Development of optical microfiber sensor for humidity detection

Ahmad Zaini, Abdul Hafiz (2023) Development of optical microfiber sensor for humidity detection. Project Report. Melaka, Malaysia, Universiti Teknikal Malaysia Melaka. (Submitted)

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Abstract

This research describes the development of an effective optical microfiber sensor for humidity detection. As for the objective of this project is to study the operation and the performance of humidity sensor by using optical microfiber technology, to develop the humidity sensor using optical microfiber and testing its sensitivity and performance in several humidity level tests, and last but not least to analyze the performance of Humidity Sensor using optical microfiber in different environment and experiments. The technique of producing a new size of optical microfiber is through tapering or D-shape but in this it using tapering. Basically tapering is a firing the fiber until the size of fiber up to the smallest size before it going to broken. For this project, it managed to get to 7.8 um with different wavelength (1310nm and 1550nm) for testing. In this project, the sensitivity and linearity of the sensoring are the findings due to the comparison value of gradient and R2 based on the graph from OTDR. From all the comparison results, we can know the best ideal of wavelength for sensoring. Hence, it shows that we managed to fulfilled the objectives.

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