Polarization-maintaining fiber pumping combiner and manufacturing device and method thereof

Abstract

The present invention relates to the field of fiber lasers, in particular to a polarization-maintaining fiber pumping combiner and a manufacturing device and method thereof. The polarization-maintaining fiber pumping combiner comprises a polarization-maintaining fiber 1 as a signal input channel, pumping fibers 2 and an output fiber. The polarization-maintaining fiber pumping combiner is characterized in that: the polarization-maintaining fiber pumping combiner further comprises a polarization-maintaining fiber-switching fiber 4; the polarization-maintaining fiber-switching fiber 4 is mode-matched through a mode matching section 3 of the polarization-maintaining fiber-switching fiber 4 with the polarization-maintaining fiber 1 as the signal input channel; the core diameter of one end of the mode matching section 3 is the same as the core diameter of the polarization-maintaining fiber 1; and a plurality of pump fibers 2 are evenly arranged outside the welded polarization-maintaining fiber 1. According to the technical scheme of the present invention, the problems that the existing pump combiner has a low power, the stress hole is easy to be damaged, and the environment is polluted during processing can be solved.

Description

technical field [0001] The invention relates to the field of fiber lasers, in particular to a polarization-maintaining fiber pump beam combiner and a manufacturing device and method thereof. Background technique [0002] At present, all-fiber lasers composed of optical fiber devices, optical fibers, and LD components have been widely used in various laser processing, medical and other industries, and users' demand for high-power lasers is also increasing day by day. Generally speaking, the laser light of a laser is converted from pump light. If the pump channel is too small, high-power laser light cannot be obtained, and there is a threshold value in the process of transmitting laser light per unit area of ​​quartz, so the pump The larger the fiber and core area, the higher the power that can be transmitted. [0003] In the prior art, it is more common to manufacture high-power pump fiber combiners with non-PM fiber as the core, and PM fiber lasers have better application v...

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Problems solved by technology

[0004] In order to solve the problems in the prior art, the stress hole is easily damaged, the environment is polluted during processing, and the power has bottlenecks, a new type of polarization-maintaining pump beam combiner and its production equipment and manufacturing method are proposed.

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