A novel transmitter to generate a dark RZ signal with tunable duty cycle and extinction ratio is proposed, by modifying the process of preceding, modulating and coding, A dark RZ signal is generated simply by using on...A novel transmitter to generate a dark RZ signal with tunable duty cycle and extinction ratio is proposed, by modifying the process of preceding, modulating and coding, A dark RZ signal is generated simply by using one dual-arm Mach-Zehnder LiNbO3 modulator. We demonstrate experimentally that this optical dark RZ signal can be directly measured by a conventional binary intensity modulation direct detection （IM-DD） receiver. When different values of duty cycles at 2.5 Gbit/s are adjusted, the experimental results show different BER curves and eye diagrams of the optical dark RZ signal.展开更多
目前光网络的发展已从狂热追捧回归到理性发展,逐渐集中到切实解决阻碍光网络发展普及的技术障碍的正确轨道上来了。本文综述了近期光网络研究的热点:关键器件、网络控制与管理、故障管理、光组播技术、IP over WDM、流量整合疏导、光...目前光网络的发展已从狂热追捧回归到理性发展,逐渐集中到切实解决阻碍光网络发展普及的技术障碍的正确轨道上来了。本文综述了近期光网络研究的热点:关键器件、网络控制与管理、故障管理、光组播技术、IP over WDM、流量整合疏导、光分组交换和智能自动交换光网络等。展开更多
基金This work is supported by the National Natural Science Founda-tion of China (Grant No.10576012)the Specialized ResearchFund for the Doctoral Program of Higher Education of China(Grant No.20040532005)
文摘A novel transmitter to generate a dark RZ signal with tunable duty cycle and extinction ratio is proposed, by modifying the process of preceding, modulating and coding, A dark RZ signal is generated simply by using one dual-arm Mach-Zehnder LiNbO3 modulator. We demonstrate experimentally that this optical dark RZ signal can be directly measured by a conventional binary intensity modulation direct detection （IM-DD） receiver. When different values of duty cycles at 2.5 Gbit/s are adjusted, the experimental results show different BER curves and eye diagrams of the optical dark RZ signal.
