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Opt Express. 2011 Jul 18;19(15):14040-50. doi: 10.1364/OE.19.014040.

Cavity formation on an optical nanofiber using focused ion beam milling technique.

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1
Center for Photonic Innovations, University of Electro-Communications, Tokyo, Japan.

Abstract

We present the experimental realization of nanofiber Bragg grating (NFBG) by drilling periodic nano-grooves on a subwavelength-diameter silica fiber using focused ion beam milling technique. Using such NFBG structures we have realized nanofiber cavity systems. The typical finesse of such nanofiber cavity is F ∼ 20 - 120 and the on-resonance transmission is ∼ 30 - 80%. Moreover the structural symmetry of such NFBGs results in polarization-selective modes in the nanofiber cavity. Due to the strong confinement of the field in the guided mode, such a nanofiber cavity can become a promising workbench for cavity QED.

PMID:
21934765
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