红外与毫米波学报2026，Vol.45Issue(2)：217-226,10.DOI:10.11972/j.issn.1001-9014.2026.02.003
柔性低损耗高可靠性聚酰亚胺中红外空芯光纤的制备及其CO2激光传输性能研究
Fabrication of flexible,low-loss and high-reliability PI mid-infrared hollow optical fiber and investigation of its CO2 laser transmission performances
摘要
Abstract
Hollow optic fiber delivery of CO2 and other mid-infrared lasers faces several challenges in terms of transmis-sion loss,bending flexibility and reliability,which limits its applications in laser medicine,flexible industrial process-ing,and intelligent sensing.A flexible,low-loss mid-infrared hollow fiber with enhanced PI/Ag/AgI interfacial bonding strength has been developed by utilizing plasma activation of polyimide(PI)structural tubes and a dynamic liquid-phase deposition process.The results showed that after plasma treatment,the N-C bonds on the surface of PI were converted to N-O bonds and active groups such as carboxyl were formed.This results in enhancement of surface hydrophilicity and the interfacial bonding strength between PI and Ag/AgI layers(from level 0 to level 2)without noticeably increas-ing surface roughness.The as-fabricated PI hollow fiber(ID=2 mm)exhibited a low-loss transmission window within 8-15 μm wavelength range,achieving a linear transmission loss as low as 0.05 dB/m at 10.6 μm.When bent 180° with a radius of 20 cm,the loss increased only to 0.55 dB/m.The fiber could deliver a 30 W CO2 laser beam for 300 s at 150 ℃ without damage.After 400 min of vibration testing and 120 min of high-low temperature aging(150/-196℃),the transmission loss remained stable,showing its value for practical applications.关键词
PI空芯光纤/中红外/等离子体处理/CO2激光/传输性能Key words
PI hollow fiber/mid-infrared/plasma treatment/CO2 laser/transmission performance分类
信息技术与安全科学引用本文复制引用
余烁颖,褚君浩,祝润苗,刘晟,查志鹏,张擎天,侯广宁,费楹迪,刘少华,敬承斌..柔性低损耗高可靠性聚酰亚胺中红外空芯光纤的制备及其CO2激光传输性能研究[J].红外与毫米波学报,2026,45(2):217-226,10.基金项目
国家重点研发计划(2024YFB4611400) Supported by the National Key Research and Development Program of China(2024YFB4611400) （2024YFB4611400）
