Array lens coupling device and method for light engine packaging

Abstract

This invention discloses an array lens coupling device and method for optical engine packaging, comprising a bottom platform, on which motion mechanism coupling stages are respectively mounted on opposite sides of the top of the bottom platform. An array lens clamping mechanism is mounted on one side of the motion mechanism coupling stage, and a light-receiving FA fixing mechanism is mounted on the other side. A coupling worktable and multiple image recognition systems are also mounted on the top of the bottom platform. The coupling worktable is used to place the modulator optical engine to be coupled by the array lens. The coupling method of this invention uses an open-mold plano-convex lens array to achieve mode field matching between the single-mode fiber array and the multi-channel modulator chip array in the optical engine, eliminating the need for mode field conversion within the fiber and effectively improving coupling efficiency and tolerance. Simultaneously, the coupling and packaging process of the array lens employs automatic image recognition alignment for automatic and rapid coupling, effectively improving coupling accuracy and efficiency.

Description

Technical Field

[0001] This invention relates to an array lens coupling device and method, and more particularly to an array lens coupling device and method for optical engine packaging. Background Technology

[0002] In recent years, thanks to my country's focus on developing emerging industries such as artificial intelligence, telemedicine, and the industrial internet, the cloud computing and data center industries have continued to grow. Simultaneously, the vigorous promotion of 5G network construction has created a huge demand for high-speed transmission optical modules, including 200G, 400G, and the under-development 800G and 1.6T optical modules. Currently, there are three solutions for the transmitter end of optical modules with transmission rates below 400G: EML (Electro-Absorption Laser), SOI modulator chip (Silicon on Insulator modulator chip), and LNOI (Lithium niobate on insulator).

[0003] Due to the numerous advantages of thin-film lithium niobate modulators, such as high bandwidth, low half-wave voltage, and small size, optical module solutions using thin-film lithium niobate modulator chips have become a research hotspot in the industry. However, the optical engine packaging of this solution places high demands on the coupling equipment, which has become a major factor restricting the mass production of this type of module. The traditional coupling solution is to directly couple the FA (Fiber Array) to the output waveguide of the modulator. However, in this solution, the mode conversion inside the FA introduces additional fusion splicing insertion loss, and the change in the mode size of the modulator chip directly affects the coupling efficiency. This patented solution uses a lens array to effectively solve the mode field adaptation problem between the modulator chip and the FA, improving coupling efficiency and coupling tolerance; at the same time, a customized automatic coupling equipment can complete the fully automatic identification, pickup, coupling, dispensing, and online curing of the lens array, achieving the high integration coupling packaging process requirements of the optical engine. Summary of the Invention

[0004] Purpose of the invention: The purpose of this invention is to provide an array lens coupling device and method for optical engine packaging, which improves the production efficiency and coupling accuracy of optical engine packaging, while increasing coupling efficiency, coupling tolerance and reworkability.

[0005] Technical solution: The present invention includes a bottom platform, on which motion mechanism coupling stages are respectively installed on opposite sides of the top of the bottom platform. An array lens clamping mechanism is installed on one side of the motion mechanism coupling stage, and a light-collecting FA fixing mechanism is installed on the other side of the motion mechanism coupling stage. A coupling worktable and multiple image recognition systems are also installed on the top of the bottom platform. The coupling worktable is used to place the modulator optical engine to be coupled by the array lens.

[0006] The array lens clamping mechanism includes a motor mounting bracket, which is mounted on the motion mechanism coupling platform. A first pressure sensor is mounted on the top of the motor mounting bracket, and a motor is mounted on the bottom. Grippers are mounted on the moving parts of the motor and on the motor mounting bracket.

[0007] The receiving FA fixing mechanism includes a receiving FA bracket adapter plate, which is mounted on the coupling platform of the motion mechanism. A second pressure sensor and a receiving FA are installed on the receiving FA bracket adapter plate. The tail fiber of the receiving FA is connected to an optical power meter, and the front end of the receiving FA receives light from the modulator optical engine after modulation and focusing by the array lens.

[0008] The top of the coupling stage is equipped with a product coupling stage, on which a modulator optical engine, a side mirror, and an end face mirror are mounted.

[0009] The motion mechanism coupling platform is a six-axis linear motor coupling platform.

[0010] The image recognition system includes a bottom camera recognition system and a top camera recognition system. The bottom camera recognition system is mounted on a bottom platform, and the top camera recognition system is mounted on a gantry motion system. The gantry motion system is mounted on the bottom platform, and a dispensing mechanism is also installed on the gantry motion system.

[0011] The modulator optical engine includes an optical engine substrate, on which a modulator is provided. The modulator has multiple waveguide ports. The array lens has multiple lenses arrayed on it. The receiving FA integrates multiple optical fibers. The multiple waveguide ports, multiple lenses and multiple optical fibers correspond one-to-one to form multiple optical paths.

[0012] An array lens coupling method for optical engine packaging includes the following steps:

[0013] S1. Place the modulator optical engine on the product coupling stage;

[0014] S2. Automatic image recognition of the position and angle of all light-emitting waveguides and array lenses of the modulator is performed by the top camera recognition system.

[0015] S3. The array lens clamping mechanism clamps the array lens above the bottom camera recognition system according to the identified position and angle. The bottom camera identifies the angle of the bottom of the array lens and moves the array lens along R. z Adjust the direction;

[0016] S4. Move the array lenses sequentially to the positions of the side reflector optical path and the end reflector optical path, and use the top camera recognition system to sequentially identify the side angle and end face angle of the array lenses, and then move the array lenses sequentially along R... x R y Adjust the direction;

[0017] S5. Move the array lens to the theoretically calculated coupling position at the front end of the modulator, and make its bottom touch the bottom of the optical engine substrate at the coupling position to obtain the reference position of the array lens relative to the optical engine in the Z direction. Then, continue to move the array lens forward so that it contacts the end face of the output waveguide of the modulator to obtain the reference position of the array lens relative to the end face of the output waveguide of the modulator in the Y direction.

[0018] S6. Drive the light-receiving FA fixing mechanism to move the light-receiving FA to the theoretically calculated coupling position at the front end of the array lens, and make its bottom touch the bottom of the light engine substrate at the coupling position to obtain the reference position of the FA relative to the light engine in the Z direction.

[0019] S7. Power on the laser, modulate the chip according to the modulator reading, and maximize the output power of the outermost optical path in sequence. Each time, use the optical power meter reading as a feedback signal to drive the array lens to scan and couple in multiple directions to maximize the received optical power of the power meter. Record the coordinates of the position (P1x, P1y, P1z) and (P2x, P2y, P2z) respectively.

[0020] S8. Calculate the lens offset angles in the Ry and Rz directions using (P1x, P1y, P1z) and (P2x, P2y, P2z), as shown in the following formulas, and then rotate the Ry and Rz axes in the opposite direction to balance the error:

[0021]

[0022]

[0023] S9. Repeat steps S7 to S8 until the calculated error values ​​of Ry and Rz are both less than 0.1 degrees.

[0024] S10. Based on the modulator reading, the modulator chip is used to maximize the output power of each channel in sequence. The optical power meter reading is used as a feedback signal to drive the receiving FA to perform scanning coupling in multiple directions. The optical power of each optical channel and the position coordinates of all motors corresponding to the final coupling position P3 when the output power of the first optical channel is maximized are recorded.

[0025] S11. Remove the array lens, move the dispensing mechanism to the position P3 where the array lens has the greatest coupling power, and dispense adhesive in this area.

[0026] S12. Move the array lens to position P3, repeat S7-S8, so that the array lens is finally in the position with the maximum power after the coupling angle of the two outermost lenses is balanced, and then solidify the array lens.

[0027] S13. Move the array lens clamping mechanism and the light-receiving FA fixing mechanism to a safe position, remove the modulator optical engine that has completed array lens coupling, and the coupling ends.

[0028] Beneficial effects: The coupling method of this invention adopts an open-mold plano-convex lens array to achieve mode field matching between the single-mode fiber array (mode field diameter 10um) and the multi-channel modulator chip array (mode field diameter 4um) in the optical engine, without the need for mode field conversion within the fiber, effectively improving coupling efficiency and coupling tolerance; at the same time, the coupling and packaging process of the array lens adopts automatic image recognition alignment, automatic and fast coupling, effectively improving coupling accuracy and coupling efficiency. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the array lens clamping mechanism of the present invention;

[0031] Figure 3 This is a schematic diagram of the light-collecting FA fixing mechanism of the present invention;

[0032] Figure 4 This is a schematic diagram of the coupling worktable of the present invention;

[0033] Figure 5 This is a diagram showing the correspondence between the coupling positions of the present invention. Detailed Implementation

[0034] The invention will now be further described with reference to the accompanying drawings.

[0035] like Figure 1As shown, the present invention includes a bottom air-floating platform 1. A bottom camera recognition system 2, a coupling worktable 3, a right-side linear motor six-axis coupling stage 6, a gantry motion system 7, and a left-side linear motor six-axis coupling stage 10 are mounted on the top of the bottom air-floating platform 1. A light-collecting FA fixing mechanism 5 is mounted on the right-side linear motor six-axis coupling stage 6, and an array lens clamping mechanism 4 is mounted on the left-side linear motor six-axis coupling stage 10. The linear motor six-axis coupling stages are used to move and adjust the position and orientation of the light-collecting FA and the array lens, respectively. A top camera recognition system 8 and a top dispensing mechanism 9 are mounted on the gantry motion system 7, which are driven by the top gantry motion system to move to a designated position. The array lens clamping mechanism 4 is used to clamp the array lens, and the coupling worktable 3 is used to place and fix the modulator optical engine to be coupled to the array lens. The bottom camera recognition system 2 can recognize the orientation of the array lens to determine the orientation of the array lens. Z The angle is adjusted. The top camera recognition system 8, in conjunction with two mirrors placed on the coupling stage, identifies the orientation of the array lens to determine the orientation of the array lens R. X and R y The angle is adjusted. After the array lens is coupled, glue is applied by the top dispensing mechanism 9 and cured by a UV lamp fixed on the six-axis coupling stage 10 of the left linear motor.

[0036] The bottom air-floating platform 1 is equipped with four cylinders to ensure that the entire system mounted on the platform is in a dynamic balance state, preventing vibrations from the inside and outside of the equipment from affecting the coupling process and ensuring motion accuracy and final coupling accuracy. The left-side linear motor six-axis coupling stage 10 is equipped with linear motion X-axis, linear motion Y-axis, and linear motion Z-axis, allowing the array lens held by the array lens clamping mechanism fixed on it to move along the X, Y, and Z directions for position adjustment; it also has a rotational motion R... X The axis, the rotational motion Ry axis, and the rotational motion Rz axis allow the array lens held by the end of the array lens gripping mechanism fixed thereto to rotate around R. X The device rotates in the Ry and Rz directions to adjust its posture. The right-side linear motor six-axis coupling stage 6 has linear motion X-axis, linear motion Y-axis, and linear motion Z-axis, allowing the light-collecting FA fixed at the end of the light-collecting FA fixing mechanism to move along the X, Y, and Z directions for position adjustment; it also has a rotational motion R... X The axis, the rotational motion Ry axis, and the rotational motion Rz axis allow the light-collecting FA fixed at the end of the light-collecting FA fixed on it to rotate around R. X Rotate in the Ry and Rz directions to adjust the attitude.

[0037] like Figure 2As shown, the array lens clamping mechanism 4 includes a motor mounting bracket 41, a first pressure sensor 42, a first pressure sensor fixing block 43, a motor 44, a front gripper mounting bracket fixing plate 45, a rear gripper mounting bracket fixing plate 46, a left gripper mounting bracket 47, a left gripper 48, an array lens to be coupled 49, a right gripper 410, and a right gripper mounting bracket 411. The motor mounting bracket 41 is fixed to the R-axis of the left linear motor six-axis coupling stage 10. y On the rotating shaft, the first pressure sensor 42 is mounted on the top of the motor mounting bracket 41 via the first pressure sensor fixing block 43. The motor 44 is fixed to the bottom of the motor mounting bracket 41. The left gripper mounting bracket 47 is mounted on the linear motion component of the motor 44. The right gripper mounting bracket 411 is fixed to the motor mounting bracket 1 via the front gripper mounting bracket fixing plate 45 and the rear gripper mounting bracket fixing plate 46. The left gripper 48 and the right gripper 410 are respectively mounted on the left gripper mounting bracket 47 and the right gripper mounting bracket 411. When the motor 44 moves left and right along the X-axis, it can drive the left gripper 48 to move left and right along the X-axis, adjusting the distance between the left and right grippers to achieve the gripping and placement of the array lens. The first pressure sensor 42 can sense the force changes when the left and right grippers grip and place the array lens, so that the array lens can be placed in the accurate position.

[0038] like Figure 3 As shown, the light-receiving FA fixing mechanism 5 includes a light-receiving FA bracket adapter plate 51, a second pressure sensor 52, a second pressure sensor fixing block 53, a light-receiving FA fixing bracket 54, and a light-receiving FA 55. The light-receiving FA bracket adapter plate 51 is fixed to the R of the right-side linear motor six-axis coupling stage 6. y On the rotating shaft, the second pressure sensor 52 is mounted on the top of the receiving FA bracket adapter plate 51 via the second pressure sensor fixing block 53. The receiving FA fixing bracket 54 is mounted on the receiving FA bracket adapter plate 51, and the receiving FA 55 is fixed at the bottom of the receiving FA fixing bracket 54. The optical fiber at the tail of the receiving FA 55 is connected to the optical power meter. The front end of the receiving FA 55 receives the light modulated by the modulator optical engine and focused by the array lens, which is used to determine whether the array lens is coupled to the accurate position. The second pressure sensor 52 can sense the change in force after the receiving FA 55 is touched, so that the receiving FA can be placed in the accurate position.

[0039] like Figure 4As shown, the coupling stage 3 includes a lower elevation block 31, a manual leveling shaft 32, an upper elevation block 33, a manual adjustment rotation shaft 34, a product coupling stage 35, a modulator optical engine 36, an end face reflector 37, and a side reflector 38. The lower elevation block 31 is mounted on the bottom air-floating platform 1. The manual leveling shaft 32, upper elevation block 33, manual adjustment rotation shaft 34, and product coupling stage 35 are sequentially mounted on the lower elevation block 31 from bottom to top. The manual leveling shaft 32 and manual adjustment rotation shaft 34 are used to level the product coupling stage 35. A product coupling stage adapter plate is provided between the manual adjustment rotation shaft 34 and the product coupling stage 35. The side reflector 38 is placed at 90° to the end face reflector 37 and is used in conjunction with the top camera to identify the side and end face angles of the array lens, so that the left-side linear motor six-axis coupling stage can adjust the attitude of the array lens. X R y The direction can be rotated; the product coupling stage 35 is designed with stepped steps and vacuum holes for precise positioning and vacuum adsorption fixation of the modulator optical engine 36. The modulator optical engine 36 includes an optical engine substrate and a modulator, with the modulator attached to the optical engine substrate.

[0040] When the array lens clamping mechanism clamps the array lens and the light-receiving FA fixing mechanism drives the light-receiving FA to be coupled at the front end of the modulator optical engine, the positional correspondences of the modulator waveguide, the lens on the array lens, and the optical fiber on the light-receiving FA are as follows: Figure 5 As shown in the diagram, the multiple waveguides of the modulator, the multiple lenses of the array lens, and the multiple optical fibers of the receiving FA correspond one-to-one. In this embodiment, four waveguides, four lenses, and four optical fibers are selected. On the modulator, from left to right, they are the first waveguide, the second waveguide, the third waveguide, and the fourth waveguide; on the array lens, from left to right, they are the first lens, the second lens, the third lens, and the fourth lens; on the receiving FA, from left to right, they are the first optical fiber, the second optical fiber, the third optical fiber, and the fourth optical fiber. The ends of the four optical fibers of the receiving FA are all connected to an optical power meter. The optical path along the first waveguide, the first lens, and the first optical fiber is called the first path, and so on, successively called the second path, the third path, and the fourth path.

[0041] The array lens coupling method of the present invention includes:

[0042] S1. Place the optical engine with the modulator attached on the product coupling stage;

[0043] S2. The top gantry motion system drives the top camera recognition system to automatically recognize the first to fourth light-emitting waveguide ports of the modulator.

[0044] S3, The top gantry motion system drives the top camera recognition system to automatically recognize the position and angle of the array lens;

[0045] S4. The array lens clamping mechanism clamps the array lens to the top of the bottom camera recognition system according to the recognized position and angle. The bottom camera performs angle recognition on the bottom of the array lens.

[0046] S5. Based on the angle of the bottom camera's recognition of the bottom of the array lens, R on the left linear motor six-axis coupling stage... z The rotating shaft rotates, causing the array lens held by the jaws of the array lens clamping mechanism to move along R. z Adjust the direction;

[0047] S6. The array lens clamping mechanism clamps the angle-adjusted array lens to the optical path position of the side reflector above the coupling stage. The top camera uses the side reflector to identify the side angle of the array lens. The R on the left linear motor six-axis coupling stage... x The rotating shaft rotates, causing the array lens held by the jaws of the array lens clamping mechanism to move along R. x Adjust the direction;

[0048] S7. The array lens clamping mechanism clamps the angle-adjusted array lens to the optical path position of the end-face reflector above the coupling stage. The top camera uses the end-face reflector to identify the end-face angle of the array lens. The left linear motor on the six-axis coupling stage... y The rotating shaft rotates, causing the array lens held by the jaws of the array lens clamping mechanism to move along R. y Adjust the direction;

[0049] S8, Array lens clamping mechanism clamps via R X R y R z The theoretically calculated coupling position between the array lens after attitude adjustment by three rotation angles and the front end of the modulator.

[0050] S9. The array lens clamping mechanism clamps the array lens so that its bottom touches the bottom of the optical engine substrate at the theoretically calculated coupling position, and obtains the reference position of the array lens relative to the optical engine in the Z direction; the array lens clamping mechanism clamps the array lens so that its front end face contacts the modulator output waveguide end face on the optical engine at the theoretically calculated coupling position, and obtains the reference position of the array lens relative to the modulator output waveguide end face on the optical engine in the Y direction.

[0051] S10, The right linear motor six-axis coupling stage drives the light-collecting FA fixed at the end of the light-collecting FA fixing mechanism to the coupling position at the front end of the array lens, which is calculated theoretically.

[0052] S11, the FA fixing mechanism drives the FA so that its bottom touches the bottom of the optical engine substrate at the theoretically calculated coupling position, and obtains the reference position of the FA relative to the optical engine in the Z direction;

[0053] S12. The laser is powered on (300mA). Based on the reading of the integrated MPD of the modulator, the modulation chip is used to maximize the output power of the first channel. The reading of the optical power meter is used as the feedback signal. The six-axis clamping array lens on the left performs scanning coupling in the X, Y, and Z directions to maximize the received optical power of the power meter. The coordinates of this position (P1x, P1y, P1z) are recorded.

[0054] S13. Based on the integrated MPD reading modulation chip of the modulator, maximize the output power of the fourth channel. Use the optical power meter reading as the feedback signal. The left six-axis clamping array lens performs scanning coupling in the X, Y, and Z directions to maximize the received optical power of the power meter. Record the coordinates of this position (P2x, P2y, P2z).

[0055] S14. Calculate the offset angle of the lens in the Ry and Rz directions using the coordinate positions of (P1x, P1y, P1z) and (P2x, P2y, P2z). The formula is as follows: reverse rotation of Ry and Rz axes to balance the error.

[0056]

[0057]

[0058] S15. Repeat S12-S14 until the error values ​​of the calculated Ry and Rz are both less than 0.1 degrees;

[0059] S16. Based on the MPD reading modulation chip integrated in the modulator, maximize the output power of the first channel. Use the optical power meter reading as the feedback signal. The right six-axis drives the receiving FA to perform scanning coupling along the X, Y, and Z directions. Maximize the optical power of the output light from the first waveguide port of the modulator after it is focused by the first lens on the array lens and enters the first optical fiber on the left side of the receiving FA. Record the optical power AOP1 at this time and the position coordinates of all linear motors corresponding to the final coupling position P3.

[0060] S17. Based on the MPD reading modulation chip integrated in the modulator, maximize the output optical power of the second, third, and fourth channels respectively, and record the optical power AOP2, AOP3, and AOP4 at this time.

[0061] S18. Move the array lens to a safe position using the left linear motor six-axis coupling stage;

[0062] S19. The top gantry motion system drives the top dispensing mechanism to move to the position P3 where the array lens coupling power is the largest. The top dispensing mechanism performs dispensing in the area near position P3.

[0063] S20. The left linear motor six-axis coupling stage moves the array lens to position P3. Repeat S12-S14 so that the array lens is finally in the position with the maximum power after the coupling angle of the first lens and the fourth lens is balanced.

[0064] S21. Open the six-axis coupling table R of the linear motor installed on the left side. x The UV lamp on the axis cures the adhesive at the bottom of the array lens;

[0065] S22, The motor in the array lens gripping mechanism is activated, the gripper releases the array lens, and the array lens gripping mechanism moves to a safe position;

[0066] S23. The light-receiving FA fixing mechanism is moved to a safe position, the product coupling stage on the coupling worktable is vacuum closed, the modulator optical engine that has completed the array lens coupling is removed, and the coupling ends.

Claims

1. A method for coupling array lenses in an optical engine package, characterized in that, The device includes an array lens coupling device for packaging an optical engine. The coupling device includes a bottom platform, on which motion mechanism coupling stages are respectively mounted on opposite sides of the top of the bottom platform. An array lens clamping mechanism is mounted on one side of the motion mechanism coupling stage, and a light-collecting FA fixing mechanism is mounted on the other side of the motion mechanism coupling stage. A coupling worktable and multiple image recognition systems are also mounted on the top of the bottom platform. The coupling worktable is used to place the modulator optical engine to be coupled by the array lens. The array lens clamping mechanism includes a motor mounting bracket, which is mounted on the motion mechanism coupling platform; the light-collecting FA fixing mechanism includes a light-collecting FA bracket adapter plate, which is mounted on the motion mechanism coupling platform; the top of the coupling worktable is provided with a product coupling platform, which is provided with a modulator optical engine, a side reflector, and an end face reflector; the image recognition system includes a bottom camera recognition system and a top camera recognition system, with the bottom camera recognition system mounted on the bottom platform and the top camera recognition system mounted on the gantry motion system; The specific coupling method includes the following steps: S1. Place the modulator optical engine on the product coupling stage; S2. Automatic image recognition of the position and angle of all light-emitting waveguides and array lenses of the modulator is performed by the top camera recognition system. S3. The array lens clamping mechanism clamps the array lens above the bottom camera recognition system according to the identified position and angle. The bottom camera identifies the angle of the bottom of the array lens and moves the array lens along R. z Adjust the direction; S4. Move the array lenses sequentially to the positions of the side reflector optical path and the end reflector optical path, and use the top camera recognition system to sequentially identify the side angle and end face angle of the array lenses, and then move the array lenses sequentially along R... x R y Adjust the direction; S5. Move the array lens to the theoretically calculated coupling position at the front end of the modulator, and make its bottom touch the bottom of the optical engine substrate at the coupling position to obtain the reference position of the array lens relative to the optical engine in the Z direction. Then, continue to move the array lens forward so that it contacts the end face of the output waveguide of the modulator to obtain the reference position of the array lens relative to the end face of the output waveguide of the modulator in the Y direction. S6. Drive the light-receiving FA fixing mechanism to move the light-receiving FA to the theoretically calculated coupling position at the front end of the array lens, and make its bottom touch the bottom of the light engine substrate at the coupling position to obtain the reference position of the FA relative to the light engine in the Z direction. S7. Power on the laser, modulate the chip according to the modulator reading, and maximize the output power of the outermost optical path in sequence. Each time, use the optical power meter reading as a feedback signal to drive the array lens to scan and couple in multiple directions to maximize the received optical power of the power meter. Record the position coordinates (P1x, P1y, P1z) and (P2x, P2y, P2z) of the point where the received optical power of the power meter is maximized. S8. Calculate the lens offset angles in the Ry and Rz directions using (P1x, P1y, P1z) and (P2x, P2y, P2z), as shown in the following formulas, and then rotate the Ry and Rz axes in the opposite direction to balance the error: ； ； S9. Repeat steps S7 to S8 until the error values ​​of the calculated Ry and Rz are both less than 0.1 degrees. S10. Based on the modulator reading, the modulator chip is used to maximize the output power of each channel in sequence. The optical power meter reading is used as a feedback signal to drive the receiving FA to perform scanning coupling in multiple directions. The optical power of each optical channel and the position coordinates of all motors corresponding to the final coupling position P3 when the output power of the first optical channel is maximized are recorded. S11. Remove the array lens, move the dispensing mechanism to the position P3 where the array lens has the greatest coupling power, and dispense adhesive at P3. S12. Move the array lens to position P3, repeat S7-S8, so that the array lens is finally in the position with the maximum power after the coupling angle of the two outermost lenses is balanced, and then solidify the array lens. S13. Move the array lens clamping mechanism and the light-receiving FA fixing mechanism to a safe position, remove the modulator optical engine that has completed array lens coupling, and the coupling ends.

2. The array lens coupling method for optical engine packaging according to claim 1, characterized in that, The motor mounting bracket has a first pressure sensor installed on the top and a piezoelectric ceramic motor installed on the bottom. The moving parts of the motor and the motor mounting bracket are both equipped with grippers.

3. The array lens coupling method for optical engine packaging according to claim 2, characterized in that, The receiving FA bracket adapter plate is equipped with a second pressure sensor and a receiving FA. The tail fiber of the receiving FA is connected to an optical power meter. The front end of the receiving FA receives light from the modulator optical engine, which modulates the light and then focuses it through an array lens.

4. The array lens coupling method for optical engine packaging according to claim 3, characterized in that, The motion mechanism coupling platform is a six-axis linear motor coupling platform.

5. The array lens coupling method for optical engine packaging according to claim 1, characterized in that, The gantry motion system is mounted on the bottom platform, and a dispensing mechanism is also installed on the gantry motion system.

6. The array lens coupling method for optical engine packaging according to claim 1, characterized in that, The modulator optical engine includes an optical engine substrate, on which a modulator is provided. The modulator has multiple waveguide ports. The array lens has multiple lenses arrayed on it. The receiving FA integrates multiple optical fibers. The multiple waveguide ports, multiple lenses and multiple optical fibers correspond one-to-one to form multiple optical paths.

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