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Ultrafast Laser Inscription of High-Performance Mid-Infrared Waveguides in Chalcogenide Glass

Abstract : We present the realization of mid-infrared waveguide by ultrafast laser inscription technique in a chalco-genide glass. Our approach is based on multicore waveguide that consists in an alignment on a mesh of positive refractive index channels placed parallel to each other. Two different meshes are investigated with different refractive index contrasts between the channel and the glass matrix. A detailed analysis of the performances at a wavelength of 4.5 mu m shows propagation losses of 0.20 +/- 0.05 dB/cm and coupling efficiencies higher than 60%.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01973907
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Submitted on : Tuesday, January 8, 2019 - 3:05:27 PM
Last modification on : Friday, July 10, 2020 - 4:00:55 PM

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Pascal Masselin, Eugene Bychkov, David Le Coq. Ultrafast Laser Inscription of High-Performance Mid-Infrared Waveguides in Chalcogenide Glass. IEEE Photonics Technology Letters, Institute of Electrical and Electronics Engineers, 2018, 30 (24), pp.2123-2126. ⟨10.1109/LPT.2018.2878288⟩. ⟨hal-01973907⟩

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