Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/91975
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Title: Temperature and curvature insensitive all-fiber sensor used for human breath monitoring
Authors: Yuan, W 
Li, L 
Wang, Y 
Lian, Z
Chen, D
Yu, C 
Lu, C 
Issue Date: Aug-2021
Source: Optics express, 16 Aug. 2021, v. 29, no. 17, p. 26375-26384
Abstract: In this paper, an all-fiber sensor based on hollow core Bragg fiber (HCBF) is proposed and successfully manufactured, which can be used for human breath monitoring. Benefiting from the identical outer diameters of HCBF and single mode fibers (SMFs), the sensor can be directly constructed by sandwiching a segment of HCBF between two SMFs. Based on optical propagation properties of HCBF, the transmission light is sensitive to specific environmental change induced by human breath. Thus, the breath signals can be explicitly recorded by measuring the intensity of the transmitted laser. The sensor presents a rapid response time of ∼0.15 s and recovery time of ∼0.65 s. In addition, the HCBF-based sensor shows good insensitivity to the variation of temperature and curvature, which enables its reliable sensing performance in the dynamic and changeful environment.
Publisher: Optical Society of America
Journal: Optics express 
EISSN: 1094-4087
DOI: 10.1364/OE.433959
Rights: © 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement (https://www.osapublishing.org/library/license_v1.cfm#VOR-OA)
Journal © 2021
© 2021 Optica Publishing Group. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.
The following publication Yuan, W., Li, L., Wang, Y., Lian, Z., Chen, D., Yu, C., & Lu, C. (2021). Temperature and curvature insensitive all-fiber sensor used for human breath monitoring. Optics Express, 29(17), 26375-26384. is available at https://doi.org/10.1364/OE.433959
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