[17p-A34-1~17] 3.10 Photonic structures and phenomena

5:15 PM - 5:30 PM JST(8:15 AM - 8:30 AM UTC)

[17p-A34-16] Topological insulating state in glide-symmetric photonic crystal waveguide solely by gain and loss

〇Takahiro Uemura^1,2, Yuto Moritake¹, Kenta Takata^2,3, Masaya Notomi^1,2,3 (1.TokyoTech, 2.NTT BRL, 3.NTT NPC)

Keywords:

photonic crystal,non-Hermitian optics

One of the intriguing properties of non-Hermitian optical systems is the emergence of topological features. Previous studies have reported methods to induce optical topological states using only parity-time (PT) symmetric perturbations, but there have been no applications to photonic crystals. In this paper, we report a new method to generate topological states by introducing a double periodic gain/loss perturbation into glide-symmetry photonic crystal waveguides.