Demonstration of negative chirp characteristics over wide wavelength range using monolithically integrated SG-DBR laser/electroabsorption modulator

For the first time negative large signal chirp characteristics from a widely-tunable laser/electroabsorption modulator transmitter are reported. This device employed an intermixed quantum well absorption region in the modulator. Large signal time resolved chirp measurements were made at wavelengths from 1542 to 1569 nm and were shown to exhibit negative characteristics at all wavelengths.