The impact of brillouin pump pre-amplification on multiwavelength brillouin-erbium fiber laser in linear cavity

Multiwavelength Brillouin Erbium Fiber Lasers (BEFLs) gain interest in recent decades due to their inherent characteristics such as narrow linewidth, high optical power and single frequency. Generation of multiple wavelengths is realizable through combination of Brillouin and Erbium-Doped Fiber Ampl...

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Main Author:	Mohd Azhan, Mirsa Nurfarhan
Format:	Thesis
Language:	English English English
Published:	2019
Subjects:	QC501-766 Electricity and magnetism
Online Access:	http://eprints.uthm.edu.my/558/1/24p%20MIRSA%20NURFARHAN%20MOHD%20AZHAN.pdf http://eprints.uthm.edu.my/558/2/MIRSA%20NURFARHAN%20MOHD%20AZHAN%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/558/3/MIRSA%20NURFARHAN%20MOHD%20AZHAN%20WATERMARK.pdf
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spelling	my-uthm-ep.5582021-08-05T03:24:39Z The impact of brillouin pump pre-amplification on multiwavelength brillouin-erbium fiber laser in linear cavity 2019-09 Mohd Azhan, Mirsa Nurfarhan QC501-766 Electricity and magnetism Multiwavelength Brillouin Erbium Fiber Lasers (BEFLs) gain interest in recent decades due to their inherent characteristics such as narrow linewidth, high optical power and single frequency. Generation of multiple wavelengths is realizable through combination of Brillouin and Erbium-Doped Fiber Amplifier (EDFA) gain in the laser cavity. Recent developments of multiwavelength BEFL utilize virtual mirrors in their configuration and most of them amplify the Brillouin pump (BP) once before it oscillates in the laser cavity. Therefore, curiosity now arises as how the number of BP pre-amplification affects the performances of the multiwavelength BEFL. Aspired to answer the curiosity, the impact of BP pre-amplification on the multiwavelength BEFL is studied in this thesis. Comparison with three different schemes of without, single and double BP pre-amplification is carried out for the performance optimization. Experimental results suggest that the scheme with single BP pre-amplification achieves the best performances than the schemes of without and double BP pre-amplification. When the BP wavelength is set at 1550 nm, the scheme of single BP pre-amplification has 8 channels, which is higher than 4 channels for the scheme of double BP pre-amplification and 2 channels for the scheme without BP pre-amplification. For the threshold power meanwhile, the scheme with single BP pre-amplification records the lowest value of 6.8 mW as opposed to 13 mW and 12.7 mW recorded for the scheme of without and double BP pre-amplification respectively. In terms of stability, the scheme with double BP pre-amplification produces the most stable output spectra with 0.39 dB peak fluctuation in comparison to 17.3 dB and 2.44 dB for the scheme of without and single BP pre-amplification respectively. All in all, multiwavelength BEFL with single BP pre-amplification records the best performances with respect to the number of channels and threshold power but, the laser is found to be the most stable when employing double BP pre-amplification technique. 2019-09 Thesis http://eprints.uthm.edu.my/558/ http://eprints.uthm.edu.my/558/1/24p%20MIRSA%20NURFARHAN%20MOHD%20AZHAN.pdf text en public http://eprints.uthm.edu.my/558/2/MIRSA%20NURFARHAN%20MOHD%20AZHAN%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/558/3/MIRSA%20NURFARHAN%20MOHD%20AZHAN%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	QC501-766 Electricity and magnetism
spellingShingle	QC501-766 Electricity and magnetism Mohd Azhan, Mirsa Nurfarhan The impact of brillouin pump pre-amplification on multiwavelength brillouin-erbium fiber laser in linear cavity
description	Multiwavelength Brillouin Erbium Fiber Lasers (BEFLs) gain interest in recent decades due to their inherent characteristics such as narrow linewidth, high optical power and single frequency. Generation of multiple wavelengths is realizable through combination of Brillouin and Erbium-Doped Fiber Amplifier (EDFA) gain in the laser cavity. Recent developments of multiwavelength BEFL utilize virtual mirrors in their configuration and most of them amplify the Brillouin pump (BP) once before it oscillates in the laser cavity. Therefore, curiosity now arises as how the number of BP pre-amplification affects the performances of the multiwavelength BEFL. Aspired to answer the curiosity, the impact of BP pre-amplification on the multiwavelength BEFL is studied in this thesis. Comparison with three different schemes of without, single and double BP pre-amplification is carried out for the performance optimization. Experimental results suggest that the scheme with single BP pre-amplification achieves the best performances than the schemes of without and double BP pre-amplification. When the BP wavelength is set at 1550 nm, the scheme of single BP pre-amplification has 8 channels, which is higher than 4 channels for the scheme of double BP pre-amplification and 2 channels for the scheme without BP pre-amplification. For the threshold power meanwhile, the scheme with single BP pre-amplification records the lowest value of 6.8 mW as opposed to 13 mW and 12.7 mW recorded for the scheme of without and double BP pre-amplification respectively. In terms of stability, the scheme with double BP pre-amplification produces the most stable output spectra with 0.39 dB peak fluctuation in comparison to 17.3 dB and 2.44 dB for the scheme of without and single BP pre-amplification respectively. All in all, multiwavelength BEFL with single BP pre-amplification records the best performances with respect to the number of channels and threshold power but, the laser is found to be the most stable when employing double BP pre-amplification technique.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Mohd Azhan, Mirsa Nurfarhan
author_facet	Mohd Azhan, Mirsa Nurfarhan
author_sort	Mohd Azhan, Mirsa Nurfarhan
title	The impact of brillouin pump pre-amplification on multiwavelength brillouin-erbium fiber laser in linear cavity
title_short	The impact of brillouin pump pre-amplification on multiwavelength brillouin-erbium fiber laser in linear cavity
title_full	The impact of brillouin pump pre-amplification on multiwavelength brillouin-erbium fiber laser in linear cavity
title_fullStr	The impact of brillouin pump pre-amplification on multiwavelength brillouin-erbium fiber laser in linear cavity
title_full_unstemmed	The impact of brillouin pump pre-amplification on multiwavelength brillouin-erbium fiber laser in linear cavity
title_sort	impact of brillouin pump pre-amplification on multiwavelength brillouin-erbium fiber laser in linear cavity
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Fakulti Kejuruteraan Elektrik dan Elektronik
publishDate	2019
url	http://eprints.uthm.edu.my/558/1/24p%20MIRSA%20NURFARHAN%20MOHD%20AZHAN.pdf http://eprints.uthm.edu.my/558/2/MIRSA%20NURFARHAN%20MOHD%20AZHAN%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/558/3/MIRSA%20NURFARHAN%20MOHD%20AZHAN%20WATERMARK.pdf
_version_	1747830638537342976

The impact of brillouin pump pre-amplification on multiwavelength brillouin-erbium fiber laser in linear cavity

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