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<p>This paper presents novel multicore fibers with broadband emission in the 1.4–2.1&#xa0;μm range. Based on our previous work with barium gallo-germanate glasses and fibers, the 4 and 11-core fiber structures, each containing core glasses doped with Er<sup>3+</sup> and Yb<sup>3+</sup>/Tm<sup>3+</sup>/Ho<sup>3+,</sup> were developed. Our efforts have resulted in flat emission in 3 dB and 10 dB bands, achievable under excitation at 796&#xa0;nm, 808&#xa0;nm, 940&#xa0;nm, and 980&#xa0;nm. The measured emission spectra of these fibers are described as a superposition of emission bands from each individual core, corresponding to the transitions of Er<sup>3+</sup>, Tm<sup>3+</sup>, and Ho<sup>3+</sup> ions. Our method demonstrates the potential of emission profiling in multicore optical fibers as a new way to construct eye-safe broadband fiber sources.</p>

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Ultrabroadband near-infrared emission profiling in multicore optical fibers doped with Er3+ and Yb3+/Tm3+/Ho3+ ions

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年2月4日

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  • Jakub Markiewicz,
  • Marcin Kochanowicz,
  • Tomasz Ragiń,
  • Piotr Miluski,
  • Wojciech A. Pisarski,
  • Joanna Pisarska,
  • Marta Kuwik,
  • Dominik Dorosz,
  • Martin Leich,
  • Matthias Jäger

摘要

This paper presents novel multicore fibers with broadband emission in the 1.4–2.1 μm range. Based on our previous work with barium gallo-germanate glasses and fibers, the 4 and 11-core fiber structures, each containing core glasses doped with Er3+ and Yb3+/Tm3+/Ho3+, were developed. Our efforts have resulted in flat emission in 3 dB and 10 dB bands, achievable under excitation at 796 nm, 808 nm, 940 nm, and 980 nm. The measured emission spectra of these fibers are described as a superposition of emission bands from each individual core, corresponding to the transitions of Er3+, Tm3+, and Ho3+ ions. Our method demonstrates the potential of emission profiling in multicore optical fibers as a new way to construct eye-safe broadband fiber sources.