Semiconductor mode-locked lasers as pulse sources for high bit rate data transmission

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Abstract

Semiconductor mode-locked lasers are evaluated as pulse sources for high bit rate data transmission. This chapter describes the requirements of OTDM sources for high bit rate data transmission, compares various OTDM source technologies, describes three semiconductor mode-locked laser cavity designs, explains the impact of timing jitter and amplitude noise on OTDM performance, illustrates how to characterize noise of OTDM sources using rf and optical techniques, shows how to interpret the noise measurements, and finally discusses semiconductor mode-locked laser cavity optimizations that can achieve low noise performance.