【摘要】 不同于一般的光波导,空芯金属包覆波导中超高阶导模的有效折射率可处于0<N<1区域,该特征不仅使导模的激发可采用简单易行的自由空间耦合技术,而且使超高阶导模具有高功率密度、高品质因子(Q值)和高灵敏度等特性.利用这些优点,分析了空芯金属包覆波导在环境保护、食品安全、生物分子相互作用和拉曼、荧光增强等传感领域的应用.更多还原

【Abstract】 Different from the general optical waveguides,the effective index of the ultrahigh order modes in the hollow-core metal cladding waveguide may exist the area of 0 < N < 1,which not only makes it possible to use the freespace coupling technique,but also greatlly enhance the power density,quality factor and sensitivity of the ultrahigh order modes. With these performance the application analysis of the environmental protection,food security,biomolecular interaction and enhancement of Raman and fluorescence spectrum are carried out.更多还原