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以光束传播法（ＢＰＭ）分析马赫－陈德尔（Ｍａｃｈ－Ｚｅｈｎｄｅｒ）型波导电光强度调制器的波导宽度、Ｙ型分支角、调制电压等参量与器件特性之间的关系，有利于Ｍ－Ｚ波导电光调制器的优化设计。
The relationship between the waveguide width, the Y-branch angle, the modulation voltage and other parameters of the Mach-Zehnder waveguide optical intensity modulator is analyzed by the beam propagation method (BPM), which is in favor of the M-Z waveguide Optimal design of electro-optic modulator.