Vector analysis of stimulated Brillouin scattering amplification in standard single-mode fibers.
Vector analysis of stimulated Brillouin scattering amplification in standard single-mode fibers.
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DOI：
10.1364/oe.16.021692
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发表时间：
2008-12
期刊：
影响因子：
3.8
通讯作者：
A. Zadok;E. Zilka;A. Eyal;L. Thévenaz;M. Tur
中科院分区：
文献类型：
--
作者：
A. Zadok;E. Zilka;A. Eyal;L. Thévenaz;M. Tur
通过矢量分析、模拟和实验研究了标准单模光纤中受激布里渊散射（SBS）放大或衰减的偏振特性。矢量传播方程的信号波，纳入SBS和双折射，推导和分析在琼斯和斯托克斯空间。分析表明，在非耗尽泵浦状态下，光纤可以被视为偏振相关增益（或损耗）介质，对于信号具有两个正交输入SOP和相应的两个正交输出SOP，这两个SOP分别为信号提供最大和最小SBS放大（或衰减）。在高布里渊增益条件下，排除零概率情况，任意偏振输入信号的输出SOP将趋向于向最大SBS增益的输出SOP收敛。在高SBS衰减的情况下，任意偏振信号的输出SOP将接近对应于最小衰减的输出SOP。结果表明，对于宽范围的实际泵浦功率（≤ 100 mW）和具有典型SBS和双折射参数的足够长的光纤，为最大SBS相互作用而对准的信号将进入/从光纤中出来，其电场在空间上与光纤相应侧的泵浦电场紧密地跟踪相同的椭圆，尽管旋转方向相反。实验证明了斯托克斯（放大）和反斯托克斯（衰减）信号的分析预测。
The polarization properties of stimulated Brillouin scattering (SBS) amplification or attenuation in standard single-mode fibers are examined through vectorial analysis, simulation and experiment. Vector propagation equations for the signal wave, incorporating SBS and birefringence, are derived and analyzed in both the Jones and Stokes spaces. The analysis shows that in the undepleted pump regime, the fiber may be regarded as a polarization-dependent gain (or loss) medium, having two orthogonal input SOPs, and corresponding two orthogonal output SOPs, for the signal, which, respectively, provide the signal with maximum and minimum SBS amplification (or attenuation). Under high Brillouin gain conditions and excluding zero-probability cases, the output SOP of arbitrarily polarized input signals, would tend to converge towards that of maximum SBS gain. In the case of high SBS attenuation the output SOP of an arbitrarily polarized signal would approach the output SOP corresponding to minimum attenuation. It is found that for a wide range of practical pump powers ( < or = 100mW) and for sufficiently long fibers with typical SBS and birefringence parameters, the signal aligned for maximum SBS interaction will enter/emerge from the fiber with its electric field closely tracing the same ellipse in space as that of the pump at the corresponding side of the fiber, albeit with the opposite sense of rotation. The analytic predictions are experimentally demonstrated for both Stokes (amplification) and anti-Stokes (attenuation) signals.