Solar fiber-optic mini-dish concentrators: first experimental results and field experience Academic Article uri icon

abstract

  • Abstract The experimental realization and field experience of a recently proposed solar fiber-optic mini-dish concentrator are reported. The prototype is 200 mm in diameter. We have repeatably transported concentrated sunlight in a one-millimeter-diameter optical fiber and measured flux levels of 11–12 kilo suns at a remote target (up to 20 m away). The prototype—assembled from off-the-shelf parts and customized 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 fiber tips were sculpted to boost flux concentration by a factor of 2 to 4, for light extraction into air and tissue, respectively. Our findings strengthen the feasibility of the efficient and complete de-coupling of the collection and remote delivery of highly concentrated solar radiation.

publication date

  • January 1, 2002