Investigation of four wave mixing & cross gain modulation in photonic transmission system

This thesis focuses on investigation of two nonlinear effects, four wave mixing (FWM) and cross gain modulation (XGM) in photonic transmission system. The work begins with analyzing the performance for both nonlinear effects in multiple channels of wavelength division multiplexing (WDM) transmission...

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Format:	Thesis
Language:	English
Subjects:	Wavelength division multiplexing Photonics Fiber optics
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77428/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77428/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77428/3/Declaration%20Form.pdf
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spelling	my-unimap-774282022-12-07T01:40:05Z Investigation of four wave mixing & cross gain modulation in photonic transmission system Mohamad Halim, Abd. Wahid, Dr. This thesis focuses on investigation of two nonlinear effects, four wave mixing (FWM) and cross gain modulation (XGM) in photonic transmission system. The work begins with analyzing the performance for both nonlinear effects in multiple channels of wavelength division multiplexing (WDM) transmission system. It addresses the optical transmission system for long haul transmission. The long haul model of 16 channels RZ and NRZ over 1680 km achieved a good signal to noise ratio. The Q-factor decreases with the growth number of channels for both NRZ and RZ format. This study also examined several modulation formats in DWDM system such as RZ, NRZ and duobinary. It is observed that the Q factor degrades slower for RZ in comparison to NRZ. The duobinary has shown the most efficient format due to its nonlinear and band limitation robustness than traditional modulation formats, such as RZ and NRZ. In the observation, FWM and XGM crosstalk degrades the optical signal transmission characteristic of multiplexing signals system significantly. This could be attributed to the higher power launched into the individual channel that led to the nonlinear effects. The work is designed to optimize the performance for the DWDM system considering the limitation imposed by the nonlinear effects. Preliminarily, in-line optical amplifiers and repeaters are noticed to enhance the system. Other approach known as unequal spacing channel allocation in multichannel transmitter is employed to overcome limitation imposes by FWM and XGM. The observation reveals out that unequal channel spacing advances the Q-factor for the system as compared to equal channel spacing. It is also clearly observed that the adoption of duobinary modulation scheme reduces the impact of FWM in DWDM system. The levels of FWM products are reduced by around 12 dB which offer a prominent performance benefit for the system. Universiti Malaysia Perlis (UniMAP) Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/77428 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77428/4/license.txt 8a4605be74aa9ea9d79846c1fba20a33 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77428/1/Page%201-24.pdf 349302595667ff4672f86bd0d58548d9 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77428/2/Full%20text.pdf bff50b2c6454f7186cfc78c506bb7d7a http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77428/3/Declaration%20Form.pdf d91d6780b37fc9f603512d40ee71715f Universiti Malaysia Perlis (UniMAP) Wavelength division multiplexing Photonics Fiber optics School of Microelectronic Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
advisor	Mohamad Halim, Abd. Wahid, Dr.
topic	Wavelength division multiplexing Photonics Fiber optics
spellingShingle	Wavelength division multiplexing Photonics Fiber optics Investigation of four wave mixing & cross gain modulation in photonic transmission system
description	This thesis focuses on investigation of two nonlinear effects, four wave mixing (FWM) and cross gain modulation (XGM) in photonic transmission system. The work begins with analyzing the performance for both nonlinear effects in multiple channels of wavelength division multiplexing (WDM) transmission system. It addresses the optical transmission system for long haul transmission. The long haul model of 16 channels RZ and NRZ over 1680 km achieved a good signal to noise ratio. The Q-factor decreases with the growth number of channels for both NRZ and RZ format. This study also examined several modulation formats in DWDM system such as RZ, NRZ and duobinary. It is observed that the Q factor degrades slower for RZ in comparison to NRZ. The duobinary has shown the most efficient format due to its nonlinear and band limitation robustness than traditional modulation formats, such as RZ and NRZ. In the observation, FWM and XGM crosstalk degrades the optical signal transmission characteristic of multiplexing signals system significantly. This could be attributed to the higher power launched into the individual channel that led to the nonlinear effects. The work is designed to optimize the performance for the DWDM system considering the limitation imposed by the nonlinear effects. Preliminarily, in-line optical amplifiers and repeaters are noticed to enhance the system. Other approach known as unequal spacing channel allocation in multichannel transmitter is employed to overcome limitation imposes by FWM and XGM. The observation reveals out that unequal channel spacing advances the Q-factor for the system as compared to equal channel spacing. It is also clearly observed that the adoption of duobinary modulation scheme reduces the impact of FWM in DWDM system. The levels of FWM products are reduced by around 12 dB which offer a prominent performance benefit for the system.
format	Thesis
title	Investigation of four wave mixing & cross gain modulation in photonic transmission system
title_short	Investigation of four wave mixing & cross gain modulation in photonic transmission system
title_full	Investigation of four wave mixing & cross gain modulation in photonic transmission system
title_fullStr	Investigation of four wave mixing & cross gain modulation in photonic transmission system
title_full_unstemmed	Investigation of four wave mixing & cross gain modulation in photonic transmission system
title_sort	investigation of four wave mixing & cross gain modulation in photonic transmission system
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Microelectronic Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77428/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77428/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77428/3/Declaration%20Form.pdf
_version_	1776104277267185664

Investigation of four wave mixing & cross gain modulation in photonic transmission system

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