光子学报, 2020, 49 (9): 0906001, 网络出版: 2020-12-26
球形端面光纤与黑体光源耦合效率分析 下载: 591次
Coupling Efficiency of Light Intensity from Blackbody Cavity into Spherical Optical Fiber
球形端面光纤 黑体光源 理论耦合模型 耦合效率 光能耦合实验 Fiber with spherical end face Blackbody cavity Theoretical coupling model Coupling efficiency Coupling experiment
摘要
为提高黑体光源的入纤强度,采用球形端面光纤为接收光纤,建立球形端面光纤与黑体辐射腔光能耦合模型,分析球形端面光纤参数、黑体腔参数等对光能耦合效率的影响.搭建黑体腔与球形端面光纤的光能耦合实验系统,在800~1 000℃条件下开展了光能耦合实验,结果表明:随着球形端头直径的增加,耦合光能先增大后减小;当曲率半径约为85 μm时,光能耦合强度最高.相对于平端面光纤而言,耦合效率提高约60%.
Abstract
To improve coupling efficiency from blackbody source into fiber, a coupling model of light intensity from the blackbody cavity into a spherical optical fiber was proposed. Influence of parameters of spherical fiber and blackbody cavity on coupling efficiency was analyzed. Results show that coupling efficiency firstly increases and then decreases with the increase of radius of spherical fiber. When radius is around 85 μm, coupling efficiency reaches the maximum. Spherical fibers with radius from 65 μm to 105 μm were fabricated by fusion splicer. Experiments were carried out with spherical fibers and a fiber with flat end face. Results show that compared with the fiber with flat end face, coupling efficiency of spherical fiber is greatly improved, when radius is around 85 μm, coupling efficiency is improved by approximately 60%. The experimental results are consistent with the theoretical analysis.
宋超鑫, 雷小华, 谢磊, 刘显明, 陈伟民. 球形端面光纤与黑体光源耦合效率分析[J]. 光子学报, 2020, 49(9): 0906001. Chao-xin SONG, Xiao-hua LEI, Lei XIE, Xian-ming LIU, Wei-min CHEN. Coupling Efficiency of Light Intensity from Blackbody Cavity into Spherical Optical Fiber[J]. ACTA PHOTONICA SINICA, 2020, 49(9): 0906001.