2014/07/18 by Mher Ghulinyan, Fernando Ramiro‐Manzano, Fernando Ramiro Manzano +7
Engineering · Physics and Astronomy · #Coupled mode theory #Coupling (piping) #Diagonal #Engineering #Fano plane #Fano resonance #Finite element method #Geometry #Materials science #Mechanical and Optical Resonators #Observable #Optics #Photonic Crystals and Applications #Photonic and Optical Devices #Physics #Plasmon #Quantum mechanics #Refractive index #Resonator #Telecommunications #Transmission (telecommunications) #Waveguide #physics.optics
paper · pdf · doi:10.1103/physreva.90.053811
published as Phys. Rev. A 90, 053811 (2014) · 5 pages, 5 figures
arxiv created 2014/07/18 · openalex publication_date 2014/11/05 · arxiv updated 2014/11/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We report on a joint theoretical and experimental study of an integrated photonic device consisting of a single-mode waveguide vertically coupled to a disk-shaped microresonator. Starting from the general theory of open systems, we show how the presence of a neighboring waveguide induces a reactive intermode coupling in the resonator, analogous to an off-diagonal Lamb shift in atomic physics. Observable consequences of this coupling manifest as peculiar Fano line shapes in the waveguide transmission spectra. The theoretical predictions are validated by full vectorial three-dimensional finite-element numerical simulations and are confirmed by the experiments.