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LP01 to LP11 mode convertor based on side-polished small-core single-mode fiber

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Abstract

An all-fiber LP01-LP11 mode convertor based on side-polished small-core single-mode fibers (SMFs) is numerically demonstrated. The linearly polarized incident beam in one arm experiences π shift through a fiber half waveplate, and the side-polished parts merge into an equivalent twin-core fiber (TCF) which spatially shapes the incident LP01 modes to the LP11 mode supported by the step-index few-mode fiber (FMF). Optimum conditions for the highest conversion efficiency are investigated using the beam propagation method (BPM) with an approximate efficiency as high as 96.7%. The proposed scheme can operate within a wide wavelength range from 1.3 μm to1.7 μm with overall conversion efficiency greater than 95%. The effective mode area and coupling loss are also characterized in detail by finite element method (FEM).

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Authors and Affiliations

  1. Key Lab of All Optical Network & Advanced Telecommunication Network, Ministry of Education, Beijing Jiaotong University, Beijing, 100044, China

    Yan Liu  (刘艳), Yang Li  (李阳) & Wei-dong Li  (李卫东)

  2. Institute of Lightwave Technology, Beijing Jiaotong University, Beijing, 100044, China

    Yan Liu  (刘艳)

Authors
  1. Yan Liu  (刘艳)
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  2. Yang Li  (李阳)
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  3. Wei-dong Li  (李卫东)
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Corresponding author

Correspondence to Yan Liu  (刘艳).

Additional information

This work has been supported by the Fundamental Research Funds for the Central Universities (No.2016JBM002).

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Liu, Y., Li, Y. & Li, Wd. LP01 to LP11 mode convertor based on side-polished small-core single-mode fiber. Optoelectron. Lett. 14, 88–91 (2018). https://doi.org/10.1007/s11801-018-7234-7

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  • DOI: https://doi.org/10.1007/s11801-018-7234-7

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