[11a-W631-1~10] 3.11 Photonic structures and phenomena

△ [11a-W631-8] Terahertz Waveguides Using Photonic Topological Insulators

〇Yuichiro Yamagami¹, Yihao Yang², Xiongbin Yu¹, Masayuki Fujita¹, Tadao Nagatsuma¹, Ranjan Singh² (1.Osaka Univ., 2.Nanyang Tech. Univ.)

Keywords:photonic topological insulator, terahertz, photonic crystal

We present a novel device that combines the concept of a topological insulator with terahertz photonics techniques. A waveguide with low bending loss was designed for the terahertz band, with significant potential for future terahertz communications and sensing applications. We have experimentally demonstrated the operation, and low bending loss, of a 0.3 THz band photonic topological insulator waveguide fabricated from high resistivity silicon.