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Photonic bandgap fiber optical correlation spectroscopy gas sensor

Photonic bandgap fiber optical correlation spectroscopy gas sensor
Photonic bandgap fiber optical correlation spectroscopy gas sensor
We present results obtained from the first all-fiber, lensless, optical correlation spectroscopy gas sensor for acetylene (C). In the reported sensing configuration, hollow-core photonic bandgap fiber (PBGF) is employed to contain all gas samples required for optical absorption measurements. This sensor relies upon comparison of the absorption spectrum of acetylene held in a 'reference gas cell' to that of a gas sample under test, which is contained in the 'measurement gas cell'. Ingress of the test gas mixture into the measurement cell is achieved via femtosecond laser-machined microchannels running from the surface of the PBGF to its hollow core. Stable, lensless optical interrogation of the measurement cell is guaranteed by means of arc fusion splices to standard (solid-core) single-mode fiber (SMF). The reference cell is filled with acetylene at atmospheric pressure, and is permanently sealed at both ends by splices to SMF. Therefore, being constructed entirely from optical fiber, both the reference and measurement gas cells are inherently compact and coilable, and dispense with the need for lenses or other free-space optics for connection to the correlation spectroscopy system. We quantify the acetylene concentration of various test gas mixtures and compare our sensor's measured results with computer simulations.
van Brakel, A.
f8132bae-ecd1-4336-9ebd-656639cc1c37
Austin, E.A.
5e62fbb2-313b-4368-a371-2d8cb7978109
Grivas, C.
7f564818-0ac0-4127-82a7-22e87ac35f1a
Petrovich, M.N.
bfe895a0-da85-4a40-870a-2c7bfc84a4cf
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
van Brakel, A.
f8132bae-ecd1-4336-9ebd-656639cc1c37
Austin, E.A.
5e62fbb2-313b-4368-a371-2d8cb7978109
Grivas, C.
7f564818-0ac0-4127-82a7-22e87ac35f1a
Petrovich, M.N.
bfe895a0-da85-4a40-870a-2c7bfc84a4cf
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3

van Brakel, A., Austin, E.A., Grivas, C., Petrovich, M.N. and Richardson, D.J. (2008) Photonic bandgap fiber optical correlation spectroscopy gas sensor. Optical Fibre Sensors OFS-19. 14 - 18 Apr 2008. (doi:10.1117/12.786114).

Record type: Conference or Workshop Item (Paper)

Abstract

We present results obtained from the first all-fiber, lensless, optical correlation spectroscopy gas sensor for acetylene (C). In the reported sensing configuration, hollow-core photonic bandgap fiber (PBGF) is employed to contain all gas samples required for optical absorption measurements. This sensor relies upon comparison of the absorption spectrum of acetylene held in a 'reference gas cell' to that of a gas sample under test, which is contained in the 'measurement gas cell'. Ingress of the test gas mixture into the measurement cell is achieved via femtosecond laser-machined microchannels running from the surface of the PBGF to its hollow core. Stable, lensless optical interrogation of the measurement cell is guaranteed by means of arc fusion splices to standard (solid-core) single-mode fiber (SMF). The reference cell is filled with acetylene at atmospheric pressure, and is permanently sealed at both ends by splices to SMF. Therefore, being constructed entirely from optical fiber, both the reference and measurement gas cells are inherently compact and coilable, and dispense with the need for lenses or other free-space optics for connection to the correlation spectroscopy system. We quantify the acetylene concentration of various test gas mixtures and compare our sensor's measured results with computer simulations.

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More information

Published date: April 2008
Venue - Dates: Optical Fibre Sensors OFS-19, 2008-04-14 - 2008-04-18

Identifiers

Local EPrints ID: 54038
URI: https://eprints.soton.ac.uk/id/eprint/54038
PURE UUID: 58360f77-2455-4f10-aae5-fd4a80a109d3
ORCID for M.N. Petrovich: ORCID iD orcid.org/0000-0002-3905-5901
ORCID for D.J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058

Catalogue record

Date deposited: 22 Aug 2008
Last modified: 03 Dec 2019 02:05

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Contributors

Author: A. van Brakel
Author: E.A. Austin
Author: C. Grivas
Author: M.N. Petrovich ORCID iD
Author: D.J. Richardson ORCID iD

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