Topological edge and corner states of valley photonic crystals with zipper-like boundary conditions
Sign Up to like & getrecommendations! Published in 2024 at "Chinese Physics B"
DOI: 10.1088/1674-1056/ad1e6a
Abstract: We present a stable valley photonic crystal (VPC) unit cell with C 3v symmetric quasi-ring-shaped dielectric columns and realize its topological phase transition by breaking mirror symmetry. Based on this unit cell structure, topological edge… read more here.
Keywords: photonic crystals; zipper like; valley photonic; topological edge ... See more keywords
Topological transmission and topological corner states combiner in all-dielectric honeycomb valley photonic crystals
Sign Up to like & getrecommendations! Published in 2025 at "Chinese Physics B"
DOI: 10.1088/1674-1056/ada9d9
Abstract: We study the topological states (TSs) of all-dielectric honeycomb valley photonic crystals (VPCs). Breaking the space inversion symmetry of the honeycomb lattice by varying the filling ratio of materials for circular ring dielectric columns in… read more here.
Keywords: photonic crystals; topological corner; honeycomb; honeycomb valley ... See more keywords
Tunable working bandwidth terahertz switch based on magnetic valley photonic crystal
Sign Up to like & getrecommendations! Published in 2025 at "Chinese Physics B"
DOI: 10.1088/1674-1056/adbb5b
Abstract: Terahertz (THz) switches are essential components of THz communication systems. THz switches based on conventional waveguides and photonic crystal structures are sensitive to manufacturing defects and sharp bending, resulting in high scattering losses. In addition,… read more here.
Keywords: thz switches; tunable working; valley photonic; photonic crystal ... See more keywords
Tunable Electromagnetic Flow Control in Valley Photonic Crystal Waveguides
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review Applied"
DOI: 10.1103/physrevapplied.10.044002
Abstract: 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, and perfect out-coupling refraction. In this work, we experimentally… read more here.
Keywords: tunable electromagnetic; photonic crystal; valley photonic; valley ... See more keywords
Experimental probe of band structures of bilayer valley photonic crystals
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review B"
DOI: 10.1103/physrevb.111.024203
Abstract: Research on two-dimensional van der Waals materials has demonstrated that the layer degree of freedom can significantly alter the physical properties of materials due to the substantial modification of bulk bands. Inspired by this concept,… read more here.
Keywords: photonic crystals; valley photonic; band; band structures ... See more keywords
Analysis of Unidirectional Coupling in Topological Valley Photonic Crystal Waveguides
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Lightwave Technology"
DOI: 10.1109/jlt.2020.3024696
Abstract: Valley photonic crystal is a typical strategy of topological photonics with promising applications for novel integrated waveguides. The valley pseudospin provides an intrinsic paradigm to implement unidirectional coupling with robustly optical transport. But the key… read more here.
Keywords: photonics; valley photonic; photonic crystal; unidirectional coupling ... See more keywords
Plasmon-induced transparency in a reconfigurable composite valley photonic crystal.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.447946
Abstract: We propose a new kind of reconfigurable topological valley photonic crystal (TVPC), and a novel topological waveguide can be formed by constructing a domain wall between two TVPCs with opposite valley-Chern indices. The topological waveguide… read more here.
Keywords: photonic crystal; valley; valley photonic; induced transparency ... See more keywords
Thermal tunable silicon valley photonic crystal ring resonators at the telecommunication wavelength.
Sign Up to like & getrecommendations! Published in 2023 at "Optics express"
DOI: 10.1364/oe.475559
Abstract: Tunable ring resonators are essential devices in integrated circuits. Compared to conventional ring resonators, valley photonic crystal (VPC) ring resonators have a compact design and high quality factor (Q-factor), attracting broad attention. However, tunable VPC… read more here.
Keywords: photonic crystal; telecommunication wavelength; valley photonic; ring resonators ... See more keywords
Optically reconfigurable higher-order valley photonic crystals based on enhanced Kerr effect.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.468157
Abstract: The reconfigurable higher-order topological states are realized in valley photonic crystals with enhanced optical Kerr nonlinearity. The inversion symmetry of the designed valley photonic crystal is broken due to the difference in optical responses between… read more here.
Keywords: kerr effect; higher order; valley photonic; photonic crystals ... See more keywords
Investigation of reconfigurable higher-order topological states in a valley photonic crystal.
Sign Up to like & getrecommendations! Published in 2025 at "Optics letters"
DOI: 10.1364/ol.558742
Abstract: We demonstrate reconfigurable higher-order corner states in a honeycomb lattice simply via tuning the eigenfrequencies of the lattice sites. The underlying physical mechanism is revealed from a tight-binding model including both nearest-neighbor (NN) and next-nearest-neighbor… read more here.
Keywords: higher order; valley photonic; photonic crystal; reconfigurable higher ... See more keywords
Thermally tunable add-drop filter based on valley photonic crystals for optical communications
Sign Up to like & getrecommendations! Published in 2024 at "Nanophotonics"
DOI: 10.1515/nanoph-2024-0437
Abstract: Abstract Valley photonic crystals (VPCs) provide an intriguing approach to suppress backscattering losses and enable robust transport of light against sharp bends, which could be utilized to realize low-loss and small-footprint devices for on-chip optical… read more here.
Keywords: photonic crystals; add drop; valley photonic; tunable add ... See more keywords