超小自聚焦光纤探头研究用场追迹数值模拟技术  

Field-tracing based numerical simulation technique for the investigation of ultra-small self-focusing optical fiber probe

作　　者：王驰[1,2] 毕书博[1] 王利[3] 夏学勤[1] 丁卫[1] 于瀛洁[1] 

机构地区：[1]上海大学精密机械工程系,上海200072 [2]精密测试技术及仪器国家重点实验室,天津大学,天津300072 [3]中国科学院上海光学精密机械研究所,上海201800

出　　处：《物理学报》2013年第2期340-349,共10页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:41104065);精密测试技术及仪器国家重点实验室开放基金;上海市"晨光计划"(批准号:12CG47);上海市教育委员会科研创新项目(批准号:13YZ022)资助的课题~~

摘　　要：研究场追迹数值模拟技术在超小自聚焦光纤探头设计与分析中的应用方法.首先,论述场追迹的概念及其基本原理;其次,论述场追迹在VirtualLab软件中的实现方法;最后,研究超小自聚焦光纤探头在基于场追迹的物理光学软件VirtualLab中的建模与分析方法,并进行仿真结果与实验结果的比较分析.结果显示,如设无芯光纤的长度为0.36mm,自聚焦光纤透镜的长度分别为0.10,0.11和0.12mm,计算所得的工作距离分别为0.75,0.63和0.51mm,光斑尺寸分别为32,24和19μm.理论计算结果与实验结果符合,表明基于场追迹的数值模拟技术是研究超小自聚焦光纤探头设计与分析方法的一个有效手段.Field-tracing based numerical simulation technique is investigated to design and analyze ultra-small self-focusing optical fiber probe. Firstly, the concept and principle of the field-tracing are described. Secondly, the method is discussed to implement the field-tracing technique in the physical optical software of VirtualLab. Finally, an ultra-small self-focusing optical fiber probe is simulated in the field-tracing based optical software of VirtualLab. In this paper, we find that under the conditions of a fiber spacer length of 0.36 mm and the self-focusing fiber lens lengths of 0.1 mm, 0.11 mm and 0.12 mm, the working distances of the probe are 0.75 mm, 0.63 mm and 0.51 mm, and the focus spot sizes are 32 μm, 24 μm and 19 μm respectively. The simulation results are in good agreement with the experimental data, showing that the field-tracing based numerical simulation technique is an effective tool for investigating ultra-small self-focusing optical fiber probe.

关 键 词：场追迹 光学探头 数值模拟技术 光学相干层析技术 

分 类 号：TN253[电子电信—物理电子学]