Analysis of fibre optic evanescent wave sensor for the rapid detection of organic pollutants in drinking water sources

Abstract

Fibre optic evanescent wave (FOEW) sensor is an optical-based technology used to detect organic pollutants in drinking water sources quickly and efficiently. It utilizes the interaction of evanescent waves with a sensitive coating to identify optical changes that indicate the presence of organic contaminants. This research examines the working principle of the FOEW sensor, including the ability to detect volatile organic compounds in water at low concentrations of up to 10 ppb within five minutes. FOEW technology offers various advantages, such as corrosion resistance, fast response, low cost, and ease of real-time online measurement. Results show that FOEW sensors have high sensitivity for detecting organic contaminants and provide accurate data for water quality monitoring. These findings demonstrate the great potential of FOEW sensors as a reliable environmental monitoring tool, particularly in detecting water pollution due to human activities.