High-power optical fiber beam combiner suitable for thermal vacuum environment

Abstract

The invention discloses a high-power optical fiber beam combiner suitable for a thermal vacuum environment, comprising a heat sink layer, a micro metal ball, an input optical fiber, a heat conductionmedium, a packaging box, an output optical fiber and the like. The input optical fiber and the output optical fiber are connected in a fused biconical mode to form a connector with a conical area, theconnector is arranged in the packaging box, the heat sink layer is arranged on the inner periphery of the packaging box, the heat conduction medium is arranged on the periphery of the conical area, and the micro metal ball is tightly filled between the heat sink layer and the heat conduction medium. Under a thermal vacuum environment, after high-power pumping laser is input, a heat accumulation effect is easily generated in the conical area. The heat conduction medium is arranged outside the conical area, and the micro metal ball is filled outside to conduct the heat to the heat sink layer and the packaging box, so that the normal working temperature of the optical fiber beam combiner is maintained. According to the optical fiber beam combiner in the invention, the optical fiber beam combiner can be ensured to work normally and stably in a thermal vacuum environment, and the optical fiber beam combiner has the advantages of being capable of enhancing the plasticity of the optical fiber beam combiner, being simple in packaging structure, being efficient and uniform in heat conduction and the like.

Description

technical field [0001] The invention relates to the field of optoelectronic devices, in particular to applying heat exchange technology to an optical fiber combiner. It can be applied in thermal vacuum environment, space optical communication, space exploration, aerospace and other fields. Compared with traditional fiber combiners, it solves the problem of device burnout caused by local heat accumulation in a thermal vacuum environment. Background technique [0002] Optical fiber beam combiner, also known as power beam combiner, is generally made of multiple fiber bundles through the fusion tapered method. The main function is to achieve pump light coupling. It is one of the core components of high-power fiber lasers and high-power EDFAs. . The pump light emitted by the fiber laser enters the inner cladding of the double-clad fiber through the beam combiner, and is absorbed by the fiber core to achieve signal light amplification. [0003] Due to the preparation process, d...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of device burnout due to local heat accumulation of high-power optical fiber combiners in a thermal vacuum environment. Based on metal heat conduction technology, an optical fiber combiner structure with high thermal conductivity is designed to achieve uniform heat conduction and stable operation of the optical fiber combiner.

Images