人工晶体学报2026，Vol.55Issue(7)：1022-1043,22.DOI:10.16553/j.cnki.issn1000-985x.2026.0057
蓝宝石单晶光纤包层化技术的演进与前瞻
Cladding Technologies for Sapphire Single-Crystal Fiber:Evolution and Prospects
摘要
Abstract
Sapphire single-crystal fiber is an promising candidate material for optical sensing in extreme environments due to its excellent properties such as high-temperature resistance,corrosion resistance,radiation resistance and wide spectral transmission.However,most of the existing sapphire single-crystal fibers are non-cladding structures,which have problems such as weak mode confinement,high transmission loss and strong environmental sensitivity,which restrict their practical engineering applications.By constructing a low-refractive-index optical confinement structure outside or inside the sapphire single-crystal fiber,the cladding processing improves its transmission performance,improves the device level and expands the application scenarios.In this paper,the research progress in cladding technologies for sapphire single-crystal fiber is systematically reviewed.These technologies can be classified into three categories:external additive cladding techniques,internal modification cladding techniques,and micro-structured cladding techniques.The implementation principles,fabrication processes,representative studies,and performance characteristics of these technologies are summarized.The development status,technical features,and application potential of different cladding routes are also comparatively analyzed.On this basis,the development direction of sapphire single-crystal fiber cladding technology is prospected for extreme environment transmission and sensing applications.关键词
蓝宝石单晶光纤/包层化技术/极端环境传感/外添型包层化技术/内改型包层化技术/微结构包层化技术/光纤器件Key words
sapphire single-crystal fiber/cladding technology/extreme-environment sensing/external additive cladding technique/internal modification cladding technique/micro-structured cladding technique/fiber device分类
信息技术与安全科学引用本文复制引用
李乾,周峰,刘显明,雷小华,章鹏,许亨艺..蓝宝石单晶光纤包层化技术的演进与前瞻[J].人工晶体学报,2026,55(7):1022-1043,22.基金项目
国家自然科学基金(52475547) （52475547）
重庆市自然科学基金(CSTB2025NSCQ-LZX0005) （CSTB2025NSCQ-LZX0005）
