Multi-wavelength solitons delivered by an evanescent-field device based on polarization-sensitive MoTe2 micro-sheets

Abstract

Multi-wavelength fiber lasers have the advantages of low cost, easy integration withfiber systems, and wide tunable range, which is the key component of dense wavelength divisionmultiplexing (DWDM). 2D MoTe2micro-sheets have drawn lots of researchers' attention due totheir anisotropic layered structure and high optical adsorption. Evanescent-field (EF) deviceshave many applications in multi-wavelength and high-power fiber lasers. The integration ofMoTe2micro-sheets and an EF device is able to combine their advantages. Here, we reporton the experimental observation of multi-wavelength solitons based on EF interaction withpolarization-sensitive MoTe2micro-sheet. Dual-wavelength conventional solitons (CSs) andswitchable dual-wavelength dissipative solitons (DSs) are emitted by the proposed fiber laser.Different solitons can be effectively tuned by optimizing pump power and the state of thepolarization controller. The proposed EF device and fiber laser are convenient and attractive inthe fields of fiber-based sensing, frequency comb spectroscopy, and DWDM