A kind of preparation device and method of thick waist tapered optical fiber

Abstract

The invention is applicable to the technical field of optical fiber preparation, and provides a device and a method for preparing a thick-waist tapered optical fiber. The device for preparing a thick-waist tapered optical fiber comprises a CO2 laser control terminal, a CO2 laser, a scanning galvanometer, two electric platforms, an electric platform control terminal, and two optical fiber aligning and clamping devices. In the process of preparing a thick-waist tapered optical fiber, two optical fibers to be fusion-welded are locally heated and melted by a CO2 laser heating method, and the heating time and the laser power can be adjusted in real time. During CO2 laser heating, the two electric platforms push the two optical fibers to move to each other and be fusion-welded into a thick-waist tapered optical fiber, and the dimension and the geometrical shape of the thick-waist taper can be controlled in real time through the pushing speed and distance. The optical fiber end melting and fusion-welding processes are controlled by a computer. The design is flexible, the operation is simple, and the repeatability is high.

Description

technical field [0001] The invention belongs to the technical field of optical fiber preparation, and in particular relates to a preparation device and method for a thick waist-taper optical fiber. Background technique [0002] The thick waist cone of optical fiber refers to the fiber cone with the increased diameter of the waist cone formed by the excessive overlapping of two optical fibers. The diameter of the waist cone changes according to the parabolic trajectory. The diameter is gradually increased, which obviously enhances the mechanical strength of the cone waist. Not only is the structure novel and compact, the cost is low, but also the mechanical strength is high and the operation is convenient. The thick waist cone of the fiber can excite the cladding mode in the fiber, so that energy coupling occurs between different modes. The thick waist-cone structure of the fiber can adjust the energy of the excited cladding mode to realize the adjustment of the energy coupl...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a preparation device for a thick waist cone optical fiber, which aims to solve the problem of high technical requirements, difficult operation, poor repeatability and inability to control the optical fiber in real time in the process of preparing the thick waist cone of the optical fiber in the prior art. The problem with the size of the thick waist cone

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