Finite element modeling of coupled optical microdisk resonators for displacement sensing

Abstract

We analyze normal mode splitting in a pair of vertically coupled microdisk resonators. A full vectorial finite element model is used to find the eigen frequencies of the symmetric and antisymmetric composite modes as a function of coupling distance. We find that the coupled microdisks can compete with the best Fabry-Perot resonators in displacement sensing. We also show how we configured FreeFem++ for the sphere eigenvalue problem.

10 pages, 4 figures, 1 FreeFem++ script (download and unzip the paper source)

References in corpus (2)

• Cavity Optomechanics
• Frequency comb from a microresonator with engineered spectrum

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