Figure | Transition from one bound singularity to a two-dimensional exceptional ring. (IMAGE)

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

Figure | Transition from one bound singularity to a two-dimensional exceptional ring.

Caption

Figure | Transition from one bound singularity to a two-dimensional exceptional ring. a, Schematic of the transition of one BIC point to an exceptional ring in a designed unit cell. b, c The real and imaginary parts of the calculated eigenmodes in momentum spaces.

Credit

Caihong Zhang et al.

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