Slow light in multi-line Brillouin gain spectrum.
Slow light in multi-line Brillouin gain spectrum.
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DOI：
10.1364/ipnra.2007.jtua6
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发表时间：
2007-02
期刊：
影响因子：
3.8
通讯作者：
Zhiwei Lu;Yongkang Dong;Qiang Li
中科院分区：
文献类型：
--
作者：
Zhiwei Lu;Yongkang Dong;Qiang Li
我们提出了一种通过多条增益线重叠来获得平顶增益谱的方法，可以用来增加慢光带宽和相对脉冲延迟。通过改变谱线的数目和相邻谱线之间的频率间隔可以实现可调的增益带宽。我们在基于SBS的慢光系统中演示了该方法。利用相位调制器对抽运光进行相位调制，产生多线谱抽运光，获得约330 MHz的布里渊增益带宽。
We present a method to achieve flat-top gain spectrum through overlapping multiple gain lines, which can be used to increase slow light bandwidth and relative pulse delay. A tunable gain bandwidth can be realized by changing the number of spectral lines and frequency separation between adjacent spectral lines. We demonstrate the method in a SBS-based slow light system. A phase modulator is used to modulate the phase of the pump wave, generating a pump wave with multi-line spectrum and achieving a Brillouin gain bandwidth of ~ 330 MHz.