光学学报, 2019, 39 (3): 0306001, 网络出版: 2019-05-10
基于七芯光纤和少模光纤拼接结构的曲率传感测量 
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Curvature Sensing Measurement Based on Seven-Core Fiber and Few-Mode Fiber Splicing Structure
摘要
利用光纤在不同弯曲曲率下的不同形变,提出并验证了一种基于七芯光纤和少模光纤的新型光纤曲率传感器。分别制作了三种不同结构的传感器,利用快速傅里叶变换分析了它们的干涉模式,获得波长的传感灵敏度分别为6.33,30.83,15.96 nm/m,强度的传感灵敏度分别为8.57,25.65,1.96 dB/m。
Abstract
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 are prepared, and their interference modes are analyzed with the fast Fourier transform (FFT) method. The sensing sensitivities of wavelength are 6.33, 30.83, 15.96 nm/m, respectively, while the sensing sensitivities of intensity are 8.57, 25.65, 1.96 dB/m, respectively.
许西宁, 陈雍君. 基于七芯光纤和少模光纤拼接结构的曲率传感测量[J]. 光学学报, 2019, 39(3): 0306001. Xining Xu, Yongjun Chen. Curvature Sensing Measurement Based on Seven-Core Fiber and Few-Mode Fiber Splicing Structure[J]. Acta Optica Sinica, 2019, 39(3): 0306001.
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