Grating-coupled transmission-type surface plasmon resonance sensors based on dielectric and metallic gratings.
We investigated grating-coupled transmission-type surface plasmon resonance (SPR) for sensing applications. In the transmission-type SPR structure, propagating surface plasmons are outcoupled to radiation modes by dielectric and metallic gratings on a metal film. The results calculated in air and water suggest that the proposed structures present extremely linear sensing characteristics. In terms of a figure of merit, a metallic grating-based structure performs 5.4 and 3.7 times better than that of a dielectric grating in air and water, respectively.
Byun
Kyung Min
KM
School of Electrical Engineering and Computer Science, Seoul National University, South Korea.
Kim
Sung June
SJ
Kim
Donghyun
D