Supercontinuum generation in a graded-index multimode tellurite fiber
Ekaterina Krutova, Lauri Salmela, Zahra Eslami, Tanvi Karpate, Mariusz Klimczak, Ryszard Buczyński, Goëry Genty
Abstract
We report the generation of a broadband supercontinuum (SC) from 790 to 2900 nm in a tellurite graded-index (GRIN) 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.
Topics & Concepts
SupercontinuumMulti-mode optical fiberOpticsMaterials scienceDispersion (optics)Core (optical fiber)BroadbandSingle-mode optical fiberPhotonic-crystal fiberFiberNonlinear Schrödinger equationOptical fiberRefractive indexNonlinear systemPhysicsQuantum mechanicsComposite materialPhotonic Crystal and Fiber OpticsAdvanced Fiber Laser TechnologiesAdvanced Fiber Optic Sensors