| 王现彬,杨洁,杨彦彬,贾英茜.啁啾管理调制格式在高速接入网中传输分析[J].光电子激光,2019,30(4):389~394 |
| 啁啾管理调制格式在高速接入网中传输分析 |
| Transmission analysis of chirped-managed modulation format in high speed access networks |
| 投稿时间：2018-09-02 |
| DOI： |
| 中文关键词: 啁啾管理 直接调制激光器 接入网 传输性能 |
| 英文关键词:chirp-managed directly modulated laser access networks transmission performa nce |
| 基金项目:河北省高等学校科学技术研究项目(Z2018023)和石家庄学院应用型课程开发与建设项目(YYKC-201816)资助项目 (石家庄学院机电学院,河北 石家庄 050000) |
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| 中文摘要: |
| 物联网、虚拟现实及人工智能等技术的发展加大 了对光纤接入无源光网络带宽的需求,其中调制器 成为制约无源光网络带宽的关键因素。结合了直接调制激光器和外调制器各自优势的啁啾管 理激光器以产 生结构简单、便于集成等特点受到了广泛关注。采用耦合速率方程理论研究了啁啾管理激光 器的动力学特 性,分析了40 Gbit/s啁啾管理调制格式的产生原理及时频域特性, 并在高速无色散补偿接入网中与由外调 制器产生的40 Gbit/s非归零调制格式进行了性能对比。结果表明 ,带宽为48.5 GHz的40 Gbit/s啁啾管理调 制格式在1dB灵敏度代价下所对应的色散容限为215 ps/nm,与非归 零调制格式相比其无色散补偿传输距离 增加了1.6倍,表现出了强的抗色散能力,在高速接入网中也体现了 较高的应用价值。相关结果可为实际系统设计提供理论参考。 |
| 英文摘要: |
| The developments of Internet of Things,Virtual Reality and Artificial Intelligence (AI) technology have increased the demand for bandwidth of optical fiber access passive optical netwo rk,in which the modulators have become a key factor restricting the bandwidth of passive optical network.Chirp -managed lasers,which combine the advantages of direct modulated lasers and external modulators,have attract ed wide attention for their simple structure and easy integration in low speed optical access network.The dynamic characteristics of chirp-managed lasers were studied by using coupled rate equation theory.The generation princi ple and time-frequency characteristics of 40Gbit/s chirp-managed modulation format were analyzed.The performance of the chirp-managed modulation format was compared with that of the 40Gbit/s non-re turn-to-zero (NRZ) signal generated by the external modulator in the high speed access network without dis persion compensation.The results show that the 40Gbit/s chirp-managed modulation format with a bandwidt h of 48.5GHz has a corresponding dispersion tolerance of 215ps/nm at the 1dB sensitivity penalty. Compared with NRZ modulation format,the transmission distance of chirp-managed modulation format without dispersion com pensation is increased by 1.6times,which shows a very strong anti-dispersion capability and embodies high a pplication values in high speed access networks.Relevant results provide a theoretical reference for the actual system design. |
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