Abstract

Recent progress of the optical amplifier has eliminated the loss limitation in the optical transmission system. Therefore, the maximum transmission length was mainly limited by the waveform deterioration due to the chirping in the modulated light. The Mach-Zehnder type(MZ) modulator has been proposed as one of the most promising external modulators, since it achieves zero or negative chirping which maximizes the transmission distance[1]. Recently, high speed and low driving voltage MQW MZ modulators had been reported[2,3,4].

© 1995 Optical Society of America