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本文利用耦合模方程，对具有不同函数形状耦合系数的光纤光栅的色散特性进行了理论和数值研究．通过比较这些线性咽啾光纤光栅对１０Ｇｂ／ｓ光通信系统色散补偿的效果，揭示了光纤光栅的耦合系数与其色散补偿性能的关系．
In this paper, the coupling mode equations are used to study the dispersion characteristics of fiber gratings with different coupling coefficients. By comparing the effects of these linear phasic chirped fiber gratings on the dispersion compensation of 10Gb / s optical communication system, the relationship between the coupling coefficient of fiber grating and its dispersion compensation performance is revealed.