Welding method after optical fiber coupling, computer device, storage medium and program product

Abstract

The invention provides a welding method after optical fiber coupling, a computer device, a storage medium and a program product. The method comprises the following steps: acquiring a first change relation between optical fiber output power and offset from an optimal position; welding at the target position is controlled, and a second change relation of the optical fiber output power along with time change is recorded; determining the highest power of the solidification process and the power after solidification in the second change relation; when it is determined that the difference between the power after solidification and the optimal alignment power in the first change relation is not within a first preset range, fitting operation is carried out according to the highest power in the solidification process, the power after solidification and the first change relation, and the calculation offset moving to the optimal position corresponding to the optimal alignment power is obtained; adjusting the target position by calculating the offset; and the adjusted target position is controlled to be welded. The welding efficiency after optical fiber coupling is improved, and material loss in the welding process is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of optical fiber welding, and in particular to an optical fiber coupling and welding method, a computer device, a storage medium and a program product. Background Art

[0002] In a conventional solution, a laser chip is disposed on a laser substrate, and the optical fiber and the laser chip are aligned with high precision and then welded, so that the optical fiber is connected to the substrate through the laser chip.

[0003] After the light output by the laser chip is output through the optical fiber, the optical fiber output power can be collected. Depending on the relative position of the laser chip and the optical fiber during welding, the collected optical fiber output power is different. When the optical fiber is at the optimal position, it is highly precisely aligned with the laser chip. At this time, the collected optical fiber output power is the largest relative to other positions. However, due to the buoyancy and uneven density of the solder, the position of the optical fiber will change during the solidification of the solder. Therefore, it is impossible to set the optical fiber at the optimal position before welding so that it can be highly precisely aligned with the position of the laser chip. Usually, the optical fiber is set at an empirical position before welding. There is a certain offset between the empirical position and the optimal position. After welding, under the action of the solidification of the solder, the optical fiber falls from the empirical position to the optimal position.

[0004] However, the empirical position can only be used to estimate the approximate empirical offset position based on the characteristics of different optical fiber materials and solder density. There are differences in different batches of solder, and the force on the optical fiber is random, resulting in the offset of the optimal position corresponding to the empirical position not being optimal. The setting of the empirical position needs to be adjusted multiple times, and the setting of the empirical position can only be adjusted by the operator based on empirical values, which increases the realignment time and consumes more materials. Summary of the invention

[0005] The first object of the present invention is to provide a method for post-coupling welding of optical fibers which can improve the efficiency of post-coupling welding.

[0006] The second object of the present invention is to provide a computer device for implementing the above-mentioned optical fiber coupling and welding method.

[0007] A third object of the present invention is to provide a computer-readable storage medium for implementing the above-mentioned optical fiber coupling and welding method.

[0008] A fourth object of the present invention is to provide a computer program product for implementing the above-mentioned optical fiber coupling and welding method.

[0009] In order to achieve the above-mentioned first purpose, the present invention provides a method for post-optical fiber coupling welding, which includes the following steps: obtaining a first change relationship between the optical fiber output power and the offset from the optimal position; controlling welding at the target position, and recording a second change relationship in which the optical fiber output power changes with time; determining the maximum power of the solidification process and the power after solidification in the second change relationship; when it is determined that the difference between the power after solidification and the optimal alignment power in the first change relationship is not within a first preset range, performing a fitting operation based on the maximum power of the solidification process, the power after solidification and the first change relationship to obtain a calculated offset for moving to the optimal position corresponding to the optimal alignment power; adjusting the target position by calculating the offset; and controlling welding at the adjusted target position.

[0010] As can be seen from the above scheme, the present invention records the second change relationship during the welding process, determines the welding result by comparing the output light power with the optimal alignment power, and calculates the calculated offset in combination with the first change relationship when the welding does not meet the requirements, adjusts the target position again according to the calculated offset, and re-welds according to the adjusted target position. The present invention obtains the calculated offset by automatic and rapid calculation, without manual adjustment based on the operator's experience, thereby improving the efficiency of welding after the laser device is coupled; the present invention overcomes the problem of increased risk of material damage caused by multiple melting and solidification of the solder; the present invention can be set up in a closed area because it is realized through automation, avoiding safety risks caused by operator misoperation during the welding laser melting solder process.

[0011] A further solution is to control the recording of the correspondence between the current optical fiber output power and the current offset from the optimal position while welding is being performed at the adjusted optimal position, and after welding is completed, determine whether the difference between the current optical power collected after welding is completed and the optimal alignment power is within a first preset time range, if not, update the first change relationship based on the correspondence between the current optical fiber output power and the current offset from the optimal position.

[0012] It can be seen that the present invention can update the first change relationship according to the correspondence between the optical fiber output power recorded in this welding and the current offset from the optimal position, thereby improving the accuracy of the next welding and improving the overall welding efficiency.

[0013] A further solution is to obtain a first variation relationship between the optical fiber output power and the offset from the optimal position in the X-axis and Y-axis directions.

[0014] It can be seen that the calculated offset can be obtained through different first change relationships according to different offset situations.

[0015] A further solution is that a fitting operation is performed according to the highest power in the coagulation process, the power after coagulation and the first change relationship to obtain the calculated offset for moving to the optimal position corresponding to the optimal alignment power, including: when it is determined that the difference between the highest power in the coagulation process and the optimal alignment power is within the second preset range, and the power after coagulation is less than the first preset percentage of the optimal alignment power, it is determined that the Y-axis variable needs to be compensated; when it is determined that the difference between the highest power in the coagulation process and the power after coagulation is within the third preset range, and the power after coagulation and the highest power in the coagulation process are both less than the second preset percentage of the optimal alignment power and greater than the third preset percentage of the optimal alignment power, it is determined that the Y-axis variable needs to be compensated; when it is determined that the highest power in the coagulation process and the power after coagulation are both less than the optimal alignment power, and the highest power in the coagulation process is greater than the fourth preset percentage of the power after coagulation, it is determined that the X-axis variable and the Y-axis variable need to be compensated; when it is determined that the difference between the highest power in the coagulation process and the power after coagulation is less than the fourth preset range, and the highest power in the coagulation process and the power after coagulation are both less than the fifth preset percentage of the optimal alignment power, it is determined that the X-axis variable and the Y-axis variable need to be compensated.

[0016] It can be seen that different offset situations can be defined by setting different ranges, so that different first change relationships can be selected to make the calculation of the offset more accurate.

[0017] In order to achieve the above-mentioned second purpose, the present invention provides a computer device, including a processor and a memory, wherein: the memory stores a computer program, and when the computer program is executed by the processor, the above-mentioned optical fiber coupling and welding method is implemented.

[0018] In order to achieve the third objective mentioned above, the computer program provided by the present invention implements the above-mentioned optical fiber coupling and welding method when executed by a processor.

[0019] In order to achieve the fourth objective mentioned above, the present invention provides a computer program product, including computer instructions, wherein: when the computer instructions are executed by a processor, the above-mentioned optical fiber coupling and welding method is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a flow chart of an embodiment of the optical fiber coupling and welding method of the present invention.

[0021] Figure 2 It is an example diagram of the first change relationship between the optical fiber output power and the offset from the optimal position in the Y-axis direction in the embodiment of the optical fiber coupling and welding method of the present invention.

[0022] Figure 3 It is a schematic diagram of the second change relationship and the moving trajectory of the optical fiber under five situations of optical fiber deviation during the welding process of the embodiment of the optical fiber coupling and welding method of the present invention.

[0023] Figure 4 This is an example diagram of the changes in laser intensities and output optical power of the laser used for welding during the welding process in the embodiment of the fiber-coupled welding method of the present invention.

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0025] Fiber coupling and welding method embodiment:

[0026] The fiber-coupled welding method of this embodiment is implemented by a fiber-coupled welding system, which includes a fiber-aligned automatic coupling system and a fiber-welding system. The fiber-aligned automatic coupling system detects the output power of the fiber from the other end of the fiber after the laser output from the laser chip enters the fiber before welding, so as to set the fiber to be welded in the optimal position. The fiber-optic welding system will adjust the fiber-aligned automatic coupling system to align the fiber offset according to the welding characteristics, and then control the laser used for welding to weld the optical fiber and the laser chip (the laser chip is not the chip of the laser used for welding). Ensure that after welding, the optical characteristics are equivalent to the performance of the optimal position before welding, and record the relevant data.

[0027] See also Figure 1 The optical fiber coupling welding method of this embodiment is implemented by executing a computer program, and specifically includes:

[0028] S11: Obtain a first variation relationship between the optical fiber output power and the offset from the optimal position.

[0029] Among them, the motor is controlled to adjust the X, Y or Z axis direction so that the optical fiber moves to a position a certain distance away from the optimal position, and then the welding laser is controlled to melt and solidify the solder. In this process, the optical fiber output power is synchronously collected to obtain the first change relationship between the optical fiber output power under the current material and solder and the offset from the optimal position. The optical fiber output power is the optical power collected at the other end when the laser output by the laser chip enters from one end of the optical fiber and outputs at the other end.

[0030] See also Figure 2 , Figure 2 An example of the first variation relationship between the optical fiber output power and the offset from the optimal position in the Y-axis direction is shown. When the offset from the optimal position is 0, the output optical power is 5046.48 mW; when the offset from the optimal position is 0.5 microns, the output optical power is 4918.699 mW. It can be seen that the optimal alignment power is 5046.48 mW.

[0031] S12: Determine the target position and perform welding at the target position.

[0032] For welding between the current laser chip and the current optical fiber, when step S12 is performed for the first time, the target position is the empirical position, and welding is controlled to be performed at the target position.

[0033] The empirical position can be obtained through experimental results. When the empirical position is unknown, the empirical position is set to a welding point height (for example, 50um) for welding. Due to the large position deviation, a large distance is moved during welding, resulting in time loss. However, after several times of melting the solder and re-adjusting the position for welding, the optical fiber can still be welded to the optimal position. The empirical offset value is obtained based on the difference between the motor position after welding and the optimal coupling position before welding. The empirical position is obtained by adding the empirical offset value to the optimal position. After the empirical position is determined, the next optical fiber is welded to the next laser core. When step S12 is executed for the first time, the empirical position can be directly used as the target position, and the next optical fiber can be set at the empirical position.

[0034] For welding between the current laser chip and the current optical fiber, when executing step S12 for the second time, the target position is determined in the same way as steps S16 and S17, that is, a fitting operation is performed based on the maximum power during the solidification process and the power after solidification in the second change relationship of the output power of the currently welded optical fiber over time recorded in step S18, and the first change relationship updated in step S20 to obtain the calculated offset for moving to the optimal position corresponding to the optimal alignment power, thereby redetermining the target position based on the calculated offset.

[0035] S13: Record the second variation relationship of the optical fiber output power over time.

[0036] S14: Determine the highest power during the coagulation process and the power after coagulation in the second variation relationship.

[0037] S15: Determine whether the difference between the post-solidification power and the optimal alignment power is within a first preset range.

[0038] Among them, see Figure 3 , Figure 3 Five situations of optical fiber deviation during welding are shown respectively, wherein a corresponding movement trajectory diagram is set under the second change relationship of each situation, P0 is the best alignment power, P0' is the highest power during solidification, and P1 is the power after solidification; the intersection of the two blue dotted lines is the optimal position.

[0039] The dark blue trajectory curve is the first case, in which the difference between P1 and P0 is less than 5% (the first preset range of this embodiment is ±5%), which means that the current laser chip and the current optical fiber are successfully welded.

[0040] The red trajectory curve is the second case, in which the difference between P0' and P0 is less than 5% (the second preset range of this embodiment is ±5%), and P1 is less than 95% of P0 (the first preset percentage of this embodiment is 95%), which means that the target position is not offset enough relative to the optimal position, but the solidification process has passed through the optimal position, the X-axis direction is correct, and compensation needs to be made to increase the Y-axis variable.

[0041] The gray curve trajectory is the third case, in which the difference between P0' and P1 is less than 5% (the third preset range of this embodiment is ±5%), and they are both less than 95% of P0 (the second preset percentage of this embodiment is 95%), and greater than 80% of P0 (the third preset percentage of this embodiment is 80%), which means that the target position is not offset enough relative to the optimal position, the solidification process has not passed the optimal position, and the Y-axis variable needs to be moved to compensate.

[0042] The yellow curve trajectory is the fourth case, in which P0' and P1 are both smaller than P0, and P0' is greater than 105% of P1 (the fourth preset percentage of this embodiment is 105%), indicating that the X-axis offset of the target position is incorrect and compensation of the X-axis and Y-axis is required.

[0043] The sky blue curve trajectory is the fifth case, in which the difference between P0' and P1 is less than 5% (the fourth preset range of this embodiment is ±5%), and they are both less than 80% of P0 (the fifth preset percentage of this embodiment is 80%), and the X-axis and Y-axis variables need to be adjusted for compensation.

[0044] The second change relationship obtained by this welding is as follows: Figure 3 If the dark blue curve track in the figure is shown, it means that the welding is successful, and the current laser chip and the current optical fiber are successfully welded. Otherwise, continue to execute step S16.

[0045] S16: Perform a fitting operation according to the highest power during the coagulation process, the power after coagulation, and the first change relationship to obtain a calculated offset for moving to the optimal position corresponding to the optimal alignment power.

[0046] The highest power during the coagulation process and the power after coagulation are combined, and the power and position are fitted based on the first change relationship to obtain a slope, through which the calculated offset of the target position moving to the optimal position corresponding to the optimal alignment power can be calculated.

[0047] See also Figure 4 , Figure 4 The figure shows an example of the change of output optical power during welding. The maximum power during solidification is 5046.48mW, and the power after solidification is 2399.24mW. Figure 2It can be seen that the optimal alignment power is 5046.48mW. Therefore, it can be determined that during the welding solidification process, the optical fiber has passed the optimal position, which is a situation where there is no offset in the X-axis direction and the Y-axis variable offset is insufficient. Figure 2 It can be seen that the offset of 2399.24mW from the optimal position is between 4.5-5um. According to the slope, 4.5+(2399.24-3214.351) / (2325.453-3214.351)*(5-4.5)=4.96 is calculated, so the Y axis needs to be moved up by 4.96um. Similarly, if the X axis has also shifted during the solidification process, the offset on the X axis can be determined by the first change relationship between the highest power during the solidification process, the power after solidification, and the optical fiber output power in the X axis direction and the offset from the optimal position.

[0048] S17: Adjust the target position by the offset.

[0049] S18: Control welding at the adjusted target position.

[0050] Thus, after adjusting the target position by the offset, welding can be performed according to the adjusted target position. Figure 2 In this way, the corresponding relationship between the change of the current optical fiber output power and the current offset from the optimal position is recorded in real time, and the second change relationship of the current welding optical fiber output power changing with time is recorded.

[0051] S19: Determine whether the difference between the current optical power and the optimal alignment power is within the first preset range.

[0052] If the judgment result is positive, it means that the welding is successful, and the welding of the current laser chip and the current optical fiber is ended; if the judgment result is negative, it means that the target position still needs to be adjusted, and step S20 is executed.

[0053] S20: Update the first change relationship.

[0054] Therefore, the first change relationship is updated according to the current optical fiber output power and the current offset from the optimal position recorded in step S18, and then the process returns to step S12 to redetermine the target position and perform the next welding.

[0055] The above steps S12 to S20 to complete the welding of the current laser chip and the current optical fiber are only an exemplary description. It can be understood that the welding between the next laser chip and the next optical fiber can be completed by continuing to go through steps S12 to S20, wherein, according to the specific welding situation, steps S16 to step S20, or step S20 may not be specifically executed.

[0056] In summary, the present invention obtains the calculated offset by automatic and rapid calculation, and there is no need for manual adjustment based on the operator's experience, thereby improving the efficiency of welding after the laser device is coupled; the present invention overcomes the problem of increased risk of material damage caused by multiple melting and solidification of the solder; since the present invention is implemented through automation, it can be set up in a closed area to avoid safety risks caused by operator misoperation during the welding laser melting solder process.

[0057] Computer device embodiment:

[0058] The computer device of this embodiment includes a processor and a memory. The memory stores a computer program. When the processor executes the computer program, the above-mentioned optical fiber coupling and welding method embodiment is implemented.

[0059] The computer device may include but is not limited to a processor and a memory. Those skilled in the art will appreciate that the computer device may include more or fewer components, or a combination of certain components, or different components, for example, the computer device may also include input and output devices, network access devices, buses, etc.

[0060] For example, the processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microcontroller or any conventional processor, etc. The processor is the control center of a computer device, and uses various interfaces and lines to connect various parts of the entire computer device.

[0061] The memory can be used to store computer programs and / or modules. The controller realizes various functions of the computer device by running or executing the computer programs and / or modules stored in the memory, and calling the data stored in the memory. For example, the memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function (such as a sound receiving function, a sound conversion to text function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, text data, etc.), etc. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Med ia Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (FlashCard), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0062] Computer readable storage medium embodiment:

[0063] If the module integrated in the computer device of the above embodiment is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the implementation of all or part of the process of the optical fiber coupling and welding method embodiment can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the controller, the steps of the optical fiber coupling and welding method embodiment can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The storage medium may include: any entity or device capable of carrying computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, RandomAccess Memory), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electric carrier signals and telecommunication signals.

[0064] Computer program product embodiment:

[0065] The computer program product of this embodiment includes computer instructions, which are stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes each step of the above-mentioned optical fiber coupling and welding method embodiment.

[0066] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. For example, when obtaining the first change relationship in step S11, the optical fiber may be moved from a position a certain distance away from the optimal position to the optimal position by controlling the motor. In this process, the optical fiber output power and the offset from the optimal position are synchronously collected. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for welding optical fibers after coupling, characterized in that: The following steps are involved: Acquire a first variation relationship between the optical fiber output power and the offset from the optimal position; Controlling welding at a target position, and recording a second variation relationship between the optical fiber output power and time; Determining the highest power during the solidification process and the power after solidification in the second variation relationship; When it is determined that the difference between the post-coagulation power and the best alignment power in the first variation relationship is not within a first preset range, a fitting operation is performed according to the highest power in the coagulation process, the post-coagulation power and the first variation relationship to obtain a calculated offset for moving to an optimal position corresponding to the best alignment power; adjusting the target position by the calculated offset; Controlling welding to be performed at the adjusted target position.

2. The optical fiber coupling and welding method according to claim 1, characterized in that: The control records the corresponding relationship between the current optical fiber output power and the current offset from the optimal position when welding is performed at the adjusted target position, and after welding is completed, determines whether the difference between the current optical power collected after welding is completed and the optimal alignment power is within a first preset time range, if not, updates the first change relationship based on the corresponding relationship between the current optical fiber output power and the current offset from the optimal position.

3. The optical fiber coupling and welding method according to claim 1, characterized in that: The first change relationship between the optical fiber output power and the offset from the optimal position in the X-axis and Y-axis directions is obtained.

4. The optical fiber coupling and welding method according to claim 3, characterized in that: When a fitting operation is performed according to the highest power in the coagulation process, the power after coagulation and the first change relationship to obtain a calculated offset for moving to an optimal position corresponding to the optimal alignment power, the method includes: When it is determined that the difference between the highest power of the coagulation process and the optimal alignment power is within a second preset range and the post-coagulation power is less than a first preset percentage of the optimal alignment power, it is determined that the Y-axis variable needs to be compensated; When it is determined that the difference between the highest power of the coagulation process and the post-coagulation power is within a third preset range, and both the post-coagulation power and the highest power of the coagulation process are less than a second preset percentage of the optimal alignment power and greater than a third preset percentage of the optimal alignment power, it is determined that the Y-axis variable needs to be compensated; When it is determined that both the highest power during the coagulation process and the power after coagulation are less than the optimal alignment power, and the highest power during the coagulation process is greater than a fourth preset percentage of the power after coagulation, it is determined that the X-axis variable and the Y-axis variable need to be compensated; When it is determined that the difference between the highest power of the coagulation process and the post-coagulation power is less than the fourth preset range, and both the highest power of the coagulation process and the post-coagulation power are less than the fifth preset percentage of the optimal alignment power, it is determined that the X-axis variable and the Y-axis variable need to be compensated.

5. A computer device comprising a processor and a memory, characterized in that: The memory stores a computer program, and when the computer program is executed by the processor, the optical fiber coupling and welding method according to any one of claims 1 to 4 is implemented.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the optical fiber coupling and welding method described in any one of claims 1 to 4 is implemented.

7. A computer program product comprising computer instructions, characterized in that: When the computer instructions are executed by a processor, the optical fiber coupling and welding method described in any one of claims 1 to 4 is implemented.

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