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Supercontinuum Generation in a Graded-Index Multimode Tellurite Fiber

Optics Letters
  • Ekaterina Krutova, lauri SALMELA, Zahra Eslami, Tanvi Karpate, Mariusz Klimczak, Ryszard Buczynski, and Goëry Genty
  • received 02/14/2024; accepted 04/08/2024; posted 04/08/2024; Doc. ID 521639
  • Abstract: We report a near two-octave spanning supercontinuum (SC) from 790 nm to 2900 nm in a nanostructured tellurite graded-index multimode fiber with a nanostructured core. We study the SC dynamics in different dispersion regimes and observe near-single mode spatial intensity distribution at high input energy values. Numerical simulations of the (3+1)D generalized nonlinear Schrödinger equation are in good agreement with our experiments. Our results open a new avenue for the generation of high-power mid-infrared SC sources in soft glass fibers.