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13 papers · 1 filter
Topological metasurface: From passive toward active and beyond
Jian Wei You, Zhihao Lan, Qian Ma +5
Metasurfaces are subwavelength structured thin films consisting of arrays of units that allow the controls of polarization, phase and amplitude of light over a subwavelength thickn…
Large-area quantum-spin-Hall waveguide states in a three-layer topological photonic crystal heterostructure
Zhihao Lan, Menglin L. N. Chen, Jian Wei You +1
Topological photonic edge states are conventionally formed at the interface between two domains of topologically trivial and nontrivial photonic crystals. Recent works exploiting p…
Topological valley transport under long-range deformations
Zhixia Xu, Xianghong Kong, Robert J. Davis +4
Edge states protected by bulk topology of photonic crystals show robustness against short-range disorder, making robust information transfer possible. Here, topological photonic cr…
Tunable light flow control in valley photonic crystal waveguide
Xiao-Dong Chen, Fu-Long Shi, Huan Liu +5
The exploration of binary valley degree of freedom in topological photonic systems has inspired many intriguing optical phenomena such as photonic Hall effect, robust delay lines,…
Leaky-Wave Radiations by Modulating Surface Impedance on Subwavelength Corrugated Metal Structures
Ben Geng Cai, Yun Bo Li, Hui Feng Ma +3
One-dimensional (1D) subwavelength corrugated metal structures has been described to support spoof surface plasmon polaritons (SPPs). Here we demonstrate that a modulated 1D subwav…
Far-field subwavelength imaging from a single broadband antenna in combined with strongly disordered medium
Lianlin Li, Fang Li, Tie Jun Cui
The far-field subwavlength imaging is a challenging issue. In this letter we demonstrate numerically that the far-field subwavelength imaging of weakly scattering objects can be ob…