StockerYale Inc. has introduced two bulk fibers for OEMs and system integrators. The quartz polymer clad silica has a hard coat cladding, high tensile strength and is suitable for UV curing of adhesives and for crack detection using UV-activated dye penetrates. The company says that the fibers have a larger exit angle and a better bend radius to transmit light more efficiently. The glass fibers have a borosilicate cladding that can withstand temperatures up to 1100 ºF. The light produced by this fiber appears whiter because it extends into the UV range down to 400 nm.