基于Tellurite光纤的受激布里渊散射慢光数值模拟

Numerical simulation of SBS slow light in Tellurite optical fiber

利用受激布里渊散射对Tellurite光纤实现慢光进行数值研究.通过数值模拟得到在小信号以及增益饱和情况下,斯托克斯脉冲的时间延迟和脉冲展宽随增益的变化关系;同时模拟了在固定的增益参数下,时间延迟及脉冲展宽随斯托克斯峰值功率的变化关系.结果表明由于Tellurite光纤具有较高的增益系数,可以有效减少增益饱和对斯托克斯脉冲的时间延迟的限制并且具有较大的延迟时间,同时表明较高的斯托克斯峰值功率也是造成增益饱和的重要原因.

Slow light in Tellurite fiber stimulated with Brillouin scattering was numerically simulated.The variation of time delay and pulse broadening of Stokes pulse with the gain was obtained by using numeric simulation in the case of small-signal and gain saturation.The variation of time delay and pulse broadening with Stokes power was also made in the case of fixed gain parameter.The result showed that Tellurite fiber could effectively reduce the restriction of gain saturation on time delay and a larger time delay could be obtained due to the larger gain coefficient.It was also shown that the larger Stokes peak power was the main reason that led to the gain saturation.