Towards applications: ultra-low-loss on-chip zero-index materials

a, Zero-index PhC slab without BICs. A photonic dipole mode forming the zero index results in out-of-plane radiation, dramatically increasing the propagation loss of the material. b, Zero-index PhC slab with a BIC. At a particular height, all the upward/downward out-of-plane radiation destructively interferes. Credit: Tian Dong, Jiujiu Liang, Philip Camayd-Muñoz, Yueyang Liu, Haoning Tang, […]