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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
High-resolution optical refractometer based on a long-period grating Michelson interferometer using a cross-correlation signal-processing method
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论文类型：期刊论文
发表时间：2015-12-01
发表刊物：OPTICAL ENGINEERING
收录刊物：SCIE、EI、Scopus
卷号：54
期号：12
ISSN号：0091-3286
关键字：optical fiber sensors; refractive index sensing; long-period grating; Michelson interferometer
摘要：We report a high-resolution optical refractometer based on the long-period grating Michelson interferometer. The interferometer phase shift depends on the refractive index that surrounds the fiber probe. A cross-correlation signal-processing method is used to demodulate the interferometer phase shift. Experimental results show that a resolution of 3 x 10(-6) refractive index unit (RIU) can be obtained using this cross-correlation signal processing method. In addition, a measurement sensitivity up to 3 x 10(3) deg/RIU is showed as the surrounding refractive index changing from 1.33 to 1.42. Such high-resolution and low-cost optical refractometers would find more applications in chemical or biochemical sensing fields. (C) 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)