Design And Analysis Of A Double Carrier Modulation/Differential Detection Technique For Optical Fiber Communications

Fiber optic long haul transmissions have been globally deployed at a staggering rate. All of the installed networks are using Intensity Modulation/Direct Detection (IM/DD). Although the IM/DD systems are proven and used widely, these networks are still subjected to many problems. The main problem...

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Main Author:	Matrood, Naseer Abbas
Format:	Thesis
Language:	English English
Published:	2003
Subjects:	Optical Commmunications
Online Access:	http://psasir.upm.edu.my/id/eprint/12200/1/FK_2003_43_A.pdf
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id	my-upm-ir.12200
record_format	uketd_dc
spelling	my-upm-ir.122002011-07-14T08:09:47Z Design And Analysis Of A Double Carrier Modulation/Differential Detection Technique For Optical Fiber Communications 2003-05 Matrood, Naseer Abbas Fiber optic long haul transmissions have been globally deployed at a staggering rate. All of the installed networks are using Intensity Modulation/Direct Detection (IM/DD). Although the IM/DD systems are proven and used widely, these networks are still subjected to many problems. The main problems associated with long haul transmission are; high dispersion and losses incurred by the fiber, and the inability of the receiver circuit to regenerate the transmitted bits. This is because of low signal power and inter-symbol interference, in addition to the masking noises. The recovery technique in the conventional receivers based on the IM/DD scheme uses an injected voltage level as a threshold into a decision circuit, which decides whether the incoming bit is a 0 or a 1. This scheme has two inherent problems; the instability of the injected threshold voltage, and the complexity of a dynamic threshold processing. As the threshold voltage has its own noise and fluctuation, it adds to the deterioration of the signal, thus limits the systems performance. Meanwhile, due to the random nature of the incoming bits, coupled with the masking noises and jitters, the threshold voltage level cannot be set at a fixed value, and therefore a dynamic voltage threshold adjustment is required. The demand of high data rate and long transmission distance impose much difficulty, therefore new approaches and techniques have to be applied to improve the system and solve these problems. This led to the development of new techniques for the system performance improvement. Optical Commmunications 2003-05 Thesis http://psasir.upm.edu.my/id/eprint/12200/ http://psasir.upm.edu.my/id/eprint/12200/1/FK_2003_43_A.pdf application/pdf en public masters Universiti Putra Malaysia Optical Commmunications Faculty of Engineering English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
topic	Optical Commmunications
spellingShingle	Optical Commmunications Matrood, Naseer Abbas Design And Analysis Of A Double Carrier Modulation/Differential Detection Technique For Optical Fiber Communications
description	Fiber optic long haul transmissions have been globally deployed at a staggering rate. All of the installed networks are using Intensity Modulation/Direct Detection (IM/DD). Although the IM/DD systems are proven and used widely, these networks are still subjected to many problems. The main problems associated with long haul transmission are; high dispersion and losses incurred by the fiber, and the inability of the receiver circuit to regenerate the transmitted bits. This is because of low signal power and inter-symbol interference, in addition to the masking noises. The recovery technique in the conventional receivers based on the IM/DD scheme uses an injected voltage level as a threshold into a decision circuit, which decides whether the incoming bit is a 0 or a 1. This scheme has two inherent problems; the instability of the injected threshold voltage, and the complexity of a dynamic threshold processing. As the threshold voltage has its own noise and fluctuation, it adds to the deterioration of the signal, thus limits the systems performance. Meanwhile, due to the random nature of the incoming bits, coupled with the masking noises and jitters, the threshold voltage level cannot be set at a fixed value, and therefore a dynamic voltage threshold adjustment is required. The demand of high data rate and long transmission distance impose much difficulty, therefore new approaches and techniques have to be applied to improve the system and solve these problems. This led to the development of new techniques for the system performance improvement.
format	Thesis
qualification_level	Master's degree
author	Matrood, Naseer Abbas
author_facet	Matrood, Naseer Abbas
author_sort	Matrood, Naseer Abbas
title	Design And Analysis Of A Double Carrier Modulation/Differential Detection Technique For Optical Fiber Communications
title_short	Design And Analysis Of A Double Carrier Modulation/Differential Detection Technique For Optical Fiber Communications
title_full	Design And Analysis Of A Double Carrier Modulation/Differential Detection Technique For Optical Fiber Communications
title_fullStr	Design And Analysis Of A Double Carrier Modulation/Differential Detection Technique For Optical Fiber Communications
title_full_unstemmed	Design And Analysis Of A Double Carrier Modulation/Differential Detection Technique For Optical Fiber Communications
title_sort	design and analysis of a double carrier modulation/differential detection technique for optical fiber communications
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Engineering
publishDate	2003
url	http://psasir.upm.edu.my/id/eprint/12200/1/FK_2003_43_A.pdf
_version_	1747811327218286592

Design And Analysis Of A Double Carrier Modulation/Differential Detection Technique For Optical Fiber Communications

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