Zinkiewicz Łukasz, Haberko Jakub, Wasylczyk Piotr
Opt Express. 2015 Feb 23;23(4):4206-11. doi: 10.1364/OE.23.004206.
We demonstrate a photonic structure, composed of a dielectric quarter-wavelength stack topped with a transmission phase grating, designed to exhibit a significant asymmetry in the near infrared light transmission for waves propagating in opposite directions. The asymmetry, defined as the difference between the intensity transmission coefficients, reaches 0.72 ± 0.06 for a single wavelength and exceeds 0.2 over a spectral range spanning from 700 to 850 nm for one incident polarization and 750-800 nm for both polarizations. The experimental results are consistent with the numerical model of light propagation in the structure.
我们展示了一种光子结构，它由一个介质四分之一波长堆叠结构顶部加上一个透射相位光栅组成，设计用于在近红外光传输中，对沿相反方向传播的波表现出显著的不对称性。这种不对称性定义为强度传输系数之间的差异，对于单个波长，其值达到0.72±0.06，并且在一个入射偏振的700至850纳米光谱范围内以及两个偏振的750 - 800纳米光谱范围内，该差异超过0.2。实验结果与该结构中光传播的数值模型一致。
