Curvature Sensing Measurement Based on Seven-Core Fiber and Few-Mode Fiber Splicing Structure

被引：4
|
作者：
Xu Xining [1 ,3 ]
Chen Yongjun [2 ]
机构：
[1] Beijing Jiaotong Univ, Sch Mech Elect & Control Engn, Beijing 100044, Peoples R China
[2] Beijing Univ Civil Engn & Architecture, Sch Econ & Management Engn, Beijing 100044, Peoples R China
[3] Beijing Jiaotong Univ, Key Lab Vehicle Adv Mfg Measuring & Control Techn, Minist Educ, Beijing 100044, Peoples R China
来源：
ACTA OPTICA SINICA | 2019年 / 39卷 / 03期
关键词：
fiber optics; curvature sensor; seven-core fiber; few-mode fiber; MACH-ZEHNDER INTERFEROMETER; SENSOR;
D O I：
10.3788/AOS201939.0306001
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Based on the different deformations of optical fibers under different bending curvatures, a novel optical fiber curvature sensor is proposed and demonstrated based on seven-core fiber (SCF) and few-mode fiber (FMF). In the experiment, three kinds of sensors with different structures arc prepared, and their interference modes arc analyzed with the fast Fourier transform (FFT) method. The sensing sensitivities of wavelength arc 6.33, 30.83, 15.96 nm/m, respectively, while the sensing sensitivities of intensity arc 8.57, 25.65, 1.96 dB/m, respectively.
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页数：7
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