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Fiber head protection device for high-power fiber laser and temperature performance optimization method

A fiber laser and protection device technology, applied in the field of lasers, can solve problems such as burnout and difficult replacement of optical fibers, and achieve the effect of avoiding burnout

Inactive Publication Date: 2019-03-08
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the output fiber head of the high-power fiber laser is not the case. Because of the high power, the situation of burning occurs from time to time, and the output fiber head of the laser is directly connected to the inside of the laser through the fiber. This fiber is difficult to replace.

Method used

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  • Fiber head protection device for high-power fiber laser and temperature performance optimization method
  • Fiber head protection device for high-power fiber laser and temperature performance optimization method
  • Fiber head protection device for high-power fiber laser and temperature performance optimization method

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Experimental program
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Effect test

Embodiment 1

[0031] A high-power fiber laser fiber head protection device, including a protection device, the optical fiber is coupled to the protection device, the protection device places a temperature sensor and an optical switch inside the coupler, and places a power adjustment device at the laser emission end; The receiver in the power adjustment device sends the received temperature signal to the processor, and the processor processes the received signal and stores it in the database in the memory.

[0032] Such as Figure 1 As shown, the receiver in the power adjustment device sends the received temperature signal to the processor, and the processor processes the received signal and stores it in the database in the memory. The current temperature and previous temperature are stored in the database, the device monitors and obtains the sampled temperature, and detects a temperature trigger event, and when the temperature trigger time is detected, the device generates a total power lim...

Embodiment 2

[0038] Such as image 3 A method for optimizing the temperature performance of an optical fiber head is shown, the method comprising the following steps:

[0039] S201 couples the optical fiber to the protection device, and obtains the sampling temperature;

[0040] S202 detects a temperature trigger event;

[0041] S203 generates a total power limit table according to the detection result in S202, according to the current temperature, the previous temperature and the target temperature;

[0042] S204 performs power limit setting for each element according to the total power limit table in S203;

[0043] The S205 maintains the power setting at a high level to prevent damage to the fiber optic head.

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Abstract

The invention relates to the technical field of lasers, in particular to a fiber head protection device for a high-power fiber laser and a temperature performance optimization method. The protection device is characterized in that a temperature sensor and an optical switch are placed inside a coupler, and a power adjustment device is placed at a laser emitting end. The fiber coupling situation canbe judged by the temperature of the coupler. When high power laser leaks out, the temperature of the coupler rises. After a temperature signal is collected by the temperature sensor, the transmittingpower is adjusted automatically, so that the temperature of the device is controlled below a target temperature more precisely, and the fiber head can continue to work. Meanwhile, damage of the fiberhead is avoided. The target temperature is the upper limit temperature of a coupler device. When the temperature of the coupler is too high, the temperature sensor can control the optical switch to turn off a circuit, and a warning is given to an operator to avoid burnout of the fiber head.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a high-power fiber laser fiber head protection device and temperature performance optimization method. Background technique [0002] The connection of the optical fiber needs to be coupled by a fiber coupler, and the common fiber coupler has the form of FC and SC. However, due to the limited manufacturing process level of the coupler, some losses are inevitable. [0003] When the two connected optical fiber heads have axial displacement, connection interval, tilt misalignment, or uneven cross-section, it will cause laser overflow and leakage. The loss of ordinary laser signals will not cause damage to the device, but is generally caused by the loss and instability of the signal. However, if there is a serious overflow and leakage of the fiber head output by the high-power laser during coupling, it will directly cause the fiber head to heat up. Optical fiber heads are usually ma...

Claims

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Application Information

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IPC IPC(8): H01S3/00H01S3/067H01S3/10G02B6/42
CPCH01S3/0014G02B6/4286G02B6/4296G02B2006/4297H01S3/067H01S3/10
Inventor 郝子强王忠塬刘蒙詹伟达唐雁峰李锐
Owner CHANGCHUN UNIV OF SCI & TECH