Coupling method of optical module collimating lens and calibration system and method of coupling machine

Abstract

The present invention discloses a coupling method for a collimating lens of an optical module and a calibration system and method for a coupling machine. The calibration method includes: fixing a dedicated standard component on a device fixture of the coupling machine, connecting a light source to a fiber optic adapter, allowing light emitted by the light source to be incident on a beam analyzer through a collimating lens, and recording the first coordinate of the collimated light spot on the beam analyzer; flipping the dedicated standard component 180 degrees with the collimated light as the axis and fixing it on the device fixture of the coupling machine, allowing light emitted by the light source to be incident on the beam analyzer through a collimating lens, and recording the second coordinate of the collimated light spot on the beam analyzer; calculating the midpoint coordinates of the first and second coordinates, and calculating the target position of the collimated light spot coupling after calibration based on the difference between the distance from the optical center of the collimating lens of the standard component to the positioning surface of the device fixture and the distance from the optical center of the collimating lens of the product to be coupled to the positioning surface of the device fixture. The calibration method of the present invention can greatly improve the angular accuracy of the collimated light spot.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical communications, and in particular relates to a coupling method for an optical module collimating lens and a calibration system and method for a coupling machine. Background Art

[0002] With the development of the optical communications industry, the amount of data required to be transmitted is increasing, placing increasing demands on the transmission speeds of optical modules. In recent years, the technology of multiplexing multiple wavelengths of light directly within an optical module into one channel for transmission over optical fiber has become increasingly widespread. Typical products include the 4x25G, 4x50G, and 4x100G single-mode products currently shipping in large quantities. Compared to traditional coaxial products, multiplexed products are more complex in structure and optical path design, and the optical coupling process is also more challenging.

[0003] Figure 1 This is a typical four-way multiplexing optical transmitter submodule (TOSA). Figure 1 The typical optical coupling steps of the TOSA shown are as follows:

[0004] 1. Passive mounting laser 2 and optical multiplexer 4 on device housing 1;

[0005] 2. Power on the laser 2 of one channel to make it emit light, adjust the collimating lens 3 of the corresponding channel to collimate the light emitted by the laser 2 and fix the collimating lens 3;

[0006] 3. Repeat step 2 to fix the collimating lenses 3 of the other three channels;

[0007] 4. Passively fix the optical isolator 6 and the optical fiber adapter 7 on the device housing 1;

[0008] Power on the four-channel laser 2, adjust the position of the converging lens 5 and use an optical power meter to monitor the light coming out of the fiber optic adapter 7, so that the light coming out of the four channels through the fiber optic adapter 7 meets the specification requirements, and then fix the converging lens 5 to complete the coupling.

[0009] The collimating lens is fixed Figure 1 One of the key steps in the coupling process for the four-way multiplexed optical transmitter submodule shown is ensuring minimal angular deviation of the collimated light exiting the collimating lens. This is the primary challenge in collimating lens coupling. To ensure this angular deviation, machine calibration is crucial, and a robust method for this has been lacking.

[0010] Usually the machine is well coupled and the optical power of the coupled product meets the specification requirements (usually products with high optical coupling efficiency of each channel are selected, such as Figure 1The converging lens, optical isolator and fiber adapter of the product (as shown) are removed (other components are retained) and used as standard parts to calibrate the machine to ensure the stability of the machine and ensure that the coupled collimated light can basically meet the coupling requirements of the coupling process.

[0011] The schematic diagram of the coupled machine calibration is as follows Figure 2 As shown, the steps for coupling machine calibration are as follows:

[0012] 1. Install the standard component 8 on the device fixture 91 of the coupling machine 9 and fix it;

[0013] 2. Power on the standard component 8 to make it emit collimated light, and record the coordinates of the center of the collimated light spot on the beam profiler 10 (this coordinate is the target position of the coupling light spot of the subsequent product).

[0014] 3. Remove the standard parts to complete the coupling machine calibration.

[0015] The above coupling machine calibration method usually uses products with relatively high coupling efficiency as standard parts, which can basically ensure that most products can complete coupling smoothly. However, it is not certain whether the collimated light of this standard part has angle deviation and how much the angle deviation is. In addition, the standard part usually uses one surface of the product as the positioning surface 81 to be assembled on the coupling machine for positioning, such as Figure 3 As shown, if the positioning surface has a large inclination angle, it will also have a relatively large impact on the calibration of the optical path, thereby affecting the final coupling efficiency and even causing coupling failure. Summary of the Invention

[0016] The purpose of the present invention is to overcome the defects of the prior art and provide a standard component and a method for manufacturing the standard component, as well as a coupling method for the collimating lens of an optical module and a calibration system and method for a coupling machine. The calibration method of the present invention can greatly improve the angle accuracy of the collimated light spot and reduce the angular deviation of the collimated light spot.

[0017] The technical solution of the present invention is implemented as follows: The present invention discloses a standard component, which consists of a shell, a collimating lens and a fiber optic adapter. The fiber optic adapter is connected to the shell, and the collimating lens is fixed on the shell. The shell is provided with a first positioning surface and a second positioning surface for cooperating with a coupling machine for positioning, and the first positioning surface and the second positioning surface are parallel to each other.

[0018] Furthermore, the shell includes a bottom wall and a first side wall, a second side wall and a third side wall extending upward from the bottom wall, the first side wall is parallel to the second side wall, the third side wall is perpendicular to the first side wall and the second side wall, the outer side surface of the first side wall is a first positioning surface, the outer side surface of the second side wall is a second positioning surface, the optical fiber adapter is connected to the third side wall, the collimating lens is fixed on the bottom wall and is located at the center of the first positioning surface and the second positioning surface, and the third side wall is provided with a mounting hole for inserting the optical fiber adapter.

[0019] Furthermore, the optical axis of the collimating lens, the central axis of the fiber core of the optical fiber adapter, and the central axis of the housing are located on the same straight line.

[0020] The present invention discloses a method for manufacturing a standard part, comprising the following steps:

[0021] S1) connecting the housing and the optical fiber adapter to form a first assembly;

[0022] S2) fixing the first component on a device fixture of a coupling machine so that the first positioning surface of the housing is in mating contact with the positioning surface of the device fixture;

[0023] S3) Connect the fiber optic adapter to a light source. The light emitted by the light source is incident on the beam profiler through a collimating lens. By monitoring the position of the light spot on the beam profiler, the position of the collimating lens is adjusted so that the center of the light spot coincides with the preset target coupling position (X0, Y0). The collimating lens is then fixed to the first component to form a standard component.

[0024] Furthermore, the method for determining the target coupling position (X0, Y0) is as follows: remove the converging lens, optical isolator and optical fiber adapter from a light emitting sub-module that is coupled and whose optical power indicators after coupling meet the specification requirements to form a second component, then install the second component on the device fixture and power on one of the lasers, record the position of the center of the light spot through a beam analyzer, and use this position as the target coupling position (X0, Y0) for making a standard part.

[0025] Furthermore, the method for manufacturing the standard component of the present invention further comprises the following steps:

[0026] Fix the standard component on the device fixture of the coupling machine so that the first positioning surface of the standard component contacts the positioning surface of the device fixture. Connect the light source to the fiber adapter. The light emitted by the light source passes through the collimating lens and enters the beam profiler. Record the position of the collimated light spot on the beam profiler (X1, Y1).

[0027] The standard component is flipped 180 degrees around the collimated light axis and then fixed on the device fixture of the coupling machine, so that the second positioning surface of the standard component contacts the positioning surface of the device fixture. The light emitted by the light source passes through the collimating lens and is incident on the beam profiler. The position of the collimated light spot on the beam profiler (X2, Y2) is recorded.

[0028] Determine whether the distance between position (X1, Y1) and position (X2, Y2) is less than the set value. If the distance between position (X1, Y1) and position (X2, Y2) is greater than the set value, use the coordinates ((X1+X2) / 2, (Y1+Y2) / 2) as the new target coupling position, remove the collimating lens of the standard component, repeat steps S2) and S3) to recouple the collimating lens so that the center of the light spot coincides with the new target coupling position.

[0029] The present invention discloses a calibration system for an optical module collimating lens coupling machine, comprising a light source and the standard component as described above, wherein the optical fiber adapter of the standard component is connected to the light source, and the collimating lens of the standard component is used to collimate the light emitted by the light source and to input the collimated light into a beam analyzer. When the standard component is fixed on a device fixture of the coupling machine and a first positioning surface of the standard component is in contact with a positioning surface of the device fixture, the beam analyzer is used to receive the collimated light and obtain a first position of the center of the collimated light spot on the beam analyzer. When the standard component is fixed on the device fixture of the coupling machine and a second positioning surface of the standard component is in contact with a positioning surface of the device fixture, the beam analyzer is used to receive the collimated light and obtain a second position of the center of the collimated light spot on the beam analyzer.

[0030] Furthermore, the calibration system of the optical module collimating lens coupling machine also includes a calculation module, which is used to calculate the midpoint coordinates ((X1+X2) / 2, (Y1+Y2) / 2) of the first position (X1, Y1) and the second position (X2, Y2), and calculate the target position of the collimated light spot coupling after calibration based on the difference between the distance from the center of the collimating lens of the standard part to the positioning surface of the device fixture and the distance from the center of the collimating lens of the product to be coupled to the positioning surface of the device fixture.

[0031] The present invention discloses a calibration method for an optical module collimating lens coupling machine, comprising the following steps:

[0032] Fix the standard component described above to the device fixture of the coupling machine so that the first positioning surface of the standard component contacts the positioning surface of the device fixture. Connect the optical fiber adapter to the light source. The light emitted by the light source passes through the collimating lens and enters the beam profiler. Record the position (X1, Y1) of the collimated light spot on the beam profiler.

[0033] The standard component is flipped 180 degrees around the collimated light axis and then fixed on the device fixture of the coupling machine, so that the second positioning surface of the standard component contacts the positioning surface of the device fixture. The light emitted by the light source passes through the collimating lens and is incident on the beam profiler. The position of the collimated light spot on the beam profiler (X2, Y2) is recorded.

[0034] Calculate the midpoint coordinates ((X1+X2) / 2, (Y1+Y2) / 2) between the position (X1, Y1) and the position (X2, Y2). Based on the difference between the distance from the optical center of the collimating lens of the standard part to the positioning surface of the device fixture and the distance from the optical center of the collimating lens of the product to be coupled to the positioning surface of the device fixture, calculate the target position of the collimated light spot coupling after calibration.

[0035] Furthermore, when the standard part and the product to be coupled are respectively fixed on the device fixture of the coupling machine, the distance from the optical center of the collimating lens of the standard part to the positioning surface of the device fixture is L1, and the distance from the optical center of the collimating lens of the product to be coupled to the positioning surface of the device fixture is L2. L2-L1=a, and the target position of the collimated light spot coupling after calibration is calculated based on a. The target position of the collimated light spot coupling after calibration is ((X1+X2) / 2, (Y1+Y2) / 2-a).

[0036] The present invention discloses a coupling method for a collimating lens of an optical module, comprising the following steps:

[0037] The coupling machine is calibrated using the calibration method described above to obtain the target position of the collimated light spot coupling after calibration;

[0038] Fix the product to be coupled with the collimating lens on the device fixture of the calibrated coupling machine, power on the laser of one of the channels to make the laser emit light, and the light emitted by the laser is incident on the beam profiler through the collimating lens of the corresponding channel. Adjust the position of the collimating lens of the corresponding channel so that the center of the light spot coincides with the target position of the calibrated collimating light spot coupling, and then fix the collimating lens of the corresponding channel to complete the coupling of the collimating lens of the corresponding channel.

[0039] The present invention has at least the following beneficial effects:

[0040] The present invention adopts a dedicated standard component and a calibration solution coordinated with the dedicated standard component, which can greatly improve the angle accuracy of the collimated light spot and reduce the angular deviation of the collimated light spot.

[0041] The solution of the present invention is simple to calibrate and can greatly improve the optical power coupling efficiency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0043] Figure 1 This is a typical optical path structure diagram of a four-way multiplexing optical transmission submodule;

[0044] Figure 2 Schematic diagram of calibrating a coupling machine using standard parts;

[0045] Figure 3 Schematic diagram of positioning the standard parts on the coupling machine;

[0046] Figure 4 A schematic structural diagram of a dedicated standard component provided in an embodiment of the present invention;

[0047] Figure 5 for Figure 4 side view.

[0048] In the drawings, 11 is the shell, 111 is the first positioning surface, 112 is the second positioning surface, 113 is the central axis of the shell, 22 is the collimating lens, 221 is the optical axis of the collimating lens, 33 is the optical fiber adapter, and 331 is the central axis of the fiber core of the optical fiber adapter. DETAILED DESCRIPTION

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0050] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0051] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features; in the description of the present invention, unless otherwise specified, "plurality" or "several" means two or more.

[0052] Example 1

[0053] See also Figure 4 and Figure 5 An embodiment of the present invention provides a standard component, which consists of a shell 11, a collimating lens 22 and a fiber optic adapter 33. The fiber optic adapter 33 is connected to the shell 11, and the collimating lens 22 is fixed on the shell 11. The shell 11 is provided with a first positioning surface 111 and a second positioning surface 112 for cooperating with the coupling machine for positioning. The first positioning surface 111 and the second positioning surface 112 are parallel to each other.

[0054] During installation, the first positioning surface 111 and the second positioning surface 112 are respectively positioned and installed in close contact with the positioning surfaces of the coupling machine component fixture.

[0055] Furthermore, the shell 11 includes a bottom wall and a first side wall, a second side wall and a third side wall extending upward from the bottom wall, the first side wall is parallel to the second side wall, the third side wall is perpendicular to the first side wall and the second side wall, the outer side surface of the first side wall is a first positioning surface 111, the outer side surface of the second side wall is a second positioning surface 112, the optical fiber adapter 33 is connected to the third side wall, the collimating lens 22 is fixed on the bottom wall and is located at the center of the first positioning surface 111 and the second positioning surface 112, and the third side wall is provided with a mounting hole for inserting the optical fiber adapter 33.

[0056] Further, from Figure 5 As shown, the optical axis 221 of the collimating lens, the central axis 331 of the fiber core of the optical fiber adapter, and the central axis 113 of the housing are located on the same straight line 44, that is, the optical axis 221 of the collimating lens, the central axis 331 of the fiber core of the optical fiber adapter, and the central axis 113 of the housing coincide with each other.

[0057] See also Figure 3 and Figure 4 The distance L3 between the central axis 113 of the housing and the first positioning surface 111 is equal to the distance L4 between the central axis 113 of the housing and the second positioning surface 112 .

[0058] The distance L6 between the central axis 113 of the housing and the upper end surface of the housing is equal to the distance L5 between the central axis 113 of the housing and the upper end surface of the housing.

[0059] Example 2

[0060] The embodiment of the present invention discloses a method for manufacturing a standard part, comprising the following steps:

[0061] S1) connecting the housing 11 and the optical fiber adapter 33 to form a first assembly;

[0062] S2) fixing the first component to a device fixture of a coupling machine so that the first positioning surface 111 of the housing 11 is in close contact with the positioning surface of the device fixture;

[0063] S3) Connect the fiber optic adapter 33 to a light source. The light emitted by the light source passes through the collimating lens 22 and enters the beam profiler. By monitoring the position of the light spot on the beam profiler, the position of the collimating lens 22 is adjusted to collimate the light exiting the fiber optic adapter 33 (i.e., adjust the center of the collimating light spot to the preset target coupling position (X0, Y0)). Then, the collimating lens 22 is fixed to the first component to form a standard component.

[0064] Furthermore, the method for determining the target coupling position (X0, Y0) is as follows: remove the converging lens, optical isolator and fiber adapter 33 (i.e. Figure 1 The product shown removes the converging lens, optical isolator and fiber adapter 33, and retains other components to form a second component. The second component is then mounted on a device fixture and one of the lasers is powered on. The position of the center of the light spot is recorded on a beam profiler and this position is used as the target coupling position (X0, Y0) for making a standard part.

[0065] Furthermore, the method for manufacturing the standard component of the present invention further comprises the following steps:

[0066] Fix the standard component to the device fixture of the coupling machine so that the first positioning surface 111 of the standard component contacts the positioning surface of the device fixture. Connect the light source to the fiber adapter 33. The light emitted by the light source passes through the collimating lens 22 and enters the beam profiler. The position (X1, Y1) of the collimated light spot on the beam profiler is recorded.

[0067] The standard component is flipped 180 degrees around the collimated light axis and then fixed to the device fixture of the coupling machine, so that the second positioning surface 112 of the standard component is in contact with the positioning surface of the device fixture. The light emitted by the light source passes through the collimating lens 22 and is incident on the beam profiler. The position (X2, Y2) of the collimated light spot on the beam profiler is recorded.

[0068] Determine whether the distance between the position (X1, Y1) and the position (X2, Y2) is less than the set value. If the distance between the position (X1, Y1) and the position (X2, Y2) is greater than the set value, use the coordinates ((X1+X2) / 2, (Y1+Y2) / 2) as the new target coupling position, remove the collimating lens 22 of the standard component, repeat steps S2) and S3) to recouple the collimating lens 22, and make the center of the light spot coincide with the new target coupling position ((X1+X2) / 2, (Y1+Y2) / 2).

[0069] Example 3

[0070] An embodiment of the present invention discloses a calibration system for a coupling machine of an optical module collimating lens 22, including a light source and a standard component as described in Example 1. The optical fiber adapter 33 of the standard component is connected to the light source. The collimating lens 22 of the standard component is used to collimate the light emitted by the light source and to incident the collimated light on a beam analyzer. When the standard component is fixed on a device fixture of the coupling machine and the first positioning surface 111 of the standard component is in contact with the positioning surface of the device fixture, the beam analyzer is used to receive the collimated light and obtain a first position of the center of the collimated light spot on the beam analyzer. When the standard component is fixed on the device fixture of the coupling machine and the second positioning surface 112 of the standard component is in contact with the positioning surface of the device fixture, the beam analyzer is used to receive the collimated light and obtain a second position of the center of the collimated light spot on the beam analyzer.

[0071] The calibration system of the optical module collimating lens 22 coupling machine also includes a calculation module, which is used to calculate the midpoint coordinates ((X1+X2) / 2, (Y1+Y2) / 2) of the first position (X1, Y1) and the second position (X2, Y2), and calculate the target position of the collimated light spot coupling after calibration based on the difference between the distance from the optical center of the collimating lens 22 of the standard part to the positioning surface of the device fixture and the distance from the optical center of the collimating lens 22 of the product to be coupled to the positioning surface of the device fixture.

[0072] Furthermore, when the standard part and the product to be coupled are respectively fixed on the device fixture of the coupling machine, the distance from the optical center of the collimating lens 22 of the standard part to the positioning surface of the device fixture is L1, and the distance from the optical center of the collimating lens 22 of the product to be coupled to the positioning surface of the device fixture is L2, L2-L1=a, and the target position of the collimated light spot coupling after calibration is calculated based on a. The target position of the collimated light spot coupling after calibration is ((X1+X2) / 2, (Y1+Y2) / 2-a).

[0073] The computing module can be a computer or a processor, etc.

[0074] The calculation module can be connected to a beam profiler. The beam profiler can be connected to a computer display to display the beam spot.

[0075] Example 4

[0076] The embodiment of the present invention discloses a method for calibrating an optical module collimating lens 22 coupled to a machine, comprising the following steps:

[0077] Fix the standard component described in Example 1 on the device fixture of the coupling machine. Figure 4 The standard component shown is positioned with the lens side facing upward, with the first positioning surface 111 of the standard component mating with the positioning surface of the device fixture. A light source is connected to the fiber adapter 33, and the light emitted by the light source is incident on the beam profiler through the collimating lens 22. The position (X1, Y1) of the collimated light spot on the beam profiler is recorded.

[0078] The standard component is turned 180 degrees with the collimated light as the axis and then fixed on the device fixture of the coupling machine. Figure 4 The standard component shown is positioned with the lens side facing downward, so that the second positioning surface 112 of the standard component is in contact with the positioning surface of the device fixture. The light emitted by the light source passes through the collimating lens 22 and is incident on the beam profiler, and the position (X2, Y2) of the collimated light spot on the beam profiler is recorded.

[0079] The midpoint coordinates ((X1+X2) / 2, (Y1+Y2) / 2) of the position (X1, Y1) and the position (X2, Y2) are calculated. Based on the difference between the distance from the optical center of the collimating lens 22 of the standard part to the positioning surface of the device fixture and the distance from the optical center of the collimating lens 22 of the product to be coupled to the positioning surface of the device fixture, the target position of the collimated light spot coupling after calibration is calculated.

[0080] Furthermore, when the standard part and the product to be coupled are respectively fixed on the device fixture of the coupling machine, the distance from the optical center of the collimating lens 22 of the standard part to the positioning surface of the device fixture is L1, and the distance from the optical center of the collimating lens 22 of the product to be coupled to the positioning surface of the device fixture is L2, L2-L1=a, and the target position of the collimated light spot coupling after calibration is calculated based on a. The target position of the collimated light spot coupling after calibration is ((X1+X2) / 2, (Y1+Y2) / 2-a).

[0081] One embodiment is: the distance from the optical center of the special standard collimating lens 22 to the positioning surface of the device housing fixture is equal to the distance from the optical center of the collimating lens 22 of the actual product to be coupled to the positioning surface of the device housing fixture, and the target position of the collimated light spot coupling after calibration is the coordinate ((X1+X2) / 2, (Y1+Y2) / 2).

[0082] Normally, it is desired that the positions (X1, Y1) and (X2, Y2) of the two recorded light spots are as close as possible. If the positions (X1, Y1) and (X2, Y2) are relatively far apart, for example, greater than 1 mm, the coordinates ((X1+X2) / 2, (Y1+Y2) / 2) can be used as the target coupling position of the collimated light of the standard component. The steps for making the standard component can be repeated, and the collimating lens 22 of the standard component can be recoupled to remake the standard component.

[0083] Example 5

[0084] The embodiment of the present invention discloses a coupling method of a collimating lens 22 of an optical module, comprising the following steps:

[0085] The coupling machine is calibrated using the calibration method described in the fourth embodiment to obtain the target position of the collimated light spot coupling after calibration;

[0086] Fix the product to be coupled with the collimating lens 22 on the device fixture of the calibrated coupling machine, power on the laser of one of the channels to make the laser emit light, and the light emitted by the laser is incident on the beam profiler through the collimating lens 22 of the corresponding channel. By monitoring the light spot on the beam profiler, adjust the position of the collimating lens 22 of the corresponding channel so that the center of the light spot coincides with the target position of the coupling of the calibrated collimating light spot, and then fix the collimating lens 22 of the corresponding channel to complete the coupling of the collimating lens 22 of the corresponding channel.

[0087] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for manufacturing a standard part, characterized in that: The steps include: S1) connecting the housing and the optical fiber adapter to form a first assembly; S2) fixing the first component on a device fixture of a coupling machine so that the first positioning surface of the housing is in mating contact with the positioning surface of the device fixture; S3) Connecting a light source to the fiber optic adapter, the light emitted by the light source is incident on the beam profiler through a collimating lens. By monitoring the position of the light spot on the beam profiler, the position of the collimating lens is adjusted so that the center of the light spot coincides with the preset target coupling position (X0, Y0). The collimating lens is then fixed to the first component to form a standard component. Fix the standard component on the device fixture of the coupling machine so that the first positioning surface of the standard component contacts the positioning surface of the device fixture. Connect the light source to the fiber adapter. The light emitted by the light source passes through the collimating lens and enters the beam profiler. Record the position of the collimated light spot on the beam profiler (X1, Y1). The standard component is flipped 180 degrees around the collimated light axis and then fixed on the device fixture of the coupling machine, so that the second positioning surface of the standard component contacts the positioning surface of the device fixture. The light emitted by the light source passes through the collimating lens and is incident on the beam profiler. The position of the collimated light spot on the beam profiler is recorded (X2, Y2). Determine whether the distance between position (X1, Y1) and position (X2, Y2) is less than the set value. If the distance between position (X1, Y1) and position (X2, Y2) is greater than the set value, set the coordinates ((X1+X2) / 2, (Y1+Y2) / 2) as the new target coupling position, remove the collimating lens of the standard component, repeat steps S2) and S3) to re-couple the collimating lens, and make the center of the light spot coincide with the new target coupling position.

2. The method for producing a standard component according to claim 1, wherein: The target coupling position (X0, Y0) is determined as follows: Remove the converging lens, optical isolator, and fiber adapter from a well-coupled optical transmitter submodule that meets the post-coupling optical power specification to form a second assembly. The second assembly is then mounted on a device fixture and one of the lasers is powered on. The position of the light spot center is recorded using a beam profiler and used as the target coupling position (X0, Y0) for making the standard component.

3. The method for manufacturing a standard component according to claim 1, wherein: The shell includes a bottom wall and a first side wall, a second side wall and a third side wall extending upward from the bottom wall, the first side wall is parallel to the second side wall, the third side wall is perpendicular to the first side wall and the second side wall, the outer side surface of the first side wall is a first positioning surface, the outer side surface of the second side wall is a second positioning surface, the optical fiber adapter is connected to the third side wall, the collimating lens is fixed on the bottom wall and is located at the center of the first positioning surface and the second positioning surface, and the third side wall is provided with a mounting hole for inserting the optical fiber adapter.

4. The method for producing a standard component according to claim 1 or 3, wherein: The optical axis of the collimating lens, the central axis of the fiber core of the optical fiber adapter, and the central axis of the housing are located on the same straight line.

5. A calibration method for an optical module collimating lens coupling machine, characterized in that: A standard component is used, which consists of a housing, a collimating lens, and a fiber optic adapter. The housing is provided with a first positioning surface and a second positioning surface for cooperating with the coupling machine, and the first positioning surface and the second positioning surface are parallel to each other. The fiber optic adapter is connected to the housing, and the collimating lens is fixed to the housing. The calibration method includes the following steps: Fix the standard component on the device fixture of the coupling machine so that the first positioning surface of the standard component contacts the positioning surface of the device fixture. Connect the optical fiber adapter to a light source. The light emitted by the light source is incident on the beam profiler through a collimating lens. The position (X1, Y1) of the collimated light spot on the beam profiler is recorded. The standard component is flipped 180 degrees around the collimated light axis and then fixed on the device fixture of the coupling machine, so that the second positioning surface of the standard component contacts the positioning surface of the device fixture. The light emitted by the light source passes through the collimating lens and is incident on the beam profiler. The position of the collimated light spot on the beam profiler is recorded (X2, Y2). Calculate the midpoint coordinates ((X1+X2) / 2,(Y1+Y2) / 2) between the position (X1, Y1) and the position (X2, Y2). Based on the difference between the distance from the optical center of the collimating lens of the standard part to the positioning surface of the device fixture and the distance from the optical center of the collimating lens of the product to be coupled to the positioning surface of the device fixture, calculate the target position of the collimated light spot coupling after calibration.

6. The method for calibrating an optical module collimating lens coupling machine according to claim 5, wherein: When the standard part and the product to be coupled are respectively fixed on the device fixture of the coupling machine, the distance from the optical center of the collimating lens of the standard part to the positioning surface of the device fixture is L1, and the distance from the optical center of the collimating lens of the product to be coupled to the positioning surface of the device fixture is L2. L2-L1=a. The target position of the collimated light spot coupling after calibration is calculated based on a. The target position of the collimated light spot coupling after calibration is ((X1+X2) / 2, (Y1+Y2) / 2-a).

7. A method for coupling a collimating lens of an optical module, characterized in that: The steps include: Calibrate the coupling machine using the calibration method according to any one of claims 5 to 6 to obtain the target position of the collimated light spot coupling after calibration; Fix the product to be coupled with the collimating lens on the device fixture of the calibrated coupling machine, power on the laser of one of the channels to make the laser emit light, and the light emitted by the laser is incident on the beam profiler through the collimating lens of the corresponding channel. Adjust the position of the collimating lens of the corresponding channel so that the center of the light spot coincides with the target position of the calibrated collimating light spot coupling, and then fix the collimating lens of the corresponding channel to complete the coupling of the collimating lens of the corresponding channel.

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