Development of optical microfiber sensor for liquid concentration detection

Sures, Nagavalli (2024) Development of optical microfiber sensor for liquid concentration detection. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This project outlines the comprehensive development of an optical microfiber sensor designed for liquid concentration detection. The primary objective is to overcome the intricate challenges associated with designing and fabricating tapered optical fiber sensors. The innovative approach employs tapering, a meticulous heating process that reduces the fiber size without compromising its integrity, resulting in an optical microfiber size of ≤ 12 µm ideal for the sensor's intended operation. To assess the sensor's performance, two distinct wavelengths, namely 1310 nm and 1550 nm, were employed, enabling a thorough examination of their impact on accuracy and reliability in liquid concentration detection. The sensitivity and linearity of the sensor were meticulously evaluated by comparing gradient and R^2 values extracted from the optical wavelength graph. The insightful findings affirm the project's success and contribute significantly to advancing sensor technology. The research fills a critical knowledge gap, particularly in industrial and biomedical applications. For example, cosmetics industries require precise shampoo concentration monitoring, and biomedical contexts need accurate analyte detection in fluids. Conventional sensor limitations, like high costs and a lack of real-time monitoring, highlight the need for innovative solutions. This project aims to advance sensing technologies and address drawbacks in conventional sensors. The proposed solution has the potential to provide cost-effective, real-time sensing, contributing to progress in process optimization, quality control, and biomedical diagnostics. Successful attainment of the project's objectives will culminate in the development of reliable and versatile optical microfiber sensors with promising applications across various industries, underscoring the transformative impact of this research in diverse fields.

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