Broadband fibre Bragg gratings for pure third-order dispersion compensation

Abstract

Single fibre Bragg gratings designed to compensate pure 3rd-order dispersion are demonstrated for the first time. The shown devices exhibits dispersion-profiles of -20ps/nm/sup 2/, -40ps/nm/sup 2/ and -225ps/nm/sup 2/ over bandwidths of 4.5nm, 6nm and 3nm respectively, they have peak reflectivities of /spl sim/75% and are only 8mm, 23mm and 40mm long.