Novel combined coupling FA structure used in optical communication optical fiber array

Abstract

The invention relates to a novel combined coupling FA structure used in an optical communication optical fiber array. Relates to the field of communication product manufacturing. The structure is composed of a fixing structure, an FAU1 structure and an FAU2 structure. The front end of a V groove of the FAU1 structure is lengthened to form an optical fiber for bearing the protruding part of the FAU2 structure. The FAU1 / FAU2 structure and the fixed seat are provided with V-shaped guide grooves at equal intervals; fAU1 and FAU2 are independently assembled and processed, a designed positioning rod is placed in a V-shaped guide groove of a fixed seat, a positioning V-shaped groove of an FAU1 structure is stacked and fixed on the fixed seat according to position requirements, a positioning V-shaped groove of an FAU2 structure is stacked on the fixed seat, the FAU1 structure is lightly pushed to enable a protruding optical fiber part to extend into a bearing table of the FAU2 structure, and the FAU2 structure is fixed on the fixed seat. Relevant coupling performance parameters are confirmed, and dispensing and curing are carried out after requirements are met, so that the coupling process is completed; therefore, efficient, rapid and accurate positioning is achieved.

Description

Technical Field

[0001] The present invention relates to the field of communication product manufacturing, and in particular to a novel combined coupling FA structure used in an optical communication optical fiber array. Background Art

[0002] The new combined coupling FA (Fiber Array) structure in optical communication fiber arrays is an advanced fiber connection technology designed to optimize optical signal transmission, improve fiber array coupling efficiency, and reduce losses. This structure has important applications in multi-channel, high-bandwidth optical communication systems, especially in the fields of integrated optics, fiber optic communications, laser radar, and fiber optic sensors;

[0003] The conventional FA optical fiber array coupling process and structure have the following defects: in the conventional FA coupling process, coupling can only be achieved through plane height or in an active state. The coupling position needs to be adjusted through repeated attempts during the coupling process, and is affected by the height of the adhesive, making it impossible to achieve fast and accurate positioning. In view of the above defects of the existing FA coupling process and the substrate and cover plate structure design process, in order to meet the above needs, a new combined coupling FA structure for use in optical communication optical fiber arrays is needed. Summary of the invention

[0004] Purpose of the invention: To provide a novel combined coupled FA structure for use in an optical communication optical fiber array, 1. To solve the problem that the existing structure cannot accurately pre-position;

[0005] 2. Solve the problem of efficient coupling;

[0006] 3. Solve the problem of glue height.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A novel combined coupling FA structure for use in an optical communication optical fiber array comprises: a fixed structure providing a component installation bearing area required in a communication optical fiber coupling process, a FAU1 structure erected on one side above the fixed structure, a FAU2 structure erected on one side above the fixed structure and vertically symmetrical to the FAU1 structure, an extended optical fiber and a mating optical fiber are respectively fixed in the FAU1 structure and the FAU2 structure, a section of the extended optical fiber passes through the FAU1 structure and extends a predetermined distance toward the FAU2 structure, and the mating optical fiber is fixed by the FAU2 structure; the extended optical fiber and the mating optical fiber are coupled and connected on the FAU2 structure, and the FAU1 structure and the FAU2 structure are combined with the fixed structure to form a bearing and fixing space required for coupling.

[0009] This design provides precise docking capabilities between fiber arrays, which is particularly important in applications that require high density, high precision and low loss. For example, multi-channel transmission in optical communications, or fiber optic sensors and optical imaging systems. Space optimization: Through clever structural design, the symmetrical configuration of the FAU1 and FAU2 structures can effectively utilize space while ensuring the docking position and coupling efficiency of the optical fibers. Thermal stability and mechanical strength: This structural design provides strong thermal stability and mechanical strength in practical applications, ensuring that the fiber array will not be affected by physical or thermal effects during long-term operation, thereby ensuring the long-term stability of the system.

[0010] According to one aspect of an embodiment of the present application, the fixing structure includes: a rectangular fixing seat with a short side dimension matching the short side dimension of the FAU1 structure and the FAU2 structure, at least two V-shaped base guide grooves symmetrically opened along the fixing seat, and a circular positioning rod body located in the base guide groove, wherein the positioning rod body forms a semicircular protrusion when placed in the base guide groove, and the semicircular protrusion is matched with the groove body formed at the lower end of the FAU1 structure and the FAU2 structure.

[0011] The purpose of the fixed structure design is to ensure the accurate docking and fixation of the FAU1 and FAU2 structures. The design of the guide groove and the positioning rod helps to improve the docking accuracy and the stability of the system. The existence of the semicircular protrusion can further enhance the adaptability of the structure and prevent the displacement or loosening of the components during use.

[0012] According to one aspect of an embodiment of the present application, the FAU1 structure includes: a mating optical fiber supporting platform located at one end close to the FAU2 structure, a mating optical fiber positioning end located at one end of the extended optical fiber supporting platform away from the FAU2 structure, a first mating positioning groove opened at the lower end of the FAU1 structure and opposite to the position of the base guide groove, a positioning pressure plate located above the optical fiber positioning platform and used to fix the position of the extended optical fiber, and a plurality of grooves are opened on the mating optical fiber supporting platform, and a single optical fiber is placed in a single groove.

[0013] The FAU1 structure can effectively fix, position and support the extended optical fiber through the cooperation of the above components. Each slot is used to place a single optical fiber, while the positioning plate ensures the stability of the optical fiber to avoid displacement during use. The core purpose of this structural design is to accurately control the spatial position of the optical fiber, reduce errors, and ensure the high quality of optical fiber connection and optical signal transmission.

[0014] According to one aspect of an embodiment of the present application, the FAU2 structure includes: an extended optical fiber carrying end located at one end close to the FAU1 structure, an extended optical fiber positioning platform arranged at one end of the optical fiber carrying end away from the FAU1 structure, a mating stabilizing end arranged at one end of the optical fiber positioning platform away from the optical fiber carrying end, a second mating positioning groove opened at the lower end of the FAU2 structure and opposite to the position of the base guide groove, a fixed pressure plate located above the optical fiber positioning platform for fixing the position of the mating optical fiber, and a plurality of grooves opened on the optical fiber carrying end and the optical fiber positioning platform, and a single optical fiber is placed in a single groove.

[0015] The design of the FAU2 structure is complementary to the FAU1 structure in terms of function, and the two work together to ensure stable positioning and precise docking of the optical fiber. The combination of the extended optical fiber bearing end, optical fiber positioning platform, and fixed pressure plate of the FAU2 structure allows the optical fiber to be smoothly transmitted between FAU1 and FAU2 and maintain the correct position. The design of the matching positioning groove and the matching stabilizing end ensures the mechanical accuracy of the structure and avoids errors caused by structural instability in the optical fiber system.

[0016] According to one aspect of the embodiment of the present application, a groove is formed between the optical fiber carrying end and the optical fiber positioning platform, and the extended optical fiber and the mating optical fiber are contact-connected at the groove position.

[0017] The groove design plays an important role in the fiber connection process, ensuring that the extended fiber and the mating fiber can be docked at a precise contact position. It not only improves the docking accuracy of the fiber, but also enhances the stability and protection of the fiber, reducing problems caused by external interference or unstable connections. This design provides a guarantee for the efficient operation of the fiber optic system, especially in optical communication and optical transmission applications that require high precision and high stability.

[0018] According to one aspect of the embodiment of the present application, the cooperation between the fixed structure, the FAU1 structure and the FAU2 structure can be divided into coupling without angle and coupling with angle;

[0019] When in the state without angle coupling, the fixed structure, FAU1 structure and FAU2 structure are all rectangular;

[0020] When in angled coupling, the fixed structure, the FAU1 structure and the FAU2 structure are arranged along a predetermined angle.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] By precisely designing and assembling the FAU1 and FAU2 structures, combined with the V-shaped guide grooves and positioning rods of the fixed seat, the optical fiber can be positioned quickly and accurately. This method ensures the precise docking of the optical fiber by utilizing the V-shaped grooves of the FAU1 structure, and ensures stable and efficient coupling between the optical fiber and the optical element through coupling performance testing and glue curing processes. Ultimately, it can improve assembly efficiency, ensure high performance and long-term stability of fiber coupling, reduce errors and optimize coupling efficiency, and meet the needs of high-precision optical applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the conventional FAU coupling assembly of the present invention.

[0024] Figure 2 It is a combined stereogram of a novel combined coupling FA structure used in an optical communication optical fiber array of the present invention.

[0025] Figure 3 The figure is a partial structural schematic diagram of a novel combined coupling FA structure used in an optical communication optical fiber array of the present invention.

[0026] Figure 4 It is an exploded view of a novel combined coupling FA structure used in an optical communication optical fiber array of the present invention.

[0027] Figure 5 It is a stereoscopic diagram of a novel combined coupling FA structure used in an optical communication optical fiber array of the present invention.

[0028] Figure 6 This is a diagram of the end face without angle coupling of a new type of combined coupling FA structure used in an optical communication optical fiber array of the present invention.

[0029] Figure 7 This is an end face angle coupling diagram of a new type of combined coupling FA structure used in an optical communication optical fiber array of the present invention.

[0030] In the figure: fixed structure 1, FAU1 structure 2, FAU2 structure 3, extended optical fiber 4, mating optical fiber 5, fixed seat 11, base guide groove 12, positioning rod 13, mating optical fiber bearing platform 21, mating optical fiber positioning end 22, first mating positioning groove 23, positioning pressure plate 24, extended optical fiber bearing end 31, extended optical fiber positioning platform 32, mating stabilizing end 33, second mating positioning groove 34, fixed pressure plate 35. DETAILED DESCRIPTION

[0031] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0032] The applicant believes that the existing conventional FAU coupling Figure 1 As shown, the Y direction cannot be accurately positioned, the Z direction cannot be accurately positioned, and it is easily affected by the height of the adhesive.

[0033] To this end, the applicant designed a new type of combined coupling FAFAU1 structure 2 for use in optical communication optical fiber arrays, which is composed of a fixed structure 1, a FAU1 structure 2 and a FAU2 structure 3. The front end of the V-groove of the FAU1 structure 2 is lengthened to receive the optical fiber of the protruding part of the FAU2 structure 3; V-shaped guide grooves with the same spacing are designed on the FAU1 / FAU2 structure 3 and the fixed seat 11; the FAU1 / FAU2 are independently assembled and processed, and the designed positioning rods are placed in the V-shaped guide grooves of the fixed seat 11, and the positioning V-grooves of the FAU1 structure 2 are used to stack and fix on the fixed seat 11 according to the position requirements, and the positioning V-grooves of the FAU2 structure 3 are used to stack on the fixed seat 11, and the FAU1 structure 2 is gently pushed to extend the protruding optical fiber part into the receiving platform of the FAU2 structure 3, and the relevant coupling performance parameters are confirmed. After meeting the requirements, the glue is dispensed and cured to complete the coupling process; so as to achieve efficient, fast and accurate positioning.

[0034] The present invention relates to a novel combined coupling FAFAU1 structure 2 for use in an optical communication optical fiber array. In practical applications, Figures 2 to 5 As shown, it is composed of a fixed structure 1, a FAU1 structure 2 and a FAU2 structure 3. The fixed structure 1 provides the stable bearing space required by the optical fiber array assembly, and is used to firmly fix other optical fiber assemblies in a predetermined position. The FAU1 structure 2 is erected on one side above the fixed structure 1, and is responsible for fixing one end of the extended optical fiber 4. The FAU2 structure 3 is erected above the fixed structure 1 and is vertically symmetrical with the FAU1 structure 2, and is responsible for fixing one end of the mating optical fiber 5. The extended optical fiber 4 extends from the FAU1 structure 2, and will extend a certain predetermined distance through the FAU1 structure 2 toward the FAU2 structure 3. This design ensures that the optical fiber signal can be transmitted from the FAU1 structure 2 to the FAU2 structure 3. The mating optical fiber 5 is fixed by the FAU2 structure 3, and is intended to be optically coupled with the extended optical fiber 4. The mating optical fiber 5 and the extended optical fiber 4 are coupled and connected at the FAU2 structure 3 to achieve efficient optical signal transmission.

[0035] The fixed structure 1 plays a supporting and positioning role, ensuring that the FAU1 and FAU2 structures 3 and the optical fiber maintain a fixed and stable position during the coupling process. It provides the necessary space for the extended optical fiber 4 and the matching optical fiber 5, so that the two can be docked at the correct position. After combining the FAU1 and FAU2 structures 3, the two FAU1 structures 2 together form a stable optical fiber coupling space, which can achieve efficient coupling between multiple optical fiber arrays and optical elements.

[0036] The fixed structure 1 includes: a fixed seat 11, a base guide groove 12 and a positioning rod 13. The base is rectangular, and the size of its short side is adapted to the short side of the FAU1 structure 2 and the FAU2 structure 3. The size of the fixed seat 11 matches the length of the relevant parts of the FAU1 and FAU2 structures 3, ensuring the stability and reliability of the fixed structure 1. At least two V-shaped base guide grooves 12 are symmetrically opened along the fixed seat 11. The design of the guide groove can help locate other components, and is usually used to guide the movement of the FAU1 structure 2 and the FAU2 structure 3 or to maintain the fixed state of the components. The V-shaped groove is to provide a more stable fixing point and guiding effect to ensure the accuracy of positioning. A circular positioning rod 13 is placed in each base guide groove 12. These positioning rods 13 can play a role in ensuring the correct placement and positioning of other components (such as FAU1 and FAU2 structures 3). Their position and shape are to accurately match the bottom ends of the FAU1 and FAU2 structures 3. When the positioning rod 13 is placed in the guide groove, a semicircular protrusion is formed. The function of this protrusion is to adapt to the groove formed at the lower end of FAU1 FAU1 structure 2 and FAU2 FAU1 structure 2, so as to provide additional stability and locking effect.

[0037] The FAU1 structure 2 includes: a matching optical fiber 5 bearing platform 21, a matching optical fiber 5 positioning end 22, a first matching positioning groove 23 and a positioning pressure plate 24. The matching optical fiber 5 bearing platform is located at one end of the FAU1 structure 2, close to the FAU2 structure 3. The function of the bearing platform is to support and fix the optical fiber. It has a certain number of grooves for placing and stabilizing the optical fiber. The matching optical fiber 5 positioning end is a component at the other end of the FAU1 structure 2, away from the FAU2 structure 3. The matching optical fiber 5 positioning end is used to accurately locate the end of the optical fiber to ensure the correct position of the optical fiber in the entire system. The first matching positioning groove 23 is located at the lower end of the FAU1 structure 2, opposite to the base guide groove 12. The function of this groove is to cooperate with other components to ensure the stable positioning and precise mechanical matching of the FAU1 structure 2. The positioning pressure plate 24 is located above the optical fiber positioning platform and is used to fix the extended optical fiber. It ensures that the optical fiber will not move or loosen during the fixing process by applying a certain pressure. There are several grooves on the matching optical fiber 5 bearing platform, each of which is used to place a single optical fiber. This design helps to accurately place and fix optical fibers one by one for subsequent operations, such as optical signal transmission or optical fiber connection.

[0038] The FAU2 structure 3 includes: an extended optical fiber 4 bearing end 31, an extended optical fiber 4 positioning platform 32, a matching stabilizing end 33, a second matching positioning groove 34 and a fixed pressure plate 35. The extended optical fiber 4 bearing end is located at one end close to the FAU1 structure 2, and its main function is to bear and support the extended optical fiber. The extended optical fiber 4 bearing end is usually used to guide the optical fiber from the FAU1 structure 2 to the FAU2 structure 3, and to ensure that the optical fiber maintains a stable and correct position during movement or operation. The extended optical fiber 4 positioning platform is located at the far end of the extended optical fiber 4 bearing end, close to the other end of the FAU1 structure 2. The role of the extended optical fiber 4 positioning platform is to ensure the precise position of the optical fiber in the system, and to achieve fine-tuning of the optical fiber through some precise adjustments to ensure the accuracy of signal transmission. The matching stabilizing end 33 is set at the far end of the optical fiber positioning platform to stabilize the position of the optical fiber. It matches the relevant components of the FAU1 structure 2 to ensure that the entire optical fiber system does not shift in position during operation. The second mating positioning groove 34 is similar to the first mating positioning groove 23 in the FAU1 structure 2. The second mating positioning groove 34 is located at the lower end of the FAU2 structure 3 and is opposite to the base guide groove 12. The function of this groove is to cooperate with the base guide groove 12 to ensure the stable positioning of the FAU2 structure 3 in the entire system and prevent the FAU1 structure 2 from loosening or shifting. The fixed pressure plate 35 is arranged above the optical fiber positioning platform to fix the optical fiber in a precise position to prevent it from loosening or shifting during operation. The fixed pressure plate 35 can ensure the stability of the optical fiber by applying appropriate pressure and precisely control the fixation of the optical fiber. A plurality of grooves are provided on the optical fiber bearing end and the optical fiber positioning platform, each of which is used to place a single optical fiber. These grooves help to accurately place each optical fiber in its designated position for subsequent operations, such as adjusting, connecting or transmitting signals to the optical fiber.

[0039] In the above embodiment, further, a groove is formed between the optical fiber carrying end and the optical fiber positioning platform, and the extended optical fiber 4 is in contact with the mating optical fiber 5 .

[0040] The presence of the groove can help accurately connect the optical fiber between the optical fiber carrying end and the optical fiber positioning platform. Through the design of the groove, the extended optical fiber 4 and the mating optical fiber 5 can be in contact at a relatively fixed and controlled position, thereby avoiding poor connection caused by optical fiber position deviation;

[0041] The groove can also effectively prevent the optical fiber from loosening due to external forces (such as vibration, pulling, etc.) during the connection process, thereby improving the stability and reliability of the system;

[0042] The contact connection between the extended optical fiber 4 and the mating optical fiber 5 at the groove position may be achieved by end-face butt joint, pressure contact or other methods. Such a design ensures that the two optical fibers can be accurately butted together when connected, ensuring high quality of signal transmission. Precise alignment of the optical fiber end faces: In order to achieve effective signal transmission, the end faces of the optical fibers need to be aligned very accurately. The groove provides a clear position reference, so that the end faces of the optical fibers can be accurately butted together, reducing the error of the contact surface and improving the signal transmission efficiency.

[0043] The groove design not only facilitates the docking of optical fibers, but also protects the optical fibers from external physical interference (such as external pulling or squeezing) to a certain extent. This helps ensure that the optical fiber always maintains a stable position during installation and use, reducing the risk of bending or breaking the optical fiber. The size and shape of the groove can be adjusted according to the connection requirements to adapt to optical fibers of different specifications and types. This design can make the optical fiber system more flexible in compatibility and adapt to the needs of multiple optical fiber types.

[0044] In actual use, each component (FAU1 and FAU2) can be assembled and processed independently first, which can reduce interference during assembly and ensure the quality and accuracy of FAU1 structure 2 and FAU2 structure 3. During assembly, FAU1 and FAU2 can be accurately stacked through the V-shaped guide groove on the fixing seat 11, and the positioning groove ensures that their relative positions remain unchanged. Stacking process: stack the FAU1 structure on the fixing seat 11, and use the V-shaped groove of the FAU structure to dock in the positioning groove. This is a key step to ensure the precise positioning of the FAU structure during assembly. The optical fiber insert gently pushes the FAU1 structure 2 so that the protruding optical fiber part can accurately extend into the receiving station of the FAU2 structure 3. Coupling performance check: after the optical fiber is inserted, relevant coupling performance tests are carried out to ensure that the optical fiber's coupling efficiency, transmission loss and other indicators meet the design requirements. After the coupling performance is confirmed to meet the requirements, the optical fiber is fixed to the FAU2 structure 3 using the glue dispensing process. The purpose of glue dispensing curing is to ensure the fixation and stability between the optical fiber and the component to avoid displacement due to vibration or external factors.

[0045] In this embodiment, if Figure 6 As shown, the above-mentioned FAU1 structure 2 and FAU2 structure 3 are not coupled at an angle. In the case of no angle coupling, the fixed structure 1, FAU1 structure 2 and FAU2 structure 3 are all rectangular. Specifically: the fixed structure 1 is the foundation or support part of the entire system, which is used to fix or support the FAU1 structure 2 and FAU2 structure 3. The FAU1 structure 2 and FAU2 structure 3, these two FAU structures are tightly coupled with the fixed structure 1, and together constitute the overall layout of the system. Because they are rectangular, they are arranged in parallel or perpendicular, without any relative angle offset between each other.

[0046] At this time, the edges and angles of FAU1 structure 2 and FAU2 structure 3 are parallel or perpendicular, and the arrangement of the entire system is a simple two-dimensional or three-dimensional orthogonal arrangement. This arrangement is generally used when there is no need to consider the directionality or rotation effect, and the interaction between FAU1 structure 2 is direct and symmetrical.

[0047] Under the premise of the above embodiment, the FAU1 structure 2 and the FAU2 structure 3 may also be set to have a predetermined angle, such as Figure 7 As shown, when in angled coupling, the fixed structure 1, FAU1 structure 2 and FAU2 structure 3 are arranged along a predetermined angle, which means that their relative positions and directions will change. Specifically:

[0048] Relative angle setting: This coupling method allows one or more FAU1 structures 2 to be rotated or offset relative to another FAU2 structure 3 at a specific angle (for example, 45 degrees, 30 degrees, etc.). Angle adjustment is required when it is necessary to optimize the spatial layout, reduce mechanical interference, or to improve the stability and performance of the system. In the case of angled coupling, the FAU1 structure 2 and the FAU2 structure 3 may no longer be parallel to the fixed structure 1, but are set at a predetermined angle. This arrangement usually affects the distribution of force, the force characteristics of the system, and the way the various components interact with each other.

[0049] In the above two embodiments, without angle coupling: it is usually a simpler, symmetrical layout, suitable for application scenarios that do not require complex mechanical coordination. FAU1 structure 2 and FAU2 structure 3 remain orthogonal or parallel, avoiding the complexity caused by angles.

[0050] Angled coupling: This layout is more flexible and may require more considerations (such as mechanical analysis, thermal expansion, etc.), but it can provide better performance or more efficient space utilization in some cases. The angle setting can change the dynamic characteristics of the FAU structure and affect the mechanical behavior or range of motion of the entire system.

[0051] In the above two embodiments, the positioning rod can be designed on the back or front of the V-groove according to application requirements;

[0052] V-groove front design positioning rod: suitable for scenes that require direct operation or observation from the front. When it is necessary to achieve the positioning and docking of FAU1 structure 2 and FAU2 structure 3 through front contact, it is also convenient for them to cooperate. The front design can facilitate the access of light or sensors, and improve the intuitiveness and efficiency of operation.

[0053] Positioning rod designed on the back of the V-groove: suitable for when the positioning structure needs to be hidden or protected in a location that is not easily accessible to avoid external interference.

[0054] The back design is more suitable for scenarios with high requirements for mechanical stability or strength, avoiding wear or damage caused by frequent operation or exposure. It can improve the appearance neatness and space utilization efficiency of FAU1 structure 2, FAU2 structure 3 and positioning structure 1, especially in situations where appearance and aesthetics are required.

[0055] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A novel combined coupling FA structure for optical communication optical fiber array, characterized in that: include: The fixed structure provides a component installation bearing area required in the communication optical fiber coupling process; The FAU1 structure is erected on one side above the fixed structure; The FAU2 structure is erected above the fixed structure and on one side vertically symmetrical to the FAU1 structure; The extended optical fiber and the matching optical fiber are fixed in the FAU1 structure and the FAU2 structure respectively; The extended optical fiber extends through the FAU1 structure toward the FAU2 structure by a predetermined distance, and the matching optical fiber is fixed by the FAU2 structure; the extended optical fiber and the matching optical fiber are coupled and connected on the FAU2 structure; The FAU1 structure and the FAU2 structure are combined with the fixed structure to form a bearing and fixing space required for coupling.

2. According to claim 1, a novel combined coupling FA structure for use in an optical communication optical fiber array is characterized in that: The fixed structure comprises: The fixing seat is rectangular, and the short side size is adapted to the short side size of the FAU1 structure and the FAU2 structure; The base guide grooves are symmetrically provided with at least two V-shaped guide grooves along the fixing base; A positioning rod body, located in the guide groove of the base and in a circular shape; After the positioning rod is placed in the guide groove of the base, a semicircular protrusion is formed, and the semicircular protrusion is adapted to the groove formed at the lower ends of the FAU1 structure and the FAU2 structure.

3. According to claim 1, a novel combined coupling FA structure for use in an optical communication optical fiber array is characterized in that: The FAU1 structure includes: Cooperate with the optical fiber bearing platform, located at one end close to the FAU2 structure; Cooperating with the optical fiber positioning end, it is located at the end of the extended optical fiber supporting platform away from the FAU2 structure; The first matching positioning groove is provided at the lower end of the FAU1 structure and is opposite to the guide groove of the base; A positioning plate, located above the optical fiber positioning platform, for fixing the position of the extended optical fiber; The optical fiber supporting platform is provided with a plurality of grooves, and a single optical fiber is placed in a single groove.

4. The novel combined coupling FA structure for use in an optical communication optical fiber array according to claim 1, characterized in that: The FAU2 structure includes: An extended optical fiber carrying end is located at one end close to the FAU1 structure; An extended optical fiber positioning platform is arranged at one end of the optical fiber carrying end away from the FAU1 structure; A matching stabilizing end is arranged at an end of the optical fiber positioning platform away from the optical fiber bearing end; The second matching positioning groove is provided at the lower end of the FAU2 structure and is opposite to the guide groove of the base; A fixed pressing plate, located above the optical fiber positioning platform, used to fix the position of the mating optical fiber; The optical fiber carrying end and the optical fiber positioning platform are provided with a plurality of grooves, and a single optical fiber is placed in a single groove.

5. The novel combined coupling FA structure for use in an optical communication optical fiber array according to claim 4, characterized in that: A groove is formed between the optical fiber carrying end and the optical fiber positioning platform, and the extended optical fiber and the matching optical fiber are contacted and connected at the position of the groove.

6. The novel combined coupling FA structure for use in an optical communication optical fiber array according to claim 1, characterized in that: The cooperation between the fixed structure, the FAU1 structure and the FAU2 structure can be divided into no angle coupling and angle coupling; When in the state without angle coupling, the fixed structure, FAU1 structure and FAU2 structure are all rectangular; When in angled coupling, the fixed structure, the FAU1 structure and the FAU2 structure are arranged along a predetermined angle.

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