Coupled cavity-waveguide system based on topological corner state and edge state

Abstract

Topological corner state (TCS) and topological edge state (TES) have provided new approaches to control the propagation of light. The construction of topological coupled cavity-waveguide system (TCCWS) based on TCS and TES is worth looking forward to, due to its research prospects in realizing high-performance micro-nano integrated photonic devices. In this Letter, TCCWS is proposed in two-dimensional (2D) photonic crystal (PC), which possesses strong optical localization, high quality factor and excellent robustness compared with the conventional coupled cavity-waveguide system (CCCWS). This work will provide the possibility to design high-performance logic gates, lasers, filters and other micro-nano integrated photonics devices and expand their applications.

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• Controlling Anderson localization in disordered photonic crystal waveguides
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• Frequency tunable topological edge states of two-dimensional honeycomb lattice photonic crystals
• Edge states in self-complementary checkerboard photonic crystals: Zak phase, surface impedance and experimental verification
• Two-dimensional phase-space picture of the photonic crystal Fano laser

Cited by in corpus (5)

• A brief review of topological photonics in one, two, and three dimensions
• Observation of Topological Corner State Arrays in Photonic Quasicrystals
• Optimization and robustness of topological corner state in second-order topological photonic crystal
• Topological light guiding and trapping via shifted photonic crystal interfaces
• Polarization-independent second-order photonic topological corner states