个人信息Personal Information
副教授
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:光电工程与仪器科学学院
学科:光学工程
办公地点:物理学院233房间
联系方式:xlzhou@dlut.edu.cn
电子邮箱:xlzhou@dlut.edu.cn
Fiber-optic Mach-Zehnder interferometric sensor for high-sensitivity high temperature measurement
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论文类型:期刊论文
发表时间:2013-07-15
发表刊物:OPTICS COMMUNICATIONS
收录刊物:SCIE、EI
卷号:300
页面范围:194-198
ISSN号:0030-4018
关键字:Optical fiber; Sensor; Temperature; Sensitivity; Optical interferometry
摘要:We present a novel fiber-optic Mach-Zehnder interferometeric (MZI) sensor for highly-sensitive and high temperature measurement. The fiber-optic MZI is constructed using a piece of multimode fiber (MMF) sandwiched between a single mode fiber (SMF) and a sensing tapered SMF. The MMF is used to excite the cladding modes in the sensing SMF. The core mode interferes strongly with the cladding modes in the sensing fiber at the tapered region, generating interference fringes in the transmission spectrum that are sensitive to temperature. Numerical simulation results using the finite-difference time-domain method agree well with the experimental results. Some prototype sensor probes are fabricated and characterized. We measure the wavelength shift of an interference dip as temperature change from room temperature to 850 degrees C. A sensor prototype with 2 cm sensing length exhibits a sensitivity of 85.8 pm/degrees C in the temperature range of 100-400 degrees C and 128.6 pm/degrees C in the range from 400 degrees C to 850 degrees C. This sensor can be further developed as a compact and economic high-temperature sensor for harsh environment application. (C) 2013 Elsevier B.V. All rights reserved.