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Updated: May 29, 2026

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
Highly efficient coupling of photons from nanoemitters into single-mode optical fibers
Masazumi Fujiwara1, Kiyota Toubaru, Tetsuya Noda
1Research Institute for Electronic Science, Hokkaido University , Sapporo, Hokkaido 001-0021, Japan.
Abstract:
Highly efficient coupling of photons from nanoemitters into single-mode optical fibers is demonstrated using tapered fibers. A percentage (7.4 ± 1.2%) of the total emitted photons from single CdSe/ZnS nanocrystals were coupled into a 300 nm diameter tapered fiber. The dependence of the coupling efficiency on the taper diameter was investigated and the coupling efficiency was found to increase exponentially with decreasing diameter. This method is very promising for nanoparticle sensing and single-photon sources.
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