Title :
A Novel LRSPP Based Refractive Index Sensor
Author :
Liu, Fang ; Rao, Yi ; Huang, Yidong ; Ohnishi, Dai ; Zhang, Wei ; Peng, Jiangde
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing
Abstract :
A novel three-layer sensor based on LRSPP is proposed for detecting the refractive index changes, especially in the biosensor field. We find that the loss and electromagnetic field size of LRSPP are sensitive to the refractive index of detection substance. By measuring the output power or (and) field size of LRSPP, we can detect the refractive index changes of detection substance. LRSPP field size is a new parameter here for refractive index change detection and may lead to a much higher sensitivity compared to current SPP biosensors.
Keywords :
biosensors; electromagnetic fields; optical sensors; refractive index measurement; surface electromagnetic waves; surface plasmons; LRSPP based refractive index sensor; biosensor field; detection substance; electromagnetic field; long rang surface plasmon polariton; three-layer sensor; Biosensors; Dielectric substrates; Electromagnetic fields; Optical films; Optical sensors; Optical surface waves; Power generation; Propagation constant; Propagation losses; Refractive index;
Conference_Titel :
Biophotonics, Nanophotonics and Metamaterials, 2006. Metamaterials 2006. International Symposium on
Conference_Location :
Hangzhou
Print_ISBN :
0-7803-9773-8
Electronic_ISBN :
0-7803-9774-6
DOI :
10.1109/METAMAT.2006.335009
