为解决锗(Ge)基硫系玻璃光纤损耗相对较高等问题，采用物理和化学除杂相结合的工艺，制备出了高纯Ge₂₈Sb₁₂Se₆₀硫系玻璃，显著降低了红外波段C、H、O杂质吸收。应用真空高速旋转法，制备出了壁厚均匀、光学质量优异的Ge₂₈Sb₁₂Se₅₈S₂硫系玻璃皮管。采用棒管法拉制出外径50±1.5 μm、具有芯包结构的Ge-Sb-Se硫系玻璃光纤，光纤弯曲半径为5 mm，红外波段吸收基线为2.2 dB/m(2.87 μm和4.5 μm处除外)。

For solving the problems about Ge system chalcogenide glass fiber′s relatively high loss, etc, high-purity Ge₂₈Sb₁₂Se₆₀ glass was prepared by chemical and physical methods of purification. The absorptions caused by C, H, O impurities were obviously reduced in IR band. Ge₂₈Sb₁₂Se₅₈S₂ chalcogenide glass tube with precision wall and fine optical properties was prepared by means of tube-rotating technique. Fibers with core-cladding structure were drawn by rod-in-tube method. The diameter of the fiber is 50±1.5 μm and the bending test showed the diameter of the circle is 5 mm. The fiber loss is 2.2 dB/m (except those at 2.87 and 4.5 μm).