提出了一种适合于宽带消波长依存波导耦合器的统计优化设计方法。使用该方法 ,在 12 80nm～ 165 0nm带域内 ,对Si基SiO2 光波导作了包括偏振变动优化在内的 5 0 %和 2 0 %功率耦合比的消波长依存波导耦合器的设计。两个器件经三维波束传播法 (BPM)模拟运行验证 ,结果表明 ,在 370nm宽带内 ,两个直交偏振态均实现了功率耦合比为 (5 0± 2 .1) %和 (2 0± 1.4) %、偏振变动量分别小于 0 .65 %和 0 .2 0 %的良好特性 A statistical optimization design method suitable for wideband wavelength-dependent waveguide couplers is proposed. Using this method, the design of a wavelength dependent waveguide coupler with 50% and 20% power coupling ratio including polarization variation optimization for Si-based SiO2 optical waveguide has been made in the 1280nm ~ 165 0nm band. The two devices were verified by three-dimensional beam propagation (BPM) simulation. The results show that the two orthogonal polarizations achieve (50 ± 2 .1)% and (20 ± 1.4)% )%, The polarization variation is less than 0.65% and 0.2% of the good features