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Phase conjugation of optical pulses in fibers and in semiconductor laser amplifiers

机译:光脉冲在纤维和半导体激光放大器中的相位缀合

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Temporal effects of the optical phase conjugation in dispersion-shifted fibers and in semiconductor laser amplifiers are numerically shown. In dispersion-shifted fibers, the frequency chirping is induced in the conjugate pulse by the signal pulse and pump wave through the cross-phase modulation, which increases with the signal power. In semiconductor laser amplifiers, the conjugate pulse has distortion and frequency chirping due to the amplified spontaneous emission noise and the carrier depletion induced by the signal pulse. These effects can be reduced by increasing the pump power. By properly choosing the signal power and pump power, for both conjugators, the optical phase conjugations can be nearly ideal. Finally, the performances of the two conjugators are compared.
机译:在分散偏移纤维中和半导体激光放大器中的光学相位缀合的时间效应在数上示出。在色散移位的纤维中,通过信号脉冲和泵波通过交叉相位调制在缀合物脉冲中诱导频率啁啾,这与信号功率增加。在半导体激光放大器中,缀合物脉冲由于由信号脉冲引起的扩增的自发发射噪声和载波耗尽而具有失真和频率啁啾。通过增加泵功率可以降低这些效果。通过适当地选择信号功率和泵功率,对于两个缀合器,光学相位缀合可能几乎是理想的。最后,比较了两个缀合物的性能。

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