Feasibility analysis of an SMS-/MSM-/SMSMS-based optical fiber sensor structure
Xuecheng Liu, Muyang Li, Ragini Singh, Yiran Wang, Yiyan Xie, Xiancui Su, Feilong Gao, Guoru Li, Dharmendra Kumar, Bingyuan Zhang, Santosh Kumar
Abstract
The paper discusses the application of single-mode fiber (SMF) and multimode fiber (MMF) to the fabrication of a sensor structure based on the hetero-core optical fiber structure. The proposed structures are SMF-MMF-SMF (SMS), MMF-SMF-MMF (MSM), and SMF-MMF-SMF-MMF-SMF (SMSMS). The transmitted intensity of the probe is used to estimate the strength of the evanescent field. The results indicate that the SMSMS structure generates more evanescent waves that penetrate deeper into the sensing probe, increasing its sensitivity. As a result, the SMSMS structure has enormous development potential in the field of sensing.