Generation of pulsed dual wavelength erbium doped fiber laser

Single and dual wavelength fiber lasers and pulsed fiber lasers are well-known to be used for various applications. In the generation of dual wavelength fiber lasers and pulsed fiber lasers, the researchers found the mode competition among the dual wavelength is caused by the cross-gain saturation a...

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Main Author:	Abdul Hadi, Fatin Shaqira
Format:	Thesis
Language:	English English English
Published:	2019
Subjects:	QC350-467 Optics Light
Online Access:	http://eprints.uthm.edu.my/491/1/24p%20FATIN%20SHAQIRA%20ABDUL%20HADI.pdf http://eprints.uthm.edu.my/491/2/FATIN%20SHAQIRA%20ABDUL%20HADI%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/491/3/FATIN%20SHAQIRA%20ABDUL%20HADI%20WATERMARK.pdf
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spelling	my-uthm-ep.4912021-07-25T07:28:05Z Generation of pulsed dual wavelength erbium doped fiber laser 2019-02 Abdul Hadi, Fatin Shaqira QC350-467 Optics. Light Single and dual wavelength fiber lasers and pulsed fiber lasers are well-known to be used for various applications. In the generation of dual wavelength fiber lasers and pulsed fiber lasers, the researchers found the mode competition among the dual wavelength is caused by the cross-gain saturation and strong homogeneous line broadening faced by erbium doped fiber (EDF). Therefore, the aim of this thesis is to generate a single and dual wavelength fiber laser and pulsed fiber laser by using fiber Bragg grating (FBG) in single ring and Figure-8 configurations at 1550 nm and 1560 nm. Analysis and optimization on single wavelength fiber laser and single wavelength pulsed fiber laser give a peak power of -10.70 dBm (8.51x10-2 mW) and -54.01 dBm (3.97x10-6 mW) with signal to noise ratio (SNR) of 59.70 dB and 10.29 dB, respectively, at 1550 nm. Similarly, at 1560 nm, this gives a peak power of -13.60 dBm (4.37x10-2 mW) and -60.00 dBm (1.00x10-6 mW) with SNR of 57.60 dB and 8.78 dB, respectively. For dual wavelength fiber laser and dual wavelength pulsed fiber laser, this gives a peak power of -12.90 dBm (5.13x10-2 mW) and -54.03 dBm (3.95x10-6 mW) at 1550 nm and a peak power of -14.80 dBm (3.24x10-2 mW) and -57.99 dBm (1.59x10-6 mW) at 1560 nm, respectively. The SNR obtained for 1550 nm and 1560 nm for dual wavelength fiber laser and dual wavelength pulsed fiber laser are 55.38 dB and 11.16 dB and 53.58 dB and 11.27 dB, respectively. The repetition rate of single and dual wavelength pulsed fiber laser is 2.878 MHz. It can be concluded that single and dual wavelength fiber lasers are successfully generated using single ring and figure-8 configurations whereas single and dual wavelength pulsed fiber laser are generated using only Figure-8 configuration due to mode locking occurrence. The polarization inside the cavity is controlled to solve mode competition and homogeneous in EDF, in order to obtain a stable dual wavelength. 2019-02 Thesis http://eprints.uthm.edu.my/491/ http://eprints.uthm.edu.my/491/1/24p%20FATIN%20SHAQIRA%20ABDUL%20HADI.pdf text en public http://eprints.uthm.edu.my/491/2/FATIN%20SHAQIRA%20ABDUL%20HADI%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/491/3/FATIN%20SHAQIRA%20ABDUL%20HADI%20WATERMARK.pdf text en validuser mphil masters Universiti Tun Hussein Onn Malaysia Fakulti Sains Gunaan dan Teknologi
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English English
topic	QC350-467 Optics Light
spellingShingle	QC350-467 Optics Light Abdul Hadi, Fatin Shaqira Generation of pulsed dual wavelength erbium doped fiber laser
description	Single and dual wavelength fiber lasers and pulsed fiber lasers are well-known to be used for various applications. In the generation of dual wavelength fiber lasers and pulsed fiber lasers, the researchers found the mode competition among the dual wavelength is caused by the cross-gain saturation and strong homogeneous line broadening faced by erbium doped fiber (EDF). Therefore, the aim of this thesis is to generate a single and dual wavelength fiber laser and pulsed fiber laser by using fiber Bragg grating (FBG) in single ring and Figure-8 configurations at 1550 nm and 1560 nm. Analysis and optimization on single wavelength fiber laser and single wavelength pulsed fiber laser give a peak power of -10.70 dBm (8.51x10-2 mW) and -54.01 dBm (3.97x10-6 mW) with signal to noise ratio (SNR) of 59.70 dB and 10.29 dB, respectively, at 1550 nm. Similarly, at 1560 nm, this gives a peak power of -13.60 dBm (4.37x10-2 mW) and -60.00 dBm (1.00x10-6 mW) with SNR of 57.60 dB and 8.78 dB, respectively. For dual wavelength fiber laser and dual wavelength pulsed fiber laser, this gives a peak power of -12.90 dBm (5.13x10-2 mW) and -54.03 dBm (3.95x10-6 mW) at 1550 nm and a peak power of -14.80 dBm (3.24x10-2 mW) and -57.99 dBm (1.59x10-6 mW) at 1560 nm, respectively. The SNR obtained for 1550 nm and 1560 nm for dual wavelength fiber laser and dual wavelength pulsed fiber laser are 55.38 dB and 11.16 dB and 53.58 dB and 11.27 dB, respectively. The repetition rate of single and dual wavelength pulsed fiber laser is 2.878 MHz. It can be concluded that single and dual wavelength fiber lasers are successfully generated using single ring and figure-8 configurations whereas single and dual wavelength pulsed fiber laser are generated using only Figure-8 configuration due to mode locking occurrence. The polarization inside the cavity is controlled to solve mode competition and homogeneous in EDF, in order to obtain a stable dual wavelength.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Abdul Hadi, Fatin Shaqira
author_facet	Abdul Hadi, Fatin Shaqira
author_sort	Abdul Hadi, Fatin Shaqira
title	Generation of pulsed dual wavelength erbium doped fiber laser
title_short	Generation of pulsed dual wavelength erbium doped fiber laser
title_full	Generation of pulsed dual wavelength erbium doped fiber laser
title_fullStr	Generation of pulsed dual wavelength erbium doped fiber laser
title_full_unstemmed	Generation of pulsed dual wavelength erbium doped fiber laser
title_sort	generation of pulsed dual wavelength erbium doped fiber laser
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Fakulti Sains Gunaan dan Teknologi
publishDate	2019
url	http://eprints.uthm.edu.my/491/1/24p%20FATIN%20SHAQIRA%20ABDUL%20HADI.pdf http://eprints.uthm.edu.my/491/2/FATIN%20SHAQIRA%20ABDUL%20HADI%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/491/3/FATIN%20SHAQIRA%20ABDUL%20HADI%20WATERMARK.pdf
_version_	1747830623130615808

Generation of pulsed dual wavelength erbium doped fiber laser

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