期刊
MEASUREMENT SCIENCE AND TECHNOLOGY
卷 25, 期 7, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0957-0233/25/7/075105
关键词
FBG; ocean; temperature; sensor; fast-response; package
资金
- National Nature Science Foundation of China [41276094]
- Strategic Priority Research Program [XDA110-40201]
Aimed at the requirement for a fast-response expendable ocean temperature sensor, this paper presents a new design scheme for an optic fiber sensor. Ocean temperature sensors require high sensitivity and high response speed, which must be up to milliseconds. The fiber Bragg grating (FBG) temperature sensor with high sensitivity has been declared in the last decade, but its response speed has been rarely reported. In this paper, a method is proposed which is to package an FBG with a metal tube. The response time of this sensor is 48.6 ms, which is an order of magnitude greater than that of an ordinary optical fiber temperature sensor. Temperature sensitivity is 27.6 pm/degrees C and the linearity is up to 0.9999. In addition, the sensor can be less than 15 mm. It offers a new way to detect ocean temperature.
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