在众多的波导模拟工具中变分有效折射率法和有限差分束传播法都是实用性非常强的。
Variational-Effective index method and Finite difference beam propagation method(FD-BPM) are both practicable waveguide simulation tools.
耦合剂的折射率对得到高的光输出也起着非常重要的作用。
Refractive index of the couplant plays an important role for obtaining high light output.
但是其折射率分辨率对金属膜厚度非常敏感，影响了SPR传感器的适用性。
However, this ri resolution is very sensitive to the thickness of metal films, deteriorating the adaptability of SPR sensors.
对特定的带宽，增加两种薄膜材料的折射率差和选择尽可能低的最外层折射率对获得优良的减反射特性是非常重要的。
For certain bandwidth, increasing difference between high and low index and selecting out-layer material with low index are very important for achieving an excellent anti-reflectance performance.
对特定的带宽，增加两种薄膜材料的折射率差和选择尽可能低的最外层折射率对获得优良的减反射特性是非常重要的。
For certain bandwidth, increasing difference between high and low index and selecting out-layer material with low index are very important for achieving an excellent anti-reflectance performance.
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