Maclaurin-series method for calculating dispersion in arrayed-waveguide grating multiplexers.
Maclaurin-series method for calculating dispersion in arrayed-waveguide grating multiplexers.
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DOI：
10.1364/ao.49.000904
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发表时间：
2010-02
期刊：
影响因子：
1.9
通讯作者：
T. Hirose;K. Takada
中科院分区：
文献类型：
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作者：
T. Hirose;K. Takada
提出了一种计算阵列波导光栅(AWG)复用器中相位误差和幅度分布色散的Maclaurin级数方法。利用这种方法，我们可以很容易地求出通带中心频率区的色散的截距、梯度和曲率。利用测量到的频率间隔为12.5 GHz的AWG的相位误差和幅度分布，计算了三阶Maclaurin级数。计算结果与用光网络分析仪测得的色散符合得很好。我们还通过假设某些有限情况，讨论了位相误差对色散的物理影响。
We present a Maclaurin-series method for calculating the dispersion from phase error and amplitude distributions in arrayed waveguide grating (AWG) multiplexers. By using this method, we can easily derive the intercept, the gradient, and the curvature of the dispersion in the center frequency region of a passband. A third-order Maclaurin series was calculated by using the measured phase error and amplitude distributions of AWGs having a channel frequency spacing of 12.5 GHz. The calculated results are in good agreement with the dispersions measured with an optical network analyzer. We also discuss the physical effect of the phase error on dispersion by assuming certain limited cases.