强激光与粒子束2013，Vol.25Issue(4)：841-846,6.DOI:10.3788/HPLPB20132504.0841
环状光纤单模条件和远场能量分布特性
Condition for realizing single-mode operation and energy distribution characteristics in far-field of annular core fibers
摘要
Abstract
Based on the weak guidance approximation,the condition for realizing single mode operation of annular core fiber (ACF) and the energy distribution in far-field are discussed.The theoretical results demon-strate that when an ACF realizes single-mode operation,the annular beam emitted from the end of ACF diffracts to a central circular area in the far-field with good energy focusability.Besides,the beam width gets smal-ler when the thickness of the guiding section and the refractive index difference between the cladding and fibercore are reduced.关键词
环状光纤/单模/远场/能量分布Key words
annular core fibers/ single mode/ far field/ energy distribution分类
信息技术与安全科学引用本文复制引用
惠祥云,段开椋,闫红卫..环状光纤单模条件和远场能量分布特性[J].强激光与粒子束,2013,25(4):841-846,6.基金项目
Supported by National Natural Science Foundation of China (61138007) （61138007）
