An optical component and optical module based on a multi-fiber array

Abstract

This invention relates to an optical component and module based on a multi-fiber array, belonging to the field of optical communication technology. It includes a fiber array module and a coupling module adapted to the fiber array module. The fiber array module includes a fiber array and a constraint structure for fixing the fiber array. The fiber array includes at least two fibers arranged in a linear array. The coupling module is disposed at the output end of the fiber array module and is coupled to the output end of the fiber array module. The coupling module achieves optical path turning and convergence. This optical component not only reduces the polishing angle at the output end of the fiber array module, simplifying the processing technology, shortening processing time, and facilitating mass production, but also effectively improves the yield rate. Furthermore, it effectively improves coupling efficiency and reduces the risk of component damage during the coupling process. In addition, it improves the tolerance for fiber consistency between arrays, thereby reducing the investment in measurement equipment and manpower, and effectively reducing costs.

Description

Technical Field

[0001] This invention relates to the field of optical communication technology, and more specifically to an optical component and optical module based on a multi-fiber array. Background Technology

[0002] Optical modules are crucial components in optical communication technology, primarily used for converting between photoelectric signals and signals. Existing optical modules typically include a base, top cover, PCBA board (circuit board), fiber optic interface, receiver (RX), and / or transmitter (TX), with the receiver mainly responsible for optical-to-electric conversion and the transmitter mainly responsible for electro-optic conversion.

[0003] In the receiver section (RX) of existing optical modules, optical signals are typically transmitted by directly coupling the optical fiber output to the optical receiver chip (such as a photodetector (PD)). The specific implementation structure is shown in the attached figure. Figure 1 As shown, the receiving optical device typically uses a fiber optic array module. This module usually includes a pad, a pressure plate, and at least two optical fibers. Each fiber is arranged in an array and clamped between a first clamping part and a second clamping part to fix the fiber. The end of the fiber optic array module used to transmit optical signals is the output end, as shown in the attached diagram. Figure 1 As shown, the light-emitting end needs to be processed into an inclined surface (e.g., a total internal reflection inclined surface) to achieve a reversal of the optical path; the optical receiving chip is disposed on one side of the fiber array module and corresponds to the light-emitting end of the fiber array module, so that the light signal reflected by the total internal reflection inclined surface can be smoothly coupled into the optical receiving chip, as shown in the attached figure. Figure 1 As shown.

[0004] In existing technologies, to change the optical path, it is usually necessary to grind the fiber array module at a large angle (the grinding angle is usually greater than or equal to 41º), as shown in the attached figure. Figure 1 As shown, to meet the requirements of total internal reflection, this not only increases the risk of polishing and leads to a lower yield, but also increases the working time and costs. In addition, in existing fiber array modules, the light emitted from the fiber is usually divergent. The fiber is directly coupled to the optical receiver chip through the output end, which not only has low coupling efficiency, but also a short coupling distance. The coupling process is prone to damage to the fiber and the optical receiver chip, which urgently needs to be solved. Summary of the Invention

[0005] The first aspect of this invention is to solve the above-mentioned technical problems by providing an optical component based on a multi-fiber array, which can not only reduce the polishing angle of the fiber array module, effectively shorten the working time and improve the yield, but also effectively improve the coupling efficiency and reduce the risk of component damage during the coupling process.

[0006] An optical component based on a multi-fiber array includes a fiber array module and a coupling module adapted to the fiber array module. The fiber array module includes a fiber array and a constraint structure for fixing the fiber array. The fiber array includes at least two fibers arranged in a linear array. The coupling module is disposed at the light-emitting end of the fiber array module and corresponds to the end of the fiber. The coupling module is coupled to the light-emitting end of the fiber array module, and the optical path turning and converging are realized through the coupling module. In this scheme, by configuring fiber optic array modules with at least two fibers arranged in an array within the modules, multiple optical signals can be transmitted in parallel, improving the performance and efficiency of the optical communication system. By configuring constraint structures, precise control of each fiber is achieved, reducing coupling loss. Furthermore, by configuring coupling modules and placing them directly at the output end of the fiber optic array modules, directly opposite the fiber ends, the coupling modules are directly coupled to the output end of the fiber optic array modules. This allows the optical signals transmitted through the fibers to be directly input into the coupling modules, where the optical path is redirected and converged. This design eliminates the need for large-angle bends at the fiber ends, thus avoiding the need for large-angle grinding at the output end of the fiber optic array modules to meet total internal reflection requirements. This effectively reduces grinding risks and minimizes the size of the fiber optic array modules. The probability of damage during manufacturing, assembly, and use is reduced. Furthermore, the coupling module coupled to the output end of the fiber array module effectively protects the output end, further preventing damage during manufacturing, assembly, and use. This simplifies the manufacturing process, shortens processing time, facilitates mass production, and effectively improves yield. On the other hand, since fiber optic output is divergent and has low coupling efficiency, this solution configures a coupling module at the output end of the fiber array module. This coupling module enables optical path turning and convergence, achieving focusing and beam reduction, thus effectively improving coupling efficiency. It also increases the distance to the optical receiver chip, reducing the risk of component damage during the coupling process. In addition, it improves the tolerance for fiber consistency between arrays, reducing the need for measurement equipment and manpower, effectively lowering costs.

[0007] The second aspect of this invention addresses the problem of achieving optical path deflection and convergence using a coupling module. In some preferred embodiments, the coupling module includes an incident surface, a reflecting surface, and a lens array adapted to the output end. The lens array includes multiple convex lenses arranged in an array, with the incident surface corresponding to the reflecting surface and the reflecting surface corresponding to the lens array. The reflecting surface is used to achieve optical path deflection, and the convex lenses are used to achieve optical path convergence. The incident surface of the coupling module is coupled to the output end of the fiber array module. In this solution, by constructing an incident surface adapted to the output end, not only can the incident surface of the coupling module and the output end of the fiber array module achieve more stable and precise coupling, but the coupling module can also converge divergent light, effectively improving the coupling efficiency between the fiber array module and the optical receiver chip. Furthermore, it can effectively increase the distance between the fiber array module and the optical receiver chip, further reducing the risk of component damage during the coupling process. By aligning the incident surface with the reflecting surface and the reflecting surface with the lens array, the beams received by the incident surface are reflected by the reflecting surface, and each beam is output through the lens array to the coupling module for coupling into the optical receiver chip. This not only achieves the turning and converging functions of the optical path through the cooperation of the incident surface, reflecting surface, and lens array, but also eliminates the need for large-angle grinding of the output end of the fiber array module to meet the requirements of total internal reflection. This simplifies the processing technology, shortens processing time, and improves yield, while also effectively increasing the tolerance for fiber position and angle consistency, achieving tolerance compression. This reduces the investment in measurement equipment and manpower, thereby lowering costs.

[0008] Preferably, the number of convex lenses in the lens array is the same as the number of optical fibers in the optical fiber array module.

[0009] Preferably, the reflective surface is constructed as a total reflection surface or a reflective surface coating to achieve a better optical path deflection effect.

[0010] The third aspect of this invention addresses the problem of achieving optical path reversal and convergence using a coupling module. In some preferred embodiments, the coupling module includes a mirror body adapted to the fiber array module and a reflective concave mirror array constructed on the mirror body. The reflective concave mirror array includes multiple reflective concave mirrors arranged in an array, with each reflective concave mirror corresponding to the light-emitting end. The reflective concave mirrors are used to achieve optical path reversal and convergence. In this solution, a reflective concave mirror is used to achieve the turning and converging functions of the optical path. This not only converges the diverging light, effectively improving the coupling efficiency between the fiber array module and the optical receiver chip, but also effectively increases the distance between the fiber array module and the optical receiver chip, further reducing the risk of component damage during the coupling process. Furthermore, it eliminates the need for large-angle grinding of the output end of the fiber array module to meet the requirements of total internal reflection. This simplifies the processing technology, shortens the processing time, and improves the yield rate. It also effectively increases the tolerance for fiber position and angle consistency, thereby reducing the investment in measurement equipment and manpower, and lowering costs. Compared with the coupling module using a lens array, the use of a reflective concave mirror array can also effectively reduce coupling loss and effectively improve coupling efficiency.

[0011] Preferably, one side of the mirror body has a notch, and the bottom surface of the notch has a plane arranged along the width direction of the mirror body, the plane being inclined to the vertical direction. The reflective concave mirror array is constructed within the plane. One end of the mirror body is connected to the light-emitting end of the fiber optic array module, and the light-emitting end corresponds to the reflective concave mirror array through the notch. In this solution, by constructing a notch on one side of the mirror body and connecting one end of the mirror body to the light-emitting end of the fiber optic array module, not only can the coupling module and the light-emitting end of the fiber optic array module achieve more stable and precise coupling, which is beneficial to improving coupling efficiency, but the mirror body can also cover the light-emitting end of the fiber optic array module to effectively isolate and protect the light-emitting end of the fiber optic array module.

[0012] Preferably, the number of concave mirrors in the concave mirror array is the same as the number of optical fibers in the optical fiber array module.

[0013] Preferably, the reflective concave mirror is provided with a reflective film. This allows for better total internal reflection, resulting in better optical path deflection and thus effectively reducing coupling loss and further improving coupling efficiency.

[0014] The fourth aspect of this invention addresses the problem of preventing damage to fiber optic array modules. Further, the light-emitting end of the fiber optic array module is constructed as an inclined plane relative to the vertical direction, with the angle of inclination between the light-emitting end and the vertical direction being 2-30 degrees. By constructing the incident surface of the coupling module as an inclined plane relative to the vertical direction, it is beneficial to obtain higher return loss. By controlling the inclination angle of the light-emitting end to 2-30 degrees, the fiber optic array module only needs to be ground at a smaller angle. This not only effectively reduces the probability of damage during the manufacturing process, assembly, and use of the fiber optic array module, but also simplifies the processing technology, shortens processing time, facilitates large-scale production, and effectively improves the yield rate.

[0015] Preferably, the emitting end of the fiber array module is tilted at an angle of 4 to 8 degrees relative to the vertical direction. This smaller tilt angle of the emitting end further reduces the grinding angle, shortens the processing time, and improves the yield.

[0016] Preferably, the optical output end of the fiber array module is tilted at an angle of 4 degrees, 6 degrees, or 8 degrees relative to the vertical direction.

[0017] Furthermore, the incident surface of the coupling module is constructed as an inclined plane relative to the vertical direction, and the angle of inclination of the incident surface relative to the vertical direction is 2 to 30 degrees. In this scheme, by constructing the incident surface of the coupling module as an inclined plane relative to the vertical direction to accommodate the inclined light-emitting end, not only can a better coupling effect be achieved through the cooperation of the inclined planes, but the return loss can also be further improved through the cooperation of the inclined planes.

[0018] Preferably, the incident surface of the coupling module is tilted at an angle of 4 to 8 degrees relative to the vertical direction. This is to better adapt to the output end of the fiber array module and to improve coupling efficiency.

[0019] Preferably, the angle of inclination of the incident surface of the coupling module relative to the vertical direction is 4 degrees, 6 degrees, or 8 degrees.

[0020] Preferably, the tilt angle of the incident surface in the coupling module matches the tilt angle of the output end in the fiber array module. This facilitates better coupling between the output end and the incident surface and helps achieve higher return loss.

[0021] Preferably, the incident surface of the coupling module is bonded to the output end of the fiber array module using adhesive. This not only fixes the coupling module to the fiber array module and integrates them into one unit, but also enables a more stable coupling between the output end of the fiber array module and the incident surface of the coupling module.

[0022] In some preferred embodiments, the coupling module includes a prism adapted to the fiber array module and a lens adapted to the prism. The incident surface is constructed on one side of the prism, and the reflecting surface is constructed on the other side of the prism. The lens includes a mirror body and a lens array. The lens array is disposed on one side of the mirror body, and the mirror body is connected to one side of the prism, such that the reflecting surface corresponds to the lens array. The incident surface of the prism is coupled to the light-emitting end of the fiber array module. In this solution, the coupling module adopts a combination structure of prism and lens, which allows the light beam reflected from the reflecting surface to be output to the coupling module through the lens array. On the one hand, the prism can realize the optical path turning function, so that the fiber array module only needs to be ground at a smaller angle. This can not only effectively reduce the probability of damage during the manufacturing, assembly and use of the fiber array module, but also simplify the processing technology, shorten the processing time, make it easier to mass-produce, and effectively improve the yield. On the other hand, the lens can realize the focusing and beam-shrinking functions, which can not only improve the coupling efficiency, but also increase the distance to the optical receiving chip, reducing the risk of component damage during the coupling process. It can also increase the tolerance of fiber position and angle consistency, realize the tolerance compression function, thereby reducing the input of measurement equipment and manpower, and reducing costs.

[0023] In some preferred embodiments, the coupling module includes a mirror body adapted to the fiber array module. The incident surface is constructed on one side of the mirror body, the reflecting surface is constructed on the other side of the mirror body, and the lens array is disposed on one side of the mirror body. The incident surface of the mirror body is coupled to the light-emitting end of the fiber array module. In this embodiment, the coupling module adopts a one-piece molded mirror body structure. This one-piece molded mirror body structure realizes the functions of optical path turning and converging. It can not only realize the functions that the combination structure of prism and lens can achieve, but also, compared with the combination structure of prism and lens, the structure of this embodiment is simpler, the process and assembly are simpler, which is conducive to further shortening the production time and improving the yield.

[0024] Preferably, the fiber array module comprises 4, 8, 12, 16, or 32 optical fibers.

[0025] Preferably, the constraint structure includes a pad and a pressure plate adapted to the pad. The pad has at least two grooves for accommodating optical fibers, with each optical fiber disposed in a groove. The pressure plate is fixed to the pad and clamps the rear end of the optical fiber between the pressure plate and the pad. The light-emitting end includes the rear end face of the pad, the rear end face of the pressure plate, and the rear end face of the optical fiber. In this solution, the grooves provide precise positioning and support for the optical fiber, ensuring a stable position within the grooves and improving optical coupling efficiency. This also helps to better protect and secure the optical fiber. Furthermore, by using the rear end face of the pad, the rear end face of the pressure plate, and the rear end face of the optical fiber to jointly form the light-emitting end of the constraint structure, it is more conducive to achieving better coupling with the coupling module.

[0026] Preferably, the rear end faces of the pad, the pressure plate, and the optical fiber are flush. This not only facilitates processing and shaping but also makes the manufacturing process and assembly easier, and helps improve coupling efficiency.

[0027] Preferably, the groove is a V-shaped groove.

[0028] Preferably, the groove is filled with adhesive. This allows the adhesive to fill the gaps within the groove, facilitating a more secure fixation of the optical fiber.

[0029] Furthermore, it also includes connectors, with optical fibers connected to the connectors respectively, and the connectors are used to connect external optical fibers.

[0030] An optical module, including the aforementioned optical components, not only effectively reduces the probability of damage to the fiber optic array module during manufacturing and assembly, but also increases the distance to the optical receiving chip, improves coupling efficiency, and is easy to mass-produce.

[0031] Furthermore, it also includes a housing with an assembly space within which the optical components are disposed. This allows the housing to effectively protect the internal optical components, improving the stability and reliability of the optical module.

[0032] Furthermore, it also includes a substrate and a light-receiving chip disposed within the housing. The constraint structure and / or fiber array module in the optical assembly are fixed to the substrate. The light-receiving chip corresponds to the coupling module and is used to receive the optical signal output by the coupling module. In this solution, the substrate is used to support and fix the optical assembly. By placing the light-receiving chip below the coupling module and corresponding to the lens array or reflective concave mirror array in the coupling module, coupling between the optical assembly and the light-receiving chip is achieved.

[0033] Compared with existing technologies, the optical component and optical module based on multi-fiber array provided by this invention can not only reduce the polishing angle of the output end of the fiber array module, simplify the processing technology, shorten the processing time, make it easier to mass-produce, and effectively improve the yield; it can also effectively improve the coupling efficiency and reduce the risk of component damage during the coupling process; in addition, it can ensure the consistency of the fibers between arrays, thereby reducing the input of measurement equipment and manpower, and effectively reducing costs. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of a partial structure in the prior art where a fiber optic array module is coupled with an optical receiver chip.

[0036] Figure 2 This is a schematic diagram of the structure of a pad provided in Embodiment 1 of the present invention.

[0037] Figure 3 This is a cross-sectional view of an optical fiber array module provided in Embodiment 1 of the present invention.

[0038] Figure 4 This is a partial structural schematic diagram of an optical fiber array module provided in Embodiment 1 of the present invention.

[0039] Figure 5 This is a schematic diagram of the structure of an optical component provided in Embodiment 1 of the present invention.

[0040] Figure 6 This is a front view of a coupling module provided in Embodiment 1 of the present invention.

[0041] Figure 7 for Figure 6 Top view.

[0042] Figure 8 for Figure 6 A bottom view.

[0043] Figure 9 This is a top view of an optical component provided in Embodiment 1 of the present invention.

[0044] Figure 10 This is a bottom view of an optical component provided in Embodiment 1 of the present invention.

[0045] Figure 11 This is a front view of another coupling module provided in Embodiment 1 of the present invention.

[0046] Figure 12 for Figure 11 Top view.

[0047] Figure 13 for Figure 11 A bottom view.

[0048] Figure 14 This is a partial structural diagram of the coupling module in an optical component provided in Embodiment 1 of the present invention.

[0049] Figure 15 This is a three-dimensional structural schematic diagram of a coupling module provided in Embodiment 2 of the present invention.

[0050] Figure 16 for Figure 15The left view.

[0051] Figure 17 for Figure 16 The left view.

[0052] Figure 18 for Figure 15 Front view of the machined surface.

[0053] Figure 19 This is a partial structural diagram of the coupling module in an optical component provided in Embodiment 2 of the present invention.

[0054] Figure 20 This is a partial structural diagram of the coupling between the optical components and the optical receiving chip in an optical module provided in Embodiment 3 of the present invention.

[0055] The markings in the diagram are as follows: Connector 1; Fiber optic array module 2, Fiber 21, Constraint structure 22, Pad 23, Groove 231, Pressure plate 24, Light emitting end 25; Coupling module 3, Incident surface 31, Reflecting surface 32, Lens array 33, Convex lens 34, Reflective concave mirror array 35, Reflective concave mirror 36; Prism 61, Lens 62, Mirror body 63, Notch 631, Bottom surface 632, Processed surface 633, Extension 634, Lower surface 635, End face 636; Adhesive 7; Optical receiving chip 81, Substrate 82. Detailed Implementation

[0056] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0057] Example 1

[0058] This embodiment provides an optical component based on a multi-fiber array, including a fiber array module 2 and a coupling module 3 adapted to the fiber array module 2, such as... Figure 8 and Figure 10As shown, the fiber optic array module 2 includes a fiber optic array and a constraint structure 22 for fixing the fiber optic array. The fiber optic array includes at least two optical fibers 21 arranged in a linear array. In implementation, the number of optical fibers in the fiber optic array can be determined according to actual needs. In implementation, the fiber optic array can preferably include 4, 8, 12, 16, or 32 optical fibers, etc. As an example, such as... Figure 9 and Figure 10 As shown, in this embodiment, the fiber array includes four optical fibers 21 arranged at linear array intervals, and each optical fiber 21 can be used to transmit optical signals of different wavelengths.

[0059] like Figure 5 , Figure 9 and Figure 10 As shown, in this embodiment, the coupling module 3 is disposed at the light-emitting end 25 of the fiber array module 2 and faces the end (rear end) of the fiber. The coupling module 3 is coupled to the light-emitting end 25 of the fiber array module 2 so as to receive optical signals of various wavelengths using the coupling module 3, and realize the turning and convergence of the optical path through the coupling module 3, so that the optical signals of various wavelengths can be better coupled to the optical receiving chip 81, so as to realize the mutual conversion between optical signals and electrical signals.

[0060] In this embodiment, the fiber optic array module 2 can be an existing multi-channel fiber optic array module 2. For example, in this embodiment, the constraint structure 22 includes a pad 23 and a pressure plate 24 that adapts to the pad 23. Figures 2-4 As shown; for ease of description, in this embodiment, along the direction of optical signal transmission, the two ends of the optical fiber 21 are the front end and the rear end, respectively (the optical signal is transmitted in the direction from the front end to the rear end). Similarly, the two ends of the pad 23 are the front end and the rear end, respectively (the optical signal is transmitted in the direction from the front end to the rear end), and the two ends of the pressure plate 24 are the front end and the rear end, respectively (the optical signal is transmitted in the direction from the front end to the rear end). In implementation, the pad 23 is constructed with at least two grooves 231 for accommodating the optical fiber 21, such as... Figure 2 As shown, the grooves 231 are arranged at array intervals; during assembly, the front end (e.g., the front end) of each optical fiber 21 is left outside the groove 231, and the other end (e.g., the rear end) of each optical fiber 21 is respectively set in the groove 231, as shown. Figure 3 and Figure 4 As shown, the groove 231 is used to position and limit the position of each optical fiber 21. The groove 231 provides precise positioning and support for the optical fiber 21, which not only keeps the optical fiber 21 in a stable position within the groove 231, making the position of the optical fiber 21 more accurate and conducive to achieving better optical coupling efficiency, but also helps to better protect and fix the optical fiber 21.

[0061] During implementation, the groove 231 can be filled with adhesive 7, such as... Figure 3As shown, glue 7 is used to fill the gap in the groove 231, which facilitates a more secure fixation of the optical fiber 21. During assembly, the pressure plate 24 can be fixed to the pad 23 by screws, clips, or glue, and the rear end of the optical fiber 21 is clamped between the pressure plate 24 and the pad 23, as shown. Figure 3 and Figure 4 As shown, this achieves better protection and fixation of the optical fiber 21. Finally, the pad 23, the pressure plate 24, and the rear end of the optical fiber 21 are polished and ground to form a light-emitting end 25 for light emission, as shown. Figure 3 As shown; during implementation, the rear end face of the pad 23, the rear end face of the pressure plate 24, and the rear end face of the optical fiber 21 are flush, as shown. Figure 3 and Figure 4 As shown, it is not only easier to process and shape, but also easier to process and assemble, and it is beneficial to improve coupling efficiency.

[0062] In implementation, the shape of the groove 231 can be determined according to actual needs. In this embodiment, the groove 231 is a V-shaped groove, such as... Figures 2-4 As shown, this design facilitates both processing and shaping, and allows for more precise positioning and constraint of the optical fiber 21. It is understood that during implementation, the portion of the optical fiber clamped between the pad 23 and the pressure plate 24 has had its protective structure, such as the plastic coating layer, removed. The clamped portion retains only the fiber core and the coating layer covering it. The portion of the optical fiber outside the groove 231, however, has not had its protective structure removed; this will not be elaborated further here.

[0063] Of course, in implementation, constraint structure 22 can also adopt other existing structures, which will not be listed here.

[0064] In implementation, the coupling module 3 includes an incident surface 31 adapted to the light output end 25, a reflecting surface 32, and a lens array 33. The incident surface 31 is used to receive optical signals of various wavelengths. During assembly, such as... Figure 4 As shown, the incident surface 31 of the coupling module 3 couples the output end 25 of the fiber array module 2, thereby achieving coupling between the fiber array module 2 and the coupling module 3; Figure 5 As shown, the incident surface 31 corresponds to the reflecting surface 32, and the reflecting surface 32 corresponds to the lens array 33. The reflecting surface 32 is used to reflect the light beams received by the incident surface 31 and output the light beams through the lens array 33 to the coupling module 3 so as to couple them into the optical receiving chip 81. Not only can the turning and converging functions of the optical path be realized through the cooperation of the incident surface 31, the reflecting surface 32 and the lens array 33, but it is also not necessary to grind the light output end 25 of the fiber array module 2 at a large angle to meet the requirements of total internal reflection. This can simplify the processing technology, shorten the processing time, improve the yield, and effectively increase the tolerance of fiber position and angle consistency, thereby reducing the input of measurement equipment and manpower and achieving the purpose of reducing costs.

[0065] In implementation, the coupling module 3 has various embodiments. For example, in one embodiment, the coupling module 3 includes a prism 61 adapted to the fiber array module 2 and a lens 62 adapted to the prism 61. One side of the prism 61 is constructed with an incident surface 31 adapted to the light-emitting end 25 in the fiber array module 2, and the other side of the prism 61 is constructed with a reflecting surface 32, which corresponds to the incident surface 31. Figures 6-8 As shown. Meanwhile, lens 62 includes a mirror body 63 and the lens array 33. The lens array 33 is disposed on one side of the mirror body 63 and includes a plurality of convex lenses 34 arranged in an array, such as... Figures 6-8 As shown, in implementation, the number of convex lenses 34 is the same as the number of optical fibers in the fiber array module 2. Therefore, the number of convex lenses 34 in the lens array 33 can be 4, 8, 12, 16, or 32, etc. Of course, in other embodiments, the number of convex lenses 34 can also be greater than the number of optical fibers in the fiber array module 2. During assembly, the incident surface 31 of the prism 61 is coupled to the light-emitting end 25 of the fiber array module 2, such as... Figure 5 and Figure 6 As shown, the mirror body 63 is connected to one side of the prism 61. For example, the mirror body 63 can be preferentially connected to the prism 61 by adhesive 7, so that the reflecting surface 32 corresponds to the lens array 33. This allows the light beam reflected from the reflecting surface 32 to be output to the coupling module 3 via the lens array 33. In this embodiment, the coupling module 3 adopts a combination structure of prism 61 and convex lens 34, which can not only realize the function of light path deflection but also the function of light path convergence. In this embodiment, the convex lens 34 can preferably be a spherical lens, and the mirror body 63 and the lens array 33 can be integrally formed components, so that the entire convex lens 34 can be an integrally formed component.

[0066] For example, in another embodiment, the coupling module 3 includes a mirror body 63 adapted to the fiber array module 2. One side of the mirror body 63 has an incident surface 31 adapted to the light-emitting end 25 in the fiber array module 2, while the other side of the mirror body 63 has a reflecting surface 32 corresponding to the incident surface 31. Figures 11-13 As shown, the lens array 33 corresponds to the reflecting surface 32; similarly, in implementation, the lens array 33 includes multiple convex lenses 34 arranged in an array. The number of convex lenses 34 is the same as the number of optical fibers 21 in the optical fiber array module 2. Therefore, the number of convex lenses 34 in the lens array 33 can be 4, 8, 12, 16, or 32, etc.; during assembly, the incident surface 31 of the mirror body 63 is coupled to the light-emitting end 25 of the optical fiber array module 2, such as... Figure 14As shown, this allows the light beam reflected from the reflecting surface 32 to be output to the coupling module 3 via the lens array 33, achieving not only the deflection function of the optical path but also the convergence function. In this embodiment, the convex lens 34 can preferably be a spherical lens, and the mirror body 63 and the lens array 33 are integrally formed components, such as... Figures 11-14 As shown, the entire mirror body 63 is a one-piece molded component. In other words, in this embodiment, the coupling module 3 adopts a one-piece molded mirror body 63 structure. The one-piece molded mirror body 63 structure realizes the function of optical path turning and converging. It can not only realize the function that the combination structure of prism 61 and lens 62 can achieve, but also, compared with the combination structure of prism 61 and lens 62, the structure of this solution is simpler, the process and assembly are simpler, which is conducive to further shortening the working time and improving the yield.

[0067] To better achieve the optical path reversal function, in a more complete implementation, the reflective surface 32 of the coupling module 3 can be constructed as a total reflection surface 32 or a film can be coated on the reflective surface 32 to achieve a better optical path reversal effect.

[0068] In implementation, the light-emitting end 25 of the fiber optic array module 2 can be configured to be perpendicular to the horizontal direction. However, in the preferred embodiment provided in this example, the light-emitting end 25 of the fiber optic array module 2 is preferably configured as an inclined surface tilted in the vertical direction, such as... Figures 3-5As shown, the incident surface 31 of the coupling module 3 is also constructed as an inclined surface tilted in the vertical direction. In implementation, the tilt angle between the light-emitting end 25 and the incident surface 31 can be determined according to actual needs. Preferably, the tilt angle θ of the light-emitting end 25 in the fiber array module 2 relative to the vertical direction is controlled to be 2~30 degrees. This allows the fiber array module 2 to be ground at a smaller angle, which can not only effectively reduce the probability of damage during the manufacturing, assembly, and use of the fiber array module 2, but also simplify the processing technology, shorten the processing time, facilitate large-scale production, and effectively improve the yield. Accordingly, the tilt angle of the incident surface 31 in the coupling module 3 matches the tilt angle of the light-emitting end 25 in the fiber array module 2, which is conducive to achieving a better coupling effect between the light-emitting end 25 and the incident surface 31, and is conducive to obtaining higher return loss. Therefore, in implementation, the tilt angle of the incident surface 31 in the coupling module 3 relative to the vertical direction is preferably controlled to be 2~30 degrees, so as to better adapt to the tilted light-emitting end 25. This not only achieves better coupling effect through the cooperation of the inclined surfaces, but also further improves the return loss. More preferably, the tilt angle of the light-emitting end 25 in the fiber array module 2 relative to the vertical direction is 4~8 degrees, making the tilt angle of the light-emitting end 25 smaller, which can further reduce the polishing angle, shorten the working time, and improve the yield. Correspondingly, the tilt angle of the incident surface 31 in the coupling module 3 relative to the vertical direction is 4~8 degrees, which is conducive to achieving better results. As an example, in this embodiment, the tilt direction of the light-emitting end 25 is opposite to the transmission direction of the optical signal, such as... Figures 3-5 As shown, the angle θ between the light-emitting end 25 and the vertical direction is 8 degrees. Of course, in practice, the angle between the light-emitting end 25 and the vertical direction can also be preferably 4 degrees, 5 degrees, 6 degrees, or 7 degrees, etc. Similarly, the angle between the incident surface 31 and the vertical direction can be preferably controlled to 4 degrees, 5 degrees, 6 degrees, 7 degrees, or 8 degrees, etc., which will not be listed here.

[0069] In implementation, the incident surface 31 of the coupling module 3 can be connected to the light-emitting end 25 of the fiber array module 2 via adhesive 7. This not only fixes the coupling module 3 to the fiber array module 2 and integrates the coupling module 3 with the fiber array module 2, but also enables more stable coupling between the light-emitting end 25 of the fiber array module 2 and the incident surface 31 of the coupling module 3. In addition, the coupling module 3 can effectively protect the light-emitting end 25 of the fiber array module 2 and converge the diverging light, which can not only achieve focusing and beam reduction, thereby effectively improving coupling efficiency, but also increase the distance to the optical receiving chip 81, thus helping to reduce the risk of component damage during the coupling process. Furthermore, it can ensure the consistency of the optical fibers 21 between the arrays, thereby reducing the investment in measurement equipment and manpower, and effectively reducing costs.

[0070] In a more refined embodiment, this optical component also includes a connector 1, such as... Figure 9 and Figure 10 As shown, connector 1 is mainly used to connect external optical fibers. In implementation, connector 1 can be an existing LC socket or LC connector 1, etc. In implementation, the end of optical fiber 21 facing away from constraint structure 22 (e.g., the front end) is connected to connector 1.

[0071] Example 2

[0072] To address the issue of achieving optical path reversal and convergence functions using the coupling module 3, the main difference between this embodiment 2 and the aforementioned embodiment 1 lies in the structure of the coupling module 3 in the multi-fiber array-based optical component provided in this embodiment. Specifically, in this embodiment, the coupling module 3 includes a mirror body 63 adapted to the fiber array module 2 and a reflective concave mirror array 35 constructed on the mirror body 63, such as... Figures 15-18 As shown, the reflective concave mirror array 35 includes multiple reflective concave mirrors 36 arranged in an array. The light-emitting end 25 corresponds to each reflective concave mirror 36. In implementation, the number of reflective concave mirrors 36 in the reflective concave mirror array 35 is the same as the number of optical fibers 21 in the optical fiber array module 2, and each optical fiber 21 in the optical fiber array module 2 corresponds to each reflective concave mirror 36. The reflective concave mirrors 36 are used to achieve optical path turning and convergence, such as... Figure 19 As shown. In this embodiment, a reflective concave mirror 36 is used to achieve the turning and converging functions of the optical path. This not only converges the diverging light, effectively improving the coupling efficiency between the fiber array module 2 and the optical receiver chip 81, but also effectively increases the distance between the fiber array module 2 and the optical receiver chip 81, further reducing the risk of component damage during the coupling process. Furthermore, it eliminates the need for large-angle grinding of the light-emitting end 25 of the fiber array module 2 to meet the requirements of total internal reflection. This simplifies the processing technology, shortens the processing time, and improves the yield rate. It also effectively increases the tolerance for the position and angle consistency of the fiber 21, thereby reducing the investment in measurement equipment and manpower, and lowering costs. Compared to the coupling module 3 using a lens array 33 in the embodiment, the use of a reflective concave mirror array 35 can also effectively reduce coupling loss and further improve coupling efficiency.

[0073] As an example, in this embodiment, such as Figures 15-18 As shown, one side of the mirror body 63 has a notch 631, and the bottom surface 632 of the notch 631 has a machined surface 633 arranged along the width direction of the mirror body 63. The machined surface 633 is a plane, as shown in the figure. Figure 16 and Figure 18As shown, during implementation, the processing surface 633 is inclined in the vertical direction, and the reflective concave mirror array 35 is constructed within the processing surface 633. During assembly, one end of the mirror body 63 is aligned with the light-emitting end 25 of the fiber array module 2, and the light-emitting end 25 corresponds to the reflective concave mirror array 35 through the notch 631. This not only enables the coupling module 3 and the light-emitting end 25 of the fiber array module 2 to achieve more stable and precise coupling, which is beneficial to improving coupling efficiency, but also allows the mirror body 63 to cover the light-emitting end 25 of the fiber array module 2, so as to effectively isolate and protect the light-emitting end 25 of the fiber array module 2.

[0074] In practical implementation, one end of the mirror body 63 can be connected to the light-emitting end 25 of the fiber array module 2 using adhesive 7. It is understood that, in implementation, the outer contour of other parts of the mirror body 63 can be determined according to actual needs. For example, such as... Figures 15-18 As shown, one end of the mirror body 63 is also provided with an extension 634. The extension 634 is constructed on the upper side of the notch 631. The lower surface 635 of the extension 634 is connected to the bottom surface 632 of the notch 631. In practice, the lower surface 635 of the extension 634 is preferably constructed as a plane, such as... Figure 16 As shown, to avoid blocking the optical signal; during assembly, the end face 636 of the extension 634 can be aligned with the light-emitting end 25 of the fiber array module 2, as shown. Figure 19 As shown, adhesive can be provided between the end face 636 of the extension 634 and the light-emitting end 25 to achieve a stable connection between the mirror body 63 and the fiber array module 2. In implementation, the end face 636 of the extension 634 can be configured to be perpendicular to the horizontal direction or inclined to the vertical direction to better fit the light-emitting end 25 of the fiber array module 2.

[0075] In a more refined embodiment, the reflective concave mirror 36 is provided with a reflective film to achieve better total internal reflection, thereby achieving better optical path reversal effect, effectively reducing coupling loss and further improving coupling efficiency.

[0076] Example 3

[0077] This embodiment provides an optical module, including the optical components described in Embodiment 1 or Embodiment 2, and a housing. The housing has an assembly space, and the optical components are disposed within the assembly space. In implementation, the housing may include a base and a top plate, with the top plate detachably disposed on the base, forming the assembly space between the top plate and the base.

[0078] In a more refined embodiment, the optical module further includes a substrate 82 disposed within the housing, such as... Figure 20As shown, substrate 82 can preferably be made of glass plate or glass block, and the fiber array module 2 in the optical assembly can be fixed to substrate 82. For example, the pad 23 in fiber array module 2 is disposed on substrate 82, such as... Figure 20 As shown. This optical module also includes a light receiving chip 81 disposed within the housing. The light receiving chip 81 is located below the coupling module 3 and corresponds to the lens array 33 or the reflective concave mirror array 35 in the coupling module 3, as shown. Figure 19 or Figure 20 As shown.

[0079] In a more refined embodiment, the housing is also provided with an opening for assembling connector 1, which is disposed at the opening to connect an external optical fiber through the opening.

[0080] In practical use, multiple wavelength optical signals are input into the fiber array in the fiber array module 2 via connector 1, and input into the coupling module 3 via the output end 25 of the fiber array module 2. The coupling module 3 receives the optical signals of each wavelength and realizes the turning and convergence of the optical path, so that the optical signals of each wavelength are emitted from the coupling module 3 via each convex lens 34 or reflective concave mirror 36 and coupled to the optical receiving chip 81, realizing the mutual conversion between optical signals and electrical signals.

[0081] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An optical component based on a multi-fiber array, characterized in that, The system includes a fiber array module and a coupling module adapted to the fiber array module. The fiber array module includes a fiber array and a constraint structure for fixing the fiber array. The fiber array includes at least two fibers arranged in a linear array. The coupling module is located at the light output end of the fiber array module and corresponds to the end of the fiber. The coupling module is coupled to the light output end of the fiber array module, and the optical path turning and convergence are realized through the coupling module.

2. The optical component based on a multi-fiber array according to claim 1, characterized in that, The coupling module includes an incident surface, a reflecting surface, and a lens array adapted to the light output end. The lens array includes multiple convex lenses arranged in an array, with the incident surface corresponding to the reflecting surface and the reflecting surface corresponding to the lens array. The reflecting surface is used to achieve the deflection of the optical path, and the convex lenses are used to achieve the convergence of the optical path. The incident surface of the coupling module is coupled to the light output end of the fiber array module.

3. The optical component based on a multi-fiber array according to claim 2, characterized in that, The number of convex lenses in the lens array is the same as the number of optical fibers in the optical fiber array module; the reflective surface is constructed as a total reflection surface or a reflective surface with a coating.

4. The optical component based on a multi-fiber array according to claim 2, characterized in that, The coupling module includes a prism adapted to the fiber array module and a lens adapted to the prism. The incident surface is constructed on one side of the prism, and the reflecting surface is constructed on the other side of the prism. The lens includes a mirror body and a lens array. The lens array is disposed on one side of the mirror body, and the mirror body is connected to one side of the prism, such that the reflecting surface corresponds to the lens array. The incident surface of the prism is coupled to the light-emitting end of the fiber array module.

5. The optical component based on a multi-fiber array according to claim 2, characterized in that, The coupling module includes a mirror body adapted to the fiber array module, the incident surface is constructed on one side of the mirror body, the reflecting surface is constructed on the other side of the mirror body, and the lens array is disposed on one side of the mirror body; the incident surface of the mirror body is coupled to the light output end of the fiber array module.

6. The optical component based on a multi-fiber array according to claim 1, characterized in that, The coupling module includes a mirror body adapted to the fiber array module and a reflective concave mirror array constructed on the mirror body. The reflective concave mirror array includes multiple reflective concave mirrors arranged in an array, with each reflective concave mirror corresponding to the light-emitting end. The reflective concave mirrors are used to realize the turning and convergence of the optical path.

7. The optical component based on a multi-fiber array according to claim 6, characterized in that, One side of the mirror body has a notch, and the bottom surface of the notch has a plane arranged along the width direction of the mirror body. The plane is inclined to the vertical direction, and the reflective concave mirror array is constructed in the plane. One end of the mirror body is connected to the light output end of the fiber array module, and the light output end corresponds to the reflective concave mirror array through the notch.

8. The optical component based on a multi-fiber array according to claim 6, characterized in that, The number of concave mirrors in the concave mirror array is the same as the number of optical fibers in the optical fiber array module; the concave mirrors are provided with a reflective film.

9. The optical component based on a multi-fiber array according to any one of claims 2-8, characterized in that, The light-emitting end of the fiber array module is constructed as an inclined plane in the vertical direction, and the angle of inclination of the light-emitting end of the fiber array module relative to the vertical direction is 2 to 30 degrees.

10. The optical component based on a multi-fiber array according to claim 9, characterized in that, The optical output end of the fiber array module is tilted at an angle of 4 to 8 degrees relative to the vertical direction.

11. The optical component based on a multi-fiber array according to claim 10, characterized in that, The optical output end of the fiber array module is tilted at an angle of 4 degrees, 6 degrees, or 8 degrees relative to the vertical direction.

12. The optical component based on a multi-fiber array according to any one of claims 2-5, characterized in that, The incident surface of the coupling module is constructed as an inclined plane in the vertical direction, and the angle of inclination of the incident surface of the coupling module relative to the vertical direction is 2 to 30 degrees.

13. The optical component based on a multi-fiber array according to claim 12, characterized in that, The incident surface of the coupling module is tilted at an angle of 4 to 8 degrees relative to the vertical direction.

14. The optical component based on a multi-fiber array according to claim 12, characterized in that, The angle of inclination of the incident surface of the coupling module relative to the vertical direction is 4 degrees, 6 degrees, or 8 degrees. The tilt angle of the incident surface in the coupling module matches the tilt angle of the output end in the fiber array module.

15. The optical component based on a multi-fiber array according to claim 1, characterized in that, The constraint structure includes a pad and a pressure plate adapted to the pad. The pad has at least two grooves for accommodating optical fibers, and each optical fiber is respectively disposed in the groove. The pressure plate is fixed to the pad and clamps the rear end of the optical fiber between the pressure plate and the pad. The light-emitting end includes the rear end face of the pad, the rear end face of the pressure plate, and the rear end face of the optical fiber.

16. The optical component based on a multi-fiber array according to claim 15, characterized in that, The rear end face of the pad, the rear end face of the pressure plate, and the rear end face of the optical fiber are flush.

17. The optical component based on a multi-fiber array according to claim 15, characterized in that, The groove is a V-shaped groove; the groove is filled with adhesive.

18. The optical component based on a multi-fiber array according to claim 1, characterized in that, It also includes connectors, with optical fibers connected to the connectors respectively, and the connectors are used to connect external optical fibers; The fiber array module includes 4, 8, 12, 16, or 32 optical fibers.

19. An optical module, characterized in that, Includes the optical components described in any one of claims 1-18.

20. The optical module according to claim 19, characterized in that, It also includes a housing, a substrate disposed within the housing, and a light receiving chip, wherein the housing has an assembly space, and the optical components are disposed within the assembly space; The fiber array module in the optical component is connected to the substrate, and the optical receiving chip corresponds to the coupling module and is used to receive the optical signal output by the coupling module.

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