Coupling of ultrathin tapered fibers with high-Q microsphere resonators at cryogenic temperatures and observation of phase-shift transition from undercoupling to overcoupling.

Abstract

We cooled ultrathin tapered fibers to cryogenic temperatures and controllably coupled them with high-Q microsphere resonators at a wavelength close to the optical transition of diamond nitrogen vacancy centers. The 310-nm-diameter tapered fibers were stably nanopositioned close to the microspheres with a positioning stability of approximately 10 nm over a… (More)
DOI: 10.1364/OE.20.019545

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@article{Fujiwara2012CouplingOU, title={Coupling of ultrathin tapered fibers with high-Q microsphere resonators at cryogenic temperatures and observation of phase-shift transition from undercoupling to overcoupling.}, author={Masazumi Fujiwara and Tetsuya Noda and Akira Tanaka and Kiyota Toubaru and Hong-Quan Zhao and Shigeki Takeuchi}, journal={Optics express}, year={2012}, volume={20 17}, pages={19545-53} }