Development of optical microfiber sensor for detecting concentrations of acidic solutions

Zuli Arman, Nurul Najiehah (2025) Development of optical microfiber sensor for detecting concentrations of acidic solutions. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

The development of optical microfiber sensors tailored for detecting concentrations of acidic solutions, specifically vinegar, addressed the need for precise and versatile sensing solutions in various industries. This study presented a comprehensive investigation focusing on fabricating functional single-mode fibers using the flame brushing technique, designing a measurement setup utilizing 1310 nm and 1550 nm input laser sources for acidic concentration detection, and evaluating the performance of microfiber sensors in detecting various concentrations of acidic solutions in vinegar. Through systematic evaluation of sensor performance metrics such as sensitivity, response time, and resolution, this research provided insights into optimizing sensor design and operation for enhanced efficiency in quantifying acidic solution concentrations. The objectives included fabricating optimized single-mode fibers, designing a versatile measurement setup for accurate assessment of acidic concentrations in vinegar, and systematically evaluating sensor performance metrics. Its stability and effectiveness in a variety of applications, such as chemical analysis, environmental monitoring, and food processing, were validated by experimental results. This study contributes to better quality control and process optimisation by developing optical sensing technology, which offers a workable and dependable option for companies needing continuous and accurate acidity detection.

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