论文部分内容阅读
选用组分为Ge15Sb20S65和Ge25Sb5Se70的两组硫系玻璃,制备了多种尺寸的高质量硫系玻璃,分析了两组玻璃的物理、热学和光学性能;利用复合层叠挤压法制备了硫系玻璃光纤预制棒,避免了钻孔法或其他机械加工引起的预制棒界面缺陷,且光纤端面结构可随模具尺寸自由设计,挤压后光纤预制棒结构整齐,内外界面整洁光滑;利用高温聚合物保护的预制棒具有良好的机械性能,用光纤拉丝机将具有保护层的预制棒拉制成光纤;利用普通光纤抛光机进行端面抛光,光纤端面结构均匀,界面无明显缺陷。傅里叶红外光纤光谱仪(FTIR)测试光纤损耗谱表明,在波长4.8μm处光纤的最低损耗为2.63dB/m。
Two kinds of chalcogenide glass with composition of Ge15Sb20S65 and Ge25Sb5Se70 were selected to prepare high-quality chalcogenide glass of various sizes. The physical, thermal and optical properties of the two groups of glasses were analyzed. The chalcogenide glass The optical fiber preform rod avoids the defect of the preform interface caused by drilling or other mechanical processing, and the fiber end surface structure can be freely designed according to the die size. The optical fiber preform rod after the extrusion has a neat structure and the inner and the outer interfaces are clean and smooth; the high temperature polymer protection Of the preform has good mechanical properties, the use of optical fiber drawing machine will have a protective layer of preform drawn into optical fiber; the use of ordinary fiber polishing machine for end polishing, fiber end face structure is uniform, no obvious interface defects. The FTIR test of the fiber loss spectrum shows that the minimum loss of the fiber at the wavelength of 4.8 μm is 2.63 dB / m.