Optical fiber curvature sensor based on polydimethylsiloxane encapsulated Mach-Zehnder interferometer

被引：1

作者：

Mangue, Paulino Mba Ndong ^{[1
]}

Shen, Jiajun ^{[1
]}

Li, Lijun ^{[1
]}

机构：

[1] Shandong Univ Sci & Technol, Coll Elect & Informat Engn, Qingdao, Shandong, Peoples R China

来源：

OPTICAL ENGINEERING | 2020年 / 59卷 / 11期

关键词：

fiber optics; curvature sensor; polydimethylsiloxane; Mach-Zehnder interferometer; GRATINGS;

D O I：

10.1117/1.OE.59.11.116111

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An all-optical fiber curvature sensor is proposed, which is composed of a polydimethylsiloxane elastic material encapsulated all-optical fiber Mach-Zehnder interferometer, and its bending characteristics are demonstrated. Our experimental results show that the output spectrum of the sensor is sensitive to the curvature of the bend angle with a result of interferent dip wavelength drift with it. The curvature sensitivity of the sensor presents 205.36 nm/cm(-1) with 98.27% linearity in the curvature range from 0.03 to 0.08 cm(-1). The temperature sensitivity is 0.1235 nm/degrees C in 35 degrees C to 105 degrees C range. This sensor structure also has the advantages of small size, low cost, and easy fabrication, which means it has potential applications in robots, artificial intelligence, aerospace, and so on. (C) 2020 Society of Photo-Optical Instrumentation Engineers (SPIE)

引用

页数：7

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