Optimizing contact area geometry and taper composition in microknot resonators

Alexandra Blank*, Yoav Linzon

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We performed a comprehensive numerical study of the photonic transmission in manually prepared microknot resonators with different contact coupling area geometries and refractive index variations. A quantitative comparison between historical and state-of-The-Art quality-factor values achieved in microring, microloop, and microknot resonators is included. In selective modifications of the microknot coupling area shape and the refractive index profile, we have studied the microknot transmission characteristics. A recipe for the experimental realization of a 4-fold increase of values in microknot resonators is prescribed, where resonance parameters are beneficial for sensing applications, both in physical (temperature and refractive index) and in chemical (humidity and other gas components) characterizations.

Original languageEnglish
Article number233103
JournalJournal of Applied Physics
Issue number23
StatePublished - 21 Jun 2019


FundersFunder number
Israel Ministry of Science and Technology


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