A system and method for relaying race information related to a plurality of races, such as horse or greyhound races, typically held at racetracks. 5 wt % of Al2O3, with a radius R1 from about 3 \u03bcm to about 15 \u03bcm, a relative refractive index delta \u03941 from about between 0. The components of the circuit design then can be placed to minimize critical connections. The internal tube is surrounded by an external tube, which together with the internal tube defines an annular chamber that has at least one compressed air connection.