A fiber optic coiling device, an optical engine, and an optical module

Abstract

This utility model discloses an optical fiber coiling device, an optical engine, and an optical module, including a coiling frame and a limiter. The coiling frame has a first surface and a second surface facing each other. The second surface is provided with slots for accommodating or aligning the first and second optical components. The first surface is provided with an arc-shaped coiling channel, a coiling structure, and multiple positioning blocks. The limiter cooperates with the first surface of the coiling frame. After the first optical fiber leading from the slot of the first optical component on the second surface reaches the first surface, it is coiled and limited within the arc-shaped coiling channel. The second optical fiber leading from the slot of the second optical component on the second surface is guided and limited to be led out along a non-coiling path. This utility model achieves effective management and reliable fixation of different optical fiber paths, ensuring the bending radius of the optical fiber. At the same time, the coiling frame integrates an optical component protective cover and auxiliary sealing function, effectively optimizing the internal space of the module, simplifying the assembly process, and improving the reliability and production efficiency of the optical module.

Description

Technical Field

[0001] This utility model relates to the optical fiber layout structure inside an optical module, and more particularly to an optical fiber coiling device, an optical engine, and an optical module. Background Technology

[0002] With the rapid development of technologies such as cloud computing, big data, and artificial intelligence, data centers and communication networks are constantly demanding higher data transmission rates. To meet the ever-increasing bandwidth requirements, 400G, 800G, and even higher-speed optical modules have become a key focus of industry research and development and application. At the same time, to improve device integration density and reduce power consumption and cost, the packaging size of optical modules is showing a continuous trend towards miniaturization, evolving from early CFP and CFP2 packages to smaller QSFP-DD and OSFP packages.

[0003] The reduction in the size of optical module packages has brought significant challenges to the layout and structural design of their internal components, especially placing higher demands on the routing of optical fibers used to transmit optical signals. Inside the optical module, the optical fibers connecting optical devices such as lasers, modulators, and detectors to optical interfaces (such as MPO or LC interfaces) are typically bare fibers without an external plastic sheath to save space and improve cabling flexibility.

[0004] In existing technologies, there is a relatively simple fiber optic deployment method, which can be called "direct connection" deployment. In this method, the length of the bare fiber used is roughly equivalent to the physical distance between the optical input / output on the optical device and the optical interface connector of the optical module, making the fiber path relatively direct. The advantage of this method is that the assembly process is relatively simple and quick. However, its disadvantages are also quite obvious: due to the strict limitation on fiber length, during assembly, transportation, or long-term use, the fiber may experience significant tensile or bending stress due to factors such as internal structural tolerances of the module, thermal expansion and contraction, or external vibrations. Especially when the cabling path requires corners, shorter fibers cannot form a sufficiently large bending radius, easily exceeding the minimum bend radius limit allowed by the fiber itself. This not only leads to increased optical signal transmission loss and affects communication quality, but more seriously, it may cause surface wear, microcracks, or even direct breakage of the fiber, posing a serious risk to product reliability.

[0005] To overcome the reliability issues associated with direct-connection deployments, especially in high-speed optical modules where space utilization and reliability are paramount, the industry commonly employs a "fiber coiling" fiber optic deployment scheme. The core feature of this scheme is that the length of the bare fiber used is significantly longer than the straight-line distance between the optical device and the optical interface. This redundant fiber length is coiled, stored, and fixed within a specific area (the fiber coiling area) pre-reserved inside the optical module with a large bending radius. By reserving sufficient fiber slack and ensuring that the bending radius at every point along the coiling path exceeds the minimum bending radius requirement of the fiber, various stresses can be effectively buffered and absorbed. This significantly reduces the risk of fiber failure due to excessive bending loss or physical damage (such as wear or breakage), thereby ensuring the long-term stable operation of the optical module.

[0006] However, although the coiled fiber solution solves the reliability shortcomings of the direct-connect solution, with the trend of continuous miniaturization of optical modules, how to rationally plan the coiled fiber path, effectively fix redundant optical fibers, avoid fiber cross-entanglement, and ensure assembly efficiency within extremely limited internal space remains a technical problem that needs continuous optimization and improvement in the structural design of optical modules. Utility Model Content

[0007] The technical problem this utility model aims to solve is to address the reliability shortcomings of the direct-connection solution in the existing fiber coiling solution by providing a fiber coiling device, an optical engine, and an optical module. This not only enables the coiling arrangement of optical fibers but also serves as a cover plate to protect and seal the optical components inside the original optical module. It optimizes the internal spatial arrangement of the optical module and the assembly process, avoiding stability risks caused by contact or damage between optical fibers and components or between optical fibers during coiling.

[0008] The technical solution adopted by this utility model to solve its technical problem is as follows: This utility model discloses an optical fiber coiling device, including a coiling frame, the coiling frame having a first surface and a second surface opposite to each other, and at least one support portion provided on the coiling frame, suitable for fitting with a PCB board or optical module base in an optical module; a first optical component slot, provided on the second surface of the coiling frame, suitable for accommodating or aligning a first optical component; a second optical component slot, provided on the second surface of the coiling frame, suitable for accommodating or aligning a second optical component; an arc-shaped coiling channel, provided on the first surface of the coiling frame; at least one coiling structure provided in the arc-shaped coiling channel and a plurality of fixed supports provided on the outer peripheral surface of the coiling frame. The fiber optic cable includes a positioning block, a guide channel disposed on the second surface of the fiber optic cable holder, and a limiter adapted to engage with the first surface of the fiber optic cable holder. The arc-shaped fiber optic cable channel, the fiber optic cable structure, the positioning block, and the limiter cooperate to form a first limiting structure, which is used to coil and limit the first optical fiber that extends from the first optical component slot on the second surface to the first surface. The guide channel and the auxiliary positioning block cooperate to form a second limiting structure, which is used to guide and limit the second optical fiber that extends from the second optical component slot on the second surface, guiding the second optical fiber along a non-coiling path.

[0009] In a preferred embodiment of this utility model, the fiber tray further includes at least one limiter fixing post, the limiter includes at least one limiter fixing hole, and the limiter is fixed to the first surface of the fiber tray by cooperating with the limiter fixing post through the limiter fixing hole.

[0010] In a preferred embodiment of this utility model, the bending radius of the arc-shaped fiber channel disposed on the first surface is greater than the minimum bending radius of the optical fiber.

[0011] In a preferred embodiment of the present invention, the first optical component slot and the second optical component slot disposed on the second surface are adapted to protect the corresponding first optical component and the second optical component after the fiber optic tray is installed.

[0012] In a preferred embodiment of this utility model, the support portion of the fiber optic tray is fixed to the PCB board and / or the optical module base by sealant.

[0013] In a preferred embodiment of this utility model, the fiber optic coiler further includes a second or third fiber optic coil structure on the first surface, wherein the second or third fiber optic coil structure defines an arc-shaped fiber optic coil channel branch; the guide channel is adapted to guide the second optical component fiber led out from the second optical component slot on the second surface to the first surface and enter the arc-shaped fiber optic coil channel branch or the arc-shaped fiber optic coil channel for coiling.

[0014] In a preferred embodiment of the present invention, the fiber optic coiler further includes a second fiber optic coil structure and a third fiber optic coil structure on the first surface, the second fiber optic coil structure and the third fiber optic coil structure defining an arc-shaped fiber optic coil channel branch; the guide channel is adapted to guide the second optical component optical fiber led out from the second optical component slot on the second surface to the first surface and enter the arc-shaped fiber optic coil channel branch or the arc-shaped fiber optic coil channel for coiling.

[0015] This utility model also discloses an optical engine, including a PCB board; a first optical component and a second optical component, which are arranged side by side on the PCB board and respectively have first optical component optical fibers and second optical component optical fibers; and an optical fiber coiling device, wherein the coiling frame is arranged on the PCB board, and the first optical component slot and the second optical component slot on its second surface are respectively aligned with the first optical component and the second optical component, and a first limiting structure on its first surface is used to limit the first optical component optical fiber, and a second limiting structure is used to limit the second optical component optical fiber.

[0016] In a preferred embodiment of this utility model, the fiber optic coil body includes a first optical component slot and a second optical component slot, which are respectively aligned with and accommodate the first optical component and the second optical component. The fiber optic coil body is fixed to the PCB board and / or the optical module base by its support portion using sealant, and provides sealed protection for the first optical component and the second optical component.

[0017] This utility model also discloses an optical module, including an optical module housing, the optical module housing including an optical module base and an optical module cover plate; and an optical engine, the optical engine being disposed inside the optical module housing.

[0018] The beneficial effects of this invention are as follows: This invention provides an innovative solution, the core of which lies in designing a fiber coiling frame with a first surface and a second surface, with the optical component slots located on the second surface and the main arc-shaped fiber coiling channels located on the first surface. This layout cleverly utilizes space, achieving effective separation between the optical component installation area and the fiber coiling area. The first optical fiber, extending from the second surface and reaching the first surface, is coiled using a first limiting structure and reliably fixed using a limiter, effectively solving the problems of redundant management and bending radius control of long optical fibers, and avoiding stress damage. Simultaneously, the second limiting structure provides non-coiling guidance and limiting for the second optical fiber extending from another optical component on the second surface, meeting the management needs of different fiber paths. This not only achieves orderly and reliable management of different optical fibers, preventing cross-interference and damage between fibers, but also provides preliminary positioning and protection for the optical components through the slot design, laying the foundation for subsequent assembly.

[0019] Based on this, the present invention further specifies that the limiter and the first surface of the fiber tray are fixed by a specific fixing post and fixing hole. This design ensures that the limiter is installed firmly and reliably, thereby ensuring the continuous effectiveness of limiting the top of the first optical fiber, preventing the optical fiber from accidentally coming out of the channel, and improving the stability of the structure and the reliability of the assembly.

[0020] Furthermore, this utility model explicitly stipulates that the bending radius of the arc-shaped fiber coil channel set on the first surface is greater than the minimum bending radius of the optical fiber. This is the key to achieving high-reliability fiber coiling, directly ensuring the transmission performance of the coiled optical fiber, avoiding the risk of increased signal loss or physical damage caused by excessive bending, and significantly improving the signal transmission quality and long-term reliability of the optical module.

[0021] Furthermore, this utility model emphasizes the protective function of the optical component slots provided on the second surface. After the fiber optic cable is installed, these slot structures can physically shield and protect the optical components that are housed or aligned, preventing accidental contact or damage during subsequent assembly processes or module operation, thereby further enhancing the protection effect on the core optical devices.

[0022] Furthermore, the method proposed in this utility model for fixing the fiber optic cable support to the PCB board or optical module base using sealant not only achieves stable installation of the fiber optic cable itself, preventing displacement during use, but more importantly, the sealant fills the gaps at the joints, effectively sealing the optical component area covered by the second surface of the fiber optic cable, preventing the intrusion of external pollutants such as dust and moisture, and improving the environmental adaptability and overall sealing level of the optical module.

[0023] Furthermore, this utility model clarifies that the first limiting structure can support the first optical fiber to be coiled at least once in the arc-shaped fiber channel on the first surface. This gives the structure the ability to manage longer redundant optical fibers, enhances the design flexibility, can adapt to a wider range of optical fiber length requirements, and ensures effective stress release and reliable fixation even when the optical fiber margin is large.

[0024] Furthermore, this utility model provides a more flexible design variant. By adding a fiber coiling structure and branch channels to the first surface, the second optical fiber, which was originally non-coiled and guided, can also be guided from the second surface to the first surface for coiling as needed. This greatly enhances the adaptability of the fiber coiling frame to different internal wiring requirements, allowing both types of optical fibers to be coiled or directly connected as needed, thus improving the versatility of the design.

[0025] Furthermore, this invention integrates the aforementioned fiber optic coil structure into the optical engine. By precisely mounting the fiber optic coil onto a substrate containing the PCB and optical components, the slots on the second surface of the coil are aligned with the optical components. The limiting structures on the first and second surfaces act on the corresponding optical fibers, thereby constructing a compact, functionally integrated, and reliable optical path management optical engine subsystem. This not only ensures the effective implementation of fiber optic management but also facilitates the modular production and testing of the optical engine, optimizing the entire optical module manufacturing process.

[0026] Furthermore, at the optical engine level, this invention reiterates the dual function achieved by the fiber tray after being fixed with sealant: while managing the optical fiber, its second surface and slot structure, combined with the sealant, form an effective sealing and protective cover for the underlying optical components. This integrated design reduces the number of separate covers and seals, optimizes the internal space utilization of the optical engine, and lowers costs and assembly complexity.

[0027] Ultimately, this invention integrates the optical engine, incorporating the aforementioned optimized design, into the optical module housing, forming a complete optical module product. Therefore, the technical effects achieved by this invention are progressively enhanced, from the underlying fiber coil structure design ensuring reliable management and protection of individual optical fibers, to the integration, miniaturization, sealing protection, and assembly optimization at the optical engine level. This ultimately results in the entire optical module product exhibiting higher reliability, better space utilization, a simplified assembly process, and better environmental adaptability, meeting the development needs of miniaturization and high reliability in high-speed optical modules. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 A first view of a fiber optic cable tray provided in an embodiment of this utility model; Figure 2 A second view of a fiber optic cable tray provided in an embodiment of this utility model; Figure 3 A schematic diagram of an optical engine with a mounting fiber optic tray provided for an embodiment of this utility model; Figure 4 A schematic diagram of an optical module with a fiber optic mounting tray provided for an embodiment of this utility model; Figure 5 A schematic diagram of another embodiment of the present invention. In the attached drawings: 100 - Fiber optic coil; 101 - Through hole; 102 - Arc-shaped fiber optic coil channel; 103 - Fiber optic coil structure; 104 - Limiter fixing post; 105 - First positioning block; 106 - Second positioning block; 107 - Guide channel; 108 - Third positioning block; 109 - Fourth positioning block; 110 - Second optical component slot; 111 - First optical component slot; 112 - First support part; 113 - Second support part; 114 - Third support part; 115 - Fourth support part; 11 6-Arc-shaped fiber optic channel branch; 117-Second fiber optic structure; 118-Third fiber optic structure; 200-Limiter; 201-Limiter fixing hole; 202-Limiter limiting block; 300-Optical engine; 310-First optical component; 311-First optical component fiber; 320-Second optical component; 321-Second optical component fiber; 322-Second optical component adapter; 330-Limiting gasket; 340-PCB board; 400-Optical module base; 500-Optical module cover. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] It should be noted that in the description of this utility model, the terms "upper," "lower," "inner," "outer," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. Unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Example 1 This embodiment provides an optical fiber coiling device for optical modules and its application, aiming to solve the problems of bare fiber deployment in high-speed, miniaturized optical modules being susceptible to stress and posing reliability risks, while optimizing internal space utilization and assembly processes. (Refer to...) Figures 1 to 4 The fiber optic coiling device mainly includes a coiling frame 100 and a corresponding limiter 200. This structure is particularly suitable for integration into an optical engine 300 and final assembly into an optical module housing, which consists of an optical module base 400 and an optical module cover 500.

[0032] The fiber optic tray 100 is a key functional integrated component, typically made of engineering plastics such as PBT and LCP, which possess good mechanical strength, dimensional stability, insulation, and ease of precision molding, and is integrally formed through processes such as injection molding. The fiber optic tray 100 has opposing first surfaces, typically the upper surface facing the optical module cover, and second surfaces, typically the lower surface facing the PCB board and optical components. The fiber optic tray 100 is provided with multiple support portions, as shown in the figure: first support portion 112, second support portion 113, third support portion 114, and fourth support portion 115. These support portions play a crucial supporting and positioning role during the installation of the fiber optic tray 100. Specifically, the bottom surfaces of the first support portion 112 and the third support portion 114 are designed to fit tightly against the surface of the PCB board 340 in the optical engine 300. Simultaneously, the sides or specific structural designs of the first support portion 112 and the second support portion 113 are designed to mate with the sidewalls or specific features of the BOX housing of the first optical component 310 (typically an optical emission assembly TOSA or an assembly containing a multiplexer). This mating relationship effectively prevents undesirable relative displacement of the fiber optic coiler 100 relative to the first optical component 310 and the PCB board 340 during fiber coiling and subsequent adhesive dispensing operations, providing a reliable reference positioning for precise fiber optic deployment and subsequent fixation. The fourth support 115 is designed to fit against the inner surface or specific structure of the optical module base 400, further enhancing the installation stability of the fiber optic coiler within the entire module. This multi-point, multi-directional support and positioning design ensures the precise position of the fiber optic coiler in three-dimensional space.

[0033] The second surface of the fiber tray 100 is recessed to form at least two optical component slots: a first optical component slot 111 and a second optical component slot 110. The shape, size, and position of these two slots are precisely designed to accommodate or precisely align the first optical component 310 and the second optical component 320 in the optical engine 300, typically an optical receiver assembly (ROSA) or an assembly containing a demultiplexer. Figure 3 As shown, after the fiber optic tray 100 is installed in place, the main body of the first optical component 310 is housed in the space corresponding to the first optical component slot 111, and the main body of the second optical component 320 is housed in the space corresponding to the second optical component slot 110. These slot structures not only guide the alignment during fiber optic tray installation, but more importantly, after the fiber optic tray is fixed, the walls of the slots, especially their tops (i.e., the second surface of the fiber optic tray itself), act like a cover, providing effective physical protection for the fragile optical components below, preventing accidental mechanical damage, scratches, or contamination during subsequent fiber coiling, gluing, assembly, and even module use. In this embodiment, there may be a physical partition wall between the two slots. A closed partition wall can further enhance the isolation between the two optical components and reduce potential optical or electromagnetic crosstalk; if designed to be open, it can be considered as a larger slot.

[0034] The first surface of the fiber coiling frame 100 is the core area for realizing the fiber coiling function. An arc-shaped fiber coiling channel 102 is provided on this surface. This is a pre-designed, groove-shaped channel with a large bending radius. Its path is carefully designed, typically in an arc or near-arc shape, to guide and accommodate the redundant length portion of the first optical component fiber 311 to be coiled. Crucially, the bending radius of the arc-shaped fiber coiling channel 102 is designed to be significantly larger than the minimum allowable bending radius of the bare fiber at all locations, ensuring that the fiber does not suffer significant additional loss or long-term reliability issues due to excessive bending during coiling. The depth and width of the channel also need to be moderate. Simultaneously, one or more fiber coiling structures 103 are provided near the central area surrounded by the arc-shaped fiber coiling channel 102, serving as an inner reference for fiber coiling and, together with the outer wall of the arc-shaped fiber coiling channel 102, defining the bending path and radius of the fiber. The fiber is coiled around the fiber coiling structure 103. Multiple positioning blocks are installed near the entrance, exit, and key turning points of the arc-shaped fiber coiling channel 102, as shown in the figure, including the first positioning block 105 and the second positioning block 106. These positioning blocks are used to precisely guide the optical fiber into and out of the channel, or to regulate the path outside the channel. For example, after the first optical component fiber 311 is led out from the second surface to the first surface, it may first be guided by the second positioning block 106 to the entrance of the arc-shaped fiber coiling channel 102, and then guided out of the channel by the first positioning block 105 after coiling. In addition, one or more limiter fixing posts 104 are provided on the first surface of the fiber coiling frame 100 to cooperate with the limiter fixing holes 201 on the limiter 200 to achieve precise positioning and stable installation of the limiter 200 on the fiber coiling frame 100.

[0035] For optical fibers that do not require coiling, namely the second optical component fiber 321 in this embodiment, the fiber tray 100 also provides corresponding guiding and limiting structures. This includes a guide channel 107, which may be a relatively short, straight channel or path area with only simple bends, disposed on the fiber tray 100. Its main function is to guide the second optical component fiber 321 from the second optical component slot 110 along a predetermined, non-coiled path to its connection target, such as the second optical component adapter 322. Additional positioning blocks, such as a third positioning block 108 and a fourth positioning block 109, may also be provided near the guide channel 107 or along the path of the second optical component fiber 321. These positioning blocks are used to constrain the direction of the second optical component fiber 321 and prevent it from interfering with the first optical component fiber 311 or other components. The third positioning block 108 and the fourth positioning block 109 participate in the second limiting structure to guide the path of the second optical component fiber 321. For example, the path of the second optical fiber 321 might be: exiting from the second optical component slot 110 and directly leading out from the guide channel 107 to the second optical component adapter 322. One or more through holes 101 may also be provided on the fiber optic tray 100. The bonding between the fiber optic tray 100 and the PCB is achieved by external adhesive application. The through holes 101 serve to complete the final sealing after the fiber optic tray 100 and the PCB board 340 are bonded and assembled. Sealing can be achieved by adhesive application or tape.

[0036] The limiter 200 is typically a small component injection molded from engineering plastic. Its structure mainly includes one or more limiter fixing holes 201 on the body of the limiter 200, whose positions and dimensions precisely match the limiter fixing posts 104 on the fiber tray 100. This mating allows for quick and accurate positioning and installation of the limiter 200 on the first surface of the fiber tray 100. The side of the limiter 200 facing the fiber tray 100 has a protruding structure called the limiter limiting block 202. When the limiter 200 is installed in place, the limiter limiting block 202 is positioned directly above the first optical component fiber 311 already coiled in the arc-shaped fiber tray channel 102, restricting the upward movement of the fiber and stably holding it within the channel.

[0037] The optical engine 300 is the core subsystem of the optical module. In this embodiment, it mainly includes a PCB board 340, a first optical component 310, and a second optical component 320. They are fixedly mounted side-by-side on the PCB board 340 and electrically connected to it. The first optical component 310 leads out a first optical fiber 311, and the second optical component 320 leads out a second optical fiber 321. Each optical fiber is typically connected to an adapter at its end.

[0038] The installation and fiber optic deployment process of the fiber optic coil structure on the optical engine is roughly as follows: First, place the fiber optic coil 100 onto the PCB board 340 where the optical components have been installed, carefully aligning it to ensure that the first optical component slot 111 and the second optical component slot 110 cover the corresponding optical components, and that each support part makes good contact with the PCB board 340 or the optical component housing. The bonding between the fiber optic coil 100 and the PCB is achieved by external glue application. The through-hole 101 serves to complete the final sealing after the fiber optic coil 100 and the PCB board 340 are bonded and assembled, which can be accomplished by glue application or tape application. Next, deploy the first optical component fiber 311, leading it from the second surface to the first surface. Use the second positioning block 106 to guide it into the arc-shaped fiber optic coil channel 102, carefully coiling it once (or multiple times as needed) along the arc-shaped fiber optic coil channel 102 and the fiber optic coil structure 103, ensuring that the bending radius meets the requirements. Then, use the first positioning block 105 to lead the first optical component fiber 311 out of the channel. Subsequently, the second optical fiber 321 is laid out, exiting from the second optical fiber slot 110 and directly leading from the guide channel 107 to the second optical fiber adapter 322, following a non-coiled path to the second optical fiber adapter 322. After the fiber laying is completed, the limiter 200 is installed on the first surface of the fiber coiler 100, so that the limiter fixing hole 201 fits into the limiter fixing post 104, and the limiter limiting block 202 below it reliably restricts the first optical fiber 311 within the arc-shaped fiber coiler channel 102. Finally, additional sealing can be performed as needed.

[0039] The overall assembly process of the optical module is as follows: The optical engine 300, after the fiber optic cable structure installation and fiber optic cable deployment are completed, is placed into the predetermined position within the optical module base 400. At this time, the fourth support part 115 of the fiber optic cable holder 100 is in contact with the optical module base 400. A limiting washer 330 can be used to restrict the range of motion of the optical component adapter. Finally, the optical module cover 500 is closed and secured to the optical module base 400 with screws or other fasteners, completing the assembly of the entire optical module.

[0040] The beneficial effects of this embodiment are reflected in several aspects. First, through the arc-shaped fiber coiling channel 102 and the limiting structure on the fiber coiling frame 100, including the fiber coiling structure 103, positioning blocks, and limiters 200, the orderly coiling and reliable fixation of the longer first optical component fiber 311 is achieved, ensuring the bending radius, releasing stress, and significantly reducing the risk of fiber wear and breakage. At the same time, the second optical component fiber 321 is managed through the independent guide channel 107 and the third positioning block 108 and the fourth positioning block 109, avoiding cross-entanglement and mutual damage between fibers. The slot structure of the fiber coiling frame also provides effective physical protection for the optical component itself, improving the overall reliability and long-term stability of the optical module. Second, the fiber coiling frame 100 not only realizes the core fiber management function, but its structural design also allows it to simultaneously assume the protective and sealing functions of the independent optical component cover plate in the traditional optical module after fixation, achieved through cooperation with sealant. This multi-functional integrated design reduces the number of parts, optimizes the internal space layout of the optical module, and occupies less volume compared to the scheme of independently setting the fiber coiling structure and optical component cover plate. Finally, the positioning structure on the fiber tray 100 enables precise and reliable positioning of the optical engine, simplifying the installation process. The optical components are housed below their corresponding slots, reducing the risk of accidental contact with internal optical elements during fiber tray operations. The integrated design reduces the total number of components, shortens assembly time, reduces assembly complexity and potential cumulative tolerances, and improves production efficiency and product consistency.

[0041] Example 2 This embodiment is a variation of Embodiment 1, the main difference being that the first optical component fiber 311 to be coiled has a longer redundant length, requiring more than one turn, such as two or more turns, within the arc-shaped coiling channel 102 of the fiber coiling frame 100. Structurally, the basic structures of the fiber coiling frame 100 and the limiter 200 are the same as in Embodiment 1, but the depth and / or width of the arc-shaped coiling channel 102 may need to be appropriately increased to accommodate multiple turns of fiber. Simultaneously, the design of the limiter limiting block 202 of the limiter 200 may need to consider how to effectively limit multi-layered stacked fibers. Regarding assembly differences, when laying the first optical component fiber 311, after introducing it into the arc-shaped coiling channel 102, it needs to be carefully coiled around the coiling structure 103 to the required number of turns. During operation, care must be taken to keep the fiber flat and avoid excessive stress concentration at intersections or overlaps. After completing the multiple turns of coiling, the fiber is led out of the channel using the first positioning block 105. The subsequent installation process of the limiter 200 and the assembly of the optical engine and optical module are basically the same as in Embodiment 1. This embodiment inherits all the beneficial effects of embodiment 1. Its particular advantage lies in its ability to effectively manage and accommodate longer fiber redundancy by supporting multi-turn coiling. It adapts to scenarios with more complex internal optical path design of optical modules, greater physical distance between optical devices, or higher requirements for fiber stress release, thus providing greater flexibility for the design of optical modules.

[0042] Example 3 This embodiment provides another variation of the fiber optic coiling device, referring to... Figure 5 Compared to Embodiment 1, the main feature of this embodiment is the improvement in the structure of the fiber coiler 100, enabling it to coil not only the first optical component fiber 311 but also the second optical component fiber 321 as needed, and providing a more flexible coiling path selection for the first optical component fiber 311. The structural improvement is mainly reflected on the first surface of the fiber coiler 100. In addition to the original fiber coiling structure 103 and the arc-shaped fiber coiling channel 102, a second fiber coiling structure 117 and a third fiber coiling structure 118 are added. These newly added fiber coiling structures, together with the original structure, define an arc-shaped fiber coiling channel branch 116. This arc-shaped fiber coiling channel branch 116 may branch off from the arc-shaped fiber coiling channel 102, or partially overlap with or run parallel to it. Meanwhile, the exit area of ​​the guide channel 107, which was originally mainly used to directly guide the second optical component fiber 321 away, has been modified, for example, by widening or changing its path, so that the second optical component fiber 321 can also be easily guided to the first surface of the fiber tray 100 and connected to the newly added fiber tray area.

[0043] During fiber optic deployment, for the first optical component fiber 311, depending on its actual length and cabling requirements, it can now be coiled within the arc-shaped fiber coiling channel 102 or guided to the newly added arc-shaped fiber coiling channel branch 116 for coiling. For the second optical component fiber 321, if coiling is required, its path will differ from that in Embodiment 1. After the second optical component fiber 321 is led out from below the second optical component slot 110, it is guided to the first surface of the fiber coiling frame 100 via the modified guide channel 107 area. Then, it may be guided into the newly added fiber coiling area using structures such as positioning blocks, for example, through the outer wall of the positioning block, and then introduced into the arc-shaped fiber coiling channel branch 116 from beside the third fiber coiling structure 118. It is coiled within the arc-shaped fiber coiling channel branch 116, and may merge into the main arc-shaped fiber coiling channel of the arc-shaped fiber coiling channel 102, finally exiting from an outlet. The design of limiter 200 may need adjustment to ensure it can simultaneously cover and effectively limit the coiled optical fibers located in the arc-shaped fiber coiling channel 102 and the arc-shaped fiber coiling channel branch 116. This embodiment also inherits the basic advantages of embodiment 1, with its unique advantage being enhanced design versatility and adaptability. By providing selectable coiling paths and supporting the coiling of a second optical fiber, the same fiber coiling frame design can adapt to a wider range of optical module product requirements. Furthermore, when both optical paths face the risk of bare fiber stress, this embodiment can provide a coiled solution for both optical fibers, ensuring they both meet minimum bending radius requirements and receive sufficient stress relief, thereby elevating the overall reliability of the optical module to a higher level.

[0044] The fiber optic coiling device of this invention and its application in optical engines and optical modules are described in detail through three embodiments. These embodiments demonstrate how a carefully designed, multi-functional fiber coiling rack 100 and a matching limiter 200 can effectively manage the bare optical fiber inside an optical module, including coiling and guiding, reliable fixing, bending radius control, and stress relief. Simultaneously, this structure also serves multiple purposes, including protecting optical components, optimizing internal space, simplifying the assembly process, and assisting in sealing. Whether it's the basic single-fiber coiling scheme or the variant scheme supporting multi-turn or dual-fiber coiling, both demonstrate the innovation and practicality of this invention in solving the challenges of fiber optic deployment in high-speed miniaturized optical modules. It should be emphasized that this invention is not limited to the specific structural forms or specific optical module packaging types shown in the above embodiments. Those skilled in the art can make various modifications, combinations, or equivalent substitutions to these specific details according to actual application needs, without departing from the core ideas and scope defined by the claims of this invention. For example, the partition walls between the optical component slots can be opened or closed; the structure of the positioning blocks can be optimized or added or removed; the fiber optic channel can be designed with a more complex path; the shape and contact method of the support can be adjusted; and the fixing method can combine sealant with snap-fit, heat fusion, etc. Furthermore, the material selection and manufacturing process of the fiber optic coil holder and limiter can also be adjusted according to cost and performance requirements. All these improvements or modifications based on the spirit of this utility model should be included within the protection scope of this utility model.

Claims

1. A fiber optic coiling device, characterized in that, Includes a fiber optic coil (100) having opposing first and second surfaces, and the fiber optic coil (100) is provided with... At least one support portion is adapted to fit against the PCB board (340) or the optical module base (400) within the optical module; The first optical component slot (111) is disposed on the second surface of the fiber tray (100) and is suitable for accommodating or aligning the first optical component (310). The second optical component slot (110) is disposed on the second surface of the fiber tray (100) and is suitable for accommodating or aligning the second optical component (320). An arc-shaped fiber channel (102) is disposed on the first surface of the fiber tray (100); At least one fiber coil structure (103) is disposed within the arc-shaped fiber coil channel (102) and a plurality of positioning blocks are disposed on the outer peripheral surface of the fiber coil frame (100); Guide channels (107) are provided on the second surface of the fiber tray (100). as well as A limiter (200) is adapted to engage with the first surface of the fiber tray (100); in, The arc-shaped fiber channel (102), the fiber structure (103), the positioning block and the limiter (200) cooperate to form a first limiting structure. The first limiting structure is used to coil and limit the first optical component fiber (311) that is led out from the first optical component slot (111) on the second surface and reaches the first surface. The guide channel (107) and the auxiliary positioning block (109) cooperate to form a second limiting structure. The second limiting structure is used to guide and limit the second optical component fiber (321) led out from the second optical component slot (110) on the second surface. The second limiting structure guides the second optical component fiber (321) to be led out along a non-coiled path.

2. The fiber optic coiling device according to claim 1, characterized in that, The fiber tray (100) further includes at least one limiter fixing post (104), and the limiter (200) includes at least one limiter fixing hole (201). The limiter (200) is fixed to the first surface of the fiber tray (100) by cooperating with the limiter fixing post (104) through the limiter fixing hole (201).

3. The fiber optic coiling device according to claim 1, characterized in that, The bending radius of the arc-shaped fiber channel (102) disposed on the first surface is greater than the minimum bending radius of the optical fiber.

4. The fiber optic coiling device according to claim 1, characterized in that, The first optical component slot (111) and the second optical component slot (110) provided on the second surface are adapted to protect the corresponding first optical component (310) and second optical component (320) after the fiber optic tray (100) is installed.

5. The fiber optic coiling device according to claim 1, characterized in that, The support portion of the fiber optic tray (100) is fixed to the PCB board (340) and / or the optical module base (400) by sealant.

6. The fiber optic coiling device according to claim 1, characterized in that, The fiber tray (100) further includes a second fiber tray structure (117) or a third fiber tray structure (118) on the first surface, the second fiber tray structure (117) or the third fiber tray structure (118) defining an arc-shaped fiber tray channel branch (116); the guide channel (107) is adapted to guide the second optical component fiber (321) drawn from the second optical component slot (110) on the second surface to the first surface and enter the arc-shaped fiber tray channel branch (116) or the arc-shaped fiber tray channel (102) for coiling.

7. The fiber optic coiling device according to claim 1, characterized in that, The fiber tray (100) further includes a second fiber tray structure (117) and a third fiber tray structure (118) on the first surface, the second fiber tray structure (117) and the third fiber tray structure (118) defining an arc-shaped fiber tray channel branch (116); the guide channel (107) is adapted to guide the second optical component fiber (321) led out from the second optical component slot (110) on the second surface to the first surface and enter the arc-shaped fiber tray channel branch (116) or the arc-shaped fiber tray channel (102) for coiling.

8. A light engine (300), characterized in that, The device includes a PCB board (340); a first optical component (310) and a second optical component (320) arranged side by side on the PCB board (340), each having a first optical component fiber (311) and a second optical component fiber (321); and an optical fiber coiling device according to any one of claims 1 to 7, wherein the coiling frame (100) is arranged on the PCB board (340), and the first optical component slot (111) and the second optical component slot (110) on its second surface are respectively aligned with the first optical component (310) and the second optical component (320), and the first limiting structure on its first surface is used to limit the first optical component fiber (311), and the second limiting structure is used to limit the second optical component fiber (321).

9. The light engine (300) according to claim 8, characterized in that, The fiber optic tray (100) includes a first optical component slot (111) and a second optical component slot (110), which are aligned with and accommodate the first optical component (310) and the second optical component (320), respectively. The fiber optic tray (100) is fixed to the PCB board (340) and / or the optical module base (400) by sealant through its support portion, and provides sealed protection for the first optical component (310) and the second optical component (320).

10. An optical module, characterized in that, The device includes an optical module housing, the optical module housing comprising an optical module base (400) and an optical module cover (500); and an optical engine according to claim 8 or 9, the optical engine being disposed within the optical module housing.

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