Unclad plastic optical fiber temperature sensor with a balloon-like structure

An unclad plastic optical fiber (POF) temperature sensor with high sensitivity is experimentally demonstrated in this work. The working principle of this developed unclad POF sensor is based on intensity-modulated technique. In general, position and length of the unclad region in this developed s...

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Main Author:	Sulaiman, Nazrah Ilyana
Format:	Thesis
Language:	English English English
Published:	2022
Subjects:	T Technology (General)
Online Access:	http://eprints.uthm.edu.my/8284/1/24p%20NAZRAH%20ILYANA%20SULAIMAN.pdf http://eprints.uthm.edu.my/8284/2/NAZRAH%20ILYANA%20SULAIMAN%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/8284/3/NAZRAH%20ILYANA%20SULAIMAN%20WATERMARK.pdf
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id	my-uthm-ep.8284
record_format	uketd_dc
spelling	my-uthm-ep.82842023-02-07T03:44:08Z Unclad plastic optical fiber temperature sensor with a balloon-like structure 2022-03 Sulaiman, Nazrah Ilyana T Technology (General) An unclad plastic optical fiber (POF) temperature sensor with high sensitivity is experimentally demonstrated in this work. The working principle of this developed unclad POF sensor is based on intensity-modulated technique. In general, position and length of the unclad region in this developed sensor has influenced the output light intensity, thus, influencing the sensor performance. In this work, we fixed the location of the unclad region at the middle of the sensor head. As for the length of the unclad region, optical intensity measurement was carried out. It was observed that the increment of length in the unclad region contributed to the increase of intensity losses. Therefore, the unclad length of 1.0 cm was considered as the optimal value due to its higher linearity and optical loss performances and was used in the bending analysis for balloon-like bent POF sensor. The sensor was realized by combining macro bending and the unclad region in the fabrication of its sensor head. The POF sensor was bent to a balloon-like structure to introduce the effect of macro bending. For optimization of the sensor performances, the sensor bending radius was varied. Experimental results suggest that performances of the POF sensor are optimized when the bending radius is fixed at 55 mm. With this amount of bending radius, temperature sensitivity up to 22.2 x10-3 °C -1 was achieved in the range from 40 °C to 80 °C with the linearity of 0.99 and resolution of 0.45 °C. This technique improves the POF temperature sensitivity in comparison to previous developments. 2022-03 Thesis http://eprints.uthm.edu.my/8284/ http://eprints.uthm.edu.my/8284/1/24p%20NAZRAH%20ILYANA%20SULAIMAN.pdf text en public http://eprints.uthm.edu.my/8284/2/NAZRAH%20ILYANA%20SULAIMAN%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/8284/3/NAZRAH%20ILYANA%20SULAIMAN%20WATERMARK.pdf text en validuser mphil masters Universiti Tun Hussein Onn Malaysia Fakulti Kejuruteraan Elektrik dan Elektronik
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English English
topic	T Technology (General)
spellingShingle	T Technology (General) Sulaiman, Nazrah Ilyana Unclad plastic optical fiber temperature sensor with a balloon-like structure
description	An unclad plastic optical fiber (POF) temperature sensor with high sensitivity is experimentally demonstrated in this work. The working principle of this developed unclad POF sensor is based on intensity-modulated technique. In general, position and length of the unclad region in this developed sensor has influenced the output light intensity, thus, influencing the sensor performance. In this work, we fixed the location of the unclad region at the middle of the sensor head. As for the length of the unclad region, optical intensity measurement was carried out. It was observed that the increment of length in the unclad region contributed to the increase of intensity losses. Therefore, the unclad length of 1.0 cm was considered as the optimal value due to its higher linearity and optical loss performances and was used in the bending analysis for balloon-like bent POF sensor. The sensor was realized by combining macro bending and the unclad region in the fabrication of its sensor head. The POF sensor was bent to a balloon-like structure to introduce the effect of macro bending. For optimization of the sensor performances, the sensor bending radius was varied. Experimental results suggest that performances of the POF sensor are optimized when the bending radius is fixed at 55 mm. With this amount of bending radius, temperature sensitivity up to 22.2 x10-3 °C -1 was achieved in the range from 40 °C to 80 °C with the linearity of 0.99 and resolution of 0.45 °C. This technique improves the POF temperature sensitivity in comparison to previous developments.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Sulaiman, Nazrah Ilyana
author_facet	Sulaiman, Nazrah Ilyana
author_sort	Sulaiman, Nazrah Ilyana
title	Unclad plastic optical fiber temperature sensor with a balloon-like structure
title_short	Unclad plastic optical fiber temperature sensor with a balloon-like structure
title_full	Unclad plastic optical fiber temperature sensor with a balloon-like structure
title_fullStr	Unclad plastic optical fiber temperature sensor with a balloon-like structure
title_full_unstemmed	Unclad plastic optical fiber temperature sensor with a balloon-like structure
title_sort	unclad plastic optical fiber temperature sensor with a balloon-like structure
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Fakulti Kejuruteraan Elektrik dan Elektronik
publishDate	2022
url	http://eprints.uthm.edu.my/8284/1/24p%20NAZRAH%20ILYANA%20SULAIMAN.pdf http://eprints.uthm.edu.my/8284/2/NAZRAH%20ILYANA%20SULAIMAN%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/8284/3/NAZRAH%20ILYANA%20SULAIMAN%20WATERMARK.pdf
_version_	1776103318489137152

Unclad plastic optical fiber temperature sensor with a balloon-like structure

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