文献类型：期刊文献

英文题名：Large-range liquid level sensor based on an optical fibre extrinsic Fabry-Perot interferometer

作者：Wang, Wenhua[1];Li, Fang[2]

机构：[1]Guangdong Ocean Univ, Sch Sci, Zhanjiang 524088, Peoples R China;[2]Dalian Univ Technol, Sch Phys & Optoelect Engn, Dalian 116024, Peoples R China

年份：2014

卷号：52

期号：1

起止页码：201

外文期刊名：OPTICS AND LASERS IN ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:000326317700028)、、EI(收录号：20133916789407)、Scopus(收录号：2-s2.0-84884502144)、WOS

语种：英文

外文关键词：Optical fibre sensor; Extrinsic Fabry-Perot interferometer; Large-range liquid level measurement; Laser heating fusion bonding; Temperature cross-sensitivity

外文摘要：We propose an efficient approach to develop large-range liquid level sensors based on an extrinsic Fabry-Perot optical fibre interferometer with an all fused-silica structure and CO2 laser heating fusion bonding technology. The sensor exhibits signatures of a high sensitivity of 5.3 nm/kPa (36.6 nm/psi), a resolution of 6.8 Pa (9.9 x 10(-4) psi) and an extreme low temperature dependence of 0.013 nm/degrees C. As a result, a high resolution of the water level measurement of approximately 0.7 mm on the length scale of 5 m and small errors of the water pressure measurement induced by the temperature dependence within 0.0025 kPa/degrees C (0.00036 psi/degrees C, water level 0.25 mm/degrees C) are achieved, thus providing useful applications for the detection of the large-range liquid level in harsh environments. (C) 2013 Elsevier Ltd. All rights reserved.