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中文摘要：
超短光脉冲源是光时分复用（OTDM）系统中的关键器件．提出了一种基于单端半导体光放大器（SOA）的注入型主动锁模光纤激光器产生超短光脉冲的方案，建立了该方案的理论模型．实验实现了高消光比稳定的重复频率10-40GHz皮秒级光脉冲的输出，输出波长在30nm范围内连续可调．
英文摘要：
Uhra-short optical pulse source is one of key components in optical time-division multiplexing（OTDM） system. In this paper, a wavelength and repetition rato tunable actively mode-locked fiber ring laser based on cross-gain modulation in a reflective Semiconductor Optical Amplifier（SOA） is demonstrated. Theoretical model for this scheme is also established and output characteristics are calculated. Stable picosecond pulse trains with high extinction ratio at 10-40 GHz repetition rato are obtained. 30nm wavelength tuning range is also achieved in our proposed actively mode-locked laser.
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