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利用有效折射率法分析了Ge0.05Si0.95／Si脊形光波导的光场分布，得到了这种光波导在传输单模时内脊高b、外脊高h和脊宽W的合理取值，还为其它光波导器件的设计奠定了基础。
The optical field distribution of the Ge0.05Si0.95 / Si ridge waveguide is analyzed by the effective refractive index method. The reason why the inner diameter ridge b, the outer ridge height h and the ridge width W are reasonable when the optical waveguide transmits the single mode Value, but also laid the foundation for the design of other optical waveguide devices.