研究了基于半导体光放大器（SOA）的光纤环形激光器的偏振混沌光的特性及其相干性。
The characteristic of polarization chaos laser and coherence of semiconductor optical amplifier(SOA)-based fiber ring laser are investigated.
从理论上分析了利用光纤环形镜（FLM）中的偏振耦合效应作为滤波器，对掺铒光纤放大器（EDFA）实现增益平坦化的方法。
The method of erbium-doped fiber amplifier(EDFA) gain flattening using a fiber loop mirror(FLM) acting as a wavelength filter was analyzed in theory.
光纤环形腔中光放大器、滤波器的加入，以及光脉冲直流基座的降低，可以明显改善输出的幅值和复制序列长度。
The output amplitude and the length of pulses train are greatly improved with additional semiconductor optical amplifier and filter in the optical fiber loop as the DC component of input keeps low.
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