2018年2月1日
Resolution enhancement of fiber Bragg grating temperature sensor using a cavity ring-down technique
Japanese Journal of Applied Physics
- ,
- 巻
- 57
- 号
- 2
- 開始ページ
- 028002
- 終了ページ
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.7567/JJAP.57.028002
- 出版者・発行元
- Japan Society of Applied Physics
A new technique for enhancing the measurement resolution of a fiber Bragg grating (FBG) temperature sensor is proposed. This technique uses a cavity ring-down approach to amplify optical intensity by accumulating unremarkable intensity changes. A wavelength-stabilized optical pulse with a width of 10 ns rotates several times inside an optical fiber loop that contains a FBG sensor. In other words, the loop system functions as an integrator of slight intensity transition. A temperature resolution of at least 0.02 °C was achieved at 20.0 °C. Resolution with this technique is at least five times higher than previous techniques.
- ID情報
-
- DOI : 10.7567/JJAP.57.028002
- ISSN : 1347-4065
- ISSN : 0021-4922
- SCOPUS ID : 85042086979