Work

Numerical and experimental analysis of a side -polished single-mode fiber for refractive index sensing

Year: 2025

Type: article

Abstract: In this paper, we introduced a comprehensive study, based on both numerical and experimental analyses, of side polished (SP) single mode fibers (SMF) to investigate their evanescent field interaction with air and liquid analytes. In particular, the finite element method (FEM) and the beam propagation method (BPM) are employed to predict the optical properties of the SP-SMF. An ad-hoc experimental setup has been designed and built to characterize the side polished single mode fiber when air, water, and isopropanol are set in the side polished region. The sensitivity of the analytes is obtained as 1.207 V/RIU. The performance in terms of effective refractive index and transmittance are reported to show how these SP-SMF can be efficiently used for calculating the liquid refractive index. The simulation and experimental results display the significant performance of the SP-SMF as a sensing element.

Source: Advanced Optical Technologies

DOI: 10.3389/aot.2025.1560454

Authors: Muhammad Musavir Bilal, Ajmal Thottoli, Servando Lopez-Aguayo, Marco Grande

Institutions: Polytechnic University of Bari, Tecnológico de Monterrey

Language: English

Topic: Advanced Fiber Optic Sensors

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,353

Funder: Instituto Tecnológico y de Estudios Superiores de Monterrey