Department of Applied Physics, KTH Royal Institute of Technology, Roslagstullsbacken 21, 114 21 Stockholm, Sweden.
Rev Sci Instrum. 2022 Dec 1;93(12):125102. doi: 10.1063/5.0096883.
We report the development of a specialty optical fiber preform fabrication system based on carbon monoxide (CO) laser heating. The laser heating is accomplished via a single-beam optical arrangement integrated into a rotating glass lathe. The CO laser output power and its beam quality are affected by absorption of the laser radiation by water vapor present in the surrounding air. This is addressed by construction of an enclosed and fully motorized system to enable preform processing in a dry air environment. The performance of the system is evaluated, and the ability to maintain a desired preform processing temperature is demonstrated. Relevant aspects of preform manufacturing, such as glass cutting, splicing, tapering, and overcladding, are described in detail. The process of using these aspects to fabricate optical fiber preforms made of highly dissimilar materials and of various core-to-cladding ratios is discussed. Specialty fibers drawn from these preforms exhibit low-loss and show good optical performance.
我们报告了一种基于一氧化碳（CO）激光加热的特种光纤预制棒制造系统的开发。激光加热是通过集成到旋转玻璃车床上的单光束光学装置来完成的。CO 激光输出功率及其光束质量受到周围空气中水蒸气对激光辐射吸收的影响。通过构建一个封闭的、完全自动化的系统来解决这个问题，以实现在干燥空气环境中进行预制棒加工。对系统的性能进行了评估，并演示了维持所需预制棒加工温度的能力。详细描述了预制棒制造的相关方面，如玻璃切割、拼接、锥化和外包层。讨论了使用这些方面制造由不同材料制成的具有不同芯/包层比的光纤预制棒的过程。从这些预制棒中拉制的特种光纤表现出低损耗，并具有良好的光学性能。
