A mixed-field formulation for modeling dielectric ring resonators and its application in optical frequency comb generation.

ABSTRACT: We present a novel finite-difference frequency-domain formulation for accurate and efficient modal analysis of dielectric ring resonators, a critical component in microresonator-based optical frequency comb (OFC) generation. Unlike previous methods, our approach solves for both electric and magnetic fields simultaneously in cylindrical coordinates, eliminating spurious modes and ensuring high fidelity at material boundaries. The solver enables rapid computation of resonant modes without requiring manual input for azimuthal mode numbers, significantly streamlining dispersion engineering for OFC design. We validate our method against experimental data and the results generated with commercial solvers, demonstrating excellent agreement in effective indices, integrated dispersion, and resonanc

SUBMITTER: Simsek E 

PROVIDER: S-EPMC12508476 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature