光学学报, 2008, 28 (5): 835, 网络出版: 2008-05-20
双波长数据包并行缓存
Parallel Buffering of Dual-Wavelength Packets Data
光通信 双波长并行缓存 双环耦合全光缓存器 半导体光放大器 增益饱和 交叉相位调制 optical communication dual-wavelength parallel buffering dual-loop optical buffer semiconductor optical amplifier (SOA) gain saturation crossing phase modulation
摘要
以半导体光放大器为非线性元件的双环耦合全光缓存器(DLOB)为基础,实现了速率为2.5 Gb/s双波长数据的并行缓存。不同波长光信号合成后的功率随机波动,导致由半导体光放大器交叉相位调制产生的相位差随机波动。在考虑吸收损耗的情况下,对常用的半导体光放大器增益特性曲线进行了修正并与实测值拟合,得到了更为准确的增益特性曲线。在此基础上进行了理论分析,提出了通过调节控制光功率到最佳点以便减小相位差波动的方法。
Abstract
A 2.5 Gb/s dual-wavelength packets parallel buffering in dual-loop optical buffer (DLOB) adopting semiconductor optical amplifier (SOA) as the nonlinear element was demonstrated. Because of the random fluctuation of the combined power by different wavelength signals, the phase difference originating from the cross phase modulation of SOA fluctuates randomly too. Taking the absorption loss into account, we modify the gain characteristic curve of SOA and fit it with experimental values. The characteristic curve is described exactly. We also theoretically analyze the dual-wavelength buffering and propose to set the power of control signal to minimize the fluctuation of the phase difference.
彭鹏, 吴重庆, 田昌勇, 李亚捷, 郭宁. 双波长数据包并行缓存[J]. 光学学报, 2008, 28(5): 835. Peng Peng, Wu Chongqing, Tian Changyong, Li Yajie, Guo Ning. Parallel Buffering of Dual-Wavelength Packets Data[J]. Acta Optica Sinica, 2008, 28(5): 835.