Rare earth element doping modification process for electroplated layer of optical module

Abstract

The invention discloses a rare earth element doping modification process of an optical module electroplated layer, which belongs to the technical field of optical module manufacturing, and comprises the following steps: sequentially carrying out oil removal, acid pickling and activation treatment on an optical module matrix to form a clean active surface; the preparation method comprises the following steps: taking nickel aminosulfonate or potassium gold cyanide as main salt, adding 0.5-5g / L of rare earth salt which is at least one of cerium chloride, lanthanum nitrate or yttrium sulfate, and adding 5-15g / L of sodium citrate complexing agent and lauryl sodium sulfate surfactant; under the conditions that the pH is 3.5-4.5 and the temperature is 45-55 DEG C, pulse current with the density being 2-5 A / dm < 2 > is adopted for electroplating, the pulse frequency is 100-500 Hz, and the duty ratio is 30-50%; when electroplating deposition is carried out, hydrogen bubbles on the outer side of the optical module are removed through a hydrogen removal device, the hydrogen bubbles are prevented from being attached to the surface of a cathode, and the uniformity of codeposition of rare earth and metal is ensured; and after electroplating is completed, deionized water cleaning and vacuum drying are carried out on the optical module. The high temperature resistance of the surface of the optical module obtained through the technology is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical module manufacturing, and specifically relates to a rare earth element doping modification process for the electroplated layer of an optical module. Background Art

[0002] As a core component of high-speed optical communication, the performance of the electroplated layer of an optical module directly affects the signal transmission efficiency and reliability. In recent years, the doping of rare earth elements has been introduced into the electroplating process to meet the high requirements of optical modules by refining grains, improving corrosion resistance and thermal conductivity. However, rare earth electroplating faces a severe hydrogen bubble problem: since the reduction potential of rare earth ions is extremely negative, far lower than that of conventional metals, the hydrogen evolution reaction dominates, and the current efficiency is less than 30%. Hydrogen bubbles attach to the cathode surface to form a shielding effect, resulting in coating pores, pitting, and even hydrogen embrittlement. At the same time, the rare earth deposition rate is significantly reduced. Existing technologies such as pulse electroplating, organic additives, or mechanical stirring can partially alleviate the problem, but pulse electroplating has limited improvement in rare earth current efficiency, and additives may interfere with rare earth complexation. More complicatedly, the hydrolysis of rare earth salts locally acidifies the electrolyte, further exacerbating the hydrogen evolution reaction. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a rare earth element doping modification process for the electroplated layer of an optical module, which can solve the above technical problems.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] The rare earth element doping modification process for the electroplated layer of the optical module disclosed by the present invention includes the following steps:

[0006] Pretreatment: The optical module substrate is successively degreased, pickled, and activated to form a clean and active surface;

[0007] Electrolyte preparation: Using nickel sulfamate or potassium gold cyanide as the main salt, adding 0.5 - 5 g / L of rare earth salt, the rare earth salt is at least one of cerium chloride, lanthanum nitrate, or yttrium sulfate, and adding 5 - 15 g / L of sodium citrate complexing agent and sodium dodecyl sulfate surfactant;

[0008] Electroplating deposition: At a pH of 3.5 - 4.5 and a temperature of 45 - 55 °C, pulsed current with a density of 2 - 5 A / dm 2 is used for electroplating, the pulse frequency is 100 - 500 Hz, and the duty cycle is 30 - 50%;

[0009] Hydrogen removal: During electroplating deposition, the hydrogen bubbles outside the optical module are removed through a hydrogen removal device to prevent the hydrogen bubbles from attaching to the cathode surface and ensure the uniformity of co - deposition of rare earth and metal;

[0010] Post-treatment: After electroplating, the optical module is cleaned with deionized water and dried in vacuum.

[0011] Further, the hydrogen removal device includes a rotating ring assembly, a radial carriage mounted on the rotating ring assembly, a first pressing roller and a second pressing roller that are rotatably engaged with the radial carriage at the same time, and a rotating driving device for driving the first pressing roller to rotate. At least one group of radial carriages is mounted on the rotating ring assembly. The first pressing roller and the second pressing roller are vertically and parallelly arranged at intervals on one side of the optical module. A number of thorns are provided on the surface of the first pressing roller, and the thorns are spirally arranged on the outer surface of the first pressing roller. Spiral grooves corresponding to the thorns are provided on the second pressing roller; during electroplating deposition, the rotating driving device drives the first pressing roller to rotate, and the hydrogen bubbles are punctured through the cooperation of the thorns and the spiral grooves. Different radial distances are provided between each group of radial carriages and the optical module.

[0012] Further, the first pressing roller is coaxially connected with a first gear, the second pressing roller is coaxially connected with a second gear, and the first gear and the second gear are engaged to drive the second pressing roller to rotate; the rotating driving device includes a third gear, a fourth gear and a first motor. The third gear is coaxially connected to the end of the first pressing roller away from the first gear, the third gear is engaged with the fourth gear, and the fourth gear is connected to the output shaft of the first motor. The first motor is fixed on the radial carriage.

[0013] Further, the rotating ring assembly includes an upper ring, a bottom ring, a ring seat, a fifth gear, a second motor, a guide rod, and a lifting device. The second motor is fixed on the ring seat, the output shaft of the second motor is connected to the fifth gear, the fifth gear is engaged with the tooth ring on the outside of the bottom ring, the bottom ring is rotatably mounted in the ring seat at the same time, the upper end of the bottom ring is fixedly connected with a guide rod, and the guide rod slidably passes through the guide hole provided on the upper ring. A lifting device for driving the upper ring to move up and down is also mounted on the bottom ring.

[0014] Further, a radial chute is provided on the upper surface of the upper ring, the radial carriage is slidably mounted in the chute, a rack is fixed on the side surface of the radial carriage, the rack is engaged with a sixth gear, and the sixth gear is connected to the output end of a third motor. The third motor is fixed on the upper ring.

[0015] Further, a central cylinder is coaxially connected to the center of the upper ring. The central cylinder is arranged outside the optical module, and a number of through holes are provided on the cylinder wall of the central cylinder.

[0016] Further, a toothed ring is coaxially connected to the bottom of the central cylinder. The toothed ring is engaged with a seventh gear. The seventh gear is coaxially connected with an eighth gear through an eccentric shaft. The eighth gear is engaged with a central gear. The central gear is connected to the optical module. The eccentric shaft is connected with a hollow shaft through a gear rack. The hollow shaft is rotatably mounted at the center of the central gear.

[0017] Further, a first ultrasonic transducer is installed on the central gear, and the first ultrasonic transducer provides low-frequency ultrasonic vibration for the optical module and the central cylinder; a second ultrasonic transducer is installed on the radial carriage, and the second ultrasonic transducer provides high-frequency ultrasonic vibration for the radial carriage.

[0018] Further, the second pressure roller is rotatably connected with a rotating seat, and the rotating seat is in radial sliding fit with the radial carriage. By adjusting the position of the rotating seat on the radial sliding seat, the distance between the first pressure roller and the second pressure roller can be adjusted, and the rotating seat and the radial carriage are fixed by a locking member.

[0019] The beneficial effects of the present invention are as follows:

[0020] In the rare earth element doping modification process of the electroplated layer of the optical module disclosed by the present invention, when electroplating and deposition are carried out, the hydrogen bubbles outside the optical module are removed by a hydrogen removal device to prevent the hydrogen bubbles from adhering to the cathode surface, ensuring the uniformity of the co-deposition of rare earth and metal; by directly intervening in the problem of hydrogen bubble adhesion on the cathode surface by the hydrogen removal device, the coating pores or composition segregation caused by bubble shielding in the traditional process are reduced. After testing, the grain size of the surface of the optical module obtained by the process of the present invention can be controlled within 50 - 100 nm, and the high-temperature resistance performance of the surface of the optical module is improved.

[0021] Other advantages, objectives and features of the present invention will be described in the subsequent specification, and to some extent, they are obvious to those skilled in the art, or those skilled in the art can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the following specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the objectives, technical solutions and beneficial effects of the present invention clearer, the present invention provides the following drawings for description:

[0023] Figure 1 is the flow chart of the process of the present invention;

[0024] Figure 2 is the structural schematic diagram of the hydrogen removal device Figure 1 ;

[0025] Figure 3 is the structural schematic diagram of the hydrogen removal device Figure 2 ;

[0026] Figure 4 is the schematic diagram of the cooperation between the first pressure roller and the second pressure roller;

[0027] Figure 5 is the structural schematic diagram of the tooth ring;

[0028] Figure 6 is the structural schematic diagram of the radial carriage.

[0029] The reference signs in the drawings are as follows: rotating ring assembly 1, radial carriage 2, first pressure roller 3, second pressure roller 4, needle 5, spiral groove 6, first gear 7, second gear 8, third gear 9, fourth gear 10, first motor 11, upper ring 12, bottom ring 13, ring seat 14, fifth gear 15, second motor 16, guide rod 17, lifting device 18, sliding groove 19, rack 20, sixth gear 21, third motor 22, central cylinder 23, through hole 24, toothed ring 25, seventh gear 26, eccentric shaft 27, eighth gear 28, central gear 29, optical module 30, gear rack 31, hollow shaft 32, first ultrasonic transducer 33, second ultrasonic transducer 34, rotating seat 35, locking member 36. Detailed implementation mode

[0030] As Figures 1 to 6 shown, the rare earth element doping modification process for the electroplated layer of the optical module 30 disclosed in the present invention includes the following steps:

[0031] Pretreatment: The substrate of the optical module 30 is successively degreased, pickled and activated to form a clean and active surface, which can ensure the electroplating quality with a guaranteed thickness;

[0032] Electrolyte preparation: Using nickel sulfamate or potassium gold cyanide as the main salt, adding 0.5 - 5 g / L of rare earth salt, where the rare earth salt is at least one of cerium chloride, lanthanum nitrate or yttrium sulfate, and adding 5 - 15 g / L of sodium citrate complexing agent and sodium dodecyl sulfate surfactant; By using nickel sulfamate or potassium gold cyanide as the main salt and combining the addition of rare earth salts such as cerium chloride and lanthanum nitrate, the grain size is significantly refined, the surface roughness is reduced, and at the same time, rare earth oxides fill the grain boundary defects, reducing the porosity of the coating, significantly improving the signal transmission efficiency and corrosion resistance of the optical module 30. After testing, the surface grain size of the optical module 30 obtained by this invention process can be controlled within 50 - 100 nm, and the high temperature resistance of the surface of the optical module 30 is improved.

[0033] Electroplating deposition: Under the conditions of pH 3.5 - 4.5 and temperature 45 - 55 °C, electroplating is carried out using a pulsed current with a density of 2 - 5 A / dm 2 ², the pulse frequency is 100 - 500 Hz, and the duty cycle is 30 - 50%; After testing, the number of hydrogen bubbles on the optical module 30 during electroplating is significantly reduced, and the surface performance is significantly improved. By the synergistic effect of using a reasonable pulsed current and an optimized electrolyte formula, both the hydrogen evolution reaction is inhibited and the stability of rare earth ions is maintained, which is applicable to various substrates of the optical module 30.

[0034] Hydrogen removal: During electroplating deposition, hydrogen bubbles outside the optical module 30 are removed by a hydrogen removal device to prevent the hydrogen bubbles from adhering to the cathode surface and ensure the uniformity of the co-deposition of rare earth and metal. By directly intervening in the problem of hydrogen bubble adhesion on the cathode surface through the hydrogen removal device, the coating pores or composition segregation caused by bubble shielding in the traditional process are reduced.

[0035] Post-treatment: After electroplating, the optical module 30 is cleaned with deionized water and vacuum dried.

[0036] In this embodiment, the hydrogen removal device includes a rotating ring assembly 1, a radial carriage 2 mounted on the rotating ring assembly 1, a first pressure roller 3 and a second pressure roller 4 that are rotatably engaged with the radial carriage 2 at the same time, and a rotation driving device for driving the first pressure roller 3 to rotate. At least one group of radial carriages 2 is mounted on the rotating ring assembly 1. The first pressure roller 3 and the second pressure roller 4 are arranged vertically and parallelly at intervals on one side of the optical module 30. A number of thorns 5 are provided on the surface of the first pressure roller 3, and the thorns 5 are spirally arranged on the outer surface of the first pressure roller 3. A spiral groove 6 corresponding to the thorns 5 is provided on the second pressure roller 4. In the present invention, the spiral arrangement of the thorns 5 on the first pressure roller 3 cooperates with the spiral groove 6 on the second pressure roller 4 to form a shear force field, which can directly pierce the hydrogen bubbles outside the optical module 30. The rotating ring assembly 1 can drive the hydrogen removal device to rotate around the product, and can perform a full range of cleaning in the circumferential direction, improving the removal efficiency of hydrogen bubbles.

[0037] During electroplating deposition, the rotation driving device drives the first pressure roller 3 to rotate, and the hydrogen bubbles are pierced through the cooperation of the thorns 5 and the spiral groove 6. Different radial distances are provided between each group of radial carriages 2 and the optical module 30, which can increase the removal range of hydrogen bubbles. In the hydrogen removal device disclosed in the present invention, compared with the traditional mechanical stirring method, the generation of air bubbles can be reduced, and at the same time, the influence of liquid flow on the bubbles is also reduced, improving the removal speed of hydrogen bubbles.

[0038] To avoid the influence of electroplating, most parts of the hydrogen removal device of the present invention are made of special materials, such as polypropylene, titanium alloy or aluminum alloy, etc. At the same time, protective covers made of the above materials are provided on the outside of components such as motors in the present invention, and the output shaft of the motor passes through the protective cover in a sealed manner and is connected to the load.

[0039] In this embodiment, a first gear 7 is coaxially connected to the first pressure roller 3, and a second gear 8 is coaxially connected to the second pressure roller 4. The first gear 7 and the second gear 8 are meshed to drive the second pressure roller 4 to rotate, which can reduce the power source. The rotation driving device includes a third gear 9, a fourth gear 10, and a first motor 11. The third gear 9 is coaxially connected to the end of the first pressure roller 3 away from the first gear 7. The third gear 9 is meshed with the fourth gear 10, and the fourth gear 10 is connected to the output shaft of the first motor 11. The first motor 11 is fixed on the radial carriage 2. Through the combination of the third gear 9, the fourth gear 10, and the first motor 11, efficient power transmission is achieved and the control is more convenient.

[0040] In this embodiment, the rotating ring assembly 1 includes an upper ring 12, a bottom ring 13, a ring seat 14, a fifth gear 15, a second motor 16, a guide rod 17, and a lifting device 18. The second motor 16 is fixed on the ring seat 14. The output shaft of the second motor 16 is connected to the fifth gear 15. The fifth gear 15 is meshed with the tooth ring on the outer side of the bottom ring 13. The bottom ring 13 is rotatably installed in the ring seat 14 at the same time. The ring seat 14 is fixed at the bottom of the electroplating tank. The upper end of the bottom ring 13 is fixedly connected with the guide rod 17. The guide rod 17 slidably passes through the guide hole opened on the upper ring 12. The lifting device 18 for driving the upper ring 12 to move up and down is installed on the bottom ring 13 at the same time. By driving the bottom ring 13 to rotate by the second motor 16 and adjusting the height of the upper ring 12 by the lifting device 18, the range for removing hydrogen bubbles can be increased.

[0041] In this embodiment, a radial chute 19 is opened on the upper surface of the upper ring 12. The radial carriage 2 is slidably installed in the chute 19. A rack 20 is fixed on the side surface of the radial carriage 2. The rack 20 is meshed with a sixth gear 21. The sixth gear 21 is connected to the output end of a third motor 22. The third motor 22 is fixed on the upper ring 12. When the third motor 22 rotates, it can drive the sixth gear 21 to rotate. The sixth gear 21 can drive the rack 20 meshed with it to displace radially. Hydrogen bubbles at different radial positions can be removed as needed, making the removal range wider.

[0042] In this embodiment, a central cylinder 23 is coaxially connected to the center of the upper ring 12. The central cylinder 23 is arranged outside the optical module 30. A plurality of through holes 24 are opened on the cylinder wall of the central cylinder 23. By providing the central cylinder 23, hydrogen bubbles can more easily adhere to the through holes 24 on the surface of the central cylinder 23 and are removed by the first ultrasonic transducer 33 on the central cylinder 23. It is easier to break hydrogen bubbles compared to in the liquid.

[0043] In this embodiment, a toothed ring 25 is coaxially connected to the bottom of the central cylinder 23. The toothed ring 25 meshes with a seventh gear 26. The seventh gear 26 is coaxially connected to an eighth gear 28 through an eccentric shaft 27. The eighth gear 28 meshes with a central gear 29. The central gear 29 is connected to the optical module 30. The eccentric shaft 27 is connected to a hollow shaft 32 through a gear bracket 31. The hollow shaft 32 is rotatably installed at the center of the central gear 29. The lower end of the hollow shaft 32 is rotatably and sealingly fitted with the bottom of the electroplating bath at the same time. When the central cylinder 23 rotates, it can drive the optical module 30 to rotate, so that the stubborn hydrogen bubbles on the surface of the optical module 30 can fall off, and can be deeply removed through the outer central cylinder 23 or the de-hydrogenation device.

[0044] In this embodiment, a first ultrasonic transducer 33 is installed on the central gear 29. The first ultrasonic transducer 33 provides low-frequency ultrasonic vibration for the optical module 30 and the central cylinder 23. A second ultrasonic transducer 34 is installed on the radial sliding carriage 2. The second ultrasonic transducer 34 provides high-frequency ultrasonic vibration for the radial sliding carriage 2. The low frequency mentioned here is 20 - 100 kHz, and the high frequency is greater than 1 MHz. The low frequency can effectively split large bubbles. Even if the large bubbles can be broken into small bubbles, the small bubbles can be defeated by high-frequency resonance, thereby improving the bubble removal ability. The large bubbles here are bubbles with a diameter greater than 100 μm, and the small bubbles are bubbles with a diameter less than 10 μm. Of course, according to different frequencies, the corresponding diameters of the removed bubbles will also be different. The dual-frequency sound pressure field can also be superimposed to generate more complex standing wave / traveling wave interference, enhancing the local cavitation intensity.

[0045] In this embodiment, the second pressure roller 4 is rotatably connected to a rotating seat 35. The rotating seat 35 is in radial sliding fit with the radial sliding carriage 2. By adjusting the position of the rotating seat 35 on the radial sliding seat, the distance between the first pressure roller 3 and the second pressure roller 4 can be adjusted. The rotating seat 35 and the radial sliding carriage 2 are fixed through a locking member 36, which can adapt to the removal of hydrogen bubbles under different diameters.

[0046] The working principle and process of this invention application are as follows:

[0047] Before electroplating the optical module 30, after doing a good job in protection, the whole hydrogen removal device is installed in the electroplating tank, where the optical module 30 is located inside the central cylinder 23 of the hydrogen removal device and is connected to the negative electrode. After adjusting the electroplating parameters, the power supply is started to start electroplating. During the electroplating deposition, the hydrogen bubbles outside the optical module 30 are removed through the hydrogen removal device. Specifically, the hydrogen removal device rotates through the meshing between the thorns 5 of the first pressure roller 3 and the spiral groove 6 of the second pressure roller 4 to physically interfere with the bubbles outside the central cylinder 23. The second motor 16 drives the bottom ring 13 to drive the pressure roller mechanism to revolve around the optical module 30 to cover the entire circumferential surface. The third motor 22 moves the radial carriage 2 through the rack 20 - gear system to adapt to different radial positions, and the lifting device 18 adjusts the height of the upper ring 12 to adapt to different vertical positions to ensure the removal of hydrogen bubbles at different positions in the electroplating solution space. While physically piercing the bubbles, low - frequency and high - frequency ultrasonic vibrations are respectively applied to the central cylinder 23 and the radial carriage 2. The low - frequency can effectively split large bubbles. Even if the large bubbles can be broken into small bubbles, the small bubbles can be defeated through high - frequency resonance, thereby improving the bubble removal ability.

[0048] Finally, it should be noted that the above - mentioned preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail through the above - mentioned preferred embodiments, those skilled in the art should understand that various changes can be made in terms of form and details without departing from the scope defined by the claims of the present invention.

Claims

1. Rare earth element doping modification process for the electroplated layer of an optical module, characterized in that, It includes the following steps: Pretreatment: The optical module substrate is successively degreased, pickled and activated to form a clean and active surface; Electrolyte preparation: Using nickel sulfamate or potassium gold cyanide as the main salt, adding 0.5 - 5 g / L of rare earth salt, the rare earth salt is at least one of cerium chloride, lanthanum nitrate or yttrium sulfate, and adding 5 - 15 g / L of sodium citrate complexing agent and sodium dodecyl sulfate surfactant; Electroplating deposition: Under the conditions of pH 3.5 - 4.5 and temperature 45 - 55 °C, electroplating is carried out using a pulsed current with a density of 2 - 5 A / dm 2 ; the pulse frequency is 100 - 500 Hz and the duty cycle is 30 - 50%; Hydrogen removal: During electroplating deposition, the hydrogen bubbles outside the optical module are removed through a hydrogen removal device to prevent the hydrogen bubbles from adhering to the cathode surface and ensure the uniformity of the co - deposition of rare earth and metal; Post - treatment: After electroplating, the optical module is cleaned with deionized water and dried in vacuum.

2. The rare earth element doping modification process of the optical module plating layer according to claim 1, characterized in that, The hydrogen removal device includes a rotating ring assembly, a radial slide mounted on the rotating ring assembly, a first pressing roller and a second pressing roller that are rotatably engaged with the radial slide at the same time, and a rotating driving device for driving the first pressing roller to rotate. At least one group of radial slides is mounted on the rotating ring assembly. The first pressing roller and the second pressing roller are vertically and parallelly arranged at intervals on one side of the optical module. The surface of the first pressing roller is provided with a number of thorn needles, and the thorn needles are spirally arranged on the outer surface of the first pressing roller. The second pressing roller is provided with spiral grooves corresponding to the thorn needles. During electroplating deposition, the rotating driving device drives the first pressing roller to rotate, and the hydrogen bubbles are punctured through the cooperation of the thorn needles and the spiral grooves. There are different radial distances between each group of radial slides and the optical module.

3. The rare earth element doping modification process of the optical module plating layer according to claim 2, characterized in that, The first pressing roller is coaxially connected with a first gear, the second pressing roller is coaxially connected with a second gear, and the first gear and the second gear are meshed to drive the second pressing roller to rotate; The rotating driving device includes a third gear, a fourth gear and a first motor. The third gear is coaxially connected to the end of the first pressing roller far from the first gear. The third gear is meshed with the fourth gear, and the fourth gear is connected to the output shaft of the first motor. The first motor is fixed on the radial slide.

4. The rare earth element doping modification process of the optical module plating layer according to claim 3, characterized in that, The rotating ring assembly includes an upper ring, a bottom ring, a ring seat, a fifth gear, a second motor, a guide rod, and a lifting device. The second motor is fixed on the ring seat. The output shaft of the second motor is connected to the fifth gear. The fifth gear is meshed with the tooth ring on the outside of the bottom ring. The bottom ring is rotatably installed in the ring seat at the same time. The upper end of the bottom ring is fixedly connected with a guide rod, and the guide rod slidably passes through the guide hole opened on the upper ring. The bottom ring is also provided with a lifting device for driving the upper ring to move up and down.

5. The rare earth element doping modification process of the optical module plating layer according to claim 4, characterized in that, The upper surface of the upper ring is provided with a radial chute, the radial slide is slidably installed in the chute, a rack is fixed on the side of the radial slide, the rack is meshed with a sixth gear, and the sixth gear is connected to the output end of a third motor. The third motor is fixed on the upper ring.

6. The rare earth element doping modification process of the optical module plating layer according to any one of claims 4-5, characterized in that, The center of the upper ring is coaxially connected with a central cylinder, the central cylinder is arranged outside the optical module, and a number of through holes are opened on the cylinder wall of the central cylinder.

7. The rare earth element doping modification process of the optical module plating layer according to claim 6, characterized in that, The bottom of the central cylinder is coaxially connected with a toothed ring, the toothed ring is meshed with a seventh gear, the seventh gear is coaxially connected with an eighth gear through an eccentric shaft, the eighth gear is meshed with a central gear, the central gear is connected to the optical module, and the eccentric shaft is connected with a hollow shaft through a gear rack. The hollow shaft is rotatably installed at the center of the central gear.

8. The rare earth element doping modification process of the electroplated layer of the optical module according to claim 7, characterized in that, A first ultrasonic transducer is mounted on the central gear, and the first ultrasonic transducer provides low-frequency ultrasonic vibration for the optical module and the central cylinder; a second ultrasonic transducer is mounted on the radial carriage, and the second ultrasonic transducer provides high-frequency ultrasonic vibration for the radial carriage.

9. The rare earth element doping modification process of the electroplated layer of the optical module according to claim 2, characterized in that, The second pressure roller is rotatably connected to a rotating seat, and the rotating seat is in radial sliding fit with the radial carriage. By adjusting the position of the rotating seat on the radial slide, the distance between the first pressure roller and the second pressure roller can be adjusted, and the rotating seat and the radial carriage are fixed by a locking member.

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