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首页> 外文期刊>Microwave and optical technology letters >GROUP-DELAY CHARACTERIZATION OF CASCADED CHIRPED FIBER-BRAGG-GRATING DISPERSION COMPENSATORS
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GROUP-DELAY CHARACTERIZATION OF CASCADED CHIRPED FIBER-BRAGG-GRATING DISPERSION COMPENSATORS

机译：级联的形光纤布拉格光栅色散补偿器的群时延特性

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摘要

Based on linear-system theory, a method to obtain the total group-delay characteristics of the cascaded chirped fiber Bragg grating (FBG) from the measured group delays of each grating is proposed. The method is then used to characterize cascaded chirped FBGs used as the dispersion compensators of an experimental eight-channel 10-Gb/s NRZ system over 1500-km G.652 fiber. The inband total local-dispersion deviation curve is calculated and shows good consistency with the tendency of the inband BER fluctuations, which indicates that the inband local dispersion deviation may be the main reason for the dependence of such a system performance on signal wavelength, and its RMS value can be taken as the indicator of performance tolerance to wavelength instability. Numerical simulation is also performed, by which a near linear scaling of the simulated EOF with total local-dispersion deviation is shown.
机译：提出了一种基于线性系统理论的级联chi光纤布拉格光栅总群时延特性的方法。然后，该方法用于表征级联线性调频光纤光栅，这些光纤光栅用作1500公里G.652光纤上的实验八通道10 Gb / s NRZ系统的色散补偿器。计算得到的带内总色散偏差曲线与带内BER波动趋势显示出良好的一致性，这表明带内局部色散偏差可能是这种系统性能依赖于信号波长的主要原因，并且RMS值可以用作对波长不稳定性的性能容忍度的指标。还执行了数值模拟，通过该数值模拟显示了具有总局部分散偏差的模拟EOF的接近线性比例。

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