Optimization and Analysis of a Palladium-Coated Tapered Optical Fiber-Based Hydrogen Sensor

Abstract

This study presents a hydrogen sensor design and simulation using optical fiber and COMSOL Multiphysics. The sensor consists of a palladium-coated tapered optical fiber that transforms upon detecting hydrogen, altering optical properties linked to hydrogen concentration. Simulations show the sensor's response varies with light wavelength, adjustable via parameters like taper diameter and interaction length. Notably, the sensor is highly sensitive, detecting even low hydrogen levels (<4%) with noticeable transmission shifts. It's easily evaluated using LED and photodetector, highlighting its potential for hydrogen detection in energy storage contexts. © 2023 IEEE.