Novel hollow-core chalcogenide fiber with anti-resonant arches for high-power infrared laser transmission

Francois Chenard; Oseas Alvarez; Andrew Buff

doi:10.1117/12.2543763

21 February 2020 Novel hollow-core chalcogenide fiber with anti-resonant arches for high-power infrared laser transmission

Francois Chenard, Oseas Alvarez, Andrew Buff

Author Affiliations +

Proceedings Volume 11261, Components and Packaging for Laser Systems VI; 112610W (2020) https://doi.org/10.1117/12.2543763
Event: SPIE LASE, 2020, San Francisco, California, United States

Abstract

An innovative hollow-core fiber with anti-resonant arches (HC-ARA) is designed and made of chalcogenide glass As₂S₃. The HC-ARA fiber has a single layer of eight non-touching curved arches, each one being solidly attached at two locations on the outer solid region to prevent any lateral displacement and to preserve the arches’ shape and uniformity during the fabrication process. The thickness and spacing between the arches are selected to minimize the fiber transmission loss <0.1 dB/m for CO₂ laser at 10.6 micron. Also the higher order modes of the HC-ARA fiber are more attenuated than the fundamental mode, so the fiber is effectively single mode after only a few meters. The HC-ARA preform is made by extrusion of chalcogenide glass through a die specifically designed to produce the anti-resonant arches. The extruded HC-ARA preform is pulled in a fiber using photonic crystal fiber draw techniques. Recent simulation and experimental results on the HC-ARA fiber are presented to illustrate a novel fiber solution for CO₂ laser transmission at 10.6 micron.

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Francois Chenard, Oseas Alvarez, and Andrew Buff "Novel hollow-core chalcogenide fiber with anti-resonant arches for high-power infrared laser transmission", Proc. SPIE 11261, Components and Packaging for Laser Systems VI, 112610W (21 February 2020); https://doi.org/10.1117/12.2543763

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