Water-cooled packaging structure of optical fiber beam combiner

Abstract

The invention discloses a water-cooled packaging structure of an optical fiber beam combiner. The water-cooled packaging structure comprises a sealing box body, a beam combiner optical fiber and a substrate. An optical fiber inlet and an optical fiber outlet are formed in the opposite side faces of the sealing box body. The beam combiner optical fiber is fixed to the substrate through optical cement. The substrate is then fixed in the sealing box body through optical cement. A liquid inlet and a liquid outlet are further formed in the sealing box body and connected with a water circulating device. The sintered portion of the beam combiner optical fiber is soaked in circulated water. By means of the water-cooled packaging structure, energy can be prevented from being accumulated on the beam combiner, it is ensured that the beam combiner works under a good working state, and then work stability of the beam combiner is improved.

Description

technical field [0001] The invention relates to the package of an optical fiber combiner, in particular to a water-cooled package structure of a high-power optical fiber combiner. Background technique [0002] With the rapid development and maturity of fiber laser technology, the characteristics and advantages of fiber laser have been gradually recognized by people. Fiber laser has been widely used in national defense, industrial processing, medical and other fields, and the market demand and application are increasing year by year. , which is bound to create a large demand for fiber combiners. [0003] Fiber combiner is one of the core components of high-power fiber lasers. It is currently the most effective pump coupling device. It can efficiently couple the energy of multiple lasers into one optical fiber for transmission. The power used is generally tens of watts, Hundreds of watts or even kilowatts, such a high-power operation, puts forward high standards for the relia...

AI Technical Summary

Problems solved by technology

[0004] The high-power beam combiner must be cooled when it is used. The cooling method commonly used in the industry is the external cooling method, which is to isolate the fiber part of the beam combiner from the outside world, and the heat generated by the optical fiber is conducted to the outer sealing box of the beam combiner. Then dissipate heat from the box body. This method has low heat conduction efficiency and has the problem of poor heat dissipation.

According to statistics, about 70% of the input power of the fiber laser will be consumed as heat. If the heat is not dissipated as soon as possible, it will directly affect the maximum working power of the device, and even burn out the entire fiber laser.

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