采用模式分析法处理两保偏光纤在连接中各种几何不对准误差引起的损耗和消光比的计算问题，给出了数值求解的结果。该结论对保偏光纤的连接、熔接和耦合等具有一定的指导意义 The problem of calculating the loss and extinction ratio caused by the geometric misalignments of the two polarization maintaining fibers during the connection is analyzed by using the pattern analysis method. The numerical results are given. This conclusion is of guiding significance for the connection, welding and coupling of polarization maintaining fibers