Document Details
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Document Type |
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Thesis |
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Document Title |
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FIBER OPTICS SYSTEM: PROPERTIES, ANALYSIS, DESIGN AND APPLICATIONS نظام الألياف البصرية: الخواص والتحليل والتصميم والتطبيقات |
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Subject |
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Faculty of Engineering |
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Document Language |
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Arabic |
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Abstract |
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Fiber optic (FO) systems have recently received a great deal of attention, and they are used now as a preferred transmission medium in current communication systems because they offer great information carrying capacity over long distances using less repeaters than conventional copper-wire system. Any FO communication system composed of three parts; transmitter, FO cable, and receiver. Each part is implemented into a computer program.
A generalized and comprehensive flowchart is developed for designing FO communication links, considering most of component parameters and design factors. The flowchart, implemented into web page utilizing ASP.net web programming and C# and database built by SQL server, is examined on several existing FO links. A general computer-aided approach was developed to help the designer to select suitable combination(s) of transmitter, fiber link, detector, and number of repeaters to satisfy link specifications. The capability of the program in minimizing repeaters number is demonstrated.
Dense Wavelength Division Multiplexing (DWDM) system is a high-speed optical transmission system which transports simultaneously optical signals of various wavelengths over a single FO. DWDM technology, theoretically, gives many services by using FO. The number of services depends on factors such as number of channels, channel spacing between channels, input power, bit rate, FO length and FO effective area. We provide an analysis and simulation of DWDM technology for the optical transmission systems. We provide a method to develop a powerful comprehensive simulation program using MATLAB to simulate different parts of DWDM systems to minimize the impact of linear and non-linear effect [attenuation, dispersion, self-phase modulation (SPM), cross-phase modulation (XPM), and stimulated Raman scattering (SRS)] on the quality of transmission. The developed simulation software will be optimized by using the adaptive split step control to increase the simulation efficiency.
FO has several applications, such as: fiber to the home service (FTTH), local area networks (LAN) using FO. FTTH service providers can offer a variety of services: interactive video, high-speed internet, cable television broadcast, and telephony. All these services are offered via single fiber optic. Calculation of the cost of delivering the FTTH service is one of the constraints in this technology. We present a general computer aided software to provide a good designing tool that assists network planners to evaluate and compute the total cost in order to meet the requirements of FTTH. Several LAN topologies were considered and discussed found ring topology easy to isolate faults and it has good performs under heavy network load. The most serious problem that faces the ring topology is the system delay. Double ring and standby ring are used to decrease the time delay or the propagation delay. We present a powerful program to deal with transmitter and receiver of a ring topology for the standby and double ring topologies and different types of probability distributions to give statistical output figures of any network performance. Also, a program was developed to assist the user to calculate some of the FO characteristics. |
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Supervisor |
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Prof. Dr. Adnan M. Affandi |
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Thesis Type |
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Doctorate Thesis |
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Publishing Year |
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1438 AH
2017 AD |
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Added Date |
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Thursday, August 24, 2017 |
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Researchers
| عثمان عبدالله الرسيني | AL-RUSAINI, OTHMAN ABDULLAH | Researcher | Doctorate | |
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