Ultrasensitive photothermal gas sensor with a dual-mode anti-resonant hollow-core fiber

Pengcheng Zhao; Pengcheng Zhao; Pengcheng Zhao; Yan Zhao; Yan Zhao; Haihong Bao; Haihong Bao; Hoi Lut Ho; Hoi Lut Ho; Wei Jin; Wei Jin; Shangchun Fan; Shoufei Gao; Yingying Wang; Pu Wang

doi:10.1364/OFS.2020.W3.7

Optical Fiber Sensors Conference 2020 Special Edition
OSA Technical Digest (Optica Publishing Group, 2020),
paper W3.7
•https://doi.org/10.1364/OFS.2020.W3.7

Ultrasensitive photothermal gas sensor with a dual-mode anti-resonant hollow-core fiber

Pengcheng Zhao, Yan Zhao, Haihong Bao, Hoi Lut Ho, Wei Jin, Shangchun Fan, Shoufei Gao, Yingying Wang, and Pu Wang

Optical Fiber Sensors 2020

Washington, DC United States
8–12 June 2020
ISBN: 978-1-55752-307-5

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P. Zhao, Y. Zhao, H. Bao, H. L. Ho, W. Jin, S. Fan, S. Gao, Y. Wang, and P. Wang, "Ultrasensitive photothermal gas sensor with a dual-mode anti-resonant hollow-core fiber," in Optical Fiber Sensors Conference 2020 Special Edition, G. Cranch, A. Wang, M. Digonnet, and P. Dragic, eds., OSA Technical Digest (Optica Publishing Group, 2020), paper W3.7.

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Abstract

We report mode-phase-difference photothermal spectroscopy with a dual-mode anti-resonant hollow-core fiber. Ultra-sensitive gas detection down to ppt level is demonstrated with good stability and unprecedented dynamic range of over 7 orders of magnitude.

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