OPTICAL FIBER MODE STRIPPER, OPTICAL FIBER MODE STRIPPER PREPARATION METHOD, AND LASER

An optical fiber mode stripper, an optical fiber mode stripper preparation method, and a laser. The optical fiber mode stripper comprises: an optical fiber (100) and a filler (200); the optical fiber (100) is provided with a waveguide damage area (140) extending along the length direction of the optical fiber; the optical fiber in the waveguide damage area (140) comprises a fiber core (110) and a cladding layer (120); the cladding layer (120) has provided thereon a plurality of recessed structures (150) arranged at intervals along the length direction of the optical fiber and/or arranged at intervals around the circumference of the cladding layer; and the filler (200) fills the recessed structures (150), and the refractive index of the filler (200) is greater than the refractive index of the cladding layer (120). L'invention concerne un dénudeur de mode de fibre optique, un procédé de préparation de dénudeur de mode de fibre optique et un laser. Le dénudeur de mode de fibre optique comprend : une fibre optiqu