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在阵列波导光栅(AWG)波分复用器件中用重叠积分方法和BPM方法模拟计算波导耦合系数的比较研究
Comparative Study on Waveguide Coupling Coefficient Simulated by Overlapped Integral Method and BPM Method in Array Waveguide Grating (AWG) Wavelength Division Multiplexing Device