BÉRUBÉ, Jean-Philippe; LE CAMUS, Arthur; MESSADDEQ, Sandra Helena; PETIT, Yannick; MESSADDEQ, Younès; CANIONI, Lionel; VALLÉE, Réal

doi:10.1364/OME.7.003124

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BÉRUBÉ, Jean-Philippe
Centre d'Optique, Photonique et Laser [COPL]

LE CAMUS, Arthur
Centre d'Optique, Photonique et Laser [COPL]
Centre d'Etudes Lasers Intenses et Applications [CELIA]

MESSADDEQ, Sandra Helena
Centre d'Optique, Photonique et Laser [COPL]

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Ce document a été publié dans

Optical Materials Express. 2017, vol. 7, n° 9, p. 3124-3135

OSA pub

Résumé en anglais

A detailed investigation of the photo-inscription of waveguides in barium gallo-germanate (BGG, BaO, GeO2, Ga2O3) glass is presented. Upon irradiation of BGG glass samples of different contents of germanium dioxide with a femtosecond laser pulse train, positive refractive index changes are produced over a wide range of exposure conditions. Waveguides with a controllable diameter ranging from 4 to 35 µm and a maximum index change up to 10−2 were inscribed. A glass sample with custom molecular composition was purified to remove hydroxyl ions and reduce the strong absorption band near 3 µm. A careful tailoring of the writing conditions allowed for the inscription of low-loss waveguides supporting only two transverse modes at the wavelength of 2.78 µm. An upper bound for the propagation losses of 0.5 ± 0.1 dB/cm was determined, showing the great potential of the BGG glass family for the fabrication of core waveguides operating in the 2-4 µm spectral range. Our results actually open a pathway towards the integration of mid-IR photonic devices based on the BGG glass family.< Réduire

DOI

http://dx.doi.org/10.1364/OME.7.003124

Project ANR

Initiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003

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Importé de hal

Unités de recherche

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026