A MT-FA test structure and method for optical modules

Abstract

The present invention discloses an MT-FA test structure and method for an optical module, which includes a first linear displacement unit and a second linear displacement unit, both of which are arranged to extend along the X-axis direction, and are arranged in parallel and spaced along the Y-axis direction, the first linear displacement unit is provided with a photodetector unit, the second linear displacement unit is provided with a first fixing unit for fixing an optical fiber array assembly and a second fixing unit for fixing an MT connector and an MPO test jumper, the first fixing unit is connected to the linear displacement unit in a manner displaceable along the Y-axis direction, the second fixing unit is fixedly connected to the linear displacement unit, and the photodetector unit and the first fixing unit are arranged in a one-to-one correspondence. The present invention can improve the test efficiency of MT-FA, maintain the consistency of testing MT-FA, and greatly promote the quality and efficiency improvement of large-scale production of MT-FA.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical modules, and in particular relates to an MT-FA test structure and method for an optical module. Background Art

[0002] With the rapid development of data centers and artificial intelligence (AI) technology, the demand for optical modules has increased significantly. As a key component in the optical fiber communication system, the optical module contains a passive transmission component called MT-FA (Mechanical Transfer-Fiber Array). To ensure product quality and performance, MT-FA components need to undergo rigorous performance testing during the production process.

[0003] At present, the testing method adopted by most manufacturers is to connect the MT connector end face of the product with the MPO (Multi-fiber Push On) test jumper end face, and then use the handheld fiber array FA to adjust the end face angle to align with the photodetector (PD) face of the power meter, and test each channel one by one. However, this testing method has many problems: inconvenient operation, requiring precise manual alignment; poor test stability, manual operation may lead to inconsistent measurement results; low test efficiency, and long test time for each component. These limitations not only affect the accuracy of the test, but also hinder the improvement of product quality and production efficiency.

[0004] With the rapid growth of demand for optical modules, existing testing methods can no longer meet the needs of mass production. Therefore, it has become an urgent need for the industry to develop a more efficient, accurate and stable MT-FA component testing method to support mass production of optical modules and improve overall product quality. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an MT-FA test structure and method for optical modules in response to the technical defects existing in the prior art, which can improve the test efficiency of MT-FA, maintain the consistency of testing MT-FA, and greatly promote the quality and efficiency improvement of large-scale production of MT-FA.

[0006] The technical solution adopted by the present invention to solve its technical problem is: the present invention discloses an MT-FA test structure for an optical module, comprising a first linear displacement unit and a second linear displacement unit, the first linear displacement unit and the second linear displacement unit are both arranged to extend along the X-axis direction, the first linear displacement unit and the second linear displacement unit are arranged in parallel and spaced apart along the Y-axis direction, the first linear displacement unit is provided with a photoelectric detector unit, the second linear displacement unit is provided with a first fixing unit for fixing an optical fiber array assembly and a second fixing unit for fixing an MT connector and an MPO test jumper, the first fixing unit can be connected to the second linear displacement unit in a manner displaceable along the Y-axis direction, the second fixing unit is fixedly connected to the second linear displacement unit, and the photoelectric detector unit and the first fixing unit are arranged in a one-to-one correspondence.

[0007] In a preferred embodiment of the present invention, the second fixing unit includes a bottom plate connected to the displacement end of the second linear displacement unit, a contoured groove base is connected to the bottom plate, a guide boss is provided at one end of the contoured groove base, and a limiting groove is provided at the other end, two spring limit blocks arranged in mirror symmetry are fixedly connected to the contoured groove base, a spring mounting hole penetrating along the Z-axis is provided in the middle of each spring limit block, a positioning feature for fixing the MPO test jumper is provided on the inner end surface of each spring limit block, a through hole extending along the X-axis and communicating with the spring mounting hole is provided on the outer end surface of each spring limit block, a spring is provided in the spring mounting hole, and two fixing brackets for fixing the MT connector are also included, the fixing brackets are arranged in a one-to-one correspondence with the spring limit blocks, each fixing bracket includes a guide hole extending along the Y-axis and cooperating with the guide boss and an L-shaped feature that can pass through the through hole on the spring limit block and extend into the spring mounting hole, one end of the spring contacts the L-shaped feature, and the other end contacts the spring limit block.

[0008] In a preferred embodiment of the present invention, the guide boss includes at least two fixing brackets arranged in a C shape.

[0009] In a preferred embodiment of the present invention, the spring limit block is connected to the contoured groove base so as to be displaceable along the X-axis direction.

[0010] In a preferred embodiment of the present invention, the base plate is connected to the displacement end of the second linear displacement unit via a slide rail bracket.

[0011] In a preferred embodiment of the present invention, the contoured groove base is provided with a guide groove extending along the Y-axis direction, an adjusting rod is slidably connected in the guide groove, the adjusting rod is at least partially located outside the guide groove, and the end of the adjusting rod is connected to a first fixing unit.

[0012] In a preferred embodiment of the present invention, the first fixing unit includes a supporting base fixedly connected to the adjusting rod, and the supporting base is provided with a side positioning block and a fixing screw, the central axis of the fixing screw is perpendicular to the side positioning block, and the end of the optical fiber array is fixed between the fixing screw and the fixing screw.

[0013] In a preferred embodiment of the present invention, the photoelectric detector unit includes a multi-degree-of-freedom adjustment frame, a lens fixing frame and a photoelectric detector, the fixed end of the multi-degree-of-freedom adjustment frame is fixedly connected to the linear displacement unit, the movable end of the multi-degree-of-freedom adjustment frame is connected to the lens fixing frame, and the photoelectric detector is arranged on the lens fixing frame.

[0014] In a preferred embodiment of the present invention, an anti-vibration platform is included, on which the linear displacement unit is arranged.

[0015] The present invention also discloses a method for using an MT-FA test structure for an optical module, comprising the steps of connecting an MPO end face in a test jumper with an MT end face of an MT-FA through a guide pin, pushing open left and right fixed brackets and placing the connected product between two spring limit blocks, wherein the fixed bracket and the spring limit blocks cooperate to fix the connection between the MT connector and the MPO test jumper; placing the optical fiber array head of the MT-FA into a first fixed unit; adjusting a regulating rod so that the length of a fixing device groove is adapted to the slenderness of the product, and locking and adjusting the position through a side screw; adjusting a second linear displacement unit so that the optical fiber array head of the MT-FA is pre-aligned with a photoelectric detector unit, and adjusting the first linear displacement unit and a multi-degree-of-freedom adjustment frame to achieve precise alignment of the optical fiber array head with the photoelectric detector unit.

[0016] The beneficial effects of the present invention are as follows: the MT-FA test structure of the present invention and its use method not only effectively solve the problems of inconvenient operation, poor test stability, low efficiency, etc. in the prior art, but also significantly improve the automation, accuracy and efficiency of the test. Its flexible design makes the test structure have excellent adaptability and versatility, and can meet the testing requirements of different models of products. By realizing one-time multi-channel testing and convenient angle adjustment, the test efficiency and accuracy are greatly improved. These advantages enable the present invention to effectively support the large-scale production of optical modules, meet the rapidly growing market demand, and make important contributions to improving overall product quality and production efficiency, thereby enhancing the competitiveness of enterprises in the field of optical communications.

[0017] First, the test structure of the present invention greatly improves the automation and accuracy of the test by using two linear displacement units and precise fixtures. This not only significantly reduces human operation errors, but also improves the stability and consistency of the test, thereby ensuring the reliability of the test results. It is particularly worth mentioning that the structure can test all channels of the MT-FA at one time, greatly improving the test efficiency, which is crucial to meet the needs of large-scale production.

[0018] Secondly, the design of the present invention cleverly solves the problem of difficult alignment in traditional manual testing. By using the first fixing unit and the second fixing unit, combined with the linear displacement unit and the multi-degree-of-freedom adjustment frame 1, the precise positioning and alignment of the MT connector, the MPO test jumper and the optical fiber array are achieved. More importantly, the placement angle of the optical fiber array FA is adjustable, which greatly facilitates the docking with the receiving surface of the photodetector (PD) and ensures the stability and consistency of the test. This design not only simplifies the operation process, but also significantly improves the accuracy of the test.

[0019] Furthermore, the test structure demonstrates excellent flexibility and adaptability. It is particularly worth emphasizing that different models of MT-FA usually have different fiber lengths, and this structure cleverly solves this problem through an adjustable design. Operators can easily adjust the distance of the structure to adapt to different fiber lengths, thereby achieving accurate testing of various models of MT-FA. This flexibility greatly enhances the versatility of the equipment, enabling it to meet diverse product testing needs.

[0020] In addition, the modular design of the present invention further enhances its adaptability. For example, the adjustable fixed bracket and spring stop block design enable the structure to adapt to MT-FAs of different specifications. This multi-faceted flexibility not only improves the efficiency of equipment use, but also reduces the equipment investment cost of enterprises.

[0021] The present invention also takes full account of the stability problem during the test. By arranging the anti-vibration platform 4 at the bottom, the influence of external vibration on the test results is effectively reduced, and the accuracy and reliability of the test are further improved. This design is of great significance for ensuring the test quality in mass production.

[0022] Finally, the test structure is simple to use and the operation steps are clear, which greatly reduces the skill requirements of the operator and the possibility of human error. This not only helps to improve test efficiency, but also ensures the consistency of test quality, which is crucial to maintaining high quality standards of products. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0024] Figure 1 It is an overall structural assembly diagram of an embodiment of the present invention;

[0025] Figure 2 It is the overall structural parts diagram of an embodiment of the present invention;

[0026] Figure 3 is a diagram of a fixed structure of an optical fiber array according to an embodiment of the present invention;

[0027] Figure 4 yes Figure 3 A partial enlarged view of

[0028] Figure 5 is a schematic diagram of a first fixed unit;

[0029] Figure 6 is a diagram of a fiber length control structure of an optical fiber array according to an embodiment of the present invention;

[0030] Figure 7 It is a structural diagram of the MPO and MT docking profiling groove of an embodiment of the present invention;

[0031] Figure 8 1. It is a top view of the MPO and MT butt-jointing contoured groove according to an embodiment of the present invention;

[0032] In the figure, 1-multi-degree-of-freedom adjustment frame; 2-lens fixing bracket; 3-photoelectric detector; 4-anti-vibration table; 5-slide rail base; 6-slide rail travel limit block; 7-slide rail platform; 8-slide rail bracket; 9-bottom plate; 10-profile groove base; 11-left fixed bracket; 12-right fixed bracket; 13-spring left limit block; 14-spring right limit block; 15-spring; 16-cover plate; 17-left adjusting rod; 18-right adjusting rod; 19-fixing screw 19, 20-right supporting base; 21-left supporting base; 22-side positioning block. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] The MT-FA test structure of the present invention is designed for the test process of optical modules, aiming to provide a high-precision and high-efficiency test environment. Through the combination of multiple modules, the test structure can achieve stable fixation and precise alignment of the fiber array (FA) and the MT connector, thereby ensuring the accuracy and repeatability of the test data. The following will describe in detail the various parts of the test structure and its working principle.

[0035] Example 1

[0036] The MT-FA test structure of the present invention is composed of four main structures, namely, the PD installation structure, the optical fiber array FA fixing structure, the MT-FA fiber length adaptation adjustment structure, and the MPO and MT fixing structure. These structures realize high-precision operation in optical module testing through precisely designed mechanical connections and adjustment mechanisms.

[0037] 1. PD installation structure

[0038] The PD installation structure is the core component of the optical module MT-FA test structure. Its main function is to install and accurately adjust the photodetector (PD) to ensure that it can accurately align with the output end of the optical fiber array. The design of this structure not only embodies the principles of precision engineering, but also embodies the concentrated embodiment of technological innovation in the field of optical testing.

[0039] The core component of the PD installation structure is the multi-degree-of-freedom adjustment frame 1. Each test structure is equipped with a multi-degree-of-freedom adjustment frame 1 on the left and right. This symmetrical design not only enhances the stability of the structure, but also provides the possibility of bidirectional testing. The outstanding feature of the multi-degree-of-freedom adjustment frame 1 is its multi-degree-of-freedom adjustment function, which can perform fine displacement adjustment in the three axes of X, Y, and Z. During the actual test process, the end face of the optical fiber array may have a slight offset due to manufacturing errors. At this time, the multi-degree-of-freedom adjustment frame 1 can quickly adjust the position of the detector through its screw adjuster to compensate for this deviation and ensure that the detected signal is not affected. This flexibility greatly improves the accuracy and reliability of the test.

[0040] The lens fixing bracket 2 is a key component for connecting the multi-degree-of-freedom adjustment frame 1 and the photodetector 3. Each test structure is equipped with two lens fixing brackets 2, which not only support the photodetector 3, but also need to firmly fix it on the multi-degree-of-freedom adjustment frame 1. The design of the bracket emphasizes stability, which is to avoid deviation caused by vibration or external force during the test. In addition, the lens fixing bracket 2 also has a fine-tuning function. The purpose of this design is to adapt to different models of photodetectors 3, enhancing the versatility and flexibility of the test structure.

[0041] Photodetector 3 is the core part of the photodetector. The main function of photodetector 3 is to capture the optical signal output from the optical fiber array and convert it into an electrical signal. Each test structure is equipped with two photodetectors 3. This design not only improves the test efficiency, but also provides the possibility for bidirectional testing. The accuracy and sensitivity of photodetector 3 directly affect the test results, so the selection and installation of the lens are particularly important. In actual use, the lens needs to maintain an appropriate distance and angle with the end face of the optical fiber to maximize the intensity of the received optical signal.

[0042] The anti-vibration table 4 serves as the foundation of the entire PD installation structure. In precision testing, any slight vibration may cause fluctuations in the test results. Therefore, the design and material selection of the anti-vibration table 4 become particularly important. Usually, the anti-vibration table 4 is made of high-density materials and has good shock absorption performance. This design can not only effectively reduce the impact of external vibration on the PD installation structure, but also ensure the stability and repeatability of the test results.

[0043] The design of the slide rail base 5 and the slide rail platform 7 reflects the engineers' deep understanding of the need for a wide range of adjustments. The main functions of these two components are to support and adjust the position of the entire PD mounting structure. Through the linear movement of the slide rail platform 7, the PD mounting structure can be adjusted for a wide range of displacements within a certain range. The advantage of this design is that it provides operators with a larger operating space, allowing the test structure to adapt to MT-FAs of different specifications. It is worth mentioning that a slide rail travel limit block 6 is also provided on the slide rail base 5. The purpose of this detail design is to ensure that the displacement range of the platform is within a safe range to avoid exceeding the adjustment limit and causing damage to the equipment. This design concept of preventing misoperation reflects the engineers' high attention to the safety and reliability of the equipment.

[0044] The design of the PD mounting structure of the present invention fully embodies the advanced concepts in the field of precision engineering and optical testing. From the overall layout to the detailed design, each component has been carefully considered to ensure the accuracy, reliability and efficiency of the test. In actual testing, the operator usually first performs coarse adjustments through the slide platform 7, and then performs fine adjustments through the multi-degree-of-freedom adjustment frame 1 until the photodetector is fully aligned with the output end of the fiber array. This coarse-to-fine adjustment method not only improves the adjustment efficiency, but also maximizes the accuracy of the test results. It can be said that the design and implementation of the PD mounting structure provides a solid hardware foundation for the high-quality testing of MT-FA.

[0045] 2. Fiber Array FA Fixed Structure

[0046] The fiber array FA fixing structure is another crucial component of the MT-FA test structure. The main purpose of this structure is to stabilize and accurately position the fiber array. As an optical device composed of multiple optical fibers arranged in an array, the precise positioning of the fiber array is directly related to the normal transmission quality of the optical signal. Therefore, the design of the FA fixing structure has been specially considered and optimized in terms of stability and accuracy.

[0047] The core components of the structure include the right support base 20 and the left support base 21. The two support bases are located on both sides of the fiber array, and their main function is to support and fix the ends of the fiber array. The design of the support bases embodies the concept of "stability first". They are firmly fixed to the base of the structure by bolts. This design ensures that the support bases will not shake or move during the entire test process. This is particularly important because in high-precision optical tests, even small vibrations or displacements can cause significant deviations in test results.

[0048] The design and application of the side positioning block 22 reflects the engineers' deep understanding of multi-dimensional fixation. The main function of the side positioning block 22 is to fix the side of the fiber array to prevent any unnecessary displacement in the X-axis or Y-axis direction. The cleverness of this design is that it ensures that the fiber array can fit tightly in the fixture, effectively avoiding alignment errors that may be caused by slight movements of the fiber array. In actual testing, even micron-level displacements may have a significant impact on the test results.

[0049] The design and application of the fixing screw 19 reflect the engineers' careful consideration of optical fiber protection. The main function of the fixing screw 19 is to firmly fix the end of the optical fiber array on the supporting base. The central axis of the screw is carefully designed to be perpendicular to the plane of the optical fiber array. The purpose of this design is to avoid any lateral pressure on the optical fiber during the locking process, thereby effectively avoiding possible damage to the optical fiber. This is of great significance for protecting the expensive optical fiber array and ensuring the reliability of the test results.

[0050] The design of the entire FA fixing structure of the present invention also takes into account the convenience of actual operation. The structure can realize the rapid installation and removal of the optical fiber array, which greatly improves the test efficiency, especially when a large number of samples need to be tested. At the same time, the design of the structure also ensures that the optical fiber array can remain stable and not deformed during the entire test process. This stability is crucial to ensure the consistency and repeatability of the test results.

[0051] The design of the FA fixing structure of the present invention also embodies the concept of modularity and adjustability. By adjusting the position of the support base and the positioning block, the structure can adapt to optical fiber arrays of different specifications and sizes. This flexibility greatly enhances the versatility of the test structure. In addition, each component of the structure adopts high-precision processing technology to ensure the precise matching between the components, thereby further improving the stability and accuracy of the entire structure.

[0052] 3. MT-FA fiber length adaptation adjustment structure

[0053] The core purpose of the MT-FA fiber length adaptation adjustment structure is to adapt to MT-FAs of different lengths, because in actual production, the length of the fiber array may vary depending on the product model. This flexible design not only improves the versatility of the test equipment, but also greatly enhances its practical value in actual applications.

[0054] The bottom plate 9, as the foundation of the entire adjustment structure, is made of high-strength metal material, which ensures the stability and durability of the entire structure. The multiple mounting holes and guide rails provided on the bottom plate 9 are not only used to fix other components, but also provide the possibility of adjustment for the entire structure. The cleverness of this design is that it ensures the stability of the structure while providing great flexibility for the installation and adjustment of other components.

[0055] The profiled groove base 1 is a sliding adjustment platform that can adapt to different lengths of optical fiber arrays. The guide grooves provided on the base allow the optical fiber arrays of different lengths to be adapted by adjusting the length of the adjustment rod. This design not only increases the scope of application of the device, but also greatly improves the efficiency of the test. The profiled groove base 10 can be fixed to the metal base plate 9 by a locking device after adjustment. This design ensures that the base will not be accidentally displaced during the test, thereby ensuring the reliability and consistency of the test results.

[0056] The design of the left adjustment rod 17 and the right adjustment rod 18 fully embodies the concept of precise adjustment. The two adjustment rods are located on both sides of the contoured slot base 10 and are mainly used to adjust the position of the slot base. The adjustment rods are fixed in the guide slot by screws. This design allows the operator to make precise adjustments according to the actual length of the product. It is particularly worth mentioning that the locking screw design on the adjustment rod ensures that after the adjustment is in place, the entire structure can remain stable and will not move accidentally during the test. This design not only improves the accuracy of the test, but also increases the reliability of the entire equipment.

[0057] The design of the entire adjustment structure also takes into account the convenience and efficiency of operation. For example, the design of the adjustment rod allows the operator to quickly adjust the position of the contoured slot base 10 without complex tools or cumbersome steps. This design greatly reduces the time for equipment adjustment, thereby improving the overall test efficiency. At the same time, the various components of the structure are all standardized, which not only facilitates maintenance and replacement, but also further improves the reliability and durability of the entire equipment.

[0058] The design of this adjustment structure also embodies the idea of ​​modularization. By replacing the adjustment rods or the contoured groove base 10 of different specifications, the structure can further expand its scope of application to adapt to new MT-FAs that may appear in the future. This forward-looking design concept greatly extends the service life of the equipment and improves the return on investment.

[0059] The design of the MT-FA slim fit adjustment structure fully reflects the advanced concepts in the field of precision engineering and optical testing. From the overall layout to the details, every design decision is aimed at achieving the flexibility, stability and precision of the structure. This design not only ensures the accuracy and reliability of the test results, but also greatly improves the test efficiency, while also reserving adaptation space for new products that may appear in the future. It can be said that the excellent design of this adjustment structure provides a solid hardware foundation for the high-quality and efficient testing of MT-FA, and is an indispensable key component of the entire test structure.

[0060] 4. MPO and MT fixed structure

[0061] The MPO and MT fixing structure is specially used to connect and fix the MT connector and the MPO test jumper. Every detail of its design is aimed at ensuring the stability and accuracy of the connection, which directly affects the reliability of the test results.

[0062] The design of the left fixing bracket 11 and the right fixing bracket 12 fully embodies the concept of adaptability and precision. These two fixing brackets serve as the main fixing devices for MT connectors and MPO test jumpers. The brackets are connected to the base plate 9 by screws. This design not only provides a stable support, but also gives the brackets adjustability. This means that the operator can make adaptive adjustments according to different connector models, greatly increasing the versatility of the equipment. In addition, the material selection and processing accuracy of the brackets have also been carefully considered to ensure that no damage is caused to the expensive fiber connectors during the fixing process.

[0063] The design of the spring stopper reflects the engineers' deep understanding of stability and protection. The spring left stopper 13 and the spring right stopper 14 play a vital role in the process of fixing the connector. The spring 15 installed inside the stopper is the core of this design. It uses elastic force to firmly clamp the connector between the fixing brackets. The cleverness of this design is that it not only provides a stable fixing force, but also absorbs small vibrations during the connection process. This is crucial for protecting delicate fiber optic connectors, because even small vibrations can cause damage to the fiber or deteriorate the connection quality.

[0064] The cover plate 16 is not only used to reinforce the structure of the spring stopper, but also to prevent the stopper from being deformed or loosened during use. The cover plate 16 is fixed to the stopper by screws, and this design ensures that it can provide sufficient support force. At the same time, the existence of the cover plate 16 also facilitates the maintenance and replacement of the internal spring, increasing the maintainability of the entire structure.

[0065] The design of the entire fixed structure also takes into account the convenience and efficiency of operation. For example, the design of the bracket and the limit block allows the operator to quickly complete the docking and fixing of the MPO and MT connectors without complicated tools or cumbersome steps. This design greatly reduces the time for equipment adjustment, thereby improving the overall testing efficiency. At the same time, the various components of the structure are standardized, which not only facilitates maintenance and replacement, but also further improves the reliability and durability of the entire equipment.

[0066] The MPO and MT fixing structures disclosed in the present invention can allow the operator to precisely control the fixing force of the connector by adjusting the position of the fixing bracket and the pressure of the spring. This fine adjustment capability is very important for different types of connectors and different test requirements, because it allows the operator to avoid excessive pressure on the connector while ensuring the stability of the connection.

[0067] The design of the MPO and MT fixed structure fully reflects the advanced concepts in the field of precision engineering and fiber optic communication testing. From the overall layout to the details, every design decision is aimed at achieving structural stability, precision and ease of operation. This design not only ensures the accuracy and reliability of the test results, but also greatly improves the test efficiency, while also providing the operator with sufficient adjustment space to cope with different test needs. It can be said that the excellent design of this fixed structure provides a solid hardware foundation for the high-quality and efficient testing of MT-FA, and is an indispensable key component of the entire test structure. By quickly and stably docking the MPO and MT connectors and maintaining a reliable connection state after docking, the structure effectively avoids signal loss or errors caused by unstable connection during the test, thereby greatly improving the reliability and consistency of the test results.

[0068] Example 2

[0069] This embodiment discloses a technical solution that integrates the MT-FA fiber length adaptation adjustment structure and the MPO and MT fixing structure into one. This design not only optimizes the volume of the structure and reduces the complexity of the equipment, but also realizes the fiber length adaptation adjustment of the MT-FA and the fixing and positioning of the MPO and MT connectors through an integrated structure, thereby improving the test efficiency and the stability of the equipment.

[0070] In order to achieve this purpose, the present invention integrates the functions of the MT-FA length adaptation adjustment structure and the MPO and MT fixed structure into an integrated unit. The integrated structure is mainly composed of components such as a base plate 9, a contoured groove base 10, a spring limit block, a fixed bracket and a guide boss. The base plate 9 is the foundation of the entire structure and is made of high-strength metal material, which can bear the weight of the equipment and provide sufficient stability. The base plate 9 is connected to the second linear displacement unit through the slide rail bracket 8, so that the entire device can be moved accurately to adapt to MT-FAs of different lengths. The contoured groove base 10 is fixedly connected to the base plate 9 and is provided with a guide boss 10.1 and a limit groove 10.2. The guide boss 10.1 cooperates with the guide hole of the fixed bracket to ensure the precise positioning and sliding adjustment of the fixed bracket; the limit groove 10.2 provides a mechanical limit function during the adjustment process to prevent excessive movement.

[0071] In the present invention, two spring limit blocks arranged in mirror symmetry are fixed on the profiling slot base 10 to simultaneously fix the MPO test jumper and the MT connector. A spring mounting hole penetrating along the Z axis is provided in the middle of each spring limit block, and a spring 15 is installed in the hole. The MPO jumper and the MT connector are kept fixed by elastic force, and an adjustment range is provided when necessary. The inner end of the spring limit block is designed with a positioning feature for accurately fixing the MPO jumper; the through hole at the outer end is connected to the spring mounting hole, and the L-shaped feature extends into the spring mounting hole through the through hole and contacts one end of the spring, thereby ensuring that a uniform fixing force is applied to the MPO jumper and the MT connector during the test. The spring limit block can slide along the X-axis direction, and the size of the fixing force can be adjusted by adjusting the compression degree of the spring to adapt to connectors of different specifications. Each spring limit block corresponds to a C-shaped fixed bracket, and the guide hole of the fixed bracket extends along the Y-axis direction, providing a stable guiding effect when cooperating with the guide boss on the profiling slot base.

[0072] In addition, a guide groove is provided on the profiling groove base 10, and the guide groove is slidably matched with the adjustment rod, and a part of the adjustment rod is located outside the guide groove. The position of the profiling groove base is adjusted by the adjustment rod to adapt to optical fiber arrays of different lengths. The end of the adjustment rod is connected to a first fixing unit, which is used to lock the adjustment rod in the guide groove after adjusting to a suitable position to prevent position deviation during the test. Such a design ensures the stability of the test environment, especially when the equipment needs to be adjusted frequently, and can maintain efficient and reliable operation.

[0073] In the present invention, the fixing structure of the optical fiber array is also optimized. A support base is provided on the bottom plate 9, and the support base is provided with a side positioning block 22 and a fixing screw 19 for fixing the end of the optical fiber array. The central axis of the fixing screw 19 is perpendicular to the side positioning block 22, and the end of the optical fiber array is fixed between the fixing screw 19 and the positioning block. The optical fiber array is accurately fixed by adjusting the position of the fixing screw 19, ensuring that the optical fiber will not loosen or shift during the test. This design not only simplifies the operation process, but also ensures the accuracy of optical signal transmission, avoiding signal loss or measurement errors caused by loose or offset optical fibers.

[0074] The present invention has significant technical advantages by integrating the MT-FA fiber length adaptation adjustment structure with the MPO and MT fixing structures into an integrated structure. First, the integrated design greatly reduces the structural volume, simplifies the operating steps, and saves laboratory space. Secondly, the design of the integrated structure allows the operator to complete the length adaptation of the optical fiber array and the fixation of the connector in one adjustment, greatly reducing the test preparation time and thus improving operational efficiency. In addition, the solution enhances the overall stability of the equipment by reducing the error accumulation between independent components, effectively improving the accuracy and reliability of the test. The technical solution can also adapt to MT-FA and its optical fiber arrays of different specifications, has high versatility, strong adaptability, and is suitable for a variety of different test scenarios.

[0075] Example 3

[0076] This embodiment provides a technical solution based on modular design, which designs the MT-FA fiber length adaptation adjustment structure and the MPO and MT fixing structure as independent modules. Each module has a standardized interface and fixing method, so that operators can quickly replace or debug different modules according to test requirements without adjusting or disassembling the entire device. This technical solution can greatly improve the flexibility of operation, and is particularly suitable for scenarios where test equipment needs to be frequently replaced or fiber arrays of different specifications need to be tested.

[0077] Specifically, in the present embodiment, the base plate 9 still exists as the basic structure, but a number of module installation positions are added thereon, and each installation position can be connected to different modules. The components such as the profiling groove base 10, the spring limit block, the fixed bracket and the guide boss are divided into a plurality of independent modules according to the modular design. These modules are connected to the base plate through a standardized fixed interface, so that the installation and removal of the modules become easier. For example, the profiling groove base 10 can be designed as a standard module, on which the guide boss 10.1 and the limit groove 10.2 are still retained for fixing and adjusting the MPO and MT connectors. However, when it is necessary to test optical fibers of different lengths or specifications, the profiling groove base module can be quickly replaced to avoid readjusting the entire device.

[0078] To ensure the stability and accuracy of the modular design, high-precision positioning pins and buckle structures are used to connect the modules. The positioning pins ensure that each module can maintain a precise position when connected, while the buckle structure provides quick connection and fixation functions, allowing the modules to be installed and removed in seconds. Each module is also designed with a spring preload adjustment device, allowing the operator to adjust the compression of the spring according to actual needs after the module is installed, thereby achieving precise control of the fixing force of the fiber array.

[0079] This modular design technology solution shows extremely high flexibility and operability in practical applications. First, through modular design, the versatility of the equipment has been significantly improved. Operators can quickly replace modules with different functions according to different test requirements to adapt to a variety of fiber array tests of different specifications. Secondly, the rapid removal and installation of modules reduces the difficulty of equipment maintenance. Operators can debug and maintain the equipment more efficiently, reducing equipment downtime. In addition, the standardized module design also makes the production and assembly of the equipment easier, thereby reducing production costs.

[0080] Example 4

[0081] This embodiment introduces an automatic adjustment and control technology to achieve automatic adjustment of MT-FA fiber length adaptation and MPO and MT connector fixing structure. In the test of optical modules, the traditional manual adjustment method usually has problems such as low adjustment efficiency and low precision. By introducing automation technology, the adjustment speed and precision of the equipment can be significantly improved, thereby improving the overall test efficiency and the accuracy of the test results.

[0082] Specifically, in this embodiment, the bottom plate 9 still adopts the design of connecting the slide rail bracket 8 with the second linear displacement unit, but on this basis, an electric adjustment unit and a control system are added. The electric adjustment unit includes a stepper motor and a precision screw drive mechanism, and the stepper motor is connected to the control system. The control system can realize the automatic movement of the slide rail bracket 8, thereby automatically adjusting the displacement of the bottom plate 9. The operator can input the required displacement distance through the user interface of the control system or directly monitor and adjust the position in real time through the sensor, avoiding errors in manual operation.

[0083] At the same time, an automatic adjustment device is also introduced on the contoured slot base 10. A precision slider is embedded in the guide slot on the contoured slot base, and the slider is driven by a micro motor to realize the automatic movement and adjustment of the contoured slot base 10. In addition, the adjustment of the spring limit block is also realized by the automatic control system. A pressure sensor is installed inside the spring limit block to monitor the compression force of the spring 15 in real time and feed the data back to the control system. The control system automatically adjusts the compression degree of the spring according to the feedback data to ensure that the MPO jumper and MT connector are evenly and accurately stressed when fixed.

[0084] The introduction of automated control technology has brought about significant technical effects. First, automated adjustment has greatly improved operational efficiency, especially in test scenarios that require multiple adjustments. The automated system can quickly complete the adjustment task and reduce the workload of operators. Secondly, the high-precision control function of the automated adjustment system ensures the accuracy and consistency of each adjustment, reduces the errors that may be introduced during manual adjustment, and improves the reliability of test results. In addition, the automated adjustment system also has intelligent control functions, which can automatically select appropriate adjustment parameters according to the specifications of different fiber arrays and connectors, further improving the adaptability and versatility of the equipment.

[0085] In this embodiment, a flexible material design is introduced to further optimize the fiber length adaptation of MT-FA and the fixing effect of MPO and MT connectors. The introduction of flexible materials can not only improve the adaptability of the device, but also reduce the optical fiber damage caused by mechanical stress to a certain extent and increase the service life of the optical fiber array.

[0086] Specifically, in this embodiment, a layer of flexible shock-absorbing pad is added between the bottom plate 9 and the contoured groove base 10. This flexible material has good buffering performance and deformation recovery ability. The flexible shock-absorbing pad can absorb part of the mechanical vibration and stress when the bottom plate 9 is connected to the contoured groove base 10, thereby reducing the adverse effects on the optical fiber array and the connector caused by the movement of the bottom plate or environmental factors. At the same time, a similar flexible material layer is also added between the fixed bracket of the contoured groove base 10 and the guide boss 10.1 to further optimize the adaptation effect of the fixed structure and ensure that the connector will not be affected by excessive external force during the adjustment process.

[0087] In addition, the internal structure of the spring stopper has also been optimized. Based on the traditional metal spring, this embodiment uses a spring with a flexible coating. While maintaining the original elastic force, this spring can reduce the friction during spring compression and release through the flexible coating, thereby improving the stability during the fixing process. In addition, the flexible coating also has certain fatigue resistance and wear resistance, which can extend the service life of the spring and reduce the elastic force attenuation during frequent use.

[0088] Through the introduction of flexible materials, the technical solution of this embodiment has shown remarkable effects in practical applications. First, the buffering performance of the flexible material effectively reduces the mechanical stress that the optical fiber array may be subjected to during the adjustment and testing process, reduces the risk of optical fiber damage, and thus extends the service life of the optical fiber. Secondly, the flexible material also improves the adaptability and stability of the fixed structure, and can better adapt to optical fiber connectors of different specifications during the fixing process, reducing adjustment errors. In addition, the use of flexible materials also improves the fatigue resistance and durability of the equipment, especially in the case of long-term use, it can effectively maintain the performance stability of the equipment.

[0089] Example 5

[0090] This embodiment describes the assembly method of the present invention in detail, including steps from assembling components to completing the final device so that the device can be put into practical use. The following are the specific steps of the assembly process:

[0091] Step S1: Assembly of the slider assembly and fixture

[0092] First, assemble the slide rail base 5, the slide rail platform 7, the slide rail travel limit block 6, and the slide rail bracket 8 to form a complete slider assembly. The function of this slider assembly is to provide a stable sliding platform and effective travel limit to ensure that the equipment can be accurately moved and positioned during operation. The assembled slider assembly is fixed on the anti-vibration table 4 with screws to ensure its stability.

[0093] Next, assemble the three-dimensional adjustment frame 1, the lens fixing bracket 2, and the photodetector 3 into the left and right PD fixing adjustment brackets. This fixing adjustment bracket is used to accurately adjust and fix the position of the photodetector to ensure the accuracy of the field of view and focal length in the optical test. The assembled left and right PD fixing adjustment brackets are fixed to the U-shaped groove of the anti-vibration table 4 with screws to ensure that their positions are stable and will not move during operation.

[0094] Step S2: Assembly of the fiber array fixture

[0095] In this step, the right support base 20, the side positioning block 22, and the fixing screw 19 are assembled to form a right side fixture of the optical fiber array. The right side fixture is used to stabilize the right side of the optical fiber array to ensure that its position does not move or shift during the test process.

[0096] Similarly, the left support base 21, the side positioning block 22, and the fixing screw 19 are assembled to form the left side fixing device of the optical fiber array. The function of the left side fixing device is the same as that of the right side, which is used to stabilize the left part of the optical fiber array so that the entire optical fiber array maintains the correct position and angle during the test.

[0097] Step S3: Installation of metal base plate and adjustment rod

[0098] The metal bottom plate 9 and the contoured groove base 10 are fixed together with screws to form a stable bottom structure. The metal bottom plate 9 provides a solid foundation for the overall device, while the contoured groove base 10 is used to achieve accurate positioning and adjustment of the optical fiber array.

[0099] Next, the left adjustment rod 17 and the right adjustment rod 18 are inserted into the square holes and fixed with screws. These adjustment rods are used to provide precise adjustment and support between different parts of the device, ensuring that the device can be stable and accurately adjusted during operation.

[0100] Step S4: Installation of spring limit block and fixing bracket

[0101] In this critical step, first put the spring 15 into the left spring stopper 13, and insert the left fixing bracket 11 into the left spring stopper 13 to block the spring. Then, align the U-shaped hole with the left latch of the metal bottom plate 9, adjust the overall front and rear position to ensure the accuracy of the device. Fix the left spring stopper 13 to the metal bottom plate 9 with screws, and tighten the cover plate 16 to the left spring stopper 13 with screws to ensure the stability of the spring and the fixing bracket.

[0102] Similarly, put the spring 15 into the right spring stopper 14, insert the right fixing bracket 12 into the right spring stopper 14 to block the spring, and align the U-shaped hole with the right latch of the metal bottom plate 9 to adjust the overall front and rear position. Use screws to fix the right spring stopper 14 on the metal bottom plate 9, and screw the cover plate 16 on the right spring stopper 14 to ensure the stability of the right fixing bracket.

[0103] After completing the above steps, the entire device is assembled. At this point, the various parts of the device have been fixed in place as required, the springs and fixing brackets have been correctly installed, and the adjustment rod and slider assembly have been configured. The assembled device can be subsequently calibrated and tested to ensure that its performance in actual applications meets the expected results. Users can adjust the various parts of the assembly to meet specific test requirements and ensure that the fiber array can be stably and accurately fixed during the test process.

[0104] Example 6

[0105] This embodiment discloses the use method of the present invention: The present invention provides an MT-FA test structure, and the use method thereof is as follows:

[0106] First, the structure needs to be assembled. Assemble the slide base, slide platform, slide travel limit block and slide bracket into a slider assembly, and fix it to the anti-vibration table with screws. Subsequently, assemble the three-dimensional adjustment frame, lens fixing bracket and photoelectric detector into the left and right PD fixed adjustment brackets, and fix them on the U-shaped groove of the anti-vibration table. Next, assemble the left and right side fixing devices of the optical fiber array, which are respectively composed of a support base, a side positioning block and a fixing screw. Then, fix the metal base plate to the contoured groove base with screws, and insert the left and right adjustment rods into the square hole. Finally, install the spring limit block and the fixing bracket to ensure that they can be flexibly adjusted on the metal base plate.

[0107] When using, first connect the end face of the MPO test jumper to the MT end face of the MT-FA through the guide pin. Then, push open the left and right fixing brackets, put the connected product between the two spring limit blocks, and use the fixing bracket and the spring limit blocks to fix the MT connector and the MPO test jumper. Next, put the fiber array head of the MT-FA into the first fixing unit. By adjusting the adjustment rod, the length of the fixing device slot is adapted to the product length, and the side screw is used to lock the adjustment position.

[0108] During the alignment process, the second linear displacement unit is first adjusted to pre-align the fiber array head of MT-FA with the photodetector unit. Then, the first linear displacement unit and the three-dimensional adjustment frame are finely adjusted to achieve precise alignment of the fiber array head and the photodetector unit.

[0109] The uniqueness of the present invention lies in that, through a clever structural design, after the MPO end face is butted against the MT end face, the two fiber arrays can be fixed separately and placed together in the test structure fixed groove area. By adjusting the angle of the structure and the length of the groove area in advance, the fiber array FA end face can be accurately aligned with the large PD receiving surface of the power meter. Combined with the test software, the performance test of all channels of the product can be completed with one click.

[0110] The structural fixture design of the present invention greatly improves the efficiency and consistency of MT-FA testing, and provides quality and efficiency guarantees for large-scale production of products. It not only simplifies the operation process, but also ensures the reliability of the test results, which is of great significance for improving product quality and production efficiency. The method of the present invention can solve the problems of low efficiency and poor consistency in traditional MT-FA testing, and makes an important contribution to the technological progress in the field of optical communications.

[0111] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0112] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. An MT-FA test structure for an optical module, characterized in that: The invention comprises a first linear displacement unit and a second linear displacement unit, wherein the first linear displacement unit and the second linear displacement unit are both arranged to extend in the X-axis direction, and the first linear displacement unit and the second linear displacement unit are arranged in parallel and spaced apart along the Y-axis direction, the first linear displacement unit is provided with a photoelectric detector unit, and the second linear displacement unit is provided with a first fixing unit for fixing the optical fiber array assembly and a second fixing unit for fixing the MT connector and the MPO test jumper, the first fixing unit is connected to the second linear displacement unit in a manner displaceable along the Y-axis direction, the second fixing unit is fixedly connected to the second linear displacement unit, and the photoelectric detector unit and the first fixing unit are arranged in a one-to-one correspondence; the second fixing unit comprises a displacement end connected to the second linear displacement unit A bottom plate (9) is connected to the bottom plate (9), a contoured groove base (10) is connected to the bottom plate (9), one end of the contoured groove base (10) is provided with a guide boss (10.1), and the other end is provided with a limit groove (10.2), two spring limit blocks arranged in mirror symmetry are fixedly connected to the contoured groove base (10), the middle part of each spring limit block is provided with a spring mounting hole penetrating along the Z-axis direction, the inner end surface of each spring limit block is provided with a positioning feature for fixing an MPO test jumper, the outer end surface of each spring limit block is provided with a through hole extending along the X-axis direction and communicating with the spring mounting hole, a spring (15) is arranged in the spring mounting hole, and two fixing brackets for fixing the MT connector are also included, and the fixing brackets are arranged in a one-to-one correspondence with the spring limit blocks.

2. The MT-FA test structure for an optical module according to claim 1, characterized in that: Each fixing bracket comprises a guide hole extending along the Y-axis direction and cooperating with the guide boss (10.1) and an L-shaped feature capable of passing through a through hole on the spring stop block and extending into the spring mounting hole; one end of the spring (15) contacts the L-shaped feature and the other end contacts the spring stop block.

3. The MT-FA test structure for an optical module according to claim 2, characterized in that: The guide bosses (10.1) include at least four, and the two fixing brackets are arranged in a C shape.

4. The MT-FA test structure for an optical module according to claim 2, characterized in that: The spring limit block is connected to the contoured groove base (10) and can be displaced along the X-axis direction.

5. The MT-FA test structure for an optical module according to claim 2, characterized in that: The base plate (9) is connected to the displacement end of the second linear displacement unit via a slide rail bracket (8).

6. The MT-FA test structure for an optical module according to claim 2, characterized in that: The contoured groove base (10) is provided with a guide groove extending along the Y-axis direction, an adjustment rod is slidably connected in the guide groove, at least part of the adjustment rod is located outside the guide groove, and the end of the adjustment rod is connected to a first fixing unit.

7. The MT-FA test structure for an optical module according to claim 6, characterized in that: The first fixing unit comprises a support base fixedly connected to the adjustment rod, the support base being provided with a side positioning block (22) and a fixing screw (19), the central axis of the fixing screw (19) being perpendicular to the side positioning block (22), and the end of the optical fiber array being fixed between the fixing screw (19) and the fixing screw (19).

8. The MT-FA test structure for an optical module according to claim 7, characterized in that: The photoelectric detector unit comprises a multi-degree-of-freedom adjustment frame (1), a lens fixing frame (2) and a photoelectric detector (3); the fixed end of the multi-degree-of-freedom adjustment frame (1) is fixedly connected to the linear displacement unit; the movable end of the multi-degree-of-freedom adjustment frame (1) is connected to the lens fixing frame (2); and the photoelectric detector (3) is arranged on the lens fixing frame (2).

9. The MT-FA test structure for an optical module according to claim 1, characterized in that: It comprises an anti-vibration platform (4), on which the linear displacement unit is arranged.

10. A method for using the MT-FA test structure for an optical module according to any one of claims 1 to 9, characterized in that: The MPO end face in the test jumper is connected to the MT end face of the MT-FA through a guide pin, the left and right fixing brackets are pushed open and the connected product is placed between two spring limit blocks, the fixing bracket and the spring limit block cooperate to fix the connection between the MT connector and the MPO test jumper; the optical fiber array head of the MT-FA is placed in the first fixing unit; the length of the fixing device slot is adjusted to match the product length by adjusting the adjustment rod, and the position is adjusted by locking the side screw; the second linear displacement unit is adjusted so that the optical fiber array head of the MT-FA is pre-aligned with the photoelectric detector unit, and the first linear displacement unit and the multi-degree-of-freedom adjustment frame (1) are adjusted to achieve accurate alignment of the optical fiber array head with the photoelectric detector unit.

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