Frontiers of Optoelectronics, Volume. 2, Issue 2, 182(2009)
Transmission-type SPR sensor based on coupling of surface plasmons to radiation modes using a dielectric grating
Atransmission-type surface plasmon resonance (SPR) sensor is presented. In the transmission-type SPR structure, surface plasmonwaves are outcoupled to radiation modes by the use of dielectric grating on a thin-film layer of Ag. Compared with the traditional reflection-type SPR sensor, the new method provides larger detectable range, which might be useful to investigate thick targets such as in cell analysis. Theoretical simulations show that the structures provide high transmission efficiency for surface plasmon resonance and the devices present extremely linear sensing characteristics. Furthermore, it is found that the transmission efficiency and the refractive index detection sensitivity of the SPR sensor can be improved by the use of a lower refractive index glass prism.
Get Citation
Copy Citation Text
Changkui HU, Deming LIU. Transmission-type SPR sensor based on coupling of surface plasmons to radiation modes using a dielectric grating[J]. Frontiers of Optoelectronics, 2009, 2(2): 182
Received: --
Accepted: --
Published Online: Oct. 8, 2012
The Author Email: