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The Research on Statistical Characteristics of Polarization Mode Dispersion Based on Jones Transfer Matrix

Author: DengFang
Tutor: YuZhenHong
School: Jiangnan University
Course: Detection Technology and Automation
Keywords: Polarization mode dispersion Statistical properties Jones matrix Layer-Peeling Algorithm Genetic Algorithms Grating reconstructed
CLC: TN929.1
Type: Master's thesis
Year: 2008
Downloads: 107
Quote: 1
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Abstract


High-speed optical fiber communication (> 40Gb / s) has become a hot research topic in recent years , the global fiber-optic cable and optical network equipment market has maintained rapid development . With the development of long-distance and high-speed communication systems , optical fiber communication is not concerned about the polarization mode dispersion (PMD) has recently become very prominent , to become one of the main factors of the limit system transmission capacity and distance . Other dispersion , polarization mode dispersion causes the pulse broadening , the first order PMD causes the two principal states of polarization (PSP) direction of transmission of the pulse differential delay , pulse broadening even split the main lead to system degradation , while the second-order PMD can be viewed as the interaction of the six replicate pulse , overshoot of the pulse shape , the side lobe phenomenon, and further deterioration of the transmission quality , thereby increasing the error rate of a digital communication system , the restriction system transmission bandwidth . And PMD with randomness, and is affected by the environment , and almost can not compensate . In this article , we described the transfer matrix method , the Jones matrix equation is derived , and the establishment of a model using the Jones transfer matrix method to study the statistical properties of PMD , the numerical simulation of differential group delay (DGD) of different frequencies . The simulated value of the polarization mode dispersion is 25ps when polarization mode dispersion of probability distribution , the results obtained with the theoretical results in good agreement . Comparing the polarization mode dispersion value of the different frequencies , and its value changes with frequency change, 125GHz range , the difference is up to 2ps, taking into account their frequency characteristics , so it is necessary in order to compensate polarization mode dispersion in high-speed systems . In the numerical simulation , engineering fiber parameters makes it more practical to provide a basis for evaluation of system performance and compensation polarization mode dispersion . Further, the Hybrid algorithm is proposed a method for reconstructing a multichannel optical fiber Bragg grating . LP algorithm is embedded into the genetic algorithm iteration process to generate new populations by genetic algorithm for the optimal value of the phase factor , after the phase factor introduced by the LP algorithm based on the spectral response reconfigurable grating . 8 channel grating peak fold variable (MRIM) is about eight times the single- channel grating through numerical simulation .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Lightwave communications, laser communications
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