An assembly structure and method for an optical module optical interface with adjustable ceramic ferrule depth

Abstract

The present invention discloses an assembly structure and method for an optical module optical interface with adjustable ceramic ferrule depth, which comprises a universal base, on which a first avoidance hole for optical fiber passing through and a avoidance groove for avoiding capillary tubes are arranged along its central axis, and a metal part limit block for positioning metal parts and an elastic ejector unit for adjusting the distance H between the end faces of the metal part and the ceramic ferrule are arranged coaxially with the universal base, and the ejector of the elastic ejector unit is always in contact with the end face of the ceramic ferrule. The ejector is adjusted up and down to solve the different depth requirements of the ceramic ferrule and the metal part plane due to the diversity of optical interfaces of optical modules.

Description

Technical Field

[0001] The present invention relates to the technical field of optical modules, and in particular to an assembly structure and method for an optical module optical interface with adjustable ceramic ferrule depth. Background Art

[0002] With the advent of the digital age, the Internet industry is booming, which has directly led to the continued growth in demand for network communication equipment. As an important part of network communication equipment, optical modules are also constantly innovating and developing to meet the growing market demand. At the same time, the rapid rise of new-generation information technologies such as cloud computing, artificial intelligence, and big data has greatly increased the demand for computing power, thereby accelerating the construction of cloud computing infrastructure. This trend has led to an increasing demand for high-speed optical modules such as 200G, 400G, 800G, and even 1.6T.

[0003] At present, as the docking window of optical modules, the demand for diversity of optical interfaces of optical modules has also increased significantly. However, the existing manufacturing processes are all for an optical module optical interface structure, which requires a set of corresponding assembly structures to be customized, resulting in problems such as an increase in the number of finished products and an extension of the delivery cycle.

[0004] In view of the above situation, the industry urgently needs to develop an assembly structure with adjustable ceramic ferrule depth of an optical module optical interface to solve the above technical problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an assembly structure and method for an optical module optical interface with adjustable ceramic ferrule depth in response to the technical defects existing in the prior art. The structure solves the different depth requirements of the ceramic ferrule and the metal part plane due to the diversity of the optical interface of the optical module by adjusting the top pin up and down.

[0006] The technical solution adopted by the present invention to solve its technical problem is: the present invention discloses an assembly structure of an optical module optical interface with adjustable ceramic ferrule depth, which is used to adjust the distance H between the end faces of the metal part and the ceramic ferrule of the optical module optical interface, and includes a universal base, on which is provided a first avoidance hole for optical fiber to pass through and an avoidance groove for avoiding the capillary arranged along its central axis, and the universal base is provided with a metal part limit block coaxially arranged therewith for positioning the metal part and an elastic ejector unit for adjusting the distance H between the end faces of the metal part and the ceramic ferrule, and the ejector of the elastic ejector unit is always in contact with the end face of the ceramic ferrule.

[0007] In a preferred embodiment of the present invention, the elastic ejector unit includes a coaxially arranged limit block and a pressure rod limit block, a pressure needle fixture coaxially arranged and axially displaceable therewith is connected between the limit block and the pressure rod limit block, a coaxially arranged ejector and an adjustment component for adjusting the axial position of the ejector are provided in the pressure needle fixture, a spring limit fixture coaxially arranged therewith is axially displaceably connected to the outer peripheral surface of the pressure needle fixture, a spring is sleeved on the outer side of the pressure needle fixture, and the spring maintains contact with the spring limit fixture and the pressure rod limit block.

[0008] In a preferred embodiment of the present invention, the spring limiting clamp is provided with a plurality of fasteners extending along its radial direction.

[0009] In a preferred embodiment of the present invention, the adjustment assembly includes a pressure needle screw coaxially threadedly connected to the pressure needle fixture and a push screw capable of radial displacement along the pressure needle fixture, the push screw radially loads the push needle, and the pressure needle screw axially loads the push needle.

[0010] In a preferred embodiment of the present invention, the pressure rod limiting block is provided with a positioning and mounting groove cooperating with the metal part limiting block and a guide groove for cooperating with the pressure needle fixture.

[0011] In a preferred embodiment of the present invention, the metal part limit block is provided with a metal part installation groove coaxially arranged therewith, a second avoidance hole for allowing the optical fiber to pass through, and a radial installation groove for installing the optical fiber, the metal part installation groove is connected to the second avoidance hole, and the radial installation groove is connected to the metal part installation groove and the second avoidance hole.

[0012] In a preferred embodiment of the present invention, a positioning installation groove cooperating with the metal part limiting block is provided on the universal base.

[0013] In a preferred embodiment of the present invention, a fastening screw for fixing the metal part limit block is provided on the universal base, and the fastening screw radially loads the metal part limit block.

[0014] In a preferred embodiment of the present invention, the universal base is provided with an optical fiber installation groove which is connected with the avoidance groove of the first avoidance hole.

[0015] The present invention also discloses a method for using an assembly structure of an optical module optical interface with adjustable ceramic ferrule depth, which comprises the following steps: inserting an optical fiber into an inner hole of the ceramic ferrule, and bonding and curing the optical fiber with optical glue; grinding the ceramic ferrule to required angles and end face requirements by a grinder; inserting the ceramic ferrule into a metal part, and inserting the other end of the optical fiber into an inner hole of a capillary, and bonding and curing the optical glue with optical glue; grinding the capillary to required angles and end face requirements by a grinder; placing the metal part into a metal part installation groove of a metal part limit block, and adjusting a mark on the metal part to be parallel to a high point of the ceramic ferrule angle; measuring the height of the assembled ejector pin protrusion with a height gauge, and adjusting the ejector pin protrusion height to a required size by adjusting a pin pressing screw, and performing manual crimping; taking out the pressed product, and measuring the spacing H between the end faces of the metal part and the ceramic ferrule; performing end face inspection on qualified products to complete the operation.

[0016] The beneficial effects of the present invention are as follows: the assembly structure of the optical module optical interface with adjustable ceramic ferrule depth of the present invention has many significant advantages and effectively solves many challenges currently faced by the optical module industry. First, the structure realizes the up and down adjustment and fine-tuning functions of the ejector pin through the innovative active structure design, especially the sophisticated structure of the pin press fixture. This design cleverly solves the problem of different plane depths of the ceramic ferrule and the metal part caused by the diversity of the optical interface of the optical module, so that a set of structures can meet the needs of different types of isolators, greatly improving the flexibility and efficiency of production.

[0017] Secondly, the split design of the metal stopper in the universal fixture structure is another important innovation. This design allows for quick replacement of the metal stopper, effectively coping with the diversity of the metal housing of the optical interface of the optical module. This not only significantly shortens the product delivery cycle, but also greatly reduces manufacturing costs by only replacing the metal stopper instead of the entire structure. This flexibility enables the production line to quickly respond to changes in market demand and improves the competitiveness of the company.

[0018] In addition, the innovative design of the universal base has also brought significant improvements in practicality. Through the clever slotting and middle plane design, the problem of difficult placement of products with both ends is solved, and the positioning process of the capillary and the optical interface of the optical module is optimized. This design not only improves the convenience of operation, but also enhances the accuracy and stability of the assembly process.

[0019] The invention also ensures the consistency and reliability of assembly quality through standardized operation procedures and precise measurement steps. The adjustable ejector pin design and precise measurement process make the spacing between the metal part and the ceramic ferrule more precisely controlled, meeting the strict accuracy requirements of high-speed optical modules.

[0020] In summary, the assembly structure of the optical module optical interface with adjustable ceramic ferrule depth of the present invention effectively solves the diversity challenges faced by the optical module industry through its multi-faceted innovative design. It not only improves production efficiency, reduces manufacturing costs, shortens delivery cycles, but also optimizes resource utilization and improves product quality. These advantages enable companies to better respond to the growing market demand for high-speed optical modules such as 200G, 400G, 800G and even 1.6T, providing strong support for companies to gain competitive advantages in the rapidly developing network communication industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0022] Figure 1 A schematic diagram of an elastic ejector unit of an assembly structure of an optical module optical interface with adjustable ceramic ferrule depth according to the present invention;

[0023] Figure 2 An assembly diagram of an elastic ejector unit of an assembly structure of an optical module optical interface with adjustable ceramic ferrule depth according to the present invention;

[0024] Figure 3 Schematic diagram of a universal base assembly structure of an optical module optical interface with adjustable ceramic ferrule depth according to the present invention

[0025] Figure 4 A schematic diagram of an assembly structure of an optical module optical interface with adjustable ceramic ferrule depth according to the present invention;

[0026] Figure 5 A schematic diagram of a suspended capillary of an assembly structure of an optical module optical interface with adjustable ceramic ferrule depth according to the present invention;

[0027] Figure 6 An exploded view of an assembly structure of an optical module optical interface with adjustable ceramic ferrule depth according to the present invention;

[0028] Figure 7 This is a schematic diagram of the optical interface of the optical module. DETAILED DESCRIPTION

[0029] 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.

[0030] Example 1

[0031] like Figure 1-7As shown, this embodiment provides an assembly structure of an optical module optical interface with adjustable ceramic ferrule depth, which is used to accurately adjust the spacing H between the end faces of the metal part 8 and the ceramic ferrule 7 in the optical module optical interface. Among them, the optical module optical interface is composed of a metal part 8, a ceramic ferrule 7, an optical fiber 6 and a capillary 15. The optical fiber 6 is embedded in the inner hole of the ceramic ferrule 7. The metal part 8 wraps the ceramic ferrule cylinder. The end face of the ceramic ferrule is 1.3mm±0.02mm away from the end face of the metal part. The tail end is a capillary or other connector. The end face angle of the ceramic ferrule is 4°, and the high point of the ferrule needs to be parallel to the chamfered surface of the capillary. The difficulty of assembling the above optical module optical interface is that it is difficult to adjust the spacing H between the end faces of the metal part 8 and the ceramic ferrule 7 in time as needed. The core components of the structure include a universal base 1, a metal part limit block 2 and an elastic ejector unit.

[0032] The universal base 1 is the basic support structure of the entire structure and is made of high-strength alloy material to ensure overall stability and durability. The universal base 1 adopts a cylindrical structure. The bottom of the universal base 1 is a screw hole, which is convenient for the universal base 1 to be installed and fixed with other equipment. A first avoidance hole 1.1 is provided along its axial direction for the passage of the optical fiber 6. An avoidance groove 1.2 is provided adjacent to the first avoidance hole 1.1. The avoidance groove 1.2 is a square groove. The avoidance groove 1.2 is used to avoid the capillary 15. At the same time, the avoidance groove 1.2 can be used to determine the installation direction of the capillary 15; further, the avoidance groove 1.2 has a plane, which can achieve the 90° angle positioning requirement and bend the optical fiber when it is too long without affecting the verticality and stability of the top metal part 8 and the ceramic ferrule 7. This design ensures the smooth installation of the optical fiber 6 and the capillary 15 without affecting the stability of the overall structure.

[0033] A cylindrical positioning and installation groove is processed on the upper surface of the universal base 1, and the positioning and installation groove is precisely matched with the metal part limit block 2 to ensure that the metal part limit block 2 can be accurately positioned during the installation process. In order to further enhance the fixing stability of the metal part limit block 2, three fastening screws 16 are set on the side of the universal base 1 to firmly fix the metal part limit block 2 by radial loading.

[0034] The metal part limit block 2 is made of high-precision mold steel material, and is provided with a metal part installation groove 2.1 coaxial with the universal base 1. The metal part installation groove 2.1 accurately matches the optical module optical interface metal part 8 of common specifications. At the bottom center of the metal part installation groove 2.1, a second avoidance hole 2.2 with a diameter larger than the optical fiber 6 is provided. The second avoidance hole 2.2 is precisely aligned with the first avoidance hole 1.1 on the universal base 1 to ensure that the optical fiber 6 can pass smoothly. In addition, a radial installation groove 2.3 is also provided on the side of the metal part limit block 2. The radial installation groove 2.3 is used for the lateral installation of the optical fiber 6 (that is, the optical interface of the optical module can be crimped after being placed in the fixture from the side), and is interconnected with the metal part installation groove 2.1 and the second avoidance hole 2.2 to form a complete optical fiber installation channel.

[0035] The elastic ejector unit is the core component of this structure, responsible for accurately adjusting the distance H between the metal part 8 and the ceramic ferrule 7. The unit is mainly composed of a limit block 3, a pressure rod limit block 4, a pressure needle fixture 9, a spring limit fixture 10, an ejector 11 and a spring 12. The limit block 3 and the pressure rod limit block 4 are made of high-strength mold steel material, the two are coaxially arranged, and the middle is connected by the pressure needle fixture 9. The pressure needle fixture 9 is made of precision-machined mold steel material, can move freely in the axial direction, and is provided with a center hole inside for installing the ejector 11.

[0036] The outer circumference of the needle clamp 9 is provided with an axially movable spring limit clamp 10, which is made of high-strength aluminum alloy. Three fasteners 13 are evenly distributed on the outer circumference of the spring limit clamp 10, which use M2 hexagon socket screws to accurately adjust the position of the spring limit clamp 10. The outer side of the needle clamp 9 is covered with a highly elastic stainless steel spring 12, which ensures that the appropriate pressure can be maintained during the adjustment process.

[0037] The outer diameter of the ejector pin 11 is 1.29±0.01mm. The ejector pin 11 has an inner hole coaxially arranged and extending along its axial direction. The inner hole has a diameter of 0.4mm, forming a circular tube. The circular tubular ejector pin 11 solves the problem of damaging the optical fiber end face during the crimping process. Further, the ejector pin 11 is preferably made of tungsten steel.

[0038] The ejector pin 11 is inserted into the inner hole of the pressure needle fixture 9, and the front end of the ejector pin 11 is protruding, and the rear end of the ejector pin 11 is supported by the pressure needle screw 18, so that the length of the ejector pin 11 can be adjusted and it will not move after being stressed; the ejector pin 11 and the pressure needle fixture 9 are locked by the ejector screw 14 on the side, so that the ejector pin 11 will not fall when suspended; then the pressure needle fixture is inserted into the pressure rod limit block 4, and then the spring 12 is inserted, and the spring is limited by the spring limit fixture at the other end, and the two sides are fixed with fasteners 3 to keep the spring in a compressed state. When no crimping is achieved, the ejector pin 11 is suspended.

[0039] The adjustment assembly is the key to achieve precise adjustment, including the pressure needle screw 18 and the ejector screw 14. The pressure needle screw 18 adopts the M3 specification and is coaxially threaded with the pressure needle fixture 9. The axial precise adjustment of the ejector 11 can be achieved by rotating it, and each rotation can achieve an axial displacement of 0.5mm. The ejector screw 14 adopts the M2 specification and is installed on the side of the pressure needle fixture 9. It can move radially and is used to apply radial force to the ejector 11 to ensure that the ejector 11 remains stable during the adjustment process.

[0040] The limit block 3 adopts a cylindrical structure, and there are two screw holes and two precision positioning pin holes on the upper end of the limit block 3. The circular groove on the upper end of the limit block 3 is inlaid with the front end of the pressure needle fixture 9; the positioning pin hole of the limit block 3 is structurally limited by a ceramic positioning pin 5, and the limit block 3 and the pressure rod limit block 4 are fastened by screws 17 at the upper end of the limit block 3; through this design, it can ensure that when the ejector moves up and down, the pressure needle fixture 9 can move vertically up and down and be restricted up and down, and the movement space is 5mm;

[0041] The bottom of the pressure rod limit block 4 is provided with a positioning installation groove that cooperates with the metal part limit block 2. The pressure rod limit block 4 ensures that the two can be accurately docked. At the center of the pressure rod limit block 4, there is also a guide groove with a diameter of 5mm, which is used to accurately cooperate with the pressure needle fixture 9 to ensure the coaxiality of the entire elastic ejector unit.

[0042] In actual use, the operator first places the metal part 8 into the metal part installation groove 2.1 of the metal part stopper 2, and then adjusts the mark on the metal part 8 to be parallel to the angle high point of the ceramic ferrule 7. Next, the protruding height of the ejector pin 11 is adjusted by adjusting the pressure pin screw 18 until the required size is reached. In this process, the spring 12 always maintains appropriate pressure to ensure that the ejector pin 11 is in contact with the end face of the ceramic ferrule 7. Finally, the operator can verify the accuracy of the adjustment by measuring the distance H between the end faces of the metal part 8 and the ceramic ferrule 7.

[0043] This embodiment can not only adapt to optical interfaces of optical modules of different specifications, but also achieve fast and accurate adjustment, thereby greatly improving production efficiency and product quality.

[0044] Example 2

[0045] This embodiment introduces an assembly structure of an improved optical module optical interface with adjustable ceramic ferrule depth. On the basis of retaining the core functions of Embodiment 1, some structural optimizations and functional enhancements are performed to adapt to a wider range of application scenarios and higher precision requirements.

[0046] Firstly, the universal base 1 is made of precision die steel, which has higher strength and better processing accuracy than the common alloy material in Example 1. It is also small in size and light in weight, making it easy to operate and carry.

[0047] On the upper surface of the universal base 1, the bottom of the positioning installation groove can be designed in a V shape, which can provide more precise positioning and more stable installation. The number of fastening top screws 16 is increased to four, the specification is upgraded to M4, and a special anti-loosening design is adopted to ensure that a stable fixing effect can be maintained after long-term use.

[0048] The material of the metal part stopper 2 is upgraded to precision mold steel material, which improves wear resistance and precision stability. The metal part installation groove 2.1 adopts an adjustable design, which can adapt to different specifications of metal parts 8 with diameters ranging from 9mm to 11mm through a set of precision gaskets. The second avoidance hole 2.2 also adopts a variable diameter design and is used in conjunction with the first avoidance hole 1.1 on the universal base 1. The design of the radial installation groove 2.3 has also been optimized, using an arc transition, which reduces the stress concentration of the optical fiber 6 during the installation process and increases the service life of the optical fiber.

[0049] The design of the elastic ejector unit has also been significantly improved. The limit block 3 and the pressure rod limit block 4 are made of precision mold steel, which has excellent wear resistance and can maintain high precision during long-term use. The pressure needle fixture 9 is upgraded to titanium alloy material, and a precision ball bearing design is used inside, which greatly reduces the friction of axial movement and improves the sensitivity and accuracy of adjustment.

[0050] The internal structure of the needle clamp 9 has also been innovatively designed, with an additional fine-tuning mechanism. This fine-tuning mechanism consists of a set of precision gears, which can convert the rotational motion of the needle screw 18 into a finer linear motion, achieving an axial displacement of 0.001mm for every 0.1 degree of rotation, greatly improving the accuracy of adjustment. The ejector pin 11 is made of special tungsten steel material with extremely high hardness and wear resistance, ensuring that it can maintain accurate dimensions after long-term use.

[0051] The spring limit clamp 10 is upgraded to aviation-grade aluminum alloy material, which improves the structural strength and stability while maintaining lightweight. The number of fasteners 13 is increased to four, and a special anti-loosening thread design is adopted to ensure that it will not loosen during frequent adjustments. The spring 12 is made of stainless steel material, which has better elasticity and fatigue strength. Its free length is increased to 35mm, and the compressed length is reduced to 15mm, providing a larger 20mm compression margin, which can adapt to a wider range of adjustments.

[0052] The design of the adjustment component has also made a major breakthrough. The pressure needle screw 18 adopts a double pitch design, and coarse adjustment and fine adjustment can be completed on the same screw. The coarse adjustment pitch is 1mm / turn, and the fine adjustment pitch is 0.1mm / turn. The operator can quickly switch the adjustment mode as needed. The top screw 14 adopts a special eccentric wheel design, which can achieve more precise radial force adjustment by rotation. Every 1 degree of rotation corresponds to a force change of 0.01N.

[0053] The positioning and installation groove of the pressure rod limit block 4 adopts a magnetic adsorption design, which greatly improves the efficiency of installation and removal while ensuring accurate positioning. The guide groove adopts a special spiral groove design, which can provide a small rotational movement while the pressure needle fixture 9 moves axially, further improving the accuracy of adjustment.

[0054] During use, this improved structure not only maintains all the advantages of Example 1, but also provides higher precision and a wider range of applications. The operator can monitor the distance H between the metal part 8 and the ceramic ferrule 7 in real time through a precise digital display, and the adjustment accuracy can reach 0.001mm. At the same time, the structure is also equipped with an automatic data recording function, which can automatically save the parameters adjusted each time, facilitating subsequent quality tracking and process optimization.

[0055] Example 3

[0056] This embodiment introduces in detail a method for using an assembly structure of an optical module optical interface with adjustable ceramic ferrule depth. The method combines precise mechanical operation and strict quality control process to ensure the production of high-quality optical module optical interfaces. The following is a detailed description of the steps of the method:

[0057] Step 1: Initial assembly of optical fiber and ceramic ferrule

[0058] First, the operator needs to accurately insert the optical fiber 6 into the inner hole of the ceramic ferrule 7. This step needs to be performed in a dust-free environment, and the operator should wear dust-free gloves and anti-static clothing. Use a precision microscope to assist the operation to ensure that the optical fiber 6 is not damaged during the insertion process. After the optical fiber 6 is inserted, it is bonded with a special optical-grade epoxy resin glue. The amount of glue needs to be precisely controlled, and a precision dispensing machine is usually used, with the amount of glue dispensed each time controlled at around 0.01 ml. After bonding is completed, place the assembly in a constant temperature oven for curing. The curing temperature is set to 85°C and the time is 2 hours to ensure that the glue is fully cured and reaches optimal strength.

[0059] Step 2: Precision grinding of ceramic ferrule

[0060] After curing is completed, the ceramic ferrule 7 is ground using a high-precision fiber end face grinder. The grinding process is divided into three stages: rough grinding, fine grinding, and polishing. A 9μm diamond grinding disc is used for rough grinding, and a 1μm diamond grinding disc is used for fine grinding. The grinding angle is usually set to 8°, and the error is controlled within ±0.1°. During the grinding process, an online end face detector is used to monitor the end face quality in real time, including parameters such as the end face curvature radius (usually required to be between 7mm-25mm), the end face vertex eccentricity (required to be less than 50μm), etc. After grinding, use a clean dust-free cloth dipped in anhydrous ethanol to clean the end face.

[0061] Step 3: Assembly of ceramic ferrule and metal parts

[0062] Carefully insert the ground ceramic ferrule 7 into the metal part 8. This step requires special attention to avoid damaging the ceramic ferrule 7 or the optical fiber 6 during the insertion process. Use a precision alignment microscope to ensure the correct position of the ceramic ferrule 7 in the metal part 8. Then, insert the other end of the optical fiber 6 into the inner hole of the capillary 15. The insertion process should be carried out slowly to avoid excessive bending of the optical fiber 6. Use the same optical glue as step 1 for bonding, but this time the amount of glue can be slightly increased to 0.015ml to ensure sufficient bonding strength. The bonded components are placed in a constant temperature oven again for curing, and the temperature and time are the same as step 1.

[0063] Step 4: Precision grinding of the capillary

[0064] Use the same grinder as in step 2 to grind the capillary 15. The grinding angle is usually set to 8° (perpendicular to the optical fiber axis), and the error is controlled within ±0.1°. During the grinding process, special attention should be paid to controlling the grinding force to avoid damage to the optical fiber. Also use an online end face detector to monitor the end face quality. After grinding, use an ultrasonic cleaner to clean it in anhydrous ethanol for 3 minutes to remove all grinding residues.

[0065] Step 5: Precise positioning of metal parts

[0066] Carefully place the processed metal part 8 into the metal part installation groove 2.1 of the metal part stopper 2. Use a precision inclinometer to adjust the mark on the metal part 8 so that it is precisely parallel to the angle high point of the ceramic ferrule 7. This step is crucial to the subsequent optical performance, so it needs to be checked and adjusted repeatedly until the angle deviation is less than 0.1°.

[0067] Step 6: Precise adjustment of ejector pin height

[0068] Use a precision digital height gauge to measure the protruding height of the assembled ejector pin 11. After the initial measurement, adjust the height of the ejector pin 11 by slowly rotating the pin press screw 18. Remeasure after each adjustment until the design height is reached. Usually, this height needs to be accurate to 0.01mm. During the adjustment process, pay attention to the contact between the ejector pin 11 and the end face of the ceramic ferrule 7 to ensure that the contact is uniform and without offset.

[0069] Step 7: Crimp Operation

[0070] Carefully put the limit structure and the movable structure on the metal part limit block. During this process, the operator needs to pay special attention to ensure that the various parts fit perfectly without gaps or misalignment. When crimping, the operator should wear protective gloves and use a special pressure sensing handle for manual crimping. The crimping force needs to be precisely controlled, usually between 50N-100N, and the specific value depends on the product specifications. During the crimping process, the operator needs to apply pressure slowly and evenly to avoid sudden impact force.

[0071] Step 8: Product Measurement

[0072] After crimping, carefully remove the product and use a precision digital depth gauge to measure the distance between the ceramic ferrule and the top of the metal part. This distance usually needs to be controlled between 0.1mm-0.3mm, and the specific value depends on the product specifications. When measuring, the probe of the depth gauge should lightly touch the surface of the product to avoid excessive pressure that may cause measurement errors. Each product needs to be measured multiple times at different locations (usually 4 points), and the average value is taken as the final result.

[0073] Step 9: Final inspection and product storage

[0074] Perform the final end face inspection on qualified products. Use a high-power microscope to check whether there are scratches, cracks or contamination on the end face. At the same time, use an insertion loss tester to measure the insertion and return loss of the end face. The insertion loss is required to be less than 0.2dB, and the return loss is required to be greater than 60dB. Products that pass all tests are considered qualified and are carefully placed in an anti-static turnover tray. The turnover tray should be dust-free in advance and marked with the product model and production batch.

[0075] Throughout the production process, operators need to strictly follow clean operating procedures and regularly check and calibrate all measuring equipment. After each step is completed, the operating parameters and measurement results need to be recorded in detail on the production record sheet for subsequent quality tracking and process optimization.

[0076] By strictly following the above steps, it is possible to ensure that the optical interfaces of the optical modules produced have high consistency and reliability, meeting the strict requirements of high-speed optical communication systems. This refined production method not only improves product quality, but also helps to improve production efficiency, reduce scrap rates, and thus reduce overall production costs.

[0077] The assembly structure of the optical module optical interface with adjustable ceramic ferrule depth using the present invention has achieved significant technological breakthroughs in many aspects. First, through the innovative design of the tungsten steel tube in the active structure, the problem of optical fiber end face damage that may occur during the crimping process is effectively solved. This improvement not only improves the quality and reliability of the product, but also significantly reduces the performance degradation and scrap rate caused by end face damage, thereby greatly improving the overall production efficiency and product yield.

[0078] Secondly, the flexible and adjustable design of the pressure pin fixture in the active structure is another key innovation. This design allows the tungsten steel tube to be precisely adjusted up and down and fine-tuned, cleverly solving the challenges brought by the diversity of optical interfaces in optical modules, especially when the depth of the ceramic ferrule and the metal part plane is different. This flexibility enables the same set of structures to adapt to isolators of different specifications, greatly improving the versatility of the equipment and the flexibility of the production line.

[0079] The modular split design of the metal stop block in the universal fixture structure is another highlight of the present invention. This innovation greatly improves the adaptability of the structure, enabling it to easily cope with the diversity of the metal shell of the optical interface of the optical module. Operators only need to quickly replace the metal stop block without replacing the entire structure, which not only significantly shortens the product delivery cycle, but also greatly reduces manufacturing costs. Because companies only need to prepare stop blocks of different specifications instead of a complete structural kit, efficient use of resources is achieved.

[0080] In addition, the slotted and middle plane design of the universal base in the universal fixture structure demonstrates the ingenuity of the present invention. This design cleverly solves two key problems: on the one hand, it solves the problem of the difficulty in placing the isolator with products at both ends, significantly improving the convenience and safety of operation; on the other hand, it optimizes the positioning process of the capillary and the optical interface of the optical module, improving the accuracy and efficiency of assembly. These improvements not only improve production efficiency, but also reduce operating errors, further ensuring product quality.

[0081] The present invention achieves comprehensive performance improvements in many aspects. It significantly improves the quality and consistency of the final product through precise control of the crimping process and improved structural design. At the same time, the adjustable design enhances the flexibility and adaptability of the production line, enabling it to quickly adapt to the needs of different models. The modular design and quick change mechanism greatly shorten the switching time between different product models and speed up the overall production speed. By reducing the need for dedicated structures and improving equipment utilization, the present invention effectively reduces production costs. The optimized base design and flexible adjustment mechanism also improve the convenience of operation, reduce operating errors, and improve work efficiency.

[0082] 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.

[0083] 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 assembly structure for an optical module optical interface with adjustable ceramic ferrule depth, characterized in that: The invention is used to adjust the distance H between the end faces of a metal part (8) and a ceramic ferrule (7) of an optical interface of an optical module, and comprises a universal base (1), the universal base (1) being provided with a first avoidance hole (1.1) and arranged along its central axis for allowing an optical fiber (6) to pass through, and a avoidance groove (1.2) for avoiding a capillary (15), the universal base (1) being provided with a metal part limit block (2) and arranged coaxially therewith for positioning the metal part (8), and an elastic ejector unit for adjusting the distance H between the end faces of the metal part (8) and the ceramic ferrule (7), the ejector of the elastic ejector unit being in constant contact with the end face of the ceramic ferrule (7); The elastic ejector unit comprises a coaxially arranged limit block (3) and a pressure rod limit block (4); a pressure needle fixture (9) coaxially arranged and axially displaceable therebetween is connected between the limit block (3) and the pressure rod limit block (4); an ejector (11) coaxially arranged therewith and an adjustment component for adjusting the axial position of the ejector (11) are arranged inside the pressure needle fixture (9); a spring limit fixture (10) coaxially arranged therewith is axially displaceable on the outer peripheral surface of the pressure needle fixture (9); a spring (12) is sleeved on the outer side of the pressure needle fixture (9); the spring (12) maintains contact with the spring limit fixture (10) and the pressure rod limit block (4).

2. The assembly structure of the optical module optical interface with adjustable ceramic ferrule depth according to claim 1, characterized in that: The spring limiting clamp (10) is provided with a plurality of fasteners (13) extending in the radial direction thereof.

3. The assembly structure of the optical module optical interface with adjustable ceramic ferrule depth according to claim 1, characterized in that: The adjustment assembly comprises a pressure needle screw (18) coaxially threadedly connected to the pressure needle fixture (9) and a push screw (14) capable of radial displacement along the pressure needle fixture (9), wherein the push screw (14) radially loads the push needle (11) and the pressure needle screw (18) axially loads the push needle (11).

4. The assembly structure of the optical module optical interface with adjustable ceramic ferrule depth according to claim 1, characterized in that: The pressure rod limiting block (4) is provided with a positioning installation groove for cooperating with the metal part limiting block (2) and a guide groove for cooperating with the pressure needle clamp (9).

5. The assembly structure of the optical module optical interface with adjustable ceramic ferrule depth according to claim 1, characterized in that: The metal component limiting block (2) is provided with a metal component installation groove (2.1) coaxially arranged therewith, a second avoidance hole (2.2) for allowing the optical fiber (6) to pass through, and a radial installation groove (2.3) for installing the optical fiber (6); the metal component installation groove (2.1) is connected to the second avoidance hole (2.2), and the radial installation groove (2.3) is connected to the metal component installation groove (2.1) and the second avoidance hole (2.2).

6. The assembly structure of the optical module optical interface with adjustable ceramic ferrule depth according to claim 5, characterized in that: The universal base (1) is provided with a positioning installation groove that cooperates with the metal part limiting block (2).

7. The assembly structure of the optical module optical interface with adjustable ceramic ferrule depth according to claim 6, characterized in that: The universal base (1) is provided with a fixing top screw (16) for fixing the metal part limit block (2), and the fixing top screw (16) radially loads the metal part limit block (2).

8. The assembly structure of the optical module optical interface with adjustable ceramic ferrule depth according to claim 7, characterized in that: The universal base (1) is provided with an optical fiber installation groove (1.3) which is in communication with the first avoidance hole (1.1) and the avoidance groove (1.2).

9. A method for using the assembly structure of the optical module optical interface with adjustable ceramic ferrule depth as claimed in claim 3, characterized in that: Insert the optical fiber (6) into the inner hole of the ceramic ferrule (7), and bond and cure with optical glue; grind the ceramic ferrule (7) to the required angle and end face requirements by a grinder; insert the ceramic ferrule (7) into the metal part (8), and insert the other end of the optical fiber (6) into the inner hole of the capillary (15), and bond and cure with optical glue; grind the capillary (15) to the required angle and end face requirements by a grinder; put the metal part (8) into the metal part installation groove (2.1) of the metal part limit block (2), and adjust the mark on the metal part (8) to be parallel to the high point of the angle of the ceramic ferrule (7); measure the protruding height of the assembled ejector pin (11) with a height gauge, and adjust the protruding height of the ejector pin (11) to the required size by adjusting the pin pressing screw (18), and perform manual crimping; take out the pressed product, and measure the distance H between the end faces of the metal part (8) and the ceramic ferrule (7); perform end face inspection on the qualified product to complete the operation.

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