Presentation + Paper
4 March 2022 Optical rings as periodic systems
Kahtleen McGarvey, Pablo Bianucci
Author Affiliations +
Abstract
We introduce a formalism, inspired on the perturbation theory for nearly-free electrons in a solid-state crystal, to describe the resonances in optical ring resonators subjected to a perturbation in their dielectric profile. We find that, for small perturbations, degenerate resonant modes are split, with the splitting proportional to one specific coefficient of the Fourier expansion of the perturbation. We also find an expected asymmetry in the linewidths (and Q factors) of the split modes. Experimental transmission spectra from rings with specially designed perturbations show a qualitative match with the formalism predictions.
Conference Presentation
© (2022) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kahtleen McGarvey and Pablo Bianucci "Optical rings as periodic systems", Proc. SPIE 11987, Laser Resonators, Microresonators, and Beam Control XXIV, 119870H (4 March 2022); https://doi.org/10.1117/12.2606900
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KEYWORDS
Resonators

Waveguides

Dielectrics

Refractive index

Dispersion

Condensed matter

Spatial frequencies

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