Properties of mode conversion in a nonlinear conical graded index medium are investigated.

研究非线性锥型梯度折射率媒质中的模式变换特性。

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They then cascaded the negative index medium with a positive refractive index medium so that the complete nanostructure behaved as one with an index of refraction of zero.

他们将负折射率材料和正折射率材料级联起来成功实现了零折射率行为的纳米结构。

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The technique can image variations in what is known as the refractive index of air - in essence, the speed of light in a given medium.

这项技术能够使空气折射率图形化-本质上就是特定介质下的光速。

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