Method for replacing industrial-grade operation optical fiber

Abstract

The invention discloses a method for replacing an industrial-grade operation optical fiber. The method comprises the steps of selecting an operation optical fiber needing to be replaced, connecting an operation optical fiber needing to be used with an optical shutter, using a pentaprism to assist in adjusting the optical shutter, adjusting an optical shutter collimating mirror according to an interference fringe pattern observed in a real-time monitoring structure, and carrying out optical path safety monitoring. According to the method, a single output optical fiber of one optical fiber laser can be conveniently replaced by a plurality of operation optical fibers, sub-channel output of 30,000-watt-level laser power can be realized, system components can be quickly assembled and adjusted, and the use safety of the system is ensured.

Description

technical field [0001] The invention belongs to the field of high-power laser equipment, in particular to a replacement method for industrial-grade operating optical fibers. Background technique [0002] Laser manufacturing has been widely used in material cutting, welding, cladding and other fields, and has become an important choice for modern industrial processing methods. As one of the light sources for laser manufacturing, fiber lasers have outstanding advantages in terms of output power, beam quality, processing speed, and conversion efficiency compared to other types of lasers. In laser manufacturing, the optical fiber that is controlled by the robot arm and interacts with the processed material in real time is called the operating fiber, such as the output fiber of the fiber laser. However, in the process of material processing, factors such as material splash, dust, and return light will bring safety hazards to the operating optical fiber and easily damage the oper...

AI Technical Summary

Problems solved by technology

However, in the continuous long-term working state, the optical components in the coupling system will have a series of safety hazards

This is mainly due to two aspects. First, the optical element will absorb part of the laser energy and the temperature will rise, resulting in thermal expansion, which will cause the optical axis to shift. Once the shift reaches tens of microns, a large amount of laser light cannot be coupled into the laser. Transmitted in the core of the operating fiber, the leaked laser power may be as high as thousands of watts, which is very easy to burn the operating fiber

Second, in the process of use, environmental temperature, humidity, vibration and other factors will affect the stability of the system. Once the system components change, there will be a large offset error in the optical path, thereby reducing the coupling efficiency of the system, resulting in a large number of lasers. vent

In short, the change of optical path will bring huge security risks

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