Field-tracing modeling of the ultra-small gradient-index fiber probe

Field-tracing modeling of the ultra-small gradient-index fiber probe
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超小梯度折射率光纤探头的场追踪建模

DOI:
10.1016/j.ijleo.2013.05.033
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发表时间:
2013-12
期刊:
影响因子:
3.1
通讯作者:
Yu, Yingjie
Yu, Yingjie
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Wang, Chi;Bi, Shubo;Xia, Xueqin;Wang, Li;Li, Xingfei;Yu, Yingjie

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提出了一种基于场迹法的超小梯度折射率(GRIN)光纤探头模型。首先建立了梯度折射率光纤探头的光学模型,该探头由单模光纤、无芯光纤和梯度折射率光纤透镜组成。然后,沿着地提出了场追踪这一术语,并介绍了它在梯度折射率光纤探头数值建模中的应用。最后,利用商业光学软件VirtualLab对梯度折射率光纤探针的场迹模型进行了仿真,并将仿真结果与已发表的实验数据进行了对比分析。仿真结果表明,对于不同长度的NCF和GRIN光纤透镜,VirtualLab仿真得到的工作距离和焦斑尺寸与实验结果吻合较好。因此,所提出的场跟踪方法是一个有效的工具,进一步优化设计的梯度折射率光纤探头,通过使用软件VirtualLab。
Field-tracing approach was proposed to model an ultra-small gradient-index (GRIN) fiber probe. Firstly, the optical model of the GRIN fiber probe was described that consists of a single-mode fiber (SMF), a no-core fiber (NCF), and a gradient-index fiber lens. Then, the term of the field-tracing was presented along with its application in the numerical modeling of the GRIN fiber probe. Finally, the commercial optical software, VirtualLab, was used to simulate the field-tracing model of the GRIN fiber probe, where the comparison analysis between the simulation results and published experimental data was performed. The simulation results show that with respect to the different lengths of NCF and GRIN fiber lens, the simulated working distances and focus spot sizes in VirtualLab all agree with the experimental data closely. Therefore, the proposed field-tracing approach is an effective tool for further optimal design of the GRIN fiber probe by using the software VirtualLab.
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