Propagation Properties Analysis for Fused-Tapered Zone of Polarization Maintaining Fibers
保偏光纤熔锥区的传输特性分析

The finite element model of fused-tapered of PMF is built. The propagation properties are analyzed according to heat transfer-structure mechanic-electromagnetics multiphysics coupling fields. The stress birefringence distribution and the refractive index curves of PANDA fibers are presented. The transition of propagation modes and the change of propagation constant are analyzed with increasing of the strength elongation. The influence of the stress applying parts (SAP) to the distribution of the electromagnetic field is studied with the reducing of fiber diameter.