[19p-211B-1~14] 4.1 Plasmonics and Nanophotonics

▲ [19p-211B-14] Considering the Origin of Surface Plasmon Polaritons for a Surface Plasmon Sensor with 1D Metal Grating Structure and Characterization of Sensitivity

〇Atsushi Motogaito^1,2, Yusuke Ito¹, Hideto Miyake³, Kazumasa Hiramatsu³ (1.Grad. Sch. Eng., Mie Univ., 2.Iga Satellite, Mie Univ., 3.Grad.Sch. Reg. Innov., Mie Univ.)

Keywords:surface plasmon sensor, transmittance, sensitivity

Theoretical consideration for a surface plasmon sensor with 1D metal grating structure performed using transmittance mapping calculated via the RCWA method and our experimental data. In addition, we considered the applicability of this technique to the sensor and estimated the FOM. The SPPs are excited to two types of interfaces, such as Au-glass substrate and Au-medium. The sensor properties were characterized. The sensor was found to have a considerably high FOM value (~40) when the period of of the 1D metal grating was 300nm.