| 1. | The function n(x, y)is known as the refractive index profile .
函数n（x，y）称为折射率分布。 |
| 2. | Fiber optics - refractive index profile , refracted ray method
光纤.用折射线法测量折射率 |
| 3. | Modes of a planar optical waveguide with fermi index profile
型折射率分布平面光波导的模式 |
| 4. | Prediction - verification method determining the refractive index profile for ion - exchange planar waveguide
确定离子交换平面波导折射率分布的预测-校验法 |
| 5. | The curve of index profile of planar waveguide was drawn by wkb method . the near field figure of channel waveguide at
并测试了632 . 8nm波长的激光通过沟道波导后的近场图。 |
| 6. | The variational problem related to the coupled vector wave equations and boundary conditions of circular dielectric waveguide with arbitrary refractive index profile is solved using the finite element method ( fem )
应用有限元方法求解了任意径向非均匀折射率分布圆柱对称介质波导中纵向场耦合波动方程定解问题所对应的变分问题，该方法不受弱导或高斯模场分布等限制。 |
| 7. | The equation is also a unified approach to the design of common trible - clad optical fibers . by genetic algorithm , the optimized refractive index profile ( rip ) of dcf is calculated to obtain maximal value of negative dispersion . this rip ensures the propagation of basic mode in dcfs
然后根据色散方程(特征方程) ，用基因法优化色散补偿光纤的负色散，得到了求得最大负色散时的色散补偿光纤的光纤结构，同时保证基模在光纤中的传输。 |
| 8. | With former people ' s work , an appropriate method is applied to our analysis and design : a reasonable relation between refractive index profile in model and parameters in the fabrication technology is proposed , and on this basis single mode performance and half wave voltage are analyzed by vectorial fem
结合前人的结果，本文提出了在针对本项研究课题的解决方法：根据一定的折射率分布模型，结合实际的工艺条件，选择合理的参数作为分布模型中的参数，然后做矢量有限元分析。 |
| 9. | The mode refractive index of 632 . 8nm wavelength , which propagates in ion - exchanged planar waveguides , is obtained by m line technology ; the serious problems of silver film ion - exchange also be pointed out . the refractive index profile of planar waveguide is obtained with inverse wentzel - kramer - brillouin method by measured mode refractive index . finally , some improvements of silver film ion - exchange is put forward
最后介绍了银膜电场辅助法制备光波导的试验过程,对实验获得的参数进行了分析和计算,得到了波导的模折射率和折射率变化的函数曲线,随后对在试验过程中遇到的一些问题和现象进行了阐述,分析了其产生的原因,并提出了自己的观点和改进的办法。 |
| 10. | For many experiments , using high pureness mma , controlling polymerization temperature and polymerizing condition under high - pressure nitrogen gas and heat treatment after polymerization , a transparent preform without any bubble and blemishes was prepared . then drawing this preform , gi - pof with diameter 0 . 8 - 1 . 0mm was obtained . because of the limitation of the experimental conditions and the shortage of the money , it is very regretted that we ca n ' t test the index profile and the loss of the gi - pof accurately
在系统研究界面凝胶法原理和聚合机理的基础上，通过多次实验总结、改进，在制备过程中采用提高精馏效率、控制温度、加压聚合、氮气保护和后期处理等措施，制备出无气泡及银纹缺陷、光洁、透明的光纤预制棒，拉丝得到直径0 . 8 - 1 . 0mm的gi - pof 。 |
