Strong Coupling between On Chip Notched Ring Resonator and Nanoparticle

Details Strong Coupling between On Chip Notched Ring Resonator and Nanoparticle Strong Coupling between On Chip Notched Ring Resonator and Nanoparticle

2010-08-02

arxiv.org/abs/1008.0282v1

Applied Physics Letters, 2010

Physics

Optics

Accepted,

Scientific paper

We have demonstrated a new photonic structure to achieve strong optical coupling between nanoparticle and photonic molecule by utilizing a notched micro ring resonators. By creating a notch in the ring resonator and putting a nanoparticle inside the notch, large spectral shifts and splittings at nm scale can be achieved, compared to only pm scale observed by fiber tip evanescently coupled to the surface of microsphere, thereby significantly lowered the quality factor requirement for single nanoparticle detection. The ability for sorting the type of nanoparticles due to very different mode shift and splitting behavior of dielectric and metallic nanoparticles is also emphasized.

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