Technology of low-loss high-reliability fusion splicing between photonic crystal fiber and polarization-maintaining fiber

WANG Xiaoling; ZHAO Yafei; LIU Baolin; ZHANG Zijian; WANG Qiwei

doi:10.37188/OPE.20233124.3540

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Technology of low-loss high-reliability fusion splicing between photonic crystal fiber and polarization-maintaining fiber

Modern Applied Optics | 更新时间：2023-12-28

- Technology of low-loss high-reliability fusion splicing between photonic crystal fiber and polarization-maintaining fiber
- Optics and Precision Engineering Vol. 31, Issue 24, Pages: 3540-3548(2023)
- 作者机构：
  
  北京控制工程研究所，北京 100094
- 作者简介：
- 基金信息：
- DOI：10.37188/OPE.20233124.3540
  CLC： TN253
- Received：14 June 2023，
  
  Revised：19 July 2023，
  
  Published：25 December 2023
- 稿件说明：
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王晓玲,赵亚飞,刘保林等.光子晶体与保偏光纤低损耗、高可靠熔接工艺[J].光学精密工程,2023,31(24):3540-3548.

WANG Xiaoling,ZHAO Yafei,LIU Baolin,et al.Technology of low-loss high-reliability fusion splicing between photonic crystal fiber and polarization-maintaining fiber[J].Optics and Precision Engineering,2023,31(24):3540-3548.
王晓玲,赵亚飞,刘保林等.光子晶体与保偏光纤低损耗、高可靠熔接工艺[J].光学精密工程,2023,31(24):3540-3548. DOI： 10.37188/OPE.20233124.3540.

WANG Xiaoling,ZHAO Yafei,LIU Baolin,et al.Technology of low-loss high-reliability fusion splicing between photonic crystal fiber and polarization-maintaining fiber[J].Optics and Precision Engineering,2023,31(24):3540-3548. DOI： 10.37188/OPE.20233124.3540.

摘要

光子晶体光纤利用周期性的空气孔结构实现导光，具有空间辐射不敏感的特性。在光子晶体光纤空间应用中，存在与保偏尾纤熔接损耗大、熔接强度低的问题。本文对光子晶体光纤与保偏光纤熔接工艺进行研究。首先分析了光子晶体光纤和保偏光纤熔接损耗的产生机理，结合有限元仿真获得了熔接损耗与熔接功率和熔接时间的关系，并通过熔接实验对计算结果进行了验证。在此基础上，重点关注了熔接功率和时间对熔接强度的影响，通过实验获得了最优的熔接功率和熔接时间。最后，通过提升光纤端面质量、偏移加热位置、优化熔接参数等方法进一步提升了熔接点质量，实现了低熔接损耗与高熔接强度的平衡。利用优化后的熔接参数开展了光子晶体光纤与保偏光纤熔接实验，实验结果表明，平均熔接损耗达到0.82 dB水平，均低于1 dB，平均熔接强度139 kpsi，均大于100 kpsi，满足宇航空间应用的光纤低损耗、高可靠的熔接需求。

Abstract

Photonic crystal fibers （PCFs） use periodic air hole structures to achieve light conduction， which is insensitive to space radiation. However， problems of high splice loss and low splice strength occur when the PCF splices with a PMF in the aerospace field. Therefore， investigating the fusion splicing between the PCF and PMF is crucial. First， the mechanism of splice loss between the PCF and PMF is analyzed. Next， the relationships of the splice loss with splice power and splicing time are derived via finite element simulation. The results are verified through splicing tests. Based on these， the effects of splice power and splice time on the tensile strength of splicing is emphasized， and the optimal splice power and splice time are obtained experimentally. Finally， the splicing quality is further improved by enhancing the quality of the fiber ends， shifting the heating position， multiple heating， and optimizing the splice parameters. The splicing experimental results show that the average splice loss reaches 0.82 dB， both lower than 1 dB， and the average mechanical strength is 139 kpsi， both higher than 100 kpsi. These values satisfy the requirements for low loss and high reliability of fiber fusion splicing in space applications.

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