Staff View: Dual-wavelength fiber lasers covering the regions of 1.0, 1.5 and 2.0 micron and their applications / Seyed Mohammad Reza Khalifeh Soltanian

Dual-wavelength fiber lasers covering the regions of 1.0, 1.5 and 2.0 micron and their applications / Seyed Mohammad Reza Khalifeh Soltanian

This report describes the methods and processes of generating tunable dual-wavelength fiber lasers by using three different types of gain media covering three different regions of 1, 1.5 and 2 micron, and an investigation regarding their applications. The homogeneous gain media used in the 1, 1.5, a...

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Main Author:	Seyed Mohammad Reza, Khalifeh Soltanian
Format:	Thesis
Published:	2016
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://studentsrepo.um.edu.my/11268/1/Seyed_Mohammad_Reza.pdf http://studentsrepo.um.edu.my/11268/2/Seyed_Mohammad_Reza.pdf http://studentsrepo.um.edu.my/11268/
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spelling	my.um.stud.112682020-07-14T00:12:51Z Dual-wavelength fiber lasers covering the regions of 1.0, 1.5 and 2.0 micron and their applications / Seyed Mohammad Reza Khalifeh Soltanian Seyed Mohammad Reza, Khalifeh Soltanian TA Engineering (General). Civil engineering (General) This report describes the methods and processes of generating tunable dual-wavelength fiber lasers by using three different types of gain media covering three different regions of 1, 1.5 and 2 micron, and an investigation regarding their applications. The homogeneous gain media used in the 1, 1.5, and 2 micron region are ytterbium-doped fiber (YDF), erbium-doped fiber (EDF), and thulium-doped fiber (TDF) respectively. Dual-wavelength fiber laser (DWFL) designs using a selective element, such as photonic crystal fiber (PCF), I discussed in the report in terms of their output power, side mode suppression ratio (SMSR) and tunability. Dual-wavelength fiber laser generation in three different homogeneous medium has been achieved and discussed. Strong mode competition induced by homogeneous broadening represents the main challenge for achieving stable multi-wavelength oscillation at room temperature. By controlling the spatial hole burning, spectral hole burning and polarization states of the modes in the ring laser cavity, new and novel approaches can be proposed to overcome the mode competition issue faced by homogeneous medium for generation of balanced dual-wavelength output. Moreover, modes propagation in PCF is investigated both experimentally and via modeling to attain a deep understanding about the physics behind the generation of DWFL. The modeling results of the field profiles for the fundamental quasi-TM modes are calculated with the vector beam propagation method (BPM). The DWFLs have numerous applications in various fields including fiber sensors and communications. In this study, new designs of DWFLs for various applications are presented and demonstrated. The single longitudinal mode (SLM) properties of the generated DWFL are also investigated and demonstrated. Potential application of DWFL for terahertz rays, the generation of dual-wavelength Q-switched fiber laser, and also the generation of DWFL for microwave generation are presented. All these applications result from the high stability and excellent quality of the fiber laser in terms of output powers and high value of SMSR. 2016-08 Thesis NonPeerReviewed application/pdf http://studentsrepo.um.edu.my/11268/1/Seyed_Mohammad_Reza.pdf application/pdf http://studentsrepo.um.edu.my/11268/2/Seyed_Mohammad_Reza.pdf Seyed Mohammad Reza, Khalifeh Soltanian (2016) Dual-wavelength fiber lasers covering the regions of 1.0, 1.5 and 2.0 micron and their applications / Seyed Mohammad Reza Khalifeh Soltanian. PhD thesis, University of Malaya. http://studentsrepo.um.edu.my/11268/
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Student Repository
url_provider	http://studentsrepo.um.edu.my/
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Seyed Mohammad Reza, Khalifeh Soltanian Dual-wavelength fiber lasers covering the regions of 1.0, 1.5 and 2.0 micron and their applications / Seyed Mohammad Reza Khalifeh Soltanian
description	This report describes the methods and processes of generating tunable dual-wavelength fiber lasers by using three different types of gain media covering three different regions of 1, 1.5 and 2 micron, and an investigation regarding their applications. The homogeneous gain media used in the 1, 1.5, and 2 micron region are ytterbium-doped fiber (YDF), erbium-doped fiber (EDF), and thulium-doped fiber (TDF) respectively. Dual-wavelength fiber laser (DWFL) designs using a selective element, such as photonic crystal fiber (PCF), I discussed in the report in terms of their output power, side mode suppression ratio (SMSR) and tunability. Dual-wavelength fiber laser generation in three different homogeneous medium has been achieved and discussed. Strong mode competition induced by homogeneous broadening represents the main challenge for achieving stable multi-wavelength oscillation at room temperature. By controlling the spatial hole burning, spectral hole burning and polarization states of the modes in the ring laser cavity, new and novel approaches can be proposed to overcome the mode competition issue faced by homogeneous medium for generation of balanced dual-wavelength output. Moreover, modes propagation in PCF is investigated both experimentally and via modeling to attain a deep understanding about the physics behind the generation of DWFL. The modeling results of the field profiles for the fundamental quasi-TM modes are calculated with the vector beam propagation method (BPM). The DWFLs have numerous applications in various fields including fiber sensors and communications. In this study, new designs of DWFLs for various applications are presented and demonstrated. The single longitudinal mode (SLM) properties of the generated DWFL are also investigated and demonstrated. Potential application of DWFL for terahertz rays, the generation of dual-wavelength Q-switched fiber laser, and also the generation of DWFL for microwave generation are presented. All these applications result from the high stability and excellent quality of the fiber laser in terms of output powers and high value of SMSR.
format	Thesis
author	Seyed Mohammad Reza, Khalifeh Soltanian
author_facet	Seyed Mohammad Reza, Khalifeh Soltanian
author_sort	Seyed Mohammad Reza, Khalifeh Soltanian
title	Dual-wavelength fiber lasers covering the regions of 1.0, 1.5 and 2.0 micron and their applications / Seyed Mohammad Reza Khalifeh Soltanian
title_short	Dual-wavelength fiber lasers covering the regions of 1.0, 1.5 and 2.0 micron and their applications / Seyed Mohammad Reza Khalifeh Soltanian
title_full	Dual-wavelength fiber lasers covering the regions of 1.0, 1.5 and 2.0 micron and their applications / Seyed Mohammad Reza Khalifeh Soltanian
title_fullStr	Dual-wavelength fiber lasers covering the regions of 1.0, 1.5 and 2.0 micron and their applications / Seyed Mohammad Reza Khalifeh Soltanian
title_full_unstemmed	Dual-wavelength fiber lasers covering the regions of 1.0, 1.5 and 2.0 micron and their applications / Seyed Mohammad Reza Khalifeh Soltanian
title_sort	dual-wavelength fiber lasers covering the regions of 1.0, 1.5 and 2.0 micron and their applications / seyed mohammad reza khalifeh soltanian
publishDate	2016
url	http://studentsrepo.um.edu.my/11268/1/Seyed_Mohammad_Reza.pdf http://studentsrepo.um.edu.my/11268/2/Seyed_Mohammad_Reza.pdf http://studentsrepo.um.edu.my/11268/
_version_	1738506462483709952
score	13.211869

Dual-wavelength fiber lasers covering the regions of 1.0, 1.5 and 2.0 micron and their applications / Seyed Mohammad Reza Khalifeh Soltanian

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