Journal
OPTIK
Volume 127, Issue 22, Pages 10740-10745Publisher
ELSEVIER GMBH
DOI: 10.1016/j.ijleo.2016.08.110
Keywords
Fiber Bragg grating (FBG); CrN-coated FBG sensor; Bragg wavelength shift; Temperature sensitivity
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Funding
- Ministry of Science and Technology, Taiwan [MOST 103-2221-E-151-009-MY3]
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This paper focuses on the performance of a metal-coated fiber Bragg grating (FBG) used as a high temperature sensor. Specifically, the performance of a chromium nitride (CrN)-coated FBG sensor was evaluated in extreme temperature environments. Using an optical spectrum analyzer (OSA), the reflection spectra of the CrN-coated FBG sensor were measured and compared with those of bare FBG for temperatures ranging from 100 degrees C to 650 degrees C. In this way, the Bragg wavelength shift and temperature sensitivity of both types of FBG were obtained. The results indicated that the CrN-coated FBG sensor exhibited a 14.0 pm/degrees C greater temperature sensitivity than the bare FBG. (C) 2016 Elsevier GmbH. All rights reserved.
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