2017/03/08 by Sergey V. Suchkov, Mikhail Sumetsky, Andrey A. Sukhorukov · 40 citations
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #Free spectral range #Frequency comb #Interferometry #Mechanical and Optical Resonators #Nanoscopic scale #Nonlinear optics #Photonic and Optical Devices #Photonics #RADIUS #Resonator #Soliton #Whispering-gallery wave #physics.optics
paper · pdf · doi:10.1364/ol.42.002149
published in Optics Letters 42(11), 2149 (Optica Publishing Group)
arxiv created 2017/03/08 · openalex created_date 2017/04/07 · openalex publication_date 2017/05/26 · arxiv updated 2018/04/12 · openalex updated_date 2026/08/05
We develop a theory of optical frequency comb generation in ultra-compact surface nanoscale axial photonic (SNAP) bottle microresonators, employing the nonlinear interaction of whispering gallery modes which are confined along an optical fiber with nanoscale radius variation. We predict that a SNAP microresonator with a radius of a few micrometers can generate a frequency comb with an ultra-fine sub-gigahertz spectral spacing, which would require traditional ring resonators of centimeter radius. We identify regimes of stable or quasi-periodic comb dynamics due to soliton excitation, and show that special engineering of the SNAP radius profile can be used to compensate for nonlinearity-induced dispersion.