/silica microstructured optical fibre", Proc. SPIE 8426, Microstructured and Specialty Optical Fibres, 842607 (25 April 2012); https://doi.org/10.1117/12.923796

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