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\bibitem{He_etal2012} He, R., Sazio, P. J. A., Peacock, A. C., Healy, N., Sparks, J. R., Krishnamurthi, M., et al. (2012). Integration of gigahertz-bandwidth semiconductor devices inside microstructured optical fibres. \textit{Nat. Photon.}, \textit{6}(3), 174--179.

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