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透2～10微米红外光的光学纤维受到重视,研究工作十分活跃。在信息传输方面。可望传输损耗能比目前1微米液段用的石英光学纤维低二个数量级左右,达到10~(-3)分贝/公里,并希望用来传输加工和医疗用的CO_2激光(波长10.6微米)。目前的工作重心是寻找最佳材料和选择制造方法。主要的材料有重金属氧化物、硫硒碲化合物和卤化物。除玻璃之外,尚在研究多晶或单晶材料。目前已经能制作芯径50～250微米、长100米、损耗300分贝/公里的卤化玻璃纤维,能透20瓦CO_2激光的多晶纤维,以及长1.5米的单晶纤维。
Optical fibers penetrating through 2 to 10 microns of infrared light have received great attention and research work has been very active. In terms of information transfer. It is expected that the transmission loss will be about two orders of magnitude lower than that of quartz optical fibers used in the current 1 μm liquid section, reaching 10 -3 dB / km, and it is hoped to be used for the transmission of CO 2 laser (wavelength 10.6 μm) for processing and medical use. . The current focus of work is to find the best materials and choose the manufacturing method. The main materials are heavy metal oxides, sulfur, selenium and tellurium compounds and halides. In addition to glass, polycrystalline or single crystal materials are still being studied. Halonated glass fibers having a core diameter of 50 to 250 microns, a length of 100 meters and a loss of 300 decibels / km, polycrystalline fibers capable of penetrating 20 watts of CO2 laser, and single crystal fibers having a length of 1.5 meters have been produced.