Abstract
Transform-limited (TL) pulses are indispensable for optical- soliton transmission. From a practical point of view, singlechirp laser-diode (LD) pulse sources, such as gain-switched distributed-feedback LDs (DFB-LDs) (GS pulse sources1) and sinusoidally driven monolithically integrated MQW-DFB-LD/MQW-EA modulators (EA pulse sources-) are promising because of their stability, widely tunable repetition rates, and TL characteristics. However, the TL characteristics discussed so far are not a sufficient criterion for soliton sources because the carrier linewidth, which is spread because of relatively large carrier phase noise of a DFB-LD, causes the accumulation of timing jitter in optical-soliton transmission. The accumulated timingjitter, resulting in a limit on the bit-rate-distance product predicted in Ref. 3, has not been fully analyzed and confirmed experimentally.
© 1994 Optical Society of America
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