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本文研究了计算保偏光纤中应力双折射特性的微元算法，对其计算值进行了理论验证。微元算法可计算以往理论方法无法讨论的非理想保偏光纤中的应力双折射。此算法的计算结果可应用于保偏光纤制造时的工艺设计，以及保偏光纤定轴时的偏差量修正等。文中给出了应用实例
In this paper, the calculation of stress birefringence polarization-maintaining optical element algorithm, the calculated value of a theoretical validation. The micro-element algorithm can calculate the stress birefringence in non-ideal polarization-maintaining fibers which can not be discussed by previous theoretical methods. The calculation results of this algorithm can be applied to the process design of PM fiber and the offset correction of PM fiber axis. The article gives the application example