Fabrication and optical properties of Tm3+/Al3+ co-doped photonic crystal fiber based on CO2 laser sintering technology

Abstract In this paper, a double-cladding Tm3+/Al3+ co-doped photonic crystal fiber (PCF) is fabricated with stacking and drawing technology based on laser sintering technology (LST) for the first time. The absorption, emission and loss properties of glass and fiber are studied experimentally, and the laser performances of fiber with different lengths are analyzed. The results demonstrate that Tm3+/Al3+ co-doped large-mode-area PCF fabricated based on laser sintering technology is potential materials for developing 2 μm high power fiber laser.