Abstract
Thermal decomposition is a critical challenge for typical single-walled carbon nanotube-polyvinyl alcohol (SWNTs-PVA) composite as mode-locker, restricting its widespread applications in high stability of ultrafast fiber lasers. Herein, we optimized the composite substrate with proper addition of SiO2 composite fabricated by sol–gel method to the PVA. The successful demonstration of this work has shown that fiber laser equipped with the SWNTs composite as mode-locker could achieve stable conventional soliton (CS) with center wavelength of ∼1557±1 nm for long experimental period by operating the fiber laser at temperature up to 400 °C environmental condition.
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