High sensitivity methane and ethane detection using low-loss mid-IR hollow-core photonic bandgap fibers
High sensitivity methane and ethane detection using low-loss mid-IR hollow-core photonic bandgap fibers
We present sub-ppm sensitivity, broadband gas absorption measurements using improved hollow-core photonic-bandgap fibers with low loss in the range 3-3.6 µm. The sensitivity levels, unprecedented for a fiber-based sensor system, were achieved by addressing the strong mid-IR vibrational bands through use of a high-intensity supercontinuum source and by exploiting long interaction lengths in the HC-PBGFs. We measured mixtures of methane (1034 ppm) and ethane (50.4 ppm) and attained 7 and 0.9 ppm sensitivities for 0.925 and 5.69 m long HC-PBGF samples, respectively, from high-resolution (0.2 nm) spectra. Significant scope for further sensitivity improvement exists through use of longer fibers in combination with more sophisticated sensing schemes.
91573P
Petrovich, M.N.
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Heidt, A.M.
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Wheeler, N.V.
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Baddela, N.K.
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Richardson, D.J.
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Petrovich, M.N.
bfe895a0-da85-4a40-870a-2c7bfc84a4cf
Heidt, A.M.
66e6eae4-ce08-460c-8ffa-96e88ddbad28
Wheeler, N.V.
0fd34178-a77b-4c71-a3a6-86a1f634f1a0
Baddela, N.K.
1a871ff8-f95d-495b-8b91-9d6ccd209528
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Petrovich, M.N., Heidt, A.M., Wheeler, N.V., Baddela, N.K. and Richardson, D.J.
(2014)
High sensitivity methane and ethane detection using low-loss mid-IR hollow-core photonic bandgap fibers.
23rd International Conference on Optical Fiber Sensors (OFS), , Santander, Spain.
02 - 06 Jun 2014.
.
(doi:10.1117/12.2057842).
Record type:
Conference or Workshop Item
(Paper)
Abstract
We present sub-ppm sensitivity, broadband gas absorption measurements using improved hollow-core photonic-bandgap fibers with low loss in the range 3-3.6 µm. The sensitivity levels, unprecedented for a fiber-based sensor system, were achieved by addressing the strong mid-IR vibrational bands through use of a high-intensity supercontinuum source and by exploiting long interaction lengths in the HC-PBGFs. We measured mixtures of methane (1034 ppm) and ethane (50.4 ppm) and attained 7 and 0.9 ppm sensitivities for 0.925 and 5.69 m long HC-PBGF samples, respectively, from high-resolution (0.2 nm) spectra. Significant scope for further sensitivity improvement exists through use of longer fibers in combination with more sophisticated sensing schemes.
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e-pub ahead of print date: 2 June 2014
Venue - Dates:
23rd International Conference on Optical Fiber Sensors (OFS), , Santander, Spain, 2014-06-02 - 2014-06-06
Organisations:
Optoelectronics Research Centre
Identifiers
Local EPrints ID: 370807
URI: http://eprints.soton.ac.uk/id/eprint/370807
PURE UUID: a712dffe-123b-435f-ae21-6c2c4f096124
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Date deposited: 07 Nov 2014 16:03
Last modified: 15 Mar 2024 03:38
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Contributors
Author:
A.M. Heidt
Author:
N.K. Baddela
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