Nanodiamond in tellurite glass Part II: practical nanodiamond-doped fibers

TL;DR

This paper demonstrates the fabrication of nanodiamond-doped tellurite fibers with significantly reduced optical loss in the visible spectrum, advancing their potential for quantum photonics applications.

Contribution

It presents a method to produce nanodiamond-doped tellurite fibers with over tenfold reduction in optical loss by optimizing glass fabrication conditions.

Findings

Loss reduced to 10 dB/m at 600-800 nm

Nanodiamond concentration up to 0.7 ppm-weight

Understanding of fabrication impact on nanodiamond interaction

Abstract

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.