| 光通信中DOPSK信号的解调与传输性能研究 |
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| 引用本文： | 李晓军,刘增基,文爱军,吕亮.光通信中DOPSK信号的解调与传输性能研究[J].西安电子科技大学学报,2009,36(4):669-674. |
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| 作者姓名： | 李晓军 刘增基 文爱军 吕亮 |
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| 作者单位： | 李晓军(西安电子科技大学综合业务网理论及关键技术国家重点实验室,陕西,西安,710071;西安电子科技大学理学院,陕西,西安,710071);刘增基,文爱军,吕亮(西安电子科技大学综合业务网理论及关键技术国家重点实验室,陕西,西安,710071) |
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| 基金项目： | 高等学校学科创新强智计划资助 |
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| 摘 要： | 依据马赫-曾德尔延时相干平衡检测模块的工作原理,对于差分八进制相移键控调制格式提出了一种改进的解调方案,理论证明该方案能够对差分八进制相移键控光信号进行正确解调.采用该解调方法,仿真研究了单信道中差分八进制相移键控调制格式的色散和非线性传输性能,结果表明,差分八进制相移键控的色散容忍度高于其他低进制的调制格式,其非线性客忍度低于差分二进制相移键控和差分四进制相移键控,但高于普通的二进制幅度键控.
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| 关 键 词： | 光通信 色散 光纤 非线性光学 相位调制 |
| 收稿时间： | 2008-12-01 |
Demodulation scheme and transmission performance study of the DOPSK signal in optical communication |
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| LI Xiao-jun,LIU Zeng-ji,WEN Ai-jun,Lü Liang.Demodulation scheme and transmission performance study of the DOPSK signal in optical communication[J].Journal of Xidian University,2009,36(4):669-674. |
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| Authors: | LI Xiao-jun LIU Zeng-ji WEN Ai-jun Lü Liang |
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| Affiliation: | (1. State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an 710071， China;
2. School of Science, Xidian Univ., Xi'an 710071， China) |
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| Abstract: | Based on the principle of the Mach-Zehnder Delay interferometer and balanced detector, an improved demodulation method is suggested for the ODOPSK modulation format. It is theoretically proved that this method could be used to demodulate the DOPSK signal correctly. Then the transmission performance of RZ-DOPSK in the single-channel is simulatively studied. It is shown that the chromatic dispersion tolerance of RZ-DOPSK is larger than that of other modulation formats, and that the nonlinear tolerance is smaller than that of RZ-DQPSK and RZ-DBPSK, but much larger than that of RZ-BASK. |
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| Keywords: | optical communication chromatic dispersion fibers nonlinear optics phase modulation |
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