Figure 1 | Schematic diagram of an ultra-low-loss on-chip zero-index PhC slab based on a bound state in the continuum. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Figure 1 | Schematic diagram of an ultra-low-loss on-chip zero-index PhC slab based on a bound state in the continuum.

Caption

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

by Tian Dong, Jiujiu Liang, Philip Camayd-Muñoz, Yueyang Liu, Haoning Tang, Shota Kita, Peipei Chen, Xiaojun Wu, Weiguo Chu, Eric Mazur, and Yang Li

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