Kerr nonlinear switching in a hybrid silica-silicon microspherical resonator
Suhailin, Fariza; Healy, N; Franz, Y; Sumetsky, Misha; Ballato, John; Dibbs, Andrew; Gibson, Ursula; Peacock, Anna
Journal article, Peer reviewed
Published version
Permanent lenke
http://hdl.handle.net/11250/2581508Utgivelsesdato
2015Metadata
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- Institutt for fysikk [2708]
- Publikasjoner fra CRIStin - NTNU [38672]
Sammendrag
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.