A simulated interferograms of multiple-beam interference Fizeau fringes (in transmission) and a modeling equation which simulates the phase modulation of polyethylene fiber (HDPE fiber) with different draw ratios were presented. As far as we know, this is the first time that a modeling equation has been presented that simulates the multiple-beam Fizeau interferograms for drawing polyethylene fibers with different draw ratios. The interferograms were analyzed using all the peaks of Fourier transform (FT) spectra. The peaks of the FT spectra play an important role in the precision of analyzing the interferograms and in the precision of the obtained contour lines of the fringes. The influence of the peaks of the FT spectra on the fringe shift inside the fiber, the refractive indices, the birefringence, the orientation function, the polarizability per unit volume, and other structural parameters of drawing polyethylene fiber were examined. The comparison between the outcomes in the situation of the first peak and all the peaks of FT spectra was given. The calculated results from the presented modeling equation are in agreement with the published experimental results of the drawing polyethylene fiber. For more explanation, simulated interferograms, tables, and figures are presented.

提出了多光束干涉斐索条纹（传输中）的模拟干涉图和模拟具有不同拉伸比的聚乙烯纤维（HDPE 纤维）的相位调制的建模方程。据我们所知，这是第一次提出一个建模方程来模拟用于拉伸具有不同拉伸比的聚乙烯纤维的多光束 Fizeau 干涉图。使用傅立叶变换 (FT) 光谱的所有峰分析干涉图。FT 光谱的峰值对干涉图的分析精度和获得的条纹轮廓线的精度起着重要作用。FT 光谱峰值对光纤内部条纹位移、折射率、双折射、取向函数的影响，检查了单位体积的极化率和拉伸聚乙烯纤维的其他结构参数。给出了FT谱第一峰与所有峰情况下的结果对比。所提出的建模方程的计算结果与已发表的拉伸聚乙烯纤维的实验结果一致。为了进一步解释，提供了模拟干涉图、表格和图形。