Nonlinear light generation in optical fibers is an indispensable tool for generating light to access wavelengths away of the fundamental laser lines broadening the field of applications in biophotonics, metrology, and communications. However, most multi-wavelength sources rely on glass fibers which are static in their material properties after fabrication, thus post-tuning their properties is impossible. Complementary to the pressure-adjustable gas-filled hollow-core fibers in the high power laser regime , liquid-core fibers (LCF) offer a versatile platform for tunable nonlinear light generation and pulse control in the low- to medium-power regime. Recently, we demonstrated accurate control of the soliton fission process via temperature due to the large thermo-optical coefficient of the core liquid . However, those experiments were performed with rather cost-intensive thulium laser technology.
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