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Study on Polarizaiton Mode Dispersion Compensation in High-speed Optical Fiber Communication System by Phase-sensitive Amplifier

Author: LiLeCun
Tutor: LiYueHui
School: Nanjing University of Posts and Telecommunications
Course: Communication and Information System
Keywords: High - speed optical fiber communication systems Erbium-doped fiber amplifier Phase-sensitive optical amplifiers Polarization mode dispersion Dispersion compensation
CLC: TN929.11
Type: Master's thesis
Year: 2011
Downloads: 33
Quote: 0
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Abstract


For optical fiber communications , ultra-high speed , large capacity and ultra-long haul has been one goal . Fiber loss and dispersion become obstacles to achieve this goal . The emergence of the erbium-doped fiber amplifier (EDFA) , and fundamentally solve the problem of the fiber loss in the optical fiber communication system , but it does not have a dispersion compensation function . Phase-sensitive optical amplifier (PSA) because of the optical gain phase Mintel , not only capable of amplifying the optical pulse energy , but also has the function of phase filtering , i.e. it is possible to suppress the broadening of the light pulse . With the continuous improvement of the transmission rate of the system , the impact of polarization mode dispersion (PMD) is more and more serious , it has become one of the main factors limiting the development of high - speed optical communication . The step-by-step Fourier method , by solving the nonlinear Schrodinger equation , simulation to study the effect of EDFA and PSA PMD compensation in high-speed optical fiber communication systems . The paper first describes the impact of polarization mode dispersion of high-speed optical fiber communication systems , to compare the characteristics of EDFA and PSA given the EDFA and PSA system simulation model . Computer system simulation study were used in high - speed optical fiber communication systems the EDFA and PSA as line amplifiers in order dispersion , PMD , low-order nonlinear effect factors , focusing on comparative study to consider the group velocity dispersion (GVD), different the signal transmission rate, the shape of the light pulses , pulse chirp, the case of the pulse duty cycle, pulse power amplifier spacing , the amplifier gain , and a polarization mode dispersion , EDFA , and PSA of PMD compensation effect . The results show that the system rate is relatively low , EDFA , and the PSA system performance little difference, but when in the case of high-rate , PSA systems superior the EDFA system performance ; but also in the different simulation parameters of the EDFA and PSA system , the transmission performance of the system is not the same , the rational allocation of system parameters contribute to the improvement of system performance ; under the same parameter conditions , the PSA system performance is better than the performance of the EDFA system . In short, in the high - speed optical fiber communication system , PSA can be compensated to a certain extent on the polarization mode dispersion in the optical fiber communication systems , to improve the performance of the optical fiber transmission system . For PSA PSA applied to the study of the performance of high - speed optical fiber communication systems , optical fiber communication systems and the practical application of a certain reference value .

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