▎ 摘　　要

We reported on the rogue wave generation in a passively mode-locked fiber laser by utilizing a graphene-decorated microfiber photonic device (GMPD). The GMPD, which simultaneously possesses highly nonlinear and saturable absorption effects, provides the suitable condition for investigating rogue waves. With the proper pump power, the localized noise-like multi-pulse wave packet could be easily generated from the proposed fiber laser, which leads to generation of high-contrast fast intensity fluctuations of ultrashort pulse events, namely, rogue waves. Our findings indicate that the graphene-deposited microfiber waveguide structure indeed could be an excellent highly nonlinear photonic device for observing nonlinear dynamics such as rogue waves in optical systems.