Improved transmission of chirped signals from semiconductor optical devices by pulse reshaping using a fiber Bragg grating filter

Spectral filtering of chirped signals with an edge of a fiber grating filte r improves propagation in nondispersion-shifted fiber. The improvement is d ue to a temporal shift of the frequency modulation with respect to the ampl itude modulation. By filtering the chirped output of a semiconductor optica l amplifier (SOA) wavelength converter with a fiber grating edge me obtain error-free transmission of converted data through 100 km of nondispersion-s hifted fiber at 5 Gb/s.