Demonstration of ultra-flattened dispersion in photonic crystal fibers

We demonstrate photonic crystal fibers with ultra-flattened, near zero dispersion. Two micro-structured fibers showing dispersion of 0+/-0.6 ps/nm.km from 1.24 mum-1.44 mum wavelength and 0+/-1.2 ps/nm.km over 1 mum-1. 6 mum wavelength have been measured. (C) 2002 Optical Society of America.