Manufacturing method and package structure of optical fiber stripper

Abstract

The invention provides an optical fiber stripper, a manufacturing method and package structure of the optical fiber stripper. The optical fiber stripper has the advantages such as high stripping efficiency, high withstand power, uniform temperature distribution, long service life, high stability and the like. The package structure of the optical fiber stripper is characterized in that: the opticalfiber stripper is placed in a glass tube to provide preliminary package protection for the optical fiber stripper; and then the glass tube is arranged in an accommodating cavity surrounded by a heatconducting cover plate and a heat conducting bottom plate to perform thermal conductive packaging on the optical fiber stripper; therefore, on one hand, the package structure is conveniently installedon a water-cooled plate of an external water-cooling device, the heat emitted by the optical fiber stripper is uniformly transmitted to the water-cooled plate, and then the heat is taken away by thewater-cooling device; on the other hand, the thermal conductive packaging of the optical fiber stripper can prevent the stripped light from leaking into an optical path module; therefore, the damage of the stripped light to the optical path is avoided, the stability and working efficiency of the optical fiber stripper is greatly improved, and the stability of an entire optical fiber laser system is maintained.

Description

technical field [0001] The invention relates to the fields of laser technology and optical fiber technology, in particular to a method for manufacturing an optical fiber mold stripper and its packaging structure. Background technique [0002] Fiber stripper CPS is an important part of fiber laser, used to strip the laser in the inner cladding of the fiber. The pump source LD couples the pump light into the inner cladding of the active fiber through the pump beam combiner, provides energy for the active fiber, generates signal light in the fiber core, and then passes through the resonator feedback mode selection amplification, and then outputs it. However, due to the limited length of the active fiber, the pump light in the cladding cannot be completely absorbed, and part of the pump light in the cladding exists in the form of helical light. Therefore, the cladding contains pump light. In addition, due to the imperfection of the fiber splicing and the defects of the fiber it...

AI Technical Summary

Problems solved by technology

Secondly, the organic glue with a high refractive index is an organic polymer. If it works at high temperature for a long time, the organic glue will deteriorate, resulting in increased light absorption and a further rise in temperature, which may eventually cause damage to the optical fiber stripper and seriously affect the high-quality optical fiber. Power Fiber Laser Stability

[0004] In addition, the existing technology only processes the optical fiber to make a fiber stripper, so that the cladding light can leak out, but does not effectively package the fiber stripper

Since the fiber stripper is used to strip the cladding light, a large amount of laser light will leak out from the surface of the fiber stripper, especially as the output power of the fiber laser increases, the laser energy density and temperature on the surface of the fiber stripper are very high , generate a lot of heat, once it reaches the melting point, it is easy to burn out the fiber stripper itself

A large amount of leaked laser light diffuses in the fiber laser optical path module, which can easily cause optical components to be damaged by the leaked laser light

In addition, since the optical fiber stripper accumulates a large amount of energy, the temperature is very high. If it cannot be disposed of properly, the heat will spread to the optical module of the fiber laser, causing the temperature of the optical module to rise and affecting the stability of the fiber laser system.

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