通过引入特征温度与硫系玻璃相匹配的高性能热塑性聚合物聚酰亚胺(PEI)作为光纤包层，结合复丝工艺制备了像素数为900的As2S3/PEI光纤传像束，表征了光纤的损耗、光纤束的断丝率、分辨率和串扰率。As2S3/PEI光纤在2~6 μm 波段传输性能优异，背景损耗约为0.5 dB/m，在S-H 杂质对应的4.0 μm 波长的峰值损耗为3.5 dB/m。单丝直径为80 μm、像素数为900的光纤束的断丝率为1%，分辨率为7 line/mm，串扰率为1%，通过此传像束得到了清晰的电烙铁红外图像。而且，将PEI溶于二甲基乙酰胺(DMAC) 后使光纤束表现出很好的柔性。采用这种类似“酸溶玻璃”的可溶于特定溶剂的热塑性聚合物，作为过渡介质，结合复丝工艺有望制备出柔性高分辨率硫系玻璃光纤传像束。

A high performance thermoplastic polymer, polyetherimide (PEI), which is thermally compatible with some chalcogenide glasses, is introduced as a cladding material to fabricate fiber image bundles. As2S3/PEI image bundles consisting of 900 fibers are fabricated through a stack and draw approach. The loss of the fibers, the dark fiber ratio, the resolution and crosstalk of the image bundles are characterized. The As2S3/PEI shows a good transmitting property in the 2 μm to 6 μm spectral region. The background loss is about 0.5 dB/m, and the peak loss at 4.0 μm due to S-H impurity absorption is about 3.5 dB/m. The fiber bundle containing 900 fibers with a diameter of 80 μm has a dark fiber ratio of 1%, exhibits a resolution of 7 line/mm and shows crosstalk of 1%. Clear infrared image of a soldering iron tip is obtained through this fiber bundle. The flexibility of the fiber bundles is achieved by dissolving the PEI into a solvent dimethylacetamide (DMAC). Flexible high-resolution chalcogenide fiber image bundles may be fabricated through the stack and draw approach using a thermoplastic polymer which can be dissolved into special solvents as an interlayer material similar to the‘acid-dissolved glass’.