Fiber side-pump power combiner and laser processing system

Abstract

The invention, applicable to the field of power synthesis devices, provides a fiber side-pump power combiner as well as a laser processing system; the fiber side-pump power combiner comprises a composite fiber and a transmission fiber accessed to the composite fiber; both the composite fiber and the transmission fiber are provided with combining parts from which the surface layers are removed; the combining part of the transmission fiber has an internal concave region which is matched with the combining part of the composite fiber; the combining part of the transmission fiber is melted to the combining part of the composite fiber through the internal concave region. Therefore, the fiber core structure of the composite fiber is not changed; the process is simple and is not easy to take in impurities, so that more lights in the transmission fiber can be transmitted into the composite fiber; the reverse isolating degree is high, and comparatively high power can be undertaken, and thus the fiber side-pump power combiner is applicable to various laser processing systems.

Description

technical field [0001] The invention belongs to the field of power combining devices, in particular to an optical fiber side-pump power combining device and a laser processing system. Background technique [0002] The main function of the fiber side-pumped power combiner is to transmit as much energy as possible in the transmission fiber to the composite fiber, and it is required to destroy the original structural properties of the composite fiber as little as possible. There are several main factors to identify the advantages and disadvantages of a power combiner: 1. The efficiency of the energy in the transmission fiber entering the synthetic fiber is the coupling efficiency; 2. The degree to which the synthetic fiber maintains the original characteristics, including the core, cladding, etc. Characteristics; 3. The reverse isolation of the device, that is, the degree to which various reverse lights return to the synthetic fiber and the transmission fiber; 4. The degree to ...

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Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a fiber side-pumped power combiner, which aims to solve the problem that the existing fiber-optic side-pumped power combiner is easy to damage the core structure of the synthesized optical fiber, the process is complicated, and impurities are easily brought in, which is not conducive to the transmission fiber The light in the fiber is transmitted to the synthetic fiber, the reverse isolation is poor, and it is difficult to withstand the problem of high power

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