Abstract
Topological systems and theories have been flexibly combined with many other systems such as photonic, acoustic and electrical circuit systems. Specifically, topological circuits have been widely explored and used due to the convenience of reconstructing and experimental realizing. In the meantime, waveguide arrays also play an important role in topological systems, which may support strongly stability and protection in topological edge states. There are various types of waveguide arrays supporting topological states such as electromagnetic waves and acoustic waves which has supported topological edge states and corner states. We explore a two-dimensional waveguide network with out-of-plane crossed-wire connection at the interface on top of each other, and will bend the waveguides to form different coupling parameters to further construct topological circuits.
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