光纤端面平面型螺旋相位板设计

章杰侈; 夏长权; 高锐

doi:10.13756/j.gtxyj.2021.03.007

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光纤端面平面型螺旋相位板设计

光电器件研究与应用

- 光纤端面平面型螺旋相位板设计
- Design of Flat Spiral Phase Plate on Fiber End Face
- 光通信研究 2021年第3期页码：29-32,37
- 作者机构：
  
  1.江苏信息职业技术学院电子信息工程学院，江苏　无锡　214000
  2a.扬州大学　物理科学与技术学院，江苏　扬州　225002
  2b.扬州大学　信息工程学院，江苏　扬州　225002
  3.中国科学院上海光学精密机械研究所　强场激光物理国家重点实验室，上海　201800
- 作者简介：
  
  章杰侈（1986-），男，江苏宿迁人。讲师，硕士，主要研究方向为光通信技术。
  夏长权，讲师。E-mail：xiachq@yzu.edu.cn
- 基金信息：
  
  国家自然科学基金资助项目(61901408);中国科学院上海光学精密机械研究所强场激光物理国家重点实验室开放课题资助项目(2020，夏长权);江苏省专用集成电路设计重点实验室开放课题资助项目(2020KLOP007);江苏信息职业技术学院科研课题资助项目(2020，章杰侈)
- DOI：10.13756/j.gtxyj.2021.03.007
  中图分类号： TN253
- 纸质出版日期：2021-06-10，
  
  收稿日期：2020-08-31，
扫描看全文
章杰侈, 夏长权, 高锐. 光纤端面平面型螺旋相位板设计[J]. 光通信研究, 2021,(3):29-32,37.

ZHANG Jie-chi, XIA Chang-quan, GAO Rui. Design of Flat Spiral Phase Plate on Fiber End Face[J]. Study on Optical Communications, 2021,(3):29-32,37.
章杰侈, 夏长权, 高锐. 光纤端面平面型螺旋相位板设计[J]. 光通信研究, 2021,(3):29-32,37. DOI： 10.13756/j.gtxyj.2021.03.007.

ZHANG Jie-chi, XIA Chang-quan, GAO Rui. Design of Flat Spiral Phase Plate on Fiber End Face[J]. Study on Optical Communications, 2021,(3):29-32,37. DOI： 10.13756/j.gtxyj.2021.03.007.

摘要

针对传统阶梯型高阶螺旋相位板在光纤端面上制作难度大和使用过程中容易损坏的问题，文章提出了一种在光纤端面上制作平面型螺旋相位板的设计方案。这种相位板在不同方位角上高度相同，通过控制不同方位角处的折射率可获得不同的拓扑荷数。文章使用菲涅尔衍射理论对该方案产生的涡旋电场分布及光强分布进行了详细的理论分析，同时采用时域有限差分方法对基模高斯光束通过具有不同拓扑荷数的平面型螺旋相位板后在光纤中的传播过程进行了仿真验证。仿真结果表明，该种光纤端面平面型相位板对于高阶和低阶模式都能产生高质量的涡旋光束，有效克服了传统阶梯型螺旋相位板存在的不足。

Abstract

Traditional high-order stepped spiral phase plate that is difficult to fabricate on the fiber end face and easy to damage during the application. In order to solve these issues

a design scheme of flat spiral phase plate fabricated on the fiber end face is proposed. This kind of phase plate has the same height at different azimuth angles

and different topological charges are obtained by controlling the refractive index at different azimuth angles. The Fresnel diffraction theory is used to conduct a detailed theoretical analysis of the vortex electric field distribution and light intensity distribution generated by this scheme. The finite difference time domain method is used to simulate the propagation process of the fundamental mode Gaussian beam in the fiber after passing through the flat spiral phase plate with different topological charge. The results show that this kind of flat phase plate on fiber end face can generate high-quality vortex beams for both high-order and low-order modes

which effectively overcomes the shortcomings of traditional stepped spiral phase plate.

关键词

涡旋光束光纤端面平面型螺旋相位板折射率拓扑荷数

Keywords

vortex beamfiber end faceflat spiral phase platerefractive indextopological charge

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