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• W289773366 abstract "Currently, existing networks which utilizes Dense Wavelength Division Multiplexing(DWDM) have come to its limitation, with the increase of data traffic extending theoperational bandwidth from the C- to the L-band. Although the L-band can sustaincurrent demands, there is a pressing need to explore the S-band region for future needs.One of the important components for operation in the S-band region is the S-bandoptical amplifier, which requires in-depth investigation and is the scope and objective ofthis thesis. The work will undertake a nearly comprehensive evaluation of the differenttypes of optical amplifiers such as Erbium Doped Fibers Amplifiers (EDFAs),Depressed-Cladding Erbium-Doped Fibers Amplifiers (DC-EDFAs), SemiconductorOptical Amplifier (SOAs) and Raman Amplifier (RAs). The methodology of this workis to investigate these amplifiers from the aspect of the gain and noise figure at differentinput signal wavelengths and powers. Further to this, the optical amplifier is configuredinto a fiber laser and various parameters such as the tuning range, output power and theSide Mode Supression Ratio (SMSR) will be investigated. Various methods are used totune the wavelength of the fibre lasers, including the Arrayed Waveguide Gratings(AWGs) and Tunable Bandpass Filters (TBFs) as well as Tunable Fibre Bragg Gratings(TBFGs) for different gain media. Significantly important results were obtained fromthese investigations, including the generation of an SOA based fiber laser with an ultrawidetuning range of more than 120 nm covering the S-, C- and L- bands.This thesis also presents another application of the S-band amplifier, which isthe multi-wavelength Brillouin fiber laser operating in the S-band region. Thisapplication is important for the development cost-effective transmission sources for theDWDM systems. The multi-wavelength fiber laser uses the Brillouin effect, which is a non-linear optical effect, together with the EDFA, DC-EDFA, SOA and RA to generatea multi-wavelength output in the S-band region. The developed multi-wavelengthBrillouin fiber laser has a number of substantial performance improvements oversimilar designs, including the number of the Stokes lines generated, flat output peakpower and also channel spacing.The studies undertaken and the results obtained in this work can provide importantinputs into the design of S-band optical amplifiers for application in future S-bandnetworks. Furthermore, the results obtained in this work are instrumental to thedevelopment of tunable S-band fiber laser sources and also multi-wavelength sourcesfor the possibility of usage in DWDM systems." @default.
• W289773366 created "2016-06-24" @default.
• W289773366 creator A5085867745 @default.
• W289773366 date "2012-01-01" @default.
• W289773366 modified "2023-09-26" @default.
• W289773366 title "Study of S-band optical amplifiers and its applications / Mohd Zamani Zulkifli" @default.
• W289773366 hasPublicationYear "2012" @default.
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