Using sampled nonlinearly chirped fiber Bragg gratings to achieve 40-Gbit/s tunable multi-channel dispersion compensation

摘要

We demonstrate tunable chromatic dispersion in a 4×40-Gbit/s wavelength-division-multiplexed (WDM) transmission experiments using single sampled nonlinearly chirped fiber Bragg grating (NC-FBG) with negligible errors from higher order dispersion or two cascaded inverse sampled NC-FBG to cancel the higher order dispersion within the data's bandwidth. In both the single FBG and cascaded FBG configurations, <3 dB penalty is achieved for all four WDM channels even though the eye is completely closed without compensation.