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arXiv · 1908.03452

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

Pascal Masselin·Eugène Bychkov·David Le Coq
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Abstract

We present the realization of mid-infrared waveguide by ultrafast laser inscription technique in a chalcogenide 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 $\pm$ 0.05 dB/cm and coupling efficiencies higher than 60 %.

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Pascal Masselin, Eugène Bychkov, David Le Coq. 2019-08-09. Ultrafast Laser Inscription of High Performance Mid-Infrared Waveguides in Chalcogenide Glass. https://doi.org/10.1109/lpt.2018.2878288

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