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Active fiber Bragg grating hydrogen sensors for all-temperature operation

Buric, M and Chen, KP and Bhattarai, M and Swinehart, PR and Maklad, M (2007) Active fiber Bragg grating hydrogen sensors for all-temperature operation. IEEE Photonics Technology Letters, 19 (5). 255 - 257. ISSN 1041-1135

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The use of liquid hydrogen as a fuel requires low-cost multipoint sensing of hydrogen gas for leak detection and location well below the 4% explosion limit of hydrogen. Herein is presented a multipoint in-fiber hydrogen sensor capable of hydrogen detection below 0.5% concentration with a response time of less than 10 s. Our solution entails use of a fiber Bragg grating (FBG) coated with a layer of hydrogen-absorbing palladium which, in turn, induces strain in the FBG in the presence of hydrogen. Infrared power laser light is used to induce heating in the palladium coating which dramatically decreases sensor response time and increases the sensor's sensitivity at low temperatures. This technology promises an inexpensive fiber solution for a multipoint hydrogen detection array with only one fiber feed-through. © 2007 IEEE.


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Item Type: Article
Status: Published
CreatorsEmailPitt UsernameORCID
Buric, M
Chen, KPpec9@pitt.eduPEC90000-0002-4830-0817
Bhattarai, M
Swinehart, PR
Maklad, M
Date: 1 March 2007
Date Type: Publication
Journal or Publication Title: IEEE Photonics Technology Letters
Volume: 19
Number: 5
Page Range: 255 - 257
DOI or Unique Handle: 10.1109/lpt.2006.888973
Schools and Programs: Swanson School of Engineering > Electrical and Computer Engineering
Refereed: Yes
ISSN: 1041-1135
Date Deposited: 01 Jul 2014 17:37
Last Modified: 15 Jan 2021 15:55


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