From zero dispersion to group index matching: How tapering fibers offers the best of both worlds for visible supercontinuum generation

摘要

We provide an experimental study of the nonlinear optical effects which can be enhanced in order to produce visible supercontinua in photonic crystal fibers. We examine individual uniform fibers and discuss the physical origins of the resulting supercontinua. We then examine tapered supercontinuum fibers which exploit the advantages of our individual uniform fibers at different points along the length of the taper. We demonstrate reproducible control of taper shape.