Mamdem Y Sikali, Burov E, de Montmorillon L-A, Jaouën Y, Moreau G, Gabet R, Taillade F
EDF R&D, 6 Quai Watier 78401 Chatou, France.
Opt Express. 2012 Jan 16;20(2):1790-7. doi: 10.1364/OE.20.001790.
Residual stresses inside optical fibers can impact significantly on Brillouin spectrum properties. We have analyzed the importance of internal stresses on the Brillouin Gain Spectrum (BGS) for a conventional G.652 fiber and compared modeling results to measurements. Then the residual internal stresses have been investigated for a set of trench-assisted fibers: fibers are coming from a single preform with different draw tensions. Numerical modeling based on measured internal stresses profiles are compared with corresponding BGS experimental results. Clearly, Brillouin spectrum is shifted linearly versus draw tension with a coefficient of -20MHz/100g and its linewidth increases.
光纤内部的残余应力会对布里渊光谱特性产生显著影响。我们分析了常规G.652光纤内部应力对布里渊增益谱（BGS）的重要性，并将建模结果与测量结果进行了比较。然后，对一组沟槽辅助光纤的残余内部应力进行了研究：这些光纤来自具有不同拉伸张力的单个预制棒。将基于测量的内部应力分布的数值建模与相应的BGS实验结果进行了比较。显然，布里渊光谱随拉伸张力呈线性偏移，系数为-20MHz/100g，并且其线宽增加。
