Multidimensional adjusting device for stimulated Brillouin scattering of fiber grating or fiber

Abstract

The invention relates to a multidimensional adjusting device for stimulated Brillouin scattering of a fiber grating or a fiber, belonging to the technical fields of fiber lasers, fiber amplifiers and fiber gratings. The multidimensional adjusting device comprises an open box 1, a spring steel threaded pipe 2 and 2-50 adjusting screws, wherein the fiber grating or the fiber is arranged in a spiralgroove on an inner lateral surface of the spring steel threaded pipe 2, one end of the spring steel threaded pipe 2 is arranged on a bottom surface in the open box 1, and the outer lateral surface ofthe spring steel threaded pipe is tangential and in movable fit with the inner wall of the open box 1; 2-50 adjusting screws are connected in 2-50 threaded holes on the wall of the open box 1; and part or all of the 2-50 adjusting screws are adjusted to apply force to the outer lateral surface of the spring steel threaded pipe 2 to realize the purpose of multidimensional adjustment of the stimulated Brillouin scattering of the fiber grating or the fiber. The device does not damage the fiber or the grating, cools the fiber grating or the fiber when water is filled in the open box, and has the advantage of multidimensional adjustment.

Description

technical field [0001] The invention relates to a multidimensional adjustment device for optical fiber grating or optical fiber stimulated Brillouin scattering, and belongs to the technical fields of optical fiber laser, optical fiber amplifier and optical fiber grating. Background technique [0002] Under intense laser irradiation in the blue or ultraviolet spectral regions, the optical properties of silica fibers can be permanently changed. Using this photosensitive effect can produce periodic changes in the longitudinal refractive index along the fiber, thereby forming a fiber grating. [0003] After adding an appropriate optical feedback mechanism in the fiber amplifier cavity, any optical amplifier can be converted into a laser, which is called a fiber laser. A fiber laser that uses a fiber grating as an optical feedback mechanism is called a fiber grating laser. [0004] Although IPG has launched a 3 kW broadband near-diffraction-limited commercial single-mode fiber ...

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Problems solved by technology

[0007] In order to overcome the disadvantages of the existing adjustment device being complicated, and the optical fiber cannot be reused, and the adjustment is one-dimensional adjustment, the present invention provides a multi-dimensional adjustment device for adjusting the stimulated Brillouin scattering of fiber grating or optical fiber

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