研究了基于硫化物微结构光纤产生的超连续谱。设计了一种正常色散区色散平坦的硫化物芯/碲酸盐包层微结构光纤，该光纤能够获得超平坦的超连续谱。为了实现平坦的正常色散，对硫化物纤芯直径、空气孔大小和位置等光纤结构参数进行了优化，获得了波长范围在1.4~3 μm之间、起伏小于4 dB的超平坦超连续谱；同时还设计了一种硫化物芯/氟化物包层的微结构光纤，通过对光纤参数的优化，获得了波长从1.2~7 μm的超宽超连续谱。

We study the supercontinuum (SC) generation in an As2S3-based microstructured fiber. Firstly we propose a chalcogenide (As2S3) core tellurite cladding microstructured fiber with flattened normal dispersion for ultraflat SC generation. To realize flat normal dispersion, the structure parameters are then optimized including the chalcogenide core diameter, the air hole diameter and the distance between the centers of the two neighboring air holes. It is shown that an ultraflat SC spectrum with deviations less than 4 dB over an octave (from 1.4 μm to 3 μm) can be achieved. We also propose a chalcogenide core fluoride cladding microstructured fiber. After optimization of several parameters, a ultrawide SC (from 1.2 μm to 7 μm) can be generated in the microstructured fiber.