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Optimization Software Development For Unrepeated Wavelength Division Multiplexing Remotely-pumped Optical Communication System

Posted on:2017-05-30Degree:MasterType:Thesis
Country:ChinaCandidate:Y Y ShanFull Text:PDF
GTID:2348330503989819Subject:Optical Engineering
Abstract/Summary:PDF Full Text Request
With the policy “transmitting the electricity from western areas to East China, mutual suppling between north and south”, more and more ultra-high-voltage electric power systems are built. As a result, the associated optical communication systems along grids are faced with greater challenges. Because ultra-high-voltage electric power systems usually locate where natural conditions are pretty bad, it is very expensive to build repeater stations for the associated optical communication system. How to improve the span of unrepeated communication system is one of problems that must be addressed at this stage. In addition, the demand for communication capacity is getting higher and higher with the popularization of smart grids. How to improve the communication capacity of associated optical communication is another problem need to be solved.In this dissertation, wavelength division multiplexing(WDM) remotely-pumped optical communication system is investigated, which is a perfect solution for ultra-long unrepeated transmission. First of all, the author introduces the basic theory and components of WDM remotely-pumped optical communication system. Research of Erbium-doped optical fiber amplifier(EDFA) and distributed fiber Raman amplifier(DFRA) are carried out at the same time. Secondly, EDFA and DFRA are modeling according to basic experiments. Then, the author not only proposes optimization methods for EDFA and DFRA in WDM remotely-pumped optical communication systems but also selects appropriate algorithm for them. After that, an optimization software for WDM remotely-pumped optical communication systems is realized. In order to reduce the difficulty to use it, the author designs an efficient graphical user interface(GUI) for the software. Considering the limitation of this software, optical field of phase modulated signal in DFRA is investigated. Based on error vector magnitude(EVM) techniques, a simple and high efficient numerical method to calculate and the impact of Raman pump relative intensity noise(RIN) on the phase modulated signal is proposed.
Keywords/Search Tags:wavelength division multiplexing, remotely-pumped, distributed fiber Raman amplifier, Erbium-doped optical fiber amplifier, relative intensity noise
PDF Full Text Request
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