2020/01/02 by Shahram Moradi, Mahdi Zavvari, Yashar Zehforoosh +2 · 1 citation
Agricultural and Biological Sciences · Engineering · Physics and Astronomy · #Acoustics #Band diagram #Broadband #Computer science #Condensed matter physics #Electronic band structure #Envelope (radar) #Fern and Epiphyte Biology #Group velocity #Hexagonal lattice #Lattice (music) #Materials science #Optics #Phase (matter) #Phase diagram #Phase velocity #Photonic Crystals and Applications #Photonic and Optical Devices #Photonic crystal #Photonics #Physics #Planar #Quantum mechanics #Refractive index #Slow light #Telecommunications #physics.optics
paper · pdf · doi:10.1016/j.photonics.2021.100985
published in Photonics and Nanostructures - Fundamentals and Applications 48, 100985 (Elsevier BV) · 14 pages, 6 figures
arxiv created 2020/01/02 · openalex publication_date 2021/12/10 · arxiv updated 2021/12/21 · openalex created_date 2021/12/31 · openalex updated_date 2026/08/05
In this paper, we propose an asymmetric distribution of a hexagonal lattice for achieving near-zero group velocity with negative group delay. This study reports the effect of the continuous geometric perturbation on the photonic band diagram and consequently its impact on phase velocity, group velocity, and effective refractive index. We provide a promising method for modifying the photonic band diagram for obtaining an exotic dispersion diagram. With this obtaining a broadband spanning from E to L band that envelop of light pulse traverse with almost zero velocity is promising enough to apply it in a wide variety of light-based devices.