A method and system for on-line drawing and preparation of distributed side-pumped coupling optical fiber

Abstract

The invention relates to a method and system for preparing distributed side-pumped coupled optical fibers, in particular to a method and system for on-line drawing and preparation of distributed side-pumped coupled optical fibers, and solves the requirement of environmental cleanliness during preparation by the existing method. high, the process is complex, the production efficiency is low, the optical fiber is easy to break and there is a risk of heating and burning. The method includes the following steps: Step 1: Calculate the required dimensions of the pump fiber preform and the gain fiber preform; Step 2: Prepare the gain fiber preform and the pump fiber preform; Step 3: Place the gain fiber preform and the pump fiber preform The pump optical fiber preform is arranged in the center of the gain optical fiber preform and the pump optical fiber preform is evenly distributed around, one end is welded to the quartz handle bar, and the other end is welded to the counterweight quartz block to make the preform assembly; step 4: heating the preform assembly and turning it around to obtain an optical fiber slug; step 5: coating the optical fiber slug after passing through the limiting mold; step 6: curing.

Description

technical field [0001] The invention relates to a preparation method and system for a distributed side pump coupling optical fiber, in particular to an online drawing preparation method and system for a distributed side pump coupling optical fiber. Background technique [0002] Among the pump light coupling technologies of existing fiber lasers, end-pumping technology and side-pumping technology are commonly used. Among them, the end pumping technology refers to the coupling of one or more beams of pump light into the end face of the fiber; the side pumping technology refers to the coupling of the pump light to one side of the fiber, and then to the outer cladding of the fiber through a coupler. [0003] At present, high-power fiber lasers play an important role in industrial processing and other fields, and the coupling method of pump light is the bottleneck restricting the development of high-power fiber lasers. In high-power fiber lasers, there are two common pumping met...

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Problems solved by technology

[0006] The purpose of the present invention is to provide an online drawing preparation method and system for distributed side-pumped coupling optical fibers, so as to solve the problem of high environmental cleanliness when using existing preparation methods to prepare distributed side-pumped coupling optical fibers. Complexity, low production efficiency, prone to fiber breakage, and technical problems such as the risk of severe heat and burnout due to incomplete stripping of the coating layer

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