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采用有效折射率方法计算了 SOI弯曲波导由于辐射损耗引起模式截止的最小弯曲半径 ,得到了一个估算弯曲波导的最小弯曲半径的解析表达式
An effective refractive index method is used to calculate the minimum bend radius of the SOI bend waveguide due to the radiation loss caused by the mode cutoff. An analytical expression for estimating the minimum bend radius of the bend waveguide is obtained