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Factors affecting wavelength chirping in directly modulated semiconductor lasers

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Abstract

Recent lightwave system work has underscored the importance of wavelength chirping in high-speed (>1-Gbit/sec) long-haul applications at the 1.5-μm fiber loss minimum. Theoretical discussions of chirp, or equivalently FM, usually focus on its relationship to drive current. A more direct and relevant measure is the relationship of chirp to the time-dependent optical power waveform since this is what must be specified in most lightwave applications.

© 1985 Optical Society of America

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