生物传感中平板光波导模式研究

为提高生物传感探测的灵敏度和响应速度，基于平面光波导理论，运用消逝场原理在生物传感领域的应用，在相同条件下比较了平面波导单模和多模2种模式下消逝场区域能量的大小，并且用VC和Matlab工具模拟论证单模能量高于多模。理论计算表明：单模和多模的荧光效率分别为5.83%和1.75%，在此计算中单模的荧光效率比多模的高。因此，在生物传感及其相关应用中，选用平板光波导的单模模式具有一定的优越性，为实际设计提供了理论依据。

Planar optical waveguide mode in biosensing

In order to improve the detection sensitivity and increase the response speed of the biosensor, based on the theory of planar waveguide, the zone energies of the evanescent fields in the single mode and multimode of the planar optical waveguide were compared under the same condition by using the principle of the evanescent field applied to the biosensing field. It is proved that the energy of the single mode is higher than that of the multimode by VC and Matlab. The theoretical calculation indicates that the fluorescence efficiency of single mode is 5.83% and multimode is 1.75%. Therefore, the single mode of planar optical waveguide is a better alternative in the application of biosensors and the relative area.