Journal article

Fluorescent diamond microparticle doped glass fiber for magnetic field sensing

D Bai, MH Huynh, DA Simpson, P Reineck, SA Vahid, AD Greentree, S Foster, H Ebendorff-Heidepriem, BC Gibson

APL Materials | AMER INST PHYSICS | Published : 2020


Diamond containing the nitrogen-vacancy (NV) center is emerging as a significant sensing platform. However, most NV sensors require microscopes to collect the fluorescence signals and therefore are limited to laboratory settings. By embedding micron-scale diamond particles at an annular interface within the cross section of a silicate glass fiber, we demonstrate a robust fiber material capable of sensing magnetic fields. Luminescence spectroscopy and electron spin resonance characterization reveal that the optical properties of NV centers in the diamond microcrystals are well preserved throughout the fiber drawing process. The hybrid fiber presents a low propagation loss of ∼4.0 dB/m in the ..

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Awarded by Australian Research Council

Funding Acknowledgements

This work was funded by the Defence Science and Technology Group under the Next Generation Technologies Fund (NGTF) program. Takeshi Ohshima and colleagues from QST, Takasaki, Japan, are acknowledged for irradiating the diamond samples. D.B. acknowledges Dr. Stephen Warren-Smith and Dr. Erik Schartner from the University of Adelaide for the fiber loss measurements and characterizations and Dr. Asma Khalid from RMIT University for the SEM imaging. A.D.G. acknowledges the Australian Research Council for financial support (Grant No. FT160100357). P.R. acknowledges funding through the RMIT Vice-Chancellor's Research Fellowship. This work was performed, in part, at the OptoFab node of the Australian National Fabrication Facility utilizing the Commonwealth and SA State Government funding.