Dichloromethane Detection Based on Near-Infrared Absorptive Sensing
- Authors
- Han, Jae-Ho; Yoon, Sang Min
- Issue Date
- 9월-2012
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Biophotonics; fiber optics; optical fiber lasers; optical sensors; spectroscopy
- Citation
- IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, v.18, no.5, pp.1547 - 1552
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
- Volume
- 18
- Number
- 5
- Start Page
- 1547
- End Page
- 1552
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/107547
- DOI
- 10.1109/JSTQE.2011.2180367
- ISSN
- 1077-260X
- Abstract
- Dichloromethane (DCM), a clear and lipophilic liquid that has been primarily used in industrial applications, has caused organic poisoning upon inhalation during its wide use as a chlorinated organic solvent and in other industrial processes. In this paper, a biophotonic near-infrared sensor using a tunable fiber ring laser based on an absorption spectroscopic method has been demonstrated in order to perform DCM detection. A continuous wave near-infrared source operating in the C-band wavelength range has been developed and optically characterized. The principle of the Sagnac loop mirror, which operates as a saturable absorber to effectively narrow down the laser linewidth, has been reviewed. By forming a fiber-based interferometer loop with an unpumped erbium-doped fiber inserted, we could reduce the external noise and stabilize the laser frequency to achieve a narrow linewidth. The result shows an accuracy of 16 pm or 0.06 cm(-1), which is much more precise than the previous results of 1 nm or 4 cm(-1) using a method based on a broadband infrared light source.
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Collections - Graduate School > Department of Brain and Cognitive Engineering > 1. Journal Articles
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