Nested-capillary anti-resonant silica fiber with mid-infrared transmission and low bending sensitivity at 4000 nm

Mariusz Klimczak; Dominik Dobrakowski; Amar Nath Ghosh; Grzegorz Stępniewski; Dariusz Pysz; Guillaume Huss; Thibaut Sylvestre; Ryszard Buczyński

doi:10.1364/ol.44.004395

arXiv · 1901.02288

Nested-capillary anti-resonant silica fiber with mid-infrared transmission and low bending sensitivity at 4000 nm

Mariusz Klimczak·Dominik Dobrakowski·Amar Nath Ghosh·Grzegorz Stępniewski·Dariusz Pysz·Guillaume Huss·Thibaut Sylvestre·Ryszard Buczyński

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Abstract

We report a silica glass nested capillary anti-resonant nodeless fiber with transmission and low bending sensitivity in the mid-infrared around 4000 nm. The fiber is characterized in terms of transmission over 1700-4200 nm wavelengths, revealing a mid-infrared 3500-4200 nm transmission window, clearly observable for a 12 m long fiber. Bending loss around 4000 nm is 0.5 dB/m measured over 3 full turns with 40 mm radius, going up to 5 dB/m for full turns with 15 mm radius. Our results provide experimental evidence of hollow-core silica fibers in which nested, anti-resonant capillaries provide high bend resistance in the mid-infrared. This is obtained for a fiber with large core diameter of over 60 um relative to around 30 um-capillaries in the cladding, which motivates its application in gas fiber lasers or fiber-based mid-infrared spectroscopy of COx or NxO analytes.

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BibTeX RIS

Mariusz Klimczak, Dominik Dobrakowski, Amar Nath Ghosh, Grzegorz Stępniewski, Dariusz Pysz, Guillaume Huss, Thibaut Sylvestre, Ryszard Buczyński. 2019-09-03. Nested-capillary anti-resonant silica fiber with mid-infrared transmission and low bending sensitivity at 4000 nm. https://doi.org/10.1364/ol.44.004395

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