Method and device for optical fiber fusion splicing

Abstract

In an embodiment, the application provides a fiber welding method, comprising the steps of: employing a welding machine to align fiber claddings; after aligning the fiber claddings, fixing any fiber, selecting another fiber to scan the cross section axis of the cross section of the fixed fiber, and adjusting a fiber position according to scanning results; and welding the fiber after position adjustment. The method realizes fiber core alignment by scanning fiber end faces, reduces high-order mode generation opportunities, and reduces the influence caused by fiber different batches.

Description

technical field [0001] The present application relates to the field of optical fiber technology, in particular to an optical fiber fusion splicing method and an optical fiber fusion splicing device. Background technique [0002] With the development of laser technology, material processing has entered the era of laser processing, in which fiber lasers have won extensive market attention for their superior beam quality and large output optical power. In fiber lasers, high-power lasers place extremely high requirements on the quality of fiber fusion points. Core mismatch or other flaws at the fiber splice will cause local heating, and even cause the splice to burn out or damage the optical components in the fiber laser system due to light reflection. [0003] The current heating methods used in optical fiber fusion splicing equipment are: electrode discharge heating, graphite burner heating, and carbon dioxide laser heating. The alignment methods are: core alignment and cladd...

AI Technical Summary

Problems solved by technology

However, all these methods still cannot achieve high-quality core alignment fusion splicing of active optical fibers and active optical fibers or passive optical fibers. The reason is that each different optical fiber manufacturer, different models of the same manufacturer, and different In the batch, the fiber core has different levels of centrifugal offset relative to the inner cladding, that is, the fiber core is eccentric. When we align the cladding method, the fiber core will be misaligned, resulting in the optical transmission of the fiber after splicing. Serious loss

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