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June 19, 2026NewtonOpen Access

Tunable supercontinuum in multimode fiber via bending-induced dispersion modification

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Authors

LYLi-Yu YuHCHonghao CaoKLKunzan Liu

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Overview

Randomized trial demonstrates spectral tuning in multimode fibers, indicating improved beam quality for imaging.

Key Points

  • To explore bending-induced dispersion modification in multimode fibers to achieve tunable supercontinuum generation while maintaining beam quality.
  • Launched LP 0,7 mode into a step-index multimode fiber with programmable macrobends.
  • Used a standard Yb pump at 1,030 nm to generate supercontinuum.
  • Developed a perturbative model to explain the shifts in group delay and dispersion.
  • Achieved continuous spectral tuning from 700–1,350 nm while maintaining a Bessel-like output profile.
  • Showed that moderate bending results in first- and second-order shifts in group delay and group-velocity dispersion of the HOM.
  • Validated utility by driving multicolor, extended-depth-of-focus multiphoton microscopy with the generated light.

Cite This Study

Yu et al. (2026) studied this question.

synapsesocial.com/papers/6a34dbc465a5b0777af2c5fdhttps://doi.org/10.1016/j.newton.2026.100562
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