[17p-A404-1~14] 3.16 Optics and Photonics English Session

▲ [17p-A404-12] Numerical Study of on a Surface-normal Normal Metasurface Plasmonic Modulator using EO Polymer

〇(D)Jiaqi Zhang¹、Yuji Kosugi¹、Yoshiaki Nakano¹、Takuo Tanemura^1,2 (1.The Univ of Tokyo、2.JST PRESTO)

キーワード：plasmonic, metasurface, modulator

A surface-normal plasmonic metasurface modulator using electro-optic (EO) polymer is proposed and numerically demonstrated. When two modes resonant together at the anti-crossing point, a sharp resonance with Q factor of 85 emerges. By using this high Q resonance, a 15 dB intensity modulation can be achieved with the refractive idnex change of only 8.5×10^-3, which corresponds to the driving voltage of only ±4.7 V. Moreover, owing to the ultra-small capacitance of EO polymer and high conductivity of Au, the RC bandwidth can be easily over 100 GHz.