马赫-曾德尔干涉仪
干涉测量
光学
折射率
光纤
包层(金属加工)
材料科学
光纤传感器
温度测量
包层模式
偏移量(计算机科学)
保偏光纤
物理
计算机科学
量子力学
冶金
程序设计语言
作者
Wenlin Gao,Weihua Zhang,Zhengrong Tong,Yimei Zhong,Juan Qin,Lifang Xue
出处
期刊:Optical Engineering
[SPIE - International Society for Optical Engineering]
日期:2019-05-09
卷期号:58 (05): 1-1
被引量:6
标识
DOI:10.1117/1.oe.58.5.057102
摘要
An optical fiber sensor for simultaneous measurement of refractive index (RI) and temperature is achieved by using an optical fiber Mach–Zehnder interferometer (MZI) with two core-offset trapezoid cone structures, in which part of the core mode light will be coupled into cladding modes when passing through the first trapezoid cone and the two parts of light will combine in the second one and interfere with each other over there. The transmission spectrum would vary with the RI and the temperature. The experimental data show that the RI sensitivities of the two interference valleys are −35.93 and −51.14 nm / RIU, respectively. The temperature sensitivities of them are 0.05 and 0.04 nm / ° C, respectively. Therefore, it can be realized to gauge the RI and the temperature simultaneously. The proposed sensor can also be applied to chemistry and biology which has broad application prospects.
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