  Tellurite glass fibers with embedded nanodiamond are attractive materials for
quantum photonics applications. Reducing the loss of these fibers in the
600-800 nm wavelength range of nanodiamond fluorescence is essential to exploit
the unique properties of nanodiamond in the new hybrid material. The first part
of this study reported the origin of loss in nanodiamond-doped glass and impact
of glass fabrication conditions. Here, we report the fabrication of
nanodiamond-doped tellurite fibers with significantly reduced loss in the
visible through further understanding of the impact of glass fabrication
conditions on the interaction of the glass melt with the embedded nanodiamond.
We fabricated tellurite fibers containing nanodiamond in concentrations up to
0.7 ppm-weight, while reducing the loss by more than an order of magnitude down
to 10 dB/m at 600-800 nm.
