最后，文中给出了一个利用这种等效方法计算弯曲波导损耗的例子。
The bending loss of a SOI bent waveguide is also calculated with the present and conventional EIMs respectively.
弯曲波导是平面光波导器件中不可缺少的结构单元。
Bent waveguide is an indispensable unit of structure used in PLC (Planar Lightwave Circuit).
为了数值求解平面光波导的弯曲损耗，首先给出了平面弯曲光波导的传输模型。
Propagation model for bent planar waveguides is presented for calculating bent loss in planar waveguides.
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