Metal-coated fiber Bragg grating for dynamic temperature sensor

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• 作者：Te-Ching Hsiao ; Tso-Sheng Hsieh ; Yi-Chian Chen ; Shyh-Chour Huang ; Chia-Chin Chiang ; ^{ccchiang@kuas.edu.tw" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Fiber Bragg grating (FBG) ; CrN-coated FBG sensor ; Bragg wavelength shift ; Temperature sensitivity
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：127
• 期：22
• 页码：10740-10745
• 全文大小：1040 K

文摘

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 °C to 650 °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/°C greater temperature sensitivity than the bare FBG.