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机构地区:[1]长春理工大学电子信息工程学院,长春130022 [2]中国科学院长春光学精密机械与物理研究所,长春130033 [3]吉林省电力有限公司通信分公司,长春130021
出 处:《半导体光电》2011年第6期857-861,共5页Semiconductor Optoelectronics
摘 要:构建了非归零码、归零码、载波抑制归零码、光双二进制码、改进的双二进制归零码等五种光强度调制格式在40Gb/s系统中的单信道传输模型,并采用OptiSystem7.0软件对其进行了仿真。分析比较了这五种调制格式的光谱图和眼图在非线性容限、色散容限、传输距离方面的优缺点,总结了它们的基本性能及应用场合。结果表明,MDRZ具有非线性容忍度最高、频谱效率高、色散容忍度较高及传输距离较远等特点,是高速光纤通信系统中很有潜力的调制格式。Abstract. The transmitting models of five luminous intensity modulation formats, including non-return-to-zero ( NRZ), return-to-zero ( RZ), carrier-suppressed-return-to-zero (CSRZ), optical-doubled-bit (ODB), and modified-doubled-return-to-zero (MDRZ), were constructed in the single channel of 40 Gb/s optical communication system. And OptiSystem 7.0 was applied to make simulations on the five models. The advantages and disadvantages of the five modulation formats were presented in terms of non-linear tolerance, dispersion tolerance and transmission distance by comparatively analyzing their spectrograms and eye patterns. And the fundamental characteristics and applications were summarized. Simulations results show that MDRZ owns highest non-linear tolerance, supreme frequency spectrum efficiency, superior dispersion tolerance as well as long transmission distance, which make it to be a significantly potential moudulation formats in thigh-speed optrican commromication system.
关 键 词:高速光纤通信 调制格式 仿真 OPTISYSTEM
分 类 号:TN929.11[电子电信—通信与信息系统]
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