Development of a Multifunctional Optical Fiber Sensor Based on Tapered SNS Structure
DU Hao 1 ，FAN Guoliang 1，2，3 ，ZHANG Luqiang 1，2，3*
1．School of Physical Science and Technology，Inner Mongoha University，Hohhot 010021，China;2． National Demonstration
Center for Experimental Physics Education，Inner Mongoha University，Hohhot 010021，China;3．Key Laboratory of Biophysics and Bioinformatics of Inner Mongolia Autonomous Ｒegion，Inner Mongoha University，Hohhot 010021，China
Abstract: Based on the principle of multimode interference in optical fibers，a high-performance tapered Single-mode-No-core-Single-mode (SNS) fiber sensor was developed using fiber tapering technology．Experimental results demonstrate that the sensor exhibits outstanding performance in both solutionconcentration and environmental temperature detection．Compared to non-tapered fiber sensors，the tapered SNS fiber sensor achieves 57． 26% and 58． 04% improvement in sensitivity for concentration and temperature measurements，respectively． The device shows strong adaptability to various experimental scenarios，and exhibiting negligible cross-interference from temperature variations during concentration measurements．
Furthermore，a real-time optical power-concentration/temperature conversion module was developed，enabling simultaneous multi-parameter measurement with a rapid response time of approximately one second，which provides crucial technical support for commercial applications of this sensing system．
杜 浩, 樊国梁, 张璐强 . 基于锥形 SNS 结构的多功能光纤传感器研制[J]. 大学物理实验, 2025, 38(5): 38-45.
DU Hao, FAN Guoliang, ZHANG Luqiang. Development of a Multifunctional Optical Fiber Sensor Based on Tapered SNS Structure. Physical Experiment of College, 2025, 38(5): 38-45.
