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...
| Main Author: | |
|---|---|
| Format: | Thesis |
| Language: | English English English |
| Published: |
2022
|
| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/8284/ 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_ | 1848889353925820416 |
|---|---|
| author | Sulaiman, Nazrah Ilyana |
| author_facet | Sulaiman, Nazrah Ilyana |
| author_sort | Sulaiman, Nazrah Ilyana |
| building | UTHM Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-15T20:24:50Z |
| format | Thesis |
| id | uthm-8284 |
| institution | Universiti Tun Hussein Onn Malaysia |
| institution_category | Local University |
| language | English English English |
| last_indexed | 2025-11-15T20:24:50Z |
| publishDate | 2022 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | uthm-82842023-02-07T03:44:08Z http://eprints.uthm.edu.my/8284/ Unclad plastic optical fiber temperature sensor with a balloon-like structure 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 NonPeerReviewed text en http://eprints.uthm.edu.my/8284/1/24p%20NAZRAH%20ILYANA%20SULAIMAN.pdf text en http://eprints.uthm.edu.my/8284/2/NAZRAH%20ILYANA%20SULAIMAN%20COPYRIGHT%20DECLARATION.pdf text en http://eprints.uthm.edu.my/8284/3/NAZRAH%20ILYANA%20SULAIMAN%20WATERMARK.pdf Sulaiman, Nazrah Ilyana (2022) Unclad plastic optical fiber temperature sensor with a balloon-like structure. Masters thesis, Universiti Tun Hussein Onn Malaysia. |
| spellingShingle | T Technology (General) Sulaiman, Nazrah Ilyana Unclad plastic optical fiber temperature sensor with a balloon-like structure |
| title | 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_short | Unclad plastic optical fiber temperature sensor with a balloon-like structure |
| title_sort | unclad plastic optical fiber temperature sensor with a balloon-like structure |
| topic | T Technology (General) |
| url | http://eprints.uthm.edu.my/8284/ 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 |