Dispersion compensating chirped fibre gratings

The dispersion characteristics of linearly chirped fibre gratings have been studied in detail and design criteria established. It is shown that in order to compensate the linear dispersion of 100km of standard fibre, over a certain FWM bandwidth, the required fibre-grating length is 17.7cm/nm. Dispersion Compensation measurements for both a 200km, 2.5Gbit/s direct-modulated transmitter and a 216km, 10Gbit/s externally-modulated transmitter experiment confirm these predictions