Design And Development Of A Novel Tunable Erbium-Doped Fiber Laser

Howieg, Mohammed Alfayturi S (2003) Design And Development Of A Novel Tunable Erbium-Doped Fiber Laser. Masters thesis, Universiti Putra Malaysia.

[img] PDF
816Kb

Abstract

Widely tunable single channel fiber lasers operating in the l550nm wavelength region are needed as laser source for applications such as wavelength-division-multiplexed (WDM) communication systems, fiber sensors, spectroscopy, and optical fiber gyroscopes. Fiber lasers are emerging as an attractive alternative technology for wavelength-selectable WDM source for direct compatibility with fiber-optic transmission medium, excellent amplifying properties of rare-earth doped fibers, rapidly continuing progress in novel fiber gain media, maturity and robustness of the laser diode pumps used, and availability of fiber-based components. The tunable laser applications of interest in this work have distinct performance requirement, which is the need for wide tunability (the ability to tune the lasing emission through a wide range of wavelengths). In this thesis, the design and development of a single channel continuous wave erbium-doped fiber laser (EDFL), with novel loop mirror configuration, is experimentally studied. Based on design parameters of a fiber laser (launched pump powers, erbiumdoped fiber lengths and output reflectivities of fiber laser), three fiber laser configurations; backward, forward, and bi-directional pumping are demonstrated. Throughout this work different lengths of erbium-doped fiber with various output reflectivities have been examined to extract the optimum output performance of a fiber laser. The performance of the fiber laser is presented in terms of threshold pump power, slope of efficiency, output peak power, linewidth, tuning range, and side mode suppression ratio (SMSR). This new fiber loop configuration exhibits considerably high performance. Output power of 27.7 mW and efficient noise suppression of more than 70 dB have been achieved. A threshold power as low as 2.5 m W and slope efficiency of 20% is realized. Narrow spectral width of 0.058nm over a tuning range of 40 nm is obtained.

Item Type:Thesis (Masters)
Chairman Supervisor:Associate Professor Mohd Khazani Abdullah, PhD
Call Number:FK 2003 24
Faculty or Institute:Faculty of Engineering
ID Code:12165
Deposited By: Mohd Nezeri Mohamad
Deposited On:15 Jul 2011 03:15
Last Modified:15 Jul 2011 03:15

Repository Staff Only: item control page

Document Download Statistics

This item has been downloaded for since 15 Jul 2011 03:15.

View statistics for "Design And Development Of A Novel Tunable Erbium-Doped Fiber Laser "


Universiti Putra Malaysia Institutional Repository

Universiti Putra Malaysia Institutional Repository is an on-line digital archive that serves as a central collection and storage of scientific information and research at the Universiti Putra Malaysia.

Currently, the collections deposited in the IR consists of Master and PhD theses, Master and PhD Project Report, Journal Articles, Journal Bulletins, Conference Papers, UPM News, Newspaper Cuttings, Patents and Inaugural Lectures.

As the policy of the university does not permit users to view thesis in full text, access is only given to the first 24 pages only.