Group velocity manipulation in active fibers using mutually modulated cross-gain modulation: from ultraslow to superluminal propagation.
Group velocity manipulation in active fibers using mutually modulated cross-gain modulation: from ultraslow to superluminal propagation.
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DOI：
10.1364/ol.36.002185
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发表时间：
2011-06
期刊：
影响因子：
3.6
通讯作者：
Kai Qian;Li Zhan;Liang Zhang;Z. Zhu;Junsong Peng;Z. Gu;Xiao Hu;S. Luo;Yuxing Xia
中科院分区：
文献类型：
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作者：
Kai Qian;Li Zhan;Liang Zhang;Z. Zhu;Junsong Peng;Z. Gu;Xiao Hu;S. Luo;Yuxing Xia
我们提出并实验证明了使用互调交叉增益调制的慢/快光在掺铒光纤（EDF）中的传播。光信号的群速度可以通过增益交叉饱和调制的效应来控制，这种调制是由任意波长的饱和光在增益带宽内进行的。在不同的调制相位下，观察到小群速度为5.6 × 10⁻³c （c为自由空间中的光速）的超光速传播和负群速度为-1.1 × 10⁻³c的超光速传播。
We propose and experimentally demonstrate the propagation of slow/fast light in an erbium-doped fiber (EDF) using mutually modulated cross-gain modulation. The group velocity of the light signal can be manipulated by the effect of gain cross-saturation modulation by a saturating light at an arbitrary wavelength in the gain bandwidth of the EDF. The ultraslow propagation with a small group velocity of 5.6 × 10⁻³c (c is the light speed in free space) and superluminal propagation with a negative group velocity of -1.1 × 10⁻³c has been observed under different modulation phases.