A High-Q and Small-Mode-Volume Cavity in Microfibers

Abstract

We propose a novel approach to confine light in a silica microfiber (MF) cavity using a lattice-constant-varying nanohole array. The MF cavity integrated with an optimally designed nanohole array produces Q-factors ~ 7×10^5 in the near infrared region while its mode volume remains ~ (λ_e)^3. Our MF cavity of enhanced performance will find potential applications in fiber lasers, nonlinear fiber optics, cavity quantum electrodynamics (QED), and cavity optomechanics.

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