Pulsed photothermal interferometry for high sensitivity gas detection with hollow-core photonic bandgap fibre

Yuechuan Lin; Wei Jin; Fan Yang; Hoi Lut Ho

doi:10.1117/12.2265498

Pulsed photothermal interferometry for high sensitivity gas detection with hollow-core photonic bandgap fibre

Yuechuan Lin, Wei Jin, Fan Yang, Hoi Lut Ho

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

Abstract

Pulsed photothermal interferometry (PTI) gas sensor with hollow-core photonic bandgap fibre (HC-PBF) is demonstrated with a Sagnac interferometer-based phase detection system. Under the condition of constant peak pump power, the optimal pulse duration is found to be > 1:2 μs for detecting low-concentration of trace gases in nitrogen, limited by thermal conduction of gases within the hollow-core. Preliminary experiments with a 0.62-mlong HC-PBF gas cell, low peak power (∼ 20:2mW) and a boxcar averager with 10k average times demonstrated a detection limit of 3:3 p:p:m acetylene. Detection limit down to ppb or lower is expected with high peak power pump pulses.

Original language	English
Title of host publication	25th International Conference on Optical Fiber Sensors
Publisher	SPIE
Volume	10323
ISBN (Electronic)	9781510610910
DOIs	https://doi.org/10.1117/12.2265498
Publication status	Published - 1 Jan 2017
Event	25th International Conference on Optical Fiber Sensors, OFS 2017 - Jeju, Korea, Republic of Duration: 24 Apr 2017 → 28 Apr 2017

Conference

Conference	25th International Conference on Optical Fiber Sensors, OFS 2017
Country/Territory	Korea, Republic of
City	Jeju
Period	24/04/17 → 28/04/17

Keywords

Optical fibre sensor, photothermal interferometry, gas sensor, photonic crystal fibre, spectroscopy

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

More information

10.1117/12.2265498

Cite this

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title = "Pulsed photothermal interferometry for high sensitivity gas detection with hollow-core photonic bandgap fibre",

abstract = "Pulsed photothermal interferometry (PTI) gas sensor with hollow-core photonic bandgap fibre (HC-PBF) is demonstrated with a Sagnac interferometer-based phase detection system. Under the condition of constant peak pump power, the optimal pulse duration is found to be > 1:2 μs for detecting low-concentration of trace gases in nitrogen, limited by thermal conduction of gases within the hollow-core. Preliminary experiments with a 0.62-mlong HC-PBF gas cell, low peak power (∼ 20:2mW) and a boxcar averager with 10k average times demonstrated a detection limit of 3:3 p:p:m acetylene. Detection limit down to ppb or lower is expected with high peak power pump pulses.",

keywords = "Optical fibre sensor, photothermal interferometry, gas sensor, photonic crystal fibre, spectroscopy",

author = "Yuechuan Lin and Wei Jin and Fan Yang and Ho, {Hoi Lut}",

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booktitle = "25th International Conference on Optical Fiber Sensors",

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Lin, Y, Jin, W, Yang, F & Ho, HL 2017, Pulsed photothermal interferometry for high sensitivity gas detection with hollow-core photonic bandgap fibre. in 25th International Conference on Optical Fiber Sensors. vol. 10323, 1032388, SPIE, 25th International Conference on Optical Fiber Sensors, OFS 2017, Jeju, Korea, Republic of, 24/04/17. https://doi.org/10.1117/12.2265498

Pulsed photothermal interferometry for high sensitivity gas detection with hollow-core photonic bandgap fibre. / Lin, Yuechuan; Jin, Wei; Yang, Fan; Ho, Hoi Lut.

25th International Conference on Optical Fiber Sensors. Vol. 10323 SPIE, 2017. 1032388.

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

TY - GEN

T1 - Pulsed photothermal interferometry for high sensitivity gas detection with hollow-core photonic bandgap fibre

AU - Lin, Yuechuan

AU - Jin, Wei

AU - Yang, Fan

AU - Ho, Hoi Lut

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Pulsed photothermal interferometry (PTI) gas sensor with hollow-core photonic bandgap fibre (HC-PBF) is demonstrated with a Sagnac interferometer-based phase detection system. Under the condition of constant peak pump power, the optimal pulse duration is found to be > 1:2 μs for detecting low-concentration of trace gases in nitrogen, limited by thermal conduction of gases within the hollow-core. Preliminary experiments with a 0.62-mlong HC-PBF gas cell, low peak power (∼ 20:2mW) and a boxcar averager with 10k average times demonstrated a detection limit of 3:3 p:p:m acetylene. Detection limit down to ppb or lower is expected with high peak power pump pulses.

AB - Pulsed photothermal interferometry (PTI) gas sensor with hollow-core photonic bandgap fibre (HC-PBF) is demonstrated with a Sagnac interferometer-based phase detection system. Under the condition of constant peak pump power, the optimal pulse duration is found to be > 1:2 μs for detecting low-concentration of trace gases in nitrogen, limited by thermal conduction of gases within the hollow-core. Preliminary experiments with a 0.62-mlong HC-PBF gas cell, low peak power (∼ 20:2mW) and a boxcar averager with 10k average times demonstrated a detection limit of 3:3 p:p:m acetylene. Detection limit down to ppb or lower is expected with high peak power pump pulses.

KW - Optical fibre sensor, photothermal interferometry, gas sensor, photonic crystal fibre, spectroscopy

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M3 - Conference article published in proceeding or book

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BT - 25th International Conference on Optical Fiber Sensors

PB - SPIE

T2 - 25th International Conference on Optical Fiber Sensors, OFS 2017

Y2 - 24 April 2017 through 28 April 2017

ER -

Pulsed photothermal interferometry for high sensitivity gas detection with hollow-core photonic bandgap fibre

Abstract

Conference

Keywords

ASJC Scopus subject areas

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