Laser image refractive index sensor based on the combination of a coreless optical fiber and a digital camera

作     者：GUO Jingzhong LAN Feng CHEN Xiang LIU Haifeng GUO Jingzhong;LAN Feng;CHEN Xiang;LIU Haifeng

作者机构：Xi’an Institute of Space Radio TechnologyXi’an 710100China Key Laboratory of Optoelectronic Sensor and Sensing Network TechnologyCollege of Electronic Information and Optical EngineeringNankai UniversityTianjin 300350China 

出 版 物：《Optoelectronics Letters》 (光电子快报(英文版))

年 卷 期：2025年第21卷第2期

页      面：65-68页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

主　　题：fiber scattering optical 

摘      要：As a laser passes through a scattering medium,the light interacts with the irregular reflections within the medium,resulting in light scattering and the formation of *** this paper,an image sensor based on the combination of a coreless optical fiber and a digital camera is proposed for liquid refractive index sensing *** coreless fiber is used as a sensing unit,and the change in the speckle pattern is measured using the digital correlation method to detect the magnitude of the liquid s refractive *** experimental results indicate that the laser image sensing technique is capable of effectively distinguishing liquid samples with refractive indices ranging from 1.332 8 to1.390 8,with a sensing sensitivity of-1.306 ***,the laser image sensing technique,with its advantages of high experimental reproducibility,simple system design,remote over-control,holds great research significance and potential application in laser communication and sensor integration.