Kerr nonlinear switching in a hybrid silicasilicon microspherical resonator

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  • F.H. Suhailin
  • N. Healy
  • Y. Franz
  • M. Sumetsky
  • J. Ballato
  • A.N. Dibbs
  • U.J. Gibson
  • A.C. Peacock

Research units


A hybrid silicon-core, silica-clad microspherical resonator has been fabricated from the semiconductor core fiber platform. Linear and nonlinear characterization of the resonator properties have shown it to exhibit advantageous properties associated with both materials, with the low loss cladding supporting high quality (Q) factor whispering gallery modes which can be tuned through the nonlinear response of the crystalline core. By exploiting the large wavelength shift associated with the Kerr nonlinearity, we have demonstrated all-optical modulation of a weak probe on the timescale of the femtosecond pump pulse. This novel geometry offers a route to ultra-low loss, high-Q silica-based resonators with enhanced functionality.

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Original languageEnglish
Pages (from-to)17263-17268
Number of pages6
JournalOptics Express
Issue number13
Publication statusPublished - 24 Jun 2015

Bibliographic note

Funding: EPSRC (EP/J004863/1), NORFAB (70201900/NL0133) and the Norwegian Discovery Fund (2011112). The data for this work is accessible through the University of Southampton Institutional Research Repository (DOI:10.5258/SOTON/377985).


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