Coupling between waveguides and microresonators: The local approach

Dashiell L.P. Vitullo*, Sajid Zaki, D. E. Jones, M. Sumetsky, Michael Brodsky

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Coupling between optical microresonators and waveguides is a critical characteristic of resonant photonic devices that has complex behavior that is not well understood. When the characteristic variation length of the microresonator modes is much larger than the waveguide width, local coupling parameters emerge that are independent of the resonator mode distributions and offer a simplified description of coupling behavior. We develop a robust numerical-fitting-based methodology for experimental determination of the local coupling parameters in all coupling regimes and demonstrate their characterization along a microfiber waveguide coupled to an elongated bottle microresonator.

Original languageEnglish
Pages (from-to)25908-25914
Number of pages7
JournalOptics Express
Issue number18
Publication statusPublished - 18 Aug 2020

Bibliographical note

Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

Funding: Army Research Laboratory (W911NF-19-2-0103); Engineering and Physical Sciences Research Council (EP/P006183/1)


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