lower excess meaning in Chinese

下实

Using the beam propagation method ( bpm ) simulation , we confirm that wide controllability of the branching ratio and low excess loss can be realized by this structure
用bpm方法模拟的结果表明，此结构实现了50 - 94的不对称分支比，并且具有低的附加损耗的特点。
We propose a novel and simple y - branch configuration with simox soi wafers in order to achieve an asymmetric branching ration and low excess loss . the proposed structure only deviate the center axes of input taper wave - guides
我们用soi晶片设计了一种新型的y分支型功率分配器，此结构通过改变中心轴线的位移值即可实现不同的功率分配的功能。
The numerical and experimental results of this y - branch structure indicate that the proposed y - branch structure , without extra fabrication technologies , has a lower excess loss as compared with the conventional ones . optimal designs of the structural parameters for the multimode interference coupler are carried out . low loss and high uniformity of the multimode interference couplers are achieved when the waveguide is weakly guiding
研究了y分支耦合器中分支顶端间距(为工艺制作方便)带来的附加损耗，提出了低损耗新型y分支耦合器结构，并给出了相关结构参数的优化设计方法，我们的理论计算和实验测试结果均表明，该新型结构可以在常规光波导制作工艺下提高器件的指标。