Xiangwen Yang, Binbin Luo, Shenghui Shi, Xue Zou, Decao Wu, Huiji Chen, Yujie Li, Hong Gu, Mingfu Zhao. High-Sensitivity Temperature Sensor Based on Sandwich Multimode Fiber Mach-Zehnder Interferometer with Virtual Vernier Effect[J]. Laser & Optoelectronics Progress, 2023, 60(17): 1706002