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采用化学电沉积方法制备了银树枝状结构光波段超材料,测试了其光学性能.结果表明,超材料在光波段出现了明显的多通带透射峰,在透射峰值波长位置测试出明显的平板聚焦效应.采用银树枝结构光波段超材料制作了一种异质结构透明楔形光波导,通过光纤探头在光波导外表面的移动,研究了光波导对光波谱的响应.实验结果表明,不同频率的光波包被停留在楔形波导不同厚度处,从而形成了光谱的空间分离现象.这种超材料楔形光波导可以通过改变楔角大小来实现对光谱空间分离的有效调节,在慢光研究和光存储等领域有广阔应用前景.
The optical properties of silver dendritic structure were tested by chemical electrodeposition.The results showed that there was a clear multipass transmission band in the light band of the metamaterials, and the obvious plate was tested at the position of the transmission peak wavelength The effect of optical waveguides on the light spectrum was studied by the movement of optical fiber probe on the outer surface of the optical waveguide.The experimental results show that the different frequency Of the light wave packet stays in the wedge waveguide at different thickness, resulting in the spatial separation of the spectrum of the metamaterial wedge waveguide can be achieved by changing the size of the wedge angle spectral separation of the effective regulation in the slow light research and optical storage Other fields have broad application prospects.