Distributed single mode fiber sensor and fiber Bragg grating for displacement and temperature sensing / Nor Jannah Muhamad Satar

This dissertation discuss the research works on distributed optical fiber sensor system consisting of optical fiber-loop sensor incorporating fiber Bragg grating (FBG) for displacement and temperature detections. The fiber-loop sensor was designed using single mode fiber (SMF) to exhibit signal atte...

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Main Author:	Muhamad Satar, Nor Jannah
Format:	Thesis
Language:	English
Published:	2012
Subjects:	Engineering mathematics Engineering analysis
Online Access:	https://ir.uitm.edu.my/id/eprint/39830/1/39830.pdf
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spelling	my-uitm-ir.398302022-04-07T01:09:50Z Distributed single mode fiber sensor and fiber Bragg grating for displacement and temperature sensing / Nor Jannah Muhamad Satar 2012-10 Muhamad Satar, Nor Jannah Engineering mathematics. Engineering analysis Mechanics of engineering. Applied mechanics This dissertation discuss the research works on distributed optical fiber sensor system consisting of optical fiber-loop sensor incorporating fiber Bragg grating (FBG) for displacement and temperature detections. The fiber-loop sensor was designed using single mode fiber (SMF) to exhibit signal attenuation due to the macrobending perturbation in the optical fiber. A novel fiber-loop design was used to investigate the optical attenuation due to macrobending effect in the fiber-loop. The bending effect would cause higher optical signal loss when the fiber-loop diameter is further reduced due to the force action of displacement The single mode fiber sensor (SMF-sensor) was characterized using optical time domain reflectometer (OTDR), optical spectrum analyzer (OSA), and optical power meter (0PM and OFM). Single SMF-sensor was characterized and the result was used in developing a distributed sensing system consists of three SMF-sensors along the monitoring line. The SMF-sensor is capable to detect faults simultaneously at several different locations. The fiber-loop sensing head has a sensitivity of 0.044 dB/mm and 0.024 dB/mm measured using OTDR and OSA respectively. OTDR provides higher sensitivity in detecting displacement per millimetre unit besides precisely locate the fault point. The SMF-sensor was installed on lab—scale hill-slope simulator to test the response of the optical signal when the slope structure was displaced at different directions. SMF- sensor gives higher responsive when detecting displacement in horizontal-direction with a recorded sensitivity of 0.175 dB/mm and able to detect ground displacement initially at 5±0.1mm displacement. FBG incorporated m the system served as temperature sensor. FBG recorded a sensitivity of 0.01 nm/°C when detected temperature changes. 2012-10 Thesis https://ir.uitm.edu.my/id/eprint/39830/ https://ir.uitm.edu.my/id/eprint/39830/1/39830.pdf text en public masters Universiti Teknologi MARA Faculty of Applied Science Abdul Rahman, Mohd Kamil (Prof. Dr.)
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Abdul Rahman, Mohd Kamil (Prof. Dr.)
topic	Engineering mathematics Engineering analysis Engineering mathematics Engineering analysis
spellingShingle	Engineering mathematics Engineering analysis Engineering mathematics Engineering analysis Muhamad Satar, Nor Jannah Distributed single mode fiber sensor and fiber Bragg grating for displacement and temperature sensing / Nor Jannah Muhamad Satar
description	This dissertation discuss the research works on distributed optical fiber sensor system consisting of optical fiber-loop sensor incorporating fiber Bragg grating (FBG) for displacement and temperature detections. The fiber-loop sensor was designed using single mode fiber (SMF) to exhibit signal attenuation due to the macrobending perturbation in the optical fiber. A novel fiber-loop design was used to investigate the optical attenuation due to macrobending effect in the fiber-loop. The bending effect would cause higher optical signal loss when the fiber-loop diameter is further reduced due to the force action of displacement The single mode fiber sensor (SMF-sensor) was characterized using optical time domain reflectometer (OTDR), optical spectrum analyzer (OSA), and optical power meter (0PM and OFM). Single SMF-sensor was characterized and the result was used in developing a distributed sensing system consists of three SMF-sensors along the monitoring line. The SMF-sensor is capable to detect faults simultaneously at several different locations. The fiber-loop sensing head has a sensitivity of 0.044 dB/mm and 0.024 dB/mm measured using OTDR and OSA respectively. OTDR provides higher sensitivity in detecting displacement per millimetre unit besides precisely locate the fault point. The SMF-sensor was installed on lab—scale hill-slope simulator to test the response of the optical signal when the slope structure was displaced at different directions. SMF- sensor gives higher responsive when detecting displacement in horizontal-direction with a recorded sensitivity of 0.175 dB/mm and able to detect ground displacement initially at 5±0.1mm displacement. FBG incorporated m the system served as temperature sensor. FBG recorded a sensitivity of 0.01 nm/°C when detected temperature changes.
format	Thesis
qualification_level	Master's degree
author	Muhamad Satar, Nor Jannah
author_facet	Muhamad Satar, Nor Jannah
author_sort	Muhamad Satar, Nor Jannah
title	Distributed single mode fiber sensor and fiber Bragg grating for displacement and temperature sensing / Nor Jannah Muhamad Satar
title_short	Distributed single mode fiber sensor and fiber Bragg grating for displacement and temperature sensing / Nor Jannah Muhamad Satar
title_full	Distributed single mode fiber sensor and fiber Bragg grating for displacement and temperature sensing / Nor Jannah Muhamad Satar
title_fullStr	Distributed single mode fiber sensor and fiber Bragg grating for displacement and temperature sensing / Nor Jannah Muhamad Satar
title_full_unstemmed	Distributed single mode fiber sensor and fiber Bragg grating for displacement and temperature sensing / Nor Jannah Muhamad Satar
title_sort	distributed single mode fiber sensor and fiber bragg grating for displacement and temperature sensing / nor jannah muhamad satar
granting_institution	Universiti Teknologi MARA
granting_department	Faculty of Applied Science
publishDate	2012
url	https://ir.uitm.edu.my/id/eprint/39830/1/39830.pdf
_version_	1783734545882808320

Distributed single mode fiber sensor and fiber Bragg grating for displacement and temperature sensing / Nor Jannah Muhamad Satar

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