Ramirez Jhonattan C, Lechuga Laura M, Gabrielli Lucas H, Hernandez-Figueroa Hugo E
Opt Express. 2015 May 4;23(9):11985-94. doi: 10.1364/OE.23.011985.
A novel evanescent wave biosensor based on modal interaction between the fundamental mode and the second order mode is proposed and numerically demonstrated. By taking advantage of their symmetries, it is possible to design a device where only the fundamental and the second order modes can propagate, without excitation of the first order mode. With this selection of modes it is possible to achieve a high sensitivity behavior in the biosensor configuration, due to the strong interaction between the evanescent field and the outer surface as compared to previous evanescent wave-based biosensor designs.
提出并通过数值验证了一种基于基模与二阶模之间模态相互作用的新型倏逝波生物传感器。利用它们的对称性，可以设计出一种仅基模和二阶模能够传播而不激发一阶模的器件。通过这种模式选择，由于与先前基于倏逝波的生物传感器设计相比，倏逝场与外表面之间的相互作用很强，因此在生物传感器配置中可以实现高灵敏度特性。
