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Calibration of a gas sensor based on cross-correlation spectroscopy

Calibration of a gas sensor based on cross-correlation spectroscopy
Calibration of a gas sensor based on cross-correlation spectroscopy
In this work an analysis of some calibration effects in the overall response of a gas sensor based on cross-correlation spectroscopy is presented. For this analysis we considered that an FPI with long cavity length (>500 µm) acting as a modulator and a pyroelectric detector are used. Moreover we assumed that the cavity length of the FPI is scanned by driving a PZT with a triangular waveform. Here it is shown that the harmonic composition of the overall sensor response can be affected by small FPI cavity length differences. These effects are due to the pyroelectric responsivity and the triangular waveform used to scan the PZT. Moreover it is shown that the effects over the harmonic composition can be used to calibrate the sensor. Finally simulation results and experimental measurements are provided.
pyroelectric detector, responsivity, harmonic, piezoelectric, cavity length scan, calibration
1741-3567
Vargas-Rodríguez, E.
be919196-f573-4d7b-a65a-9e2a34ab8377
Rutt, H.N.
e09fa327-0c01-467a-9898-4e7f0cd715fc
Rojas-Laguna, R.
d84ec0fc-81b4-4bf8-b083-4186adf4835c
Alvarado-Mendez, E
f9d92e5a-0938-487f-ab61-ecd675c55be4
Vargas-Rodríguez, E.
be919196-f573-4d7b-a65a-9e2a34ab8377
Rutt, H.N.
e09fa327-0c01-467a-9898-4e7f0cd715fc
Rojas-Laguna, R.
d84ec0fc-81b4-4bf8-b083-4186adf4835c
Alvarado-Mendez, E
f9d92e5a-0938-487f-ab61-ecd675c55be4

Vargas-Rodríguez, E., Rutt, H.N., Rojas-Laguna, R. and Alvarado-Mendez, E (2008) Calibration of a gas sensor based on cross-correlation spectroscopy. Journal of Optics A: Pure and Applied Optics, 10 (10), [104018]. (doi:10.1088/1464-4258/10/10/104018).

Record type: Article

Abstract

In this work an analysis of some calibration effects in the overall response of a gas sensor based on cross-correlation spectroscopy is presented. For this analysis we considered that an FPI with long cavity length (>500 µm) acting as a modulator and a pyroelectric detector are used. Moreover we assumed that the cavity length of the FPI is scanned by driving a PZT with a triangular waveform. Here it is shown that the harmonic composition of the overall sensor response can be affected by small FPI cavity length differences. These effects are due to the pyroelectric responsivity and the triangular waveform used to scan the PZT. Moreover it is shown that the effects over the harmonic composition can be used to calibrate the sensor. Finally simulation results and experimental measurements are provided.

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e-pub ahead of print date: 28 August 2008
Published date: October 2008
Keywords: pyroelectric detector, responsivity, harmonic, piezoelectric, cavity length scan, calibration
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 265962
URI: http://eprints.soton.ac.uk/id/eprint/265962
ISSN: 1741-3567
PURE UUID: 3a0949f9-5d50-47ba-93be-38be67351f76

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Date deposited: 18 Jun 2008 14:35
Last modified: 19 Jul 2019 22:22

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