Reducing group-velocity-dispersion-dependent broadening of stimulated Brillouin scattering slow light in an optical fiber by use of a single pump laser

Reducing group-velocity-dispersion-dependent broadening of stimulated Brillouin scattering slow light in an optical fiber by use of a single pump laser
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使用单泵浦激光器减少光纤中受激布里渊散射慢光的群速度色散相关展宽

DOI:
10.1364/josab.25.000741
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发表时间:
2008-05
期刊:
J Opt. Soc. Am. B
影响因子:
--
通讯作者:
Ren, Li-Yong
Ren, Li-Yong
中科院分区:
其他
文献类型:
--
作者:
Tomita, Yasuo;Ren, Li-Yong

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提出了一种在单模光纤中有效扩展受激布里渊散射(SBS)增益带宽的方法,以减小SBS慢光的群速度色散(GVD)相关脉冲扩展。这可以通过重叠从单个泵浦激光器合成的双峰SBS增益谱来完成。数值计算进行验证我们提出的方法。我们发现,相对于抽运激光的固有谱宽,双态受激布里渊散射增益谱的两个中心频率之间存在着最佳的谱间距,这使得有效地减小GVD引起的信号脉冲展宽成为可能。我们表明,放大的信号脉冲的最大时间延迟可以比以前报道的方法,使用一个单一的宽带泵浦激光器的两倍长。
We propose a method of effectively extending the stimulated Brillouin scattering (SBS) gain bandwidth in a single-mode optical fiber to reduce group-velocity-dispersion (GVD)-dependent pulse spread of SBS slow light. This can be done by overlapping doublet SBS gain spectra synthesized from a single pump laser. Numerical calculations are performed to verify our proposed method. We find that there exists the optimum spectral separation between two center frequencies of the doublet SBS gain spectrum with respect to the inherent spectral width of the pump laser, which makes it possible to effectively reduce the signal pulse broadening due to GVD. We show that the maximum time delay of the amplified signal pulse can be approximately two times longer than that by a previously reported method using a single broadband pump laser.
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