10:00 AM - 10:15 AM △ [11a-W631-3] Topologically-Protected Circularly-Polarized Radiation in Photonic Crystal Slabs without Inversion Symmetry 〇(D)Taiki Yoda1,2, Masaya Notomi1,2,3 (1.Tokyo Tech., 2.NTT BRL, 3.NTT NPC)