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面向模分复用的偏振保持领结型椭圆芯少模光纤的设计

慈英娟 任芳 张金玉 牛晶晶 雷晓 张燕飞 王晓晖

慈英娟, 任芳, 张金玉, 等. 面向模分复用的偏振保持领结型椭圆芯少模光纤的设计[J]. 强激光与粒子束. doi: 10.11884/HPLPB202234.210105
引用本文: 慈英娟, 任芳, 张金玉, 等. 面向模分复用的偏振保持领结型椭圆芯少模光纤的设计[J]. 强激光与粒子束. doi: 10.11884/HPLPB202234.210105
Ci Yingjuan, Ren Fang, Zhang Jinyu, et al. Design of polarization-maintaining bow-tie elliptical-core few-mode fiber for mode-division-multiplexing[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202234.210105
Citation: Ci Yingjuan, Ren Fang, Zhang Jinyu, et al. Design of polarization-maintaining bow-tie elliptical-core few-mode fiber for mode-division-multiplexing[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202234.210105

面向模分复用的偏振保持领结型椭圆芯少模光纤的设计

doi: 10.11884/HPLPB202234.210105
基金项目: 中央高校基本科研业务费专项资金(Nos. FRF-BD-20-11A)
详细信息
    作者简介:

    慈英娟,ciyingjuan@163.com

    通讯作者:

    任 芳,renfang@ustb.edu.cn

  • 中图分类号: TN252

Design of polarization-maintaining bow-tie elliptical-core few-mode fiber for mode-division-multiplexing

  • 摘要: 提出了一种弱耦合领结型椭圆芯应力保偏少模光纤(PM-FMF),通过使用高折射率纤芯,所提出的光纤可在1505~1585 nm波段下,支持32个独立的本征模式。椭圆纤芯和领结型应力区的引入,有效地分离了相邻的本征模式。采用有限元法对领结型椭圆芯应力PM-FMF的纤芯及领结型应力区的结构参数进行优化。评估了光纤参数对模式数量、模式间的最小有效折射率差、模态双折射、应力双折射以及弯曲损耗的影响。此外还分析了该光纤的带宽性能,包括模式间的有效折射率、有效折射率差、差分模式时延(DMD)。经数据分析,在1505~1585nm波段下,该光纤支持的32个本征模式是完全分离的,相邻模式之间的最小有效折射率差大于1.295×10−4。所提出的弱耦合保偏少模光纤能够提高传输容量,在本征模式复用传输中具有潜在的应用前景。
  • 图  1  光纤的结构

    Figure  1.  Schematic diagram of fiber structure

    图  2  纤芯尺寸对光纤性能的影响

    Figure  2.  Variations of the optical performance as a function of core size

    图  3  光纤支持的模式数量和minΔneff随Δ的变化

    Figure  3.  Variation of number of supported modes and minΔneff as a function of

    图  4  光纤性能随应力区参数的变化

    Figure  4.  Variation of the optical performance as a function of stress-applying areas

    图  5  应力区参数对光纤性能的影响

    Figure  5.  Variation of the optical performance as a function of stress-applying areas

    图  6  所设计的椭圆纤芯领结型PM-FMF的32个本征模式的电场分布和电场矢量图(白色箭头)

    Figure  6.  Mode field distributions with electric vectors (white arrows) of the proposed bow-tie elliptical-core PM-FMF

    图  7  光纤的双折射特性

    Figure  7.  Birefringence properties of optical fibers

    图  8  光纤的弯曲损耗特性

    Figure  8.  Bending loss characteristics of optical fibers

    图  9  光纤性能对波长的依赖性

    Figure  9.  Variations of the optical performance as a function of wavelength

    图  10  DMD随波长的变化

    Figure  10.  Variations of DMD as a function of wavelength

    表  1  领结型椭圆芯PM-FMF中32个本征模式在1550nm波长处的neff、ΔneffAeff、DMD

    Table  1.   neff, Δneff, Aeff and DMD of the 32 eigenmodes for bow-tie elliptical-core PM-FMF at 1550 nm

    modeneffΔneff(10−4)Aeff(µm2)DMD(ns/km)
    HG00x1.46834.80390.961.727
    HG00y1.467818.87890.88−7.946
    HG10x1.46594.79987.011.776
    HG10y1.465410.45086.78−4.804
    HG01x1.46444.93280.481.627
    HG01y1.463914.08180.72−7.396
    HG20x1.46254.64084.711.847
    HG20y1.46209.19884.08−4.247
    HG11x1.46115.03387.211.684
    HG11y1.460623.28687.53−6.646
    HG02x1.45832.17473.55−3.479
    HG30x1.45802.88885.345.077
    HG02y1.45781.61274.48−3.209
    HG30y1.45766.84284.59−3.450
    HG21x1.45694.93189.151.768
    HG21y1.456425.22389.04−5.824
    HG12x1.45395.13785.891.672
    HG12y1.45346.79787.06−8.065
    HG40x1.45274.35488.852.089
    HG40y1.45234.01588.74−2.916
    HG31x1.45194.70992.051.999
    HG31y1.451410.42190.673.810
    HG03x1.45035.03775.361.989
    HG03y1.449811.70378.29−9.013
    HG22x1.44874.95693.591.924
    HG22y1.448215.79494.47−11.048
    HG50x1.44664.10194.892.184
    HG50y1.44621.624108.82−2.394
    HG41x1.44604.353110.141.893
    HG41y1.44562.60194.4915.396
    HG13x1.44534.811105.193.261
    HG13y1.4448110.30
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出版历程
  • 收稿日期:  2022-04-12
  • 录用日期:  2022-06-23
  • 修回日期:  2022-06-13
  • 网络出版日期:  2022-06-27

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