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Multiplexable low-temperature fiber Bragg grating hydrogen sensors

Buric, M and Chen, T and Maklad, M and Swinehart, PR and Chen, KP (2009) Multiplexable low-temperature fiber Bragg grating hydrogen sensors. IEEE Photonics Technology Letters, 21 (21). 1594 - 1596. ISSN 1041-1135

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A palladium-coated fiber Bragg grating (FBG) inscribed in high attenuation fiber (HAF) capable of measuring hydrogen concentration at -150 °C, well below the 4% explosion limit, is presented. The low-temperature performance of the sensor was improved by heating the gratings as much as 300 K above the ambient temperature with highly attenuated infrared laser light. The sensitivity and response time of the FBG hydrogen sensor were studied as functions of fiber temperature. Through the selection of length and the loss per meter of the HAF, the self-heating scheme demonstrated here enables numerous FBG hydrogen sensors to be multiplexed in a single fiber for multipoint hydrogen sensing using a single fiber feedthrough. © 2009 IEEE.


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Item Type: Article
Status: Published
CreatorsEmailPitt UsernameORCID
Buric, M
Chen, T
Maklad, M
Swinehart, PR
Chen, KPpec9@pitt.eduPEC90000-0002-4830-0817
Date: 1 November 2009
Date Type: Publication
Journal or Publication Title: IEEE Photonics Technology Letters
Volume: 21
Number: 21
Page Range: 1594 - 1596
DOI or Unique Handle: 10.1109/lpt.2009.2030685
Schools and Programs: Swanson School of Engineering > Electrical and Computer Engineering
Refereed: Yes
ISSN: 1041-1135
Date Deposited: 21 Oct 2014 16:33
Last Modified: 15 Jan 2021 15:55


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