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首页> 外文期刊>Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter >Extraction of laser rate equations parameters for representative simulations of metropolitan-area transmission systems and networks
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Extraction of laser rate equations parameters for representative simulations of metropolitan-area transmission systems and networks

机译：提取大城市区域传输系统和网络的代表性模拟的激光速率方程参数

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摘要

In this paper we present procedures for the extraction of laser rate equation parameters. The parameters are extracted using fitting of static and dynamic measurements with simple theoretical expressions. In particular, chirp related parameters are extracted directly through measured chirp and power waveforms. The extracted parameters are used in a large-signal rate equation laser model to calculate the power and chirp waveforms. The simulations are compared with experiments and the agreement is excellent. The procedures have been applied to directly modulated lasers having different chirp characteristics and designed for either 2.5 or 10 Gb/s operation. Using the rate equation laser model with the extracted parameters, we performed a simulation study to identify the value of employing a negative dispersion fiber in metro-area networks. It is shown that dispersion shifted fibers with negative dispersion across the entire usable fiber bandwidth (1280-1620 nm) advances the performance of directly modulated lasers used in wavelength division multiplexed metropolitan-area transmission systems and networks. At 2.5 Gb/s transmission over 300 km of negative dispersion fibers is possible for directly modulated lasers across the erbium doped fiber amplifier bandwidth, while at 10 Gb/s an impressive distance of 100 km can be achieved.
机译：在本文中，我们提出了提取激光速率方程参数的程序。通过使用简单的理论表达式对静态和动态测量值进行拟合来提取参数。特别是，通过测量的线性调频和功率波形直接提取线性调频相关的参数。提取的参数用于大信号速率方程式激光模型中，以计算功率和线性调频波形。仿真与实验进行了比较，一致性很好。该程序已应用于具有不同线性调频特性的直接调制激光器，并设计用于2.5或10 Gb / s操作。使用具有提取参数的速率方程式激光模型，我们进行了仿真研究，以确定在城域网中采用负色散光纤的价值。结果表明，在整个可用光纤带宽（1280-1620 nm）上具有负色散的色散位移光纤提高了波分复用城域传输系统和网络中使用的直接调制激光器的性能。在2.5 Gb / s的传输速率下，跨越掺do光纤放大器带宽的直接调制激光器可以实现300 km的负色散光纤传输，而在10 Gb / s的传输速率下，可以实现100 km的惊人传输距离。

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