Saddle-Shape Whispering Gallery Mode Microresonators

Eyal Yacoby, Yosef London

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Optical Whispering Gallery Mode (WGM) resonators are an ideal platform for highly sensitive sensors and nonlinear interactions. They exhibit extremely high quality (Q) factors, providing a sensing platform with low detection limit to environmental changes and optical confinement for low threshold nonlinear stimulation. Here we demonstrate a new type of WGM resonator we coin as a Saddle-Shape Microresonator (SSM). The unique modal properties of the SSM's WGMs significantly differs them from spheres, disks, toroids, and other well-known microresonator types. We show that the SSM offers, in addition to the many attractive attributes that are found in 'fiber-tip' sphere microresonators, the added characteristic of structural stability of a taper coupled resonator. The combination of these traits make it ideal for strain-based sensing, cavity quantum electrodynamics, and for real life applications in which mechanical tunability of the microresonator's WGMs is essential. The distinctive structure of SSMs - allowing exceptional high mechanical stability as well as mechanical tunability - opens a route to manufacture miniature packaged fiber-coupled WGM microresonators-based devices.

Original languageEnglish
Pages (from-to)3139-3144
Number of pages6
JournalJournal of Lightwave Technology
Issue number10
StatePublished - 15 May 2023
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 1983-2012 IEEE.


  • Q factor
  • Saddle shape
  • Silica microresonators
  • Whispering Gallery Modes


Dive into the research topics of 'Saddle-Shape Whispering Gallery Mode Microresonators'. Together they form a unique fingerprint.

Cite this