Study And Analysis Of Power Attenuation Due To Optical Bend Loss In OPGW Overhead Transmission In Malaysia

This thesis presents a study in detecting the optical fiber bending on long distance Optical Ground Wire (OPGW) using Optical Time-Domain Reflectometer (OTDR) in order to eliminate the bend loss and improve the optical power attenuation. This thesis also present the investigation and analysis of th...

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Main Author:	Mohamad Salleh, Mohamad Fazli
Format:	Thesis
Language:	English English
Published:	2016
Subjects:	T Technology (General)
Online Access:	http://eprints.utem.edu.my/id/eprint/18374/1/Study%20And%20Analysis%20Of%20Power%20Attenuation%20Due%20To%20Optical%20Bend%20Loss%20In%20OPGW%20Overhead%20Transmission%20In%20Malaysia.pdf http://eprints.utem.edu.my/id/eprint/18374/2/Study%20And%20Analysis%20Of%20Power%20Attenuation%20Due%20To%20Optical%20Bend%20Loss%20In%20OPGW%20Overhead%20Transmission%20In%20Malaysia.pdf
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id	my-utem-ep.18374
record_format	uketd_dc
institution	Universiti Teknikal Malaysia Melaka
collection	UTeM Repository
language	English English
topic	T Technology (General) T Technology (General)
spellingShingle	T Technology (General) T Technology (General) Mohamad Salleh, Mohamad Fazli Study And Analysis Of Power Attenuation Due To Optical Bend Loss In OPGW Overhead Transmission In Malaysia
description	This thesis presents a study in detecting the optical fiber bending on long distance Optical Ground Wire (OPGW) using Optical Time-Domain Reflectometer (OTDR) in order to eliminate the bend loss and improve the optical power attenuation. This thesis also present the investigation and analysis of the performance and characteristic of bend loss and optical power attenuation for OPGW over a long period of time as well as to validate the impact of bend loss on optical fiber attenuation through experimental works on site. Bending fiber optic is important to be detected because a fiber optic that has a bending radius smaller than its critical radius will attenuate optical power and cause the data sent through the fiber optic to be partially lost or totally lost. The study involved the process of collecting optical fiber data that provided by Tenaga Nasional Berhad (TNB) for a period of 10 months. This research is the first effort of its kind where data from actual OPGW are collected and presented to the public. All data were obtained from the existing 54.554 km OPGW laid from Main Substation 275kV Batu Pahat Timur (BPHE) to Main Substation 275kV Yong Peng Utara (YGPN). Two different data sets were obtained from this optical fiber, which are optical power attenuation and point of optical power loss, using the Power Meter test and OTDR test respectively. The analysis study is presented in this thesis and the study to detect the presence of bending optical fiber involves several processes, such as measuring the optical power attenuation, detecting the point of optical power loss and comparing the loss value of different wavelengths, 1310 nm and 1550 nm. In this thesis, the study on bend losses and power attenuation of optical fiber led to the discovery of the relationship between bend losses due to the bending of optical fiber, with the attenuation of fiber. From the experiment designed in this study, the effects of permanent bending on loss and attenuation is discovered as well as the discovery that the bending of optical fiber can occur naturally over time and the value of losses are varied with significant effects when the level of wavelength increased. From the analysis, the location of the bending fiber optic is identified and it is found that the actual location of bending optical fiber is in agreement with the analysis result. Once the location of the bending fiber optic have been found, the bending optical fiber is then released to observe the effect of that bending on optical power loss. The main benefit of this study is that the location of the bending fiber optic can be detected using OTDR and the ability to compare wavelengths at a particular point. The results also found that the quality of optical fiber decreases at 0.19 dB for 1310 nm and 4.85 dB for 1550 nm after a period of monitoring due to bending that occurs naturally but fortunately, it does not give a permanent effect at the point bending where after rectification, the quality has improved at 0.49 dB for 1310 nm and 7.17 dB for 1550 nm. It is also found that bend loss kept occurring and scattered at several points. This study of detecting bending fiber optic is suitable and an alternative solution to overcome the problem of reduced fiber optic performance for long distance fiber optic cable in a long period of time.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Mohamad Salleh, Mohamad Fazli
author_facet	Mohamad Salleh, Mohamad Fazli
author_sort	Mohamad Salleh, Mohamad Fazli
title	Study And Analysis Of Power Attenuation Due To Optical Bend Loss In OPGW Overhead Transmission In Malaysia
title_short	Study And Analysis Of Power Attenuation Due To Optical Bend Loss In OPGW Overhead Transmission In Malaysia
title_full	Study And Analysis Of Power Attenuation Due To Optical Bend Loss In OPGW Overhead Transmission In Malaysia
title_fullStr	Study And Analysis Of Power Attenuation Due To Optical Bend Loss In OPGW Overhead Transmission In Malaysia
title_full_unstemmed	Study And Analysis Of Power Attenuation Due To Optical Bend Loss In OPGW Overhead Transmission In Malaysia
title_sort	study and analysis of power attenuation due to optical bend loss in opgw overhead transmission in malaysia
granting_institution	Universiti Teknikal Malaysia Melaka
granting_department	Faculty of Electronic and Computer Engineering
publishDate	2016
url	http://eprints.utem.edu.my/id/eprint/18374/1/Study%20And%20Analysis%20Of%20Power%20Attenuation%20Due%20To%20Optical%20Bend%20Loss%20In%20OPGW%20Overhead%20Transmission%20In%20Malaysia.pdf http://eprints.utem.edu.my/id/eprint/18374/2/Study%20And%20Analysis%20Of%20Power%20Attenuation%20Due%20To%20Optical%20Bend%20Loss%20In%20OPGW%20Overhead%20Transmission%20In%20Malaysia.pdf
_version_	1747833925649039360
spelling	my-utem-ep.183742021-10-08T13:16:29Z Study And Analysis Of Power Attenuation Due To Optical Bend Loss In OPGW Overhead Transmission In Malaysia 2016 Mohamad Salleh, Mohamad Fazli T Technology (General) TA Engineering (General). Civil engineering (General) This thesis presents a study in detecting the optical fiber bending on long distance Optical Ground Wire (OPGW) using Optical Time-Domain Reflectometer (OTDR) in order to eliminate the bend loss and improve the optical power attenuation. This thesis also present the investigation and analysis of the performance and characteristic of bend loss and optical power attenuation for OPGW over a long period of time as well as to validate the impact of bend loss on optical fiber attenuation through experimental works on site. Bending fiber optic is important to be detected because a fiber optic that has a bending radius smaller than its critical radius will attenuate optical power and cause the data sent through the fiber optic to be partially lost or totally lost. The study involved the process of collecting optical fiber data that provided by Tenaga Nasional Berhad (TNB) for a period of 10 months. This research is the first effort of its kind where data from actual OPGW are collected and presented to the public. All data were obtained from the existing 54.554 km OPGW laid from Main Substation 275kV Batu Pahat Timur (BPHE) to Main Substation 275kV Yong Peng Utara (YGPN). Two different data sets were obtained from this optical fiber, which are optical power attenuation and point of optical power loss, using the Power Meter test and OTDR test respectively. The analysis study is presented in this thesis and the study to detect the presence of bending optical fiber involves several processes, such as measuring the optical power attenuation, detecting the point of optical power loss and comparing the loss value of different wavelengths, 1310 nm and 1550 nm. In this thesis, the study on bend losses and power attenuation of optical fiber led to the discovery of the relationship between bend losses due to the bending of optical fiber, with the attenuation of fiber. From the experiment designed in this study, the effects of permanent bending on loss and attenuation is discovered as well as the discovery that the bending of optical fiber can occur naturally over time and the value of losses are varied with significant effects when the level of wavelength increased. From the analysis, the location of the bending fiber optic is identified and it is found that the actual location of bending optical fiber is in agreement with the analysis result. Once the location of the bending fiber optic have been found, the bending optical fiber is then released to observe the effect of that bending on optical power loss. The main benefit of this study is that the location of the bending fiber optic can be detected using OTDR and the ability to compare wavelengths at a particular point. The results also found that the quality of optical fiber decreases at 0.19 dB for 1310 nm and 4.85 dB for 1550 nm after a period of monitoring due to bending that occurs naturally but fortunately, it does not give a permanent effect at the point bending where after rectification, the quality has improved at 0.49 dB for 1310 nm and 7.17 dB for 1550 nm. It is also found that bend loss kept occurring and scattered at several points. This study of detecting bending fiber optic is suitable and an alternative solution to overcome the problem of reduced fiber optic performance for long distance fiber optic cable in a long period of time. 2016 Thesis http://eprints.utem.edu.my/id/eprint/18374/ http://eprints.utem.edu.my/id/eprint/18374/1/Study%20And%20Analysis%20Of%20Power%20Attenuation%20Due%20To%20Optical%20Bend%20Loss%20In%20OPGW%20Overhead%20Transmission%20In%20Malaysia.pdf text en public http://eprints.utem.edu.my/id/eprint/18374/2/Study%20And%20Analysis%20Of%20Power%20Attenuation%20Due%20To%20Optical%20Bend%20Loss%20In%20OPGW%20Overhead%20Transmission%20In%20Malaysia.pdf text en validuser https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=100152 mphil masters Universiti Teknikal Malaysia Melaka Faculty of Electronic and Computer Engineering 1. Abramczyk, H., 2008. Dispersion Phenomena in Optical Fibers, Poland : Technical University of Lodz. 2. Anonymous, 2007. 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Study And Analysis Of Power Attenuation Due To Optical Bend Loss In OPGW Overhead Transmission In Malaysia

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