Oxygen gas sensing with photothermal spectroscopy in a hollow-core negative curvature fiber

Yingzhen Hong; Haihong Bao; Wei Jin; Shoulin Jiang; Hoi Lut Ho; Shoufei Gao; Yingying Wang

doi:10.3390/s20216084

Oxygen gas sensing with photothermal spectroscopy in a hollow-core negative curvature fiber

Yingzhen Hong, Haihong Bao, Wei Jin, Shoulin Jiang, Hoi Lut Ho, Shoufei Gao, Yingying Wang

Research output: Journal article publication › Letter › peer-review

13 Citations (Scopus)

Abstract

We demonstrate a compact all-fiber oxygen sensor using photothermal interferometry with a short length (4.3 cm) of hollow-core negative curvature fibers. The hollow-core fiber has double transmission windows covering both visible and near-infrared wavelength regions. Absorption of a pump laser beam at 760 nm produces photothermal phase modulation and a probe Fabry-Perot interferometer operating at 1550 nm is used to detect the phase modulation. With wavelength modulation and first harmonic detection, a limit of detection down to 54 parts per million (ppm) with a 600-s averaging time is achieved, corresponding to a normalized equivalent absorption of 7.7 × 10⁻⁸ cm⁻¹. The oxygen sensor has great potential for in situ detection applications.

Original language	English
Article number	6084
Pages (from-to)	1-9
Number of pages	9
Journal	Sensors (Switzerland)
Volume	20
Issue number	21
DOIs	https://doi.org/10.3390/s20216084
Publication status	Published - 1 Nov 2020

Keywords

Hollow-core fiber
Optical fiber sensor
Oxygen detection
Photothermal interferometry

ASJC Scopus subject areas

Analytical Chemistry
Information Systems
Atomic and Molecular Physics, and Optics
Biochemistry
Instrumentation
Electrical and Electronic Engineering

More information

10.3390/s20216084

Cite this

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title = "Oxygen gas sensing with photothermal spectroscopy in a hollow-core negative curvature fiber",

abstract = "We demonstrate a compact all-fiber oxygen sensor using photothermal interferometry with a short length (4.3 cm) of hollow-core negative curvature fibers. The hollow-core fiber has double transmission windows covering both visible and near-infrared wavelength regions. Absorption of a pump laser beam at 760 nm produces photothermal phase modulation and a probe Fabry-Perot interferometer operating at 1550 nm is used to detect the phase modulation. With wavelength modulation and first harmonic detection, a limit of detection down to 54 parts per million (ppm) with a 600-s averaging time is achieved, corresponding to a normalized equivalent absorption of 7.7 × 10−8 cm−1. The oxygen sensor has great potential for in situ detection applications.",

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AU - Hong, Yingzhen

AU - Bao, Haihong

AU - Jin, Wei

AU - Jiang, Shoulin

AU - Ho, Hoi Lut

AU - Gao, Shoufei

AU - Wang, Yingying

PY - 2020/11/1

Y1 - 2020/11/1

N2 - We demonstrate a compact all-fiber oxygen sensor using photothermal interferometry with a short length (4.3 cm) of hollow-core negative curvature fibers. The hollow-core fiber has double transmission windows covering both visible and near-infrared wavelength regions. Absorption of a pump laser beam at 760 nm produces photothermal phase modulation and a probe Fabry-Perot interferometer operating at 1550 nm is used to detect the phase modulation. With wavelength modulation and first harmonic detection, a limit of detection down to 54 parts per million (ppm) with a 600-s averaging time is achieved, corresponding to a normalized equivalent absorption of 7.7 × 10−8 cm−1. The oxygen sensor has great potential for in situ detection applications.

AB - We demonstrate a compact all-fiber oxygen sensor using photothermal interferometry with a short length (4.3 cm) of hollow-core negative curvature fibers. The hollow-core fiber has double transmission windows covering both visible and near-infrared wavelength regions. Absorption of a pump laser beam at 760 nm produces photothermal phase modulation and a probe Fabry-Perot interferometer operating at 1550 nm is used to detect the phase modulation. With wavelength modulation and first harmonic detection, a limit of detection down to 54 parts per million (ppm) with a 600-s averaging time is achieved, corresponding to a normalized equivalent absorption of 7.7 × 10−8 cm−1. The oxygen sensor has great potential for in situ detection applications.

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KW - Optical fiber sensor

KW - Oxygen detection

KW - Photothermal interferometry

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Oxygen gas sensing with photothermal spectroscopy in a hollow-core negative curvature fiber

Abstract

Keywords

ASJC Scopus subject areas

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