Development and Integration of a CO Detection System Based on Wavelength Modulation Spectroscopy Using Near-Infrared DFB Laser
Joint Authors
Li, Bin
Zhang, Shuo-Cheng
Chi, Yao-Dan
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-01-17
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
A wavelength modulation spectroscopy- (WMS-) based gas sensing system was established to measure concentration of carbon monoxide (CO) in the range 0–100%.
The CO absorption line at 1563.06 nm was scanned with a tunable distributed feedback (DFB) laser, and two InGaAs photodiodes were applied to perform optic-electric conversion.
Without using commercial instruments, essential electrical circuits were self-developed and integrated, including laser temperature controller, laser current driver, signal generator, and digital lock-in amplifier.
The gas cell deployed in the system was fiber coupled with a total effective optical path length of 50 cm.
The second-order harmonic signal was extracted, and experiments of gas detection were carried out to investigate the performance of the sensor, including detection repeatability, detection accuracy, response time, and limit of detection (LoD).
Experiment results show that the sensor is reliable and has acceptable probing performance.
The maximum relative detection error is less than 3.8%, suggesting good detection stability.
Benefiting from the self-developed sensor, the whole CO detection system has small size, affordable expense, and application potential.
American Psychological Association (APA)
Li, Bin& Zhang, Shuo-Cheng& Chi, Yao-Dan. 2018. Development and Integration of a CO Detection System Based on Wavelength Modulation Spectroscopy Using Near-Infrared DFB Laser. Journal of Spectroscopy،Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1202420
Modern Language Association (MLA)
Li, Bin…[et al.]. Development and Integration of a CO Detection System Based on Wavelength Modulation Spectroscopy Using Near-Infrared DFB Laser. Journal of Spectroscopy No. 2018 (2018), pp.1-8.
https://search.emarefa.net/detail/BIM-1202420
American Medical Association (AMA)
Li, Bin& Zhang, Shuo-Cheng& Chi, Yao-Dan. Development and Integration of a CO Detection System Based on Wavelength Modulation Spectroscopy Using Near-Infrared DFB Laser. Journal of Spectroscopy. 2018. Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1202420
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1202420