Article ID Journal Published Year Pages File Type
7133290 Sensors and Actuators A: Physical 2018 25 Pages PDF
Abstract
A novel and simple sensing scheme based on the giant Goos-Hanchen shift enhanced by the excitation of the Bloch surface wave in a truncated one-dimensional photonic crystal structure is proposed and experimentally demonstrated. The significantly enhanced Goos-Hanchen shift is directly measured by a position sensitive detector and the following amplifier. The bulk refractive index sensitivity of the sensor is investigated by utilizing sodium chloride solutions and glycerol solutions with different concentrations as test samples. The results show that the Goos-Hanchen shift sensor has a superior sensitivity of 2.0*10−9 RIU/nm, which outperforms the SPR enhanced Goos-Hanchen shift sensors.
Related Topics
Physical Sciences and Engineering Chemistry Electrochemistry
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