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Fibre optical sensor for C2H2 gas using gas-filled photonic bandgap fibre reference cell

Fibre optical sensor for C2H2 gas using gas-filled photonic bandgap fibre reference cell
Fibre optical sensor for C2H2 gas using gas-filled photonic bandgap fibre reference cell
We present results from the first optical fibre correlation spectroscopy gas sensor which uses no lenses other than in the measurement gas cell. The sensor measures acetylene (C2H2) gas concentration. A 1m length of photonic bandgap fibre (PBGF) was filled with acetylene at atmospheric pressure, then fusion spliced to standard, solid-core, single-mode SMF-28 fibre to form a compact, coilable, reference cell without the need for any lenses or bulk optics. As the cell contained a gas volume <5 µL, it presents a greatly reduced hazard even when filled with explosive or harmful gases. Acetylene concentration measurements were made by comparing the absorption spectrum of this reference cell with that of a bulk optics measurement cell containing test gases, using a simple sensing topology requiring no spectrally selective components. Our sensor had a noise-limited sensitivity of 100 ppm acetylene using 4 s averaging time. Pure carbon dioxide gave a cross-sensitivity equivalent to 150 ppm acetylene.
0925-4005
30-34
Austin, Ed
c54db8ee-b54b-4a53-8bc5-501234ce2178
van Brakel, Adriaan
3c3ae566-b4d3-4357-b72c-b04dce417f99
Petrovich, Marco N.
bfe895a0-da85-4a40-870a-2c7bfc84a4cf
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Austin, Ed
c54db8ee-b54b-4a53-8bc5-501234ce2178
van Brakel, Adriaan
3c3ae566-b4d3-4357-b72c-b04dce417f99
Petrovich, Marco N.
bfe895a0-da85-4a40-870a-2c7bfc84a4cf
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3

Austin, Ed, van Brakel, Adriaan, Petrovich, Marco N. and Richardson, David J. (2009) Fibre optical sensor for C2H2 gas using gas-filled photonic bandgap fibre reference cell. Sensors and Actuators B: Chemical, 139 (1), 30-34. (doi:10.1016/j.snb.2008.07.028).

Record type: Article

Abstract

We present results from the first optical fibre correlation spectroscopy gas sensor which uses no lenses other than in the measurement gas cell. The sensor measures acetylene (C2H2) gas concentration. A 1m length of photonic bandgap fibre (PBGF) was filled with acetylene at atmospheric pressure, then fusion spliced to standard, solid-core, single-mode SMF-28 fibre to form a compact, coilable, reference cell without the need for any lenses or bulk optics. As the cell contained a gas volume <5 µL, it presents a greatly reduced hazard even when filled with explosive or harmful gases. Acetylene concentration measurements were made by comparing the absorption spectrum of this reference cell with that of a bulk optics measurement cell containing test gases, using a simple sensing topology requiring no spectrally selective components. Our sensor had a noise-limited sensitivity of 100 ppm acetylene using 4 s averaging time. Pure carbon dioxide gave a cross-sensitivity equivalent to 150 ppm acetylene.

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More information

e-pub ahead of print date: 20 May 2009
Additional Information: EUROPT(R)ODE IX Proceedings of the 9th European Conference on Optical Chemical Sensors and Biosensors
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 69825
URI: https://eprints.soton.ac.uk/id/eprint/69825
ISSN: 0925-4005
PURE UUID: 7894ca97-0b5d-4333-b334-0f663cccdaae
ORCID for Marco N. Petrovich: ORCID iD orcid.org/0000-0002-3905-5901
ORCID for David J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058

Catalogue record

Date deposited: 08 Dec 2009
Last modified: 06 Mar 2019 01:37

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