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A kind of method for preparing optical fiber cladding optical filter based on electroless ni-p method

An optical fiber cladding and chemical plating technology, applied in the laser field, can solve the problems of limiting the performance of the cladding light filter, difficult to stabilize the cladding light filtering, and the temperature of the light guide glue is too high, so as to overcome the burning or falling off, the coating Good quality and improved service life

Active Publication Date: 2022-03-25
NAT INNOVATION INST OF DEFENSE TECH PLA ACAD OF MILITARY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, when the optical power of the filter prepared by this method is high, the temperature of the light-guiding glue on the surface of the optical fiber cladding will be too high, and the phenomenon of burning will occur.
Some scholars use the hydrofluoric acid segmental etching method to strip the cladding light. However, in the application, due to the change of the cladding structure, a large amount of light will leak at the front end of the filter, and hot spots will be formed locally, which is difficult to stabilize. The cladding light is filtered out, which greatly limits the performance improvement of the cladding light filter

Method used

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  • A kind of method for preparing optical fiber cladding optical filter based on electroless ni-p method
  • A kind of method for preparing optical fiber cladding optical filter based on electroless ni-p method
  • A kind of method for preparing optical fiber cladding optical filter based on electroless ni-p method

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Experimental program
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Effect test

Embodiment 1

[0042] as per figure 1 The process shown in the preparation of optical fiber cladding optical filter, the specific steps are as follows:

[0043]S1. Take an optical fiber with a length of 2m, soak a 20cm-long section of the middle part of the optical fiber in acetone for 15min, and then wash it with concentrated H 2 SO 4 Soak for 1 minute to remove the coating layer, and then wash it with 95% alcohol for 5 minutes to obtain a section of optical fiber from which the coating layer has been removed;

[0044] S2: Optical fiber degreasing: Remove the coated optical fiber from this section and soak it in 40g / L NaOH solution for 15 minutes to degrease and decontaminate. Finally, wash it once with 95% alcohol and dry it for later use;

[0045] S3. Prepare sensitization solution and activation solution, the composition of sensitization solution is SnCl 2 15g / L, 37% HCl 30ml / L, the activation solution is PdCl 2 0.5g / L, 37% HCl 5ml / L, heat the sensitizing solution to 25°C, and heat...

Embodiment 2

[0053] Embodiment 2 Performance detection of optical fiber cladding optical filter

[0054] The optical fiber with the optical fiber cladding optical filter prepared in embodiment 1 and the 200W LD pumping light source and the 7×1 beam combiner device are as follows image 3 For the connection shown, use a 300W power meter to detect the output power of the laser after being processed by the fiber cladding optical filter. During the test, the laser light generated by the LD is coupled by the beam combiner device, enters the optical fiber with the optical fiber cladding filter, and finally enters the power meter. During the test, the surface temperature of the chemically plated Ni-P part of the optical fiber is monitored by an infrared thermal imager. When the test is selected when the surface temperature is 100°C, the passing power of the chemically plated Ni-P fiber is recorded, and the pumping power of the chemically plated Ni-P fiber is calculated. light transmission rate. ...

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Abstract

The invention provides a method for preparing an optical fiber cladding optical filter based on an electroless Ni-P plating method. The metal Ni-P coating is prepared by electroless Ni-P plating technology on the surface of the optical fiber from which the coating layer has been removed. The main components of the electroless Ni-P solution include citric acid 8-10g, lactic acid 20-30ml, nickel sulfate 25-30g, sodium hypophosphite 25-30g, stabilizer amount, sodium acetate 6-8g, succinic acid 10-12g . The metal Ni-P coating prepared by the invention has good quality and is evenly deposited on the surface of the optical fiber from which the coating has been removed. Since metal Ni‑P is a good conductor in nature. Therefore, the method provided by the present invention overcomes the problem that a large amount of cladding light leaks from the traditional cladding light filter, causing the local temperature to rise rapidly and burn out, so that the overall temperature distribution of the cladding light filter can be evenly stripped. The cladding is light, while having higher corrosion resistance and hardness.

Description

technical field [0001] The invention belongs to the technical field of lasers, and relates to a method for an optical fiber cladding optical filter, in particular to a method for preparing an optical fiber cladding optical filter based on an electroless Ni-P plating method. Background technique [0002] With the wide application of laser technology in the industrial field, the power of lasers is also increasing. At the same time, higher requirements are put forward for the laser beam quality and the stability of the system. For high-power output fiber lasers, too long gain fibers cannot be prepared due to nonlinear effects, resulting in a part of the pump light remaining in the inner cladding of the fiber, and as the output power of the laser increases, the remaining pump light power will also increase; At the same time, due to the fusion and bending of the optical fiber, some signal light will leak into the inner cladding of the optical fiber. If the residual light is tran...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/36C23C18/18H01S3/067
CPCC23C18/36C23C18/1893H01S3/067
Inventor 胡振峰宋启良梁秀兵孔令超金国刘二宝涂龙崔辛陈永雄罗晓亮王浩旭胡海韵王荣
Owner NAT INNOVATION INST OF DEFENSE TECH PLA ACAD OF MILITARY SCI
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