Pulse Scalability in All-Fiber Energy-Managed Soliton Laser

The <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$1.5-\mu \mathrm{m}$</tex> wavelength band is a low-loss region for SiO<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf>, serving as a communication window for fiber optic networks and falling within the eye-safe range. Therefore, pulsed lasers operating at this wavelength play a significant role in applications such as ranging and fiber optic communication. In 2024, we introduced the concept of energy-managed solitons, which allows surpassing the conventional soliton energy in fiber lasers employing exclusively anomalous dispersion as well as featuring extended laser output flexibility [1], [2]. Whereas the original work employed a cavity architecture including a free-space optics section and multi-W pumping power [1], [2], the present work elucidates the pulse-energy scalability within a simple and compact all-fiber cavity structure under lower pumping power (100–200 mW).