Long-span repeaterless transmission systems with optical amplifiers using pulse width management
Long-span repeaterless transmission systems with optical amplifiers using pulse width management
复制标题
具有使用脉冲宽度管理的光放大器的大跨度无中继器传输系统
DOI：
10.1109/50.681453
复制
发表时间：
1998
影响因子：
4.7
通讯作者：
K. Hagimoto
中科院分区：
文献类型：
--
作者：
A. Sano;Y. Miyamoto;T. Kataoka;K. Hagimoto
本文提出了脉冲宽度管理，以扩大光放大器无中继传输系统的中继站间距。首先，通过数值分析阐明了接收机灵敏度对占空比、接收机响应和光纤色散的依赖性。其次，实验验证了灵敏度作为信号格式和接收机基带响应的函数的计算结果。此外，我们表明，脉冲宽度管理，它使用返回到零（RZ）格式与大占空比（/spl sim/0.7）在发射机和脉冲压缩在接收机增加中继器增益/spl sim/4.5 dB相比，传统的系统采用不归零（NRZ）格式。通过利用脉冲宽度管理，以10 Gb/s实现了300 km的记录中继器间距。
This paper proposes pulse width management in order to extend the repeater spacings of repeaterless transmission systems with optical amplifiers. First, the dependency of receiver sensitivity on duty ratio, receiver response, and fiber dispersion is clarified by numerical analysis. Next, the calculation results of sensitivity as a function of signal format and receiver basedband response are verified experimentally. Moreover, we show that pulse width management which uses return-to-zero (RZ) format with large duty ratio (/spl sim/0.7) at the transmitter and pulse compression at the receiver increases the repeater gain by /spl sim/4.5 dB compared to conventional systems employing nonreturn-to-zero (NRZ) format. Record repeater spacing of 300 km is realized at 10 Gb/s by utilizing pulse width management.