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Self-heated all-fiber sensing system for cryogenic environments

Chen, T and Xu, D and Buric, M and Maklad, M and Swinehart, PR and Chen, KP (2010) Self-heated all-fiber sensing system for cryogenic environments. Measurement Science and Technology, 21 (9). ISSN 0957-0233

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We present a new design of an all-fiber sensor system to enhance the low-temperature sensing performance of cryogenic fuel. Fiber Bragg gratings (FBGs) are inscribed in high attenuation fibers (HAFs), which absorb in-fiber light to raise the local sensor temperature in a cryogenic environment. The heated sensor displays improved sensitivity and response time to measure multiple parameters. Two sensing applications are described in this paper. First, a HAF-FBG sensor coated with palladium is used to detect hydrogen concentration well below the 4% explosion limit at 173 K. Second, an array of three aluminum-coated sensors is capable of measuring the liquid level at 77 K. In addition, through the selection of the length and attenuation coefficient of HAF, numerous FBG sensors can be multiplexed on a single fiber for multipoint sensing using a single fiber feedthrough. © 2010 IOP Publishing Ltd.


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Item Type: Article
Status: Published
CreatorsEmailPitt UsernameORCID
Chen, T
Xu, D
Buric, M
Maklad, M
Swinehart, PR
Chen, KPpec9@pitt.eduPEC90000-0002-4830-0817
Date: 28 July 2010
Date Type: Publication
Journal or Publication Title: Measurement Science and Technology
Volume: 21
Number: 9
DOI or Unique Handle: 10.1088/0957-0233/21/9/094036
Schools and Programs: Swanson School of Engineering > Electrical and Computer Engineering
Refereed: Yes
ISSN: 0957-0233
Date Deposited: 17 Oct 2014 15:24
Last Modified: 15 Jan 2021 15:55


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