2020/10/21 by Lei Du, Zhihai Wang, Yong Li
Computer Science · Physics and Astronomy · #Coupled mode theory #Coupling (piping) #Interference (communication) #Laser linewidth #Line (geometry) #Mechanical and Optical Resonators #Quantum Information and Cryptography #Quantum optics and atomic interactions #Resonator #Sensitivity (control systems) #Waveguide #physics.optics #quant-ph
paper · pdf · doi:10.1364/oe.412996
10 pages, 6 figures
arxiv created 2020/10/21 · openalex created_date 2020/10/22 · openalex publication_date 2021/01/05 · arxiv updated 2021/02/24 · openalex updated_date 2026/08/05
We study the self interference effect of a resonator coupled with a bent waveguide at two separated ports. Such interference effects are shown to be similar for the cases of standing-wave and traveling-wave resonators, while in the system of two separated resonators indirectly coupled via a waveguide, the coupling forms and the related interference effects depend on which kind of resonators is chosen. Due to the self interference, controllable optical responses including tunable linewidth and frequency shift, and optical dark state can be achieved. Moreover, we consider a self-interference photon-magnon hybrid model and show phase-dependent Fano-like line shapes which have potential applications in frequency sensing. The photon-magnon hybridization can not only enhance the sensitivity and provide tunable working region, but also enables optical readout of the magnetic field strength in turn. The results in this paper provide a deeper insight into the self interference effect and its potential applications.