Recent research in topological photonics has not only proposed and realized novel
topological phenomena such as one‐way broadband propagation and robust transport of …

A four-port optical circulator based on two-dimensional square lattice photonic crystals is
reported. It is simple besides the brief framework. The crystalline geometrical structure of the …

To achieve high concentration of Ce 3+ ions in Gd 3 Fe 5 O 12 (GIG) crystal, the structure of
co-doped Sc 3+ and Ce 3+ ions was designed and the doping energy was evaluated by the …

Resonator-based optical circulators are fundamentally bandwidth-limited by their quality
factors. We propose a new type of circulator based on directional coupling between one-way …

A new defect structure of two-dimensional magnetic-photonic crystal is given and a new
three-port Y-junction circulator using a ferrite cylinder is proposed in this short paper. Based …

The peculiarities of transmission and angular non-reciprocity in magneto-photonic crystals
(MPC) are investigated. The problem of light transmission through magneto-photonic crystal …

A multiplexer and demultiplexer (MUX/DEMUX) based on 2-D photonic crystals (PhCs) for a
dense wavelength division multiplexing (DWDM) system is presented. The designed …

Vacuum annealed polycrystalline cerium substituted yttrium iron garnet (CeYIG) films
deposited by radio frequency magnetron sputtering on non-garnet substrates were used in …

We propose and numerically investigate a kind of high-efficiency T-shaped optical circulator
in a two-dimensional square-lattice photonic crystal. In the T-shaped structure, the single …

Future 6G communication systems call for ultrawide bandwidth in the terahertz (THz)
frequency domain. Light signals propagating in photonic crystals–a functional optoelectronic …