Two-dimensional materials-deposited microfiber as highly-nonlinear photonic device for pulse shaping in a fiber laser

Two-dimensional (2D) materials have emerged as attractive mediums for fabricating versatile optoelectronic devices. Recently, it has been discovered that several types of 2D materials possess both the saturable absorption effect and large nonlinear refractive index, such as graphene, topological insulator (TI), and Molybdenum Disulfide (MoS2). Taking advantage of the unique nonlinear optical properties of the 2D materials, we fabricated highly-nonlinear saturable absorption photonic devices by depositing the 2D materials onto the microfiber. In this talk, we review our recent results on the various types of soliton shaping in fiber lasers by using the microfiber-based 2D materials photonic devices [1-10]. It was found that the mode-locked soliton in fiber lasers could be easily shaped into different soliton patterns, i.e., harmonic mode-locking, dissipative soliton resonance, conventional/structural soliton molecules, localized chaotic multipulse and double-scale soliton clusters. Our findings indicate that the 2D materials-deposited microfiber could operate as a promising highly-nonlinear photonic device for the related nonlinear optics applications.