Water-resistant saturable absorber, preparation method thereof and all-fiber laser applying water-resistant saturable absorber

The invention provides a water-resistant saturable absorber, a preparation method thereof and an all-fiber laser applying the water-resistant saturable absorber. The water-resistant saturable body comprises two optical fiber connectors and a film, the two optical fiber connectors are coaxially arranged, the film is located between the two optical fiber connectors, the film is prepared from a nanometer material and a polymer, and the polymer comprises styrene-methyl methacrylate. The water-resistant saturable absorber, the preparation method of the water-resistant saturable absorber and the all-fiber laser applying the water-resistant saturable absorber have the advantages of being good in water resistance, stable in performance, convenient to prepare and high in compatibility. 本发明提供了一种耐水型可饱和吸收体及其制备方法以及应用的全光纤激光器。耐水型可饱和体包括：同轴设置的两个光纤连接器，以及薄膜，位于所述两个光纤连接器之间，且所述薄膜由纳米材料和聚合物制备而成，所述聚合物包括苯乙烯-甲基丙烯酸甲酯。本发明的耐水型可饱和吸收体及其制备方法和应用的全光纤激光器，具有耐水性好、性能稳定的优势，并且便于制备、兼容性高。