光纤布拉格光栅
材料科学
光学
逐渐变细
灵敏度(控制系统)
干涉测量
光纤传感器
波长
熔接
光纤
拉伤
光电子学
物理
计算机图形学(图像)
电子工程
计算机科学
工程类
医学
内科学
作者
Lingya Lv,Sumei Wang,Lan Jiang,Fei Zhang,Zhang Cao,Peng Wang,Yi Jiang,Yongfeng Lu
出处
期刊:Applied optics
[The Optical Society]
日期:2015-12-17
卷期号:54 (36): 10678-10678
被引量:24
摘要
A compact optical fiber sensor for simultaneous measurement of strain and temperature is designed and experimentally investigated. The proposed sensor consists of a two-peanut-taper Mach–Zehnder interferometer (MZI) and in-line embedded fiber Bragg grating (FBG). The sensor at a length of 35 mm presents strain sensitivities 1.07 pm/με and 0.891 pm/με, the temperature sensitivities are 55.35 pm/°C and 10.85 pm/°C, for MZI and FBG, respectively. Through tapering the center of the sensor by a fusion splicer, the strain sensitivity of the MZI is improved to 1.93 pm/με. The resolutions for strain and temperature measurement are ±3.104 με and ±0.194°C with the wavelength resolution of 5 pm. The experimental results show that the sensor is able to simultaneously measure strain and temperature by sensitivity matrix with advantages such as simple structure, compact size, ease of fabrication, low cost, etc.
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