国防科技大学学报2025，Vol.47Issue(5)：51-61,11.DOI:10.11887/j.issn.1001-2486.25030031
异质光纤熔接多物理场仿真和实验研究及中红外激光应用
Multi-physics simulation and experimental research on heterogeneous optical fiber fusion splicing with mid-infrared laser applications
摘要
Abstract
To address the challenges of interfacial defects and thermal mismatch in heterogeneous optical fusion fiber splicing for integration of mid-infrared all-fiber lasers system,a multiphysics-coupled modeling and parameter co-optimization methodology was proposed.By constructing an asymmetric splicing model,the coupling mechanisms between thermal gradient distribution,material properties,and fiber dimensions was revealed.A parameter optimization methodology for splicing experiments was established through numerical simulations,achieving low-loss(0.15 dB)and high-strength(278 g)splicing of silica/fluoride/fluorotellurite fibers.Experimental results demonstrated that the optimized heterogeneous fiber splice joints achieved high-power transmission acrossmultiple bands(>23.2 W@1 976 nm,>100 W@981 nm)and enabled a fully fiberized 2.8 μm laser system with an output power of 20.3 W.Accelerated aging tests confirmed the system's long-term stability(0.37%power fluctuation@10.2 W over1 h)and validated that the splice joints met high-power damage resistance thresholds.关键词
异质光纤熔接/中红外激光/全光纤化/激光器系统集成Key words
heterogeneous optical fusion fiber splicing/mid-infrared laser/all-fiber/laser system integration分类
信息技术与安全科学引用本文复制引用
陈诗敏,肖旭升,何文涛,刘成振,郭海涛..异质光纤熔接多物理场仿真和实验研究及中红外激光应用[J].国防科技大学学报,2025,47(5):51-61,11.基金项目
国家自然科学基金资助项目(62090065) （62090065）
陕西省自然科学基金资助项目(J23-016-Ⅲ) （J23-016-Ⅲ）
