The experimental realisation and field experience of a recently proposed solar fiber-optic mini-dish concentrator are reported. The prototype is 20mm in diameter. We have repeatably transposed concentrated sunlight in a one-millimeter diameter optical fiber and measured flux levels of 11-12 kilosuns at a remote target (up to 20m away). The prototype - assembled from off-the-shelf parts and customised items that rely solely upon existing commercial technologies - proved impervious to dust penetration and condensation. For the particular application of solar surgery, dielectric second stage concentrators were designed and fibre tips were sculpted to boost flux concentration by a factor of 2-4, for light extraction into air and tissue, respectively. The findings strengthen the feasibility of the efficient and complete de-coupling of the collection and remote delivery of highly concentrated solar radiation.
