Abstract

Recently, the study of the generation of short pulses at high repetitive rates and all-optical signal processing exploring the nonlinear effects of the fiber and semiconductor has obtained widely interests.¹⁻⁵ In this paper, a novel actively modelocking ring laser which is based on the 1.55 μm-SOA as a gain medium and 1.31 μm-SOA as a novel and simple purely phase modulator is proposed and preliminarily discussed. The total cavity length of the ring laser can be considerably shortened to minimize the impact of an environmental perturbation and the gain fluctuations can be also removed. What’s more, the new scheme is operated in all-optical domain that can be hoped to produce ultra-short optical pulses at high repetitive rates and to extract the all-optical clock signals if it is driven by optical data signals as well.

© 2002 Optical Society of America