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All-solid bend-resistant large mode area fiber design with highly doped rods in the cladding

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Abstract

An all-solid bend-resistant large mode area fiber with six uniform-sized highly doped rods in the cladding is proposed. The uniform-sized highly doped rods play the same role as the segmented cladding and can provide effective coupling with high-order modes (HOMs). In the meanwhile, the fundamental mode (FM) can be well confined with a bending loss as low as 0.00073 dB/m at a tight radius of 10 cm. Numerical results indicate that the fiber can achieve a robust single-mode operation with a HOM to FM loss ratio as high as 52,431. Even though under a heat load of 55 W/m, the robust single-mode operation with an effective mode area higher than 1446 µm2 can still be maintained at the bending radius of 10 cm.

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Data availability

The data that support the plots within this paper and other findings of this study are available from the corresponding authors upon reasonable request.

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Funding

This work is supported by National Natural Science Foundation of China (No.62205014).

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Authors and Affiliations

  1. Beijing Key Laboratories of Communication and Information System, School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, 100044, China

    Feifan Ding, Shuqin Lou, Wei Gao & Xin Wang

  2. Yangtze Optical Electronic (China), Wuhan, China

    Zhenggang Lian

Authors
  1. Feifan Ding
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  2. Shuqin Lou
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  3. Wei Gao
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  4. Zhenggang Lian
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  5. Xin Wang
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Contributions

A wrote the main manuscript and simulated data. B and D provide theoretical research guidance for the bending resistance of large mode area fiber. C prepared Figs. 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 and E provides a simulation platform. All authors reviewed the manuscript.

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Correspondence to Xin Wang.

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Ding, F., Lou, S., Gao, W. et al. All-solid bend-resistant large mode area fiber design with highly doped rods in the cladding. Opt Quant Electron 56, 381 (2024). https://doi.org/10.1007/s11082-023-06118-4

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