Multiwavelength fiber laser based on different types of semiconductor optical amplifiers

Communication system in optical fiber technology has emerged as a demanding field especially for the new dense wavelength-division multiplexed (DWDM) system wherein many functional applications and basic laser system are included. The generation of multiple laser lines in multiwavelength fiber laser...

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Main Author:	Ong, Yong Suan
Format:	Thesis
Language:	English
Published:	2020
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/98300/1/OngYongSuanMRAZAK2020.pdf
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spelling	my-utm-ep.983002022-12-06T07:40:01Z Multiwavelength fiber laser based on different types of semiconductor optical amplifiers 2020 Ong, Yong Suan TK Electrical engineering. Electronics Nuclear engineering Communication system in optical fiber technology has emerged as a demanding field especially for the new dense wavelength-division multiplexed (DWDM) system wherein many functional applications and basic laser system are included. The generation of multiple laser lines in multiwavelength fiber laser (MWFL) is significant in semiconductor optical amplifier (SOA) device utilization as a medium of gain to achieve a flat laser spectrum. Apart from Erbium-doped fiber amplifier (EDFA) and Raman amplification that have high mode competition and high pumping power respectively, MWFL configuration has delegated SOA due to its special inhomogeneous characteristic as a device of stability compared to other devices of scattering and amplification effects. An investigation on the types of different wideband travelling wave (TW) SOA with parameters such as optical gain, output power, noise figure (NF) and amplified spontaneous emission (ASE) noise and bias current was carried out through OptiSystem and MATLAB software and then verified by benchtop experiments. Linear SOA had the most flat gain with low NF and ASE pattern at input power -30 dBm compared with nonlinear SOA. A practical Lyot-combed and fiber Bragg grating (FBG) were constructed using unidirectional single cavity in different types of SOA and linear SOA displayed the flattest peak powers. Multiwavelength spectrum from linear, nonlinear SOA and booster optical amplifier (BOA) were varied by intensity, polarization angle (PA), in-line polarizer and time stability by applying performance evaluator such as the number of laser lines, extinction ratio (ER), channel spacing and highest optical power. The laser experiment for linear SOA concluded with the flattest spectrum in time stability which was true to the characterization modelling result and it also acted differently as nonlinear SOA and BOA that vary greatly to nonlinearity with different PA. 2020 Thesis http://eprints.utm.my/id/eprint/98300/ http://eprints.utm.my/id/eprint/98300/1/OngYongSuanMRAZAK2020.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:144366 masters Universiti Teknologi Malaysia, Razak Faculty of Technology & Informatics Razak Faculty of Technology & Informatics
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Ong, Yong Suan Multiwavelength fiber laser based on different types of semiconductor optical amplifiers
description	Communication system in optical fiber technology has emerged as a demanding field especially for the new dense wavelength-division multiplexed (DWDM) system wherein many functional applications and basic laser system are included. The generation of multiple laser lines in multiwavelength fiber laser (MWFL) is significant in semiconductor optical amplifier (SOA) device utilization as a medium of gain to achieve a flat laser spectrum. Apart from Erbium-doped fiber amplifier (EDFA) and Raman amplification that have high mode competition and high pumping power respectively, MWFL configuration has delegated SOA due to its special inhomogeneous characteristic as a device of stability compared to other devices of scattering and amplification effects. An investigation on the types of different wideband travelling wave (TW) SOA with parameters such as optical gain, output power, noise figure (NF) and amplified spontaneous emission (ASE) noise and bias current was carried out through OptiSystem and MATLAB software and then verified by benchtop experiments. Linear SOA had the most flat gain with low NF and ASE pattern at input power -30 dBm compared with nonlinear SOA. A practical Lyot-combed and fiber Bragg grating (FBG) were constructed using unidirectional single cavity in different types of SOA and linear SOA displayed the flattest peak powers. Multiwavelength spectrum from linear, nonlinear SOA and booster optical amplifier (BOA) were varied by intensity, polarization angle (PA), in-line polarizer and time stability by applying performance evaluator such as the number of laser lines, extinction ratio (ER), channel spacing and highest optical power. The laser experiment for linear SOA concluded with the flattest spectrum in time stability which was true to the characterization modelling result and it also acted differently as nonlinear SOA and BOA that vary greatly to nonlinearity with different PA.
format	Thesis
qualification_level	Master's degree
author	Ong, Yong Suan
author_facet	Ong, Yong Suan
author_sort	Ong, Yong Suan
title	Multiwavelength fiber laser based on different types of semiconductor optical amplifiers
title_short	Multiwavelength fiber laser based on different types of semiconductor optical amplifiers
title_full	Multiwavelength fiber laser based on different types of semiconductor optical amplifiers
title_fullStr	Multiwavelength fiber laser based on different types of semiconductor optical amplifiers
title_full_unstemmed	Multiwavelength fiber laser based on different types of semiconductor optical amplifiers
title_sort	multiwavelength fiber laser based on different types of semiconductor optical amplifiers
granting_institution	Universiti Teknologi Malaysia, Razak Faculty of Technology & Informatics
granting_department	Razak Faculty of Technology & Informatics
publishDate	2020
url	http://eprints.utm.my/id/eprint/98300/1/OngYongSuanMRAZAK2020.pdf
_version_	1776100578177318912

Multiwavelength fiber laser based on different types of semiconductor optical amplifiers

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