Author Affiliations
1School of Physics and Optoelectronics, South China University of Technology, Guangzhou, Guangdong 510641, China2Guangdong Full-Spectra Laser Technology Co., Ltd., Dongguan, Guangdong 523808, Chinashow less
Fig. 1. Topological photonic state in ordered lattice. (a) Square lattice MOPC and metal plate
[15]; (b) square lattice MOPC and triangular lattice aluminum PC with bandgap
[16]; (c) hexagonal lattice MOPC
[17,69]; (d) triangular lattice MOPC plate
[70] Fig. 2. Topological photonic state in disordered lattice. (a) MOPC with disordered position and cell size
[57]; (b) single-row disordered magneto-optical column
[71]; (c) MOPC with disordered superlattice
[72]; (d) circular and triangular disordered MOPCs
[73]; (e) crystal, glass-like, and liquid-like MOPC
[74] Fig. 3. Construction of microscopic physical figure
[75]. (a) Microscopic physical figures of topological current and topological photonic state; (b) infinite uniform MO medium; (c) semi-infinite air-MO medium; (d)(e) single MO column; (f) microscopic physical figure of TPS in semi-infinite air-MO medium interface; (g) TPS in hexagonal lattice MOPC; (h) TPS in square lattice MOPC
Fig. 4. MOPC with the breaking of time- and space-inversion symmetries. (a) Changing cell dielectric constant
[76]; (b) changing cell size
[27]; (c) changing rotation angle of dielectric structure
[78] Fig. 5. Antichiral topological photonic state. (a) Schematic diagram of antichiral TPS
[79]; (b) projected band structure
[79]; (c) eigenmodal field
[79]; (d) schematic diagram of unit cell
[80]; (e) verification of robustness
[79]; (f) compact three-channel one-way waveguide
[79]; (g)-(i) experimental demonstration
[80] Fig. 6. Broadband topological photonic state and topological slow-light state. (a) Broadband TPS
[81]; (b) topological slow-light state with low group velocity
[51]; (c) group dispersionless slow-light state
[53]; (d) broadband tunable slow-light trapping rainbow
[54]; (e) broadband group dispersionless topological slow-light state
[55] Fig. 7. Topological photonic cavity. (a) One-way channel-drop filter with point cavity mode
[84]; (b) one-way channel-drop filter with ring cavity
[85]; (c) ring cavity array
[86]; (d) dislocation topology cavity
[87] Fig. 8. Multimode topological photonic state and topological photonic circuit
[6] Fig. 9. Topological laser
[45]. (a) Schematic diagram of topological laser and unit cell; (b) experimental demonstration
Fig. 10. Topological fiber
[88]. (a) Regular fiber and topological fiber; (b) three-dimensional magneto-optical Weyl photonic crystal