Abstract The actively developed direction at the present time is the production of chalcogenide glasses with a low content of impurities and the manufacture of optical fibers with low optical losses on their basis. The transparency of glasses, characterized in optical fibers by the level of optical losses, refers to the key parameters of optical fibers and determines the attenuation of the signal passing through the fiber. The lowest optical losses that were achieved in multimode fibers from sulfide, selenide, and arsenic sulfoselenide glasses are 12–14; 60 and 67 dB/km, respectively. Real level of optical losses in chalcogenide glass fibers are two or more orders higher than theoretically predicted. The magnitude of this discrepancy contains the constituent parts associated with the nature and properties of glass, with the conditions for the manufacture of glass and optical fibers as well as with the methodology for the theoretical evaluation of the magnitude of intrinsic optical losses in glass. In this paper the structure, the main sources of excessive losses, the ways of approximation of real and theoretically predicted losses are considered on the example of optical fibers produced from arsenic-based chalcogenide glasses.

中文翻译：

---

降低硫化砷玻璃红外光纤光损的问题

摘要 目前积极发展的方向是生产低杂质含量的硫属化物玻璃，并在此基础上制造低光损耗的光纤。玻璃的透明度，以光损耗的高低来表征光纤，是指光纤的关键参数，决定着通过光纤的信号的衰减。在由硫化物、硒化物和砷硫硒化物玻璃制成的多模光纤中实现的最低光损耗为 12-14；分别为 60 和 67 dB/km。硫属化物玻璃光纤中的实际光损耗水平比理论预测高两个或更多数量级。这种差异的大小包含与玻璃的性质和特性相关的组成部分，玻璃和光纤的制造条件以及玻璃固有光损耗大小的理论评估方法。在本文中，以砷基硫属化物玻璃生产的光纤为例，考虑了结构、过度损耗的主要来源、实际和理论预测损耗的近似方法。