Optical module testing device

Abstract

The utility model relates to an optical module testing device, which comprises a base, a rotary swing testing structure and a mounting structure for mounting a testing circuit board, the mounting structure and the rotary swing testing structure are both arranged on the base, and the rotary swing testing structure comprises a rotating part and a fixing part for mounting a testing optical fiber in a penetrating manner. The fixed part is eccentrically arranged on the rotating part and is located on one side, facing the mounting structure, of the rotating part, and the rotating axis of the rotating part and a connector, connected with the test optical fiber, of the test circuit board are coaxially arranged. The optical module testing device provided by the utility model solves the problem that when a conventional testing platform is used for testing the external coaxial cable of the pcb, the cable is easy to wind to interfere the test.

Description

Technical Field

[0001] The utility model relates to the technical field of optical module testing equipment, and particularly relates to an optical module testing device. Background Technique

[0002] In the type test of optical communication device products, there is a wiggle test. The test process is usually as follows: after connecting the ferrule sleeve, ROSA, and BOSA devices to the communication optical fiber, an external force of non-axial torsion is applied to the connected optical fiber, so that the external force changes uniformly between 360° along the axis of the device, and the corresponding output optical power values are measured. The extreme difference of these optical power values (unit: dBm) is the wiggle value.

[0003] In the existing Wiggle test platform, when the test PCB needs to be externally connected with a coaxial cable, the test platform will cause the coaxial cable to wind, affecting the test process, and the application scenario is relatively limited. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose an optical module testing device, aiming to solve the problem that the existing test platform is prone to cable winding interference during the test when the test PCB is externally connected with a coaxial cable.

[0005] To achieve the above object, an optical module testing device proposed by the utility model includes a base, a swing test structure, and an installation structure for installing a test circuit board. The installation structure and the swing test structure are both arranged on the base. The swing test structure includes a rotating part and a fixed part through which a test optical fiber is installed. The fixed part is eccentrically arranged on the rotating part and is located on the side of the rotating part facing the installation structure. The axis of rotation of the rotating part is coaxially arranged with the joint connecting the test circuit board and the test optical fiber.

[0006] According to some embodiments of the utility model, the axis of rotation of the rotating part extends along the x direction. A guiding structure is arranged on the base, and the guiding structure extends along the x direction. The installation structure is slidably arranged on the guiding structure.

[0007] According to some embodiments of the utility model, the installation structure includes four installation parts, and each installation part has an installation surface for fixing a corner of the test circuit board.

[0008] According to some embodiments of the utility model, there are two guiding structures, and the two guiding structures are arranged oppositely in the y direction. The installation structure further includes four connecting parts slidably arranged on the guiding structures. Each connecting part is connected to the corresponding installation part one by one, and the four connecting parts are arranged in pairs on the guiding structures.

[0009] According to some embodiments of the present utility model, a sliding groove is formed on the connecting portion, the sliding groove extends along the y direction, and the mounting portion is slidably disposed on the sliding groove.

[0010] According to some embodiments of the present utility model, the swing test structure further includes a stepping motor and a transmission assembly, and the stepping motor is connected to the rotating portion through the transmission assembly.

[0011] According to some embodiments of the present utility model, it further includes a detection and calibration structure for calibrating the rotation angle of the stepping motor. The detection and calibration structure is disposed on the base and on the side of the rotating portion facing away from the mounting structure.

[0012] According to some embodiments of the present utility model, the detection and calibration structure includes an optoelectronic detection portion and a calibration portion. The optoelectronic detection portion is disposed on the base, the calibration portion is disposed on the rotating portion and on the side of the rotating portion facing away from the mounting structure, and the moving trajectory of the calibration portion passes through the detection area of the optoelectronic detection portion.

[0013] According to some embodiments of the present utility model, the fixing portion is rotatably mounted on the rotating portion, and the axis direction of the rotation of the fixing portion is parallel to the axis direction of the rotation of the rotating portion.

[0014] According to some embodiments of the present utility model, it further includes a weight for connecting the free end of the test optical fiber.

[0015] The present utility model has at least the following beneficial effects:

[0016] In the present utility model, the mounting structure and the swing test structure are both arranged on the base. The swing test structure includes a rotating part and a fixing part through which a test optical fiber is installed. The fixing part is eccentrically arranged on the rotating part and is located on the side of the rotating part facing the mounting structure. The axis of rotation of the rotating part is coaxially arranged with the joint of the test circuit board connecting the test optical fiber. The eccentric arrangement of the fixing part on the rotating part, combined with the rotation of the rotating part, enables the fixing part to apply a non-axial torsional swing force to the test optical fiber. At the same time, the axis of rotation of the rotating part is coaxially arranged with the joint of the test circuit board connecting the test optical fiber, ensuring that the test optical fiber is only subjected to non-axial torsional swing force and will not be subjected to forces in the up-down and left-right directions, guaranteeing the smooth completion of the test. Since during the Wiggle test, relative rotation between the test optical fiber and the test circuit board is required, in the optical module test device of the present application, the test optical fiber is selected to rotate while the test circuit board remains stationary. When the test circuit board is externally connected to a coaxial cable, the coaxial cable will not rotate, so there will be no problem of cable entanglement. In the existing Wiggle test platform, the test circuit board is selected to rotate. When the test circuit board is externally connected to a coaxial cable, the coaxial cable will rotate with the test circuit board, resulting in the problem of cable entanglement, which in turn interferes with the Wiggle test. The optical module test device provided by the present utility model solves the problem that the existing test platform is prone to cable entanglement interference during the test when the test pcb is externally connected to a coaxial cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 FIG. is a schematic structural diagram of an optical module test device provided by an embodiment of the present utility model;

[0019] Figure 2 For Figure 1 the three-dimensional schematic diagram of the optical module test device in

[0020] Figure 3 For Figure 1 the top view of the optical module test device in

[0021] Description of the reference numerals:

[0022] 100 - Optical module testing device; 1 - Base; 11 - Guiding structure; 2 - Swing testing structure; 21 - Rotating part; 22 - Fixed part; 23 - Stepper motor; 24 - Transmission component; 25 - Bearing; 3 - Mounting structure; 31 - Mounting part; 32 - Connecting part; 321 - Chute; 4 - Detection and calibration structure; 41 - Photoelectric detection part; 42 - Calibration part; 5 - Weight. Detailed implementation manners

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0025] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions conflicts with each other or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0026] The present invention provides an optical module testing device. Figures 1 to 3 This is a specific embodiment of the optical module testing device provided by the present invention.

[0027] As Figure 1 and Figure 2As shown in the figure, an optical module testing device 100 provided by an embodiment of the present invention includes a base 1, a swing testing structure 2, and a mounting structure 3 for mounting a testing circuit board. The mounting structure 3 and the swing testing structure 2 are both arranged on the base 1. The swing testing structure 2 includes a rotating part 21 and a fixing part 22 through which a testing optical fiber is installed. The fixing part 22 is eccentrically arranged on the rotating part 21 and is located on one side of the rotating part 21 facing the mounting structure 3. The axis of rotation of the rotating part 21 is coaxially arranged with the joint connecting the testing optical fiber of the testing circuit board.

[0028] In the present invention, the mounting structure 3 and the swing testing structure 2 are both arranged on the base 1. The swing testing structure 2 includes a rotating part 21 and a fixing part 22 through which a testing optical fiber is installed. The fixing part 22 is eccentrically arranged on the rotating part 21 and is located on one side of the rotating part 21 facing the mounting structure 3. The axis of rotation of the rotating part 21 is coaxially arranged with the joint connecting the testing optical fiber of the testing circuit board. The eccentric arrangement of the fixing part 22 on the rotating part 21, combined with the rotation of the rotating part 21, enables the fixing part 22 to apply a non-axial torsional swing force to the testing optical fiber. At the same time, the axis of rotation of the rotating part 21 is coaxially arranged with the joint connecting the testing optical fiber of the testing circuit board, ensuring that the testing optical fiber is only subjected to non-axial torsional swing force and is not subjected to forces in the up-down and left-right directions, guaranteeing the smooth completion of the test. Since during the Wiggle test, relative rotation between the testing optical fiber and the testing circuit board is required, in the optical module testing device 100 of the present application, the testing optical fiber is selected to rotate while the testing circuit board remains stationary. When the testing circuit board is externally connected to a coaxial cable, the coaxial cable will not rotate, so there will be no problem of cable entanglement. In the existing Wiggle test platform, the testing circuit board is selected to rotate. When the testing circuit board is externally connected to a coaxial cable, the coaxial cable will rotate with the testing circuit board, resulting in cable entanglement problems, which in turn interfere with the Wiggle test. The optical module testing device 100 provided by the present invention solves the problem that the existing test platform is prone to cable entanglement interference during the test when the testing pcb is externally connected to a coaxial cable.

[0029] Since the distances between testing circuit boards of different sizes and the swing testing structure 2 are different, in order to avoid excessive bending and breakage of the free end of the testing optical fiber when passing through the fixing part 22 for installation, it is necessary to ensure a certain distance between the connecting part 32 of the testing optical fiber and the testing circuit board and the fixing part 22. Therefore, in some embodiments, such as Figure 1 and Figure 3As shown, the axis of rotation of the rotating part 21 extends in the x direction. A guiding structure 11 is provided on the base 1, and the guiding structure 11 extends in the x direction. The mounting structure 3 is slidably arranged on the guiding structure 11. With this arrangement, when the size of the test circuit board is large, the mounting structure 3 slides away from the swinging test structure 2, and when the size of the test circuit board is small, the mounting structure 3 slides towards the swinging test structure 2, always keeping the bending angle of the test optical fiber close to 90 degrees, so as to adapt to test circuit boards of more sizes.

[0030] Preferably, there is no limitation on the specific structure of the mounting structure 3, as long as it can ensure that the mounting structure 3 can mount and fix the test circuit board. For example, in some embodiments, as Figure 1 and Figure 3 shown, the mounting structure 3 includes four mounting parts 31, and each mounting part 31 has a mounting surface for fixing a corner of the test circuit board. With this arrangement, by connecting the four mounting parts 31 to the four corners of the test circuit board one by one, the test circuit board is fixed on the base 1. The four-corner fixing method can adapt to test circuit boards of various shapes, thereby improving the applicability of the optical module test device 100, and there is no need to customize different mounting parts for test circuit boards of different shapes, and the cost is lower.

[0031] Furthermore, in some embodiments, as Figure 1 and Figure 3 shown, there are two guiding structures 11, and the two guiding structures 11 are arranged opposite to each other in the y direction. The mounting structure 3 further includes four connecting parts 32 slidably arranged on the guiding structures 11, and each connecting part 32 is connected to the corresponding mounting part 31 one by one. The four connecting parts 32 are arranged in pairs on the guiding structures 11. By sliding each connecting part 32 on the guiding structure 11, the distance between the mounting parts 31 in the x direction can be adjusted, so as to adjust the distance between the test circuit board and the swinging test structure 2, and avoid the test optical fiber from being broken due to excessive bending.

[0032] Even further, in some embodiments, as Figure 1 and Figure 3As shown, a chute 321 is formed on the connecting portion 32. The chute 321 extends in the y direction, and the mounting portion 31 is slidably disposed on the chute 321. With this arrangement, each mounting portion 31 slides on the chute 321 to adjust the distance of each mounting portion 31 in the y direction. By providing the chute 321 and the guiding structure 11, the positions of the mounting portions 31 in the horizontal direction can be adjusted, so that the mounting structure 3 can be adapted to test circuit boards of various sizes and shapes, thereby improving the applicability of the optical module testing device 100.

[0033] In the Wiggle test, it is necessary to test 8 rotation angles of the rotating portion 21 clockwise by 90 degrees, 180 degrees, 270 degrees, and 360 degrees, and counterclockwise by 90 degrees, 180 degrees, 270 degrees, and 360 degrees. Therefore, in some embodiments, as Figure 2 As shown, the wobble test structure 2 further includes a stepping motor 23 and a transmission assembly 24. The stepping motor 23 is connected to the rotating portion 21 through the transmission assembly 24. With this arrangement, since the stepping motor 23 needs multiple steps to rotate one circle, the number of steps required for the stepping motor 23 to rotate one circle is divided into four parts. When the stepping motor 23 rotates one-fourth of the number of steps, it is at the 90-degree position.

[0034] Specifically, the transmission assembly 24 includes two synchronous pulleys and a synchronous belt. The two synchronous pulleys are respectively installed on the drive shaft of the stepping motor 23 and the fixed shaft of the rotating portion 21, and the synchronous belt is wound around the two synchronous pulleys in sequence to realize the driving of the rotating portion 21 to rotate by the stepping motor 23.

[0035] Since there are errors in the rotation of the stepping motor 23 and it cannot be guaranteed that it just rotates one-fourth of the number of steps each time, in some embodiments, as Figure 3 As shown, the optical module testing device 100 further includes a detection and calibration structure 4 for calibrating the rotation angle of the stepping motor 23. The detection and calibration structure 4 is disposed on the base 1 and is located on the side of the rotating portion 21 opposite to the mounting structure 3. With this arrangement, the stepping motor 23 is calibrated by the detection and calibration structure 4 after each test, so as to avoid excessive errors of the stepping motor 23 after long-term testing and affecting the test results.

[0036] Furthermore, in some embodiments, as Figure 3As shown, the detection and calibration structure 4 includes a photoelectric detection part 41 and a calibration part 42. The photoelectric detection part 41 is arranged on the base 1, and the calibration part 42 is arranged on the rotating part 21 and located on the side of the rotating part 21 facing away from the mounting structure 3. The moving track of the calibration part 42 passes through the detection area of the photoelectric detection part 41. With this arrangement, every time the calibration part 42 passes through the photoelectric detection part 41, the current position is taken as the 0-degree position, and every time the stepping motor 23 rotates one-quarter of a step, it is taken as the 90-degree position. Before each test, the stepping motor 23 can be calibrated in this way to reduce the test error, thereby improving the test accuracy.

[0037] It should be noted that two photoelectric detection parts 41 can be provided. The two photoelectric detection parts 41 are arranged opposite to each other in the y direction. When the calibration part 42 passes through one of the photoelectric detection parts 41, the current position is taken as the 0-degree position to calibrate the stepping motor 23, thereby improving the calibration efficiency.

[0038] A fixing hole penetrates through the fixing part 22 for the free end of the test optical fiber to pass through and extend out from the bottom surface of the fixing part 22. Under the influence of gravity, the free end of the test optical fiber will hang below the fixing part 22. In order to prevent the rotation of the rotating part 21 from causing the test optical fiber to wind around the fixing part 22 and affect the test result, in some embodiments, as Figure 2 shown, the fixing part 22 is rotatably installed on the rotating part 21, and the axis direction of the rotation of the fixing part 22 is parallel to the axis direction of the rotation of the rotating part 21. With this arrangement, when the rotating part 21 rotates, since the fixing part 22 is rotatably installed on the rotating part 21, after the test optical fiber is installed and fixed, the center of gravity of the fixing part 22 is biased downward, and the fixing hole always faces downward, so that the test optical fiber remains in a hanging state and will not wind around the fixing part 22, resulting in the test result being affected.

[0039] Specifically, the swing test structure 2 further includes a bearing 25. One of the inner ring and the outer ring of the bearing 25 is connected to the fixing part 22, and the other is connected to the rotating part 21. The rotating installation of the fixing part 22 and the rotating part 21 is realized through the bearing 25.

[0040] Furthermore, since the mass of some test optical fibers is small and has little influence on the center of gravity of the fixing part 22, in some embodiments, as Figure 1As shown, the optical module testing device 100 further includes a weight 5 for connecting to the free end of the test optical fiber. With this arrangement, by connecting the weight 5 to the free end of the test optical fiber, the center of gravity of the fixing part 22 is biased downward, and the fixing hole is always arranged downward. As a result, the test optical fiber always remains in a hanging state under the influence of gravity and will not be wound around the fixing part 22, so as not to affect the test result.

[0041] The foregoing are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An optical module testing device, characterized in that, It includes a base, a swing test structure, and an installation structure for installing a test circuit board. The installation structure and the swing test structure are both arranged on the base. The swing test structure includes a rotating part and a fixed part through which a test optical fiber is installed. The fixed part is eccentrically arranged on the rotating part and is located on the side of the rotating part facing the installation structure. The axis of rotation of the rotating part is coaxially arranged with the joint connecting the test optical fiber of the test circuit board.

2. The optical module testing device according to claim 1, characterized in that, The axis of rotation of the rotating part extends along the x direction. A guiding structure is arranged on the base, and the guiding structure extends along the x direction. The installation structure is slidably arranged on the guiding structure.

3. The optical module testing device according to claim 2, wherein The installation structure includes four installation parts, and each installation part has an installation surface for fixing a corner of the test circuit board.

4. The optical module testing device according to claim 3, wherein, There are two guiding structures, and the two guiding structures are arranged opposite to each other in the y direction. The installation structure further includes four connecting parts slidably arranged on the guiding structures. Each connecting part is correspondingly connected to an installation part, and the four connecting parts are arranged in pairs on the guiding structures.

5. The optical module testing device according to claim 4, characterized in that, A sliding groove is formed in the connecting part, and the sliding groove extends along the y direction. The installation part is slidably arranged on the sliding groove.

6. The optical module testing device according to claim 1, wherein The swing test structure further includes a stepping motor and a transmission component. The stepping motor is connected to the rotating part through the transmission component.

7. The optical module testing device according to claim 6, characterized in that, It further includes a detection and calibration structure for calibrating the rotation angle of the stepping motor. The detection and calibration structure is arranged on the base and is located on the side of the rotating part facing away from the installation structure.

8. The optical module testing device according to claim 7, wherein The detection and calibration structure includes a photoelectric detection part and a calibration part. The photoelectric detection part is arranged on the base, and the calibration part is arranged on the rotating part and is located on the side of the rotating part facing away from the installation structure. The moving trajectory of the calibration part passes through the detection area of the photoelectric detection part.

9. The optical module testing device according to claim 1, wherein The fixed part is rotatably installed on the rotating part, and the axis direction of the rotation of the fixed part is parallel to the axis direction of the rotation of the rotating part.

10. The optical module testing device according to claim 9, wherein, It further includes a weight for connecting the free end of the test optical fiber.

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