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1·The measurements of optical-waveguide mode and propagation loss indicate that the film is of good optical waveguide properties with low loss.

膜表面粗糙度很小。光波导模式和光损耗测量表明膜具有较低的损耗。

2·The propagation loss in the waveguide of this device is about 7 dB/cm. The factors causing the crosstalk and the loss in this device were analyzed.

文中最后分析了导致器件中串音和损耗的各因素，并提出了可能的改进方法。

3·The dispersion and propagation loss can be reduced significantly by properly choosing the thicknesses of the two magnetic films and separation layer.

分析了两个磁性层和间隔层的厚度对静磁后向体波色散和传播损耗的影响。

4·The results show that reflection from rough sea surface is an important factor in calculating propagation loss over rough sea and a knife-edge in the presence of rough sea surface.

结果表明来自粗糙海面的反射是计算雷达波沿粗糙海面传播损耗和刃形峰对雷达波衍射损耗的不可忽视的重要因素。

5·The principles of the common methods to measurement the propagation loss of the NLO polymer film optical waveguide are summarized, and the typical experimental arrangements are presented.

文章综述了测量非线性光学(nlo)聚合物薄膜材料光波导传输损耗的三种新方法及原理，分别给出了典型的实验装置结构图，并对它们的特点进行了比较。

6·In the paper, the method of test about OE-PCB was reviewed. Including mainly Refractive Index, Optical Propagation Loss, Surface Roughness, Eye Pattern, Bite Error Rate test and Environment Impact.

文章介绍了印制光-电路板的测试方法，主要包括光波导的折射率测试、光传输损失测试、表面粗糙度测试、眼图测试、误码率测试、环境测试。

7·Propagation model for bent planar waveguides is presented for calculating bent loss in planar waveguides.

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。

8·Four propagation models of diffraction, line-of-sight, scatting and duct are analyzed. The basic transmission loss for each of the models is calculated according to the ITU-R model and GZB model.

分析了电波的地波绕射传播、视距传播、散射传播和波导传播等四种传播模式，根据ITU - R和GZB建议的模型分别计算了各传播模式的基本传输损耗。

9·Propagation of high intensity laser beams through long air paths suffering from energy loss and beam quality deterioration was experimentally demonstrated.

研究了强激光长程空气传输过程中主光束能量损耗与光束质量退化效应。

10·Due to the propagation mode mismatch of the two structures, optical loss becomes inevitable.

不过由于两种结构中模式匹配的问题，光在传播的损耗在所难免。