Optical fiber splitting system
By integrating the splitting module and the optical attenuation module, and using fiber alignment flange connections, the structure of the fiber optic splitting system is optimized, solving the problems of large system size and high maintenance costs, and achieving a compact and efficient fiber optic splitting effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-18
- Publication Date
- 2026-04-14
AI Technical Summary
Existing fiber optic splitting systems occupy a large space, have complex module connections, and are costly to maintain, making it difficult to meet the optical power requirements of different users.
The optical splitting module and optical attenuation module are integrated into one unit, and the optical fiber alignment flange connection is used. Combined with the design of winding frame and bending bracket, the system structure is optimized, the size is reduced and the applicability is improved.
This has resulted in a compact structure for the fiber optic splitting system, reducing manufacturing and maintenance costs, and improving system integration and applicability.
Smart Images
Figure CN224122785U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of optical splitting technology, specifically relating to an optical fiber splitting system. Background Technology
[0002] In fiber optic communication networks, the optical splitting system is a key component for signal distribution. With the widespread application of broadband access technologies such as fiber-to-the-home, higher requirements have been placed on the performance, reliability, and cost of optical splitting systems.
[0003] Traditional 1-to-64 fiber optic splitting systems have shortcomings in terms of splitting uniformity, insertion loss, and structural compactness. For example, the existing splitting system structure is not well-designed, occupies a large space, and is not conducive to installation and layout in limited spaces; the existing splitting system consists of multiple independent modules, the connection methods between the modules are complex, the installation and debugging efficiency is low, and signal loss or failure is easily caused by unstable connections; in order to meet the optical power requirements of different users, attenuators are often required to adjust the optical signal strength, which further increases the complexity and maintenance cost of the splitting system.
[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content
[0005] The purpose of this invention is to provide an optical fiber splitting system that solves the problems of large space occupation, complex internal module connection methods, and high manufacturing and maintenance costs of existing splitting systems.
[0006] To achieve the above objectives, a specific embodiment of this utility model provides an optical fiber splitting system, which includes a housing, a splitting module, an optical attenuation module, a polarization-maintaining fiber collimation module, and a winding frame. The housing has an internal cavity, within which the splitting module and the optical attenuation module are located. The input end of the optical attenuation module is connected to the output end of the splitting module via an optical fiber. The polarization-maintaining fiber collimation module is located outside the cavity, and its input end is connected to the output end of the optical attenuation module via an optical fiber. The winding frame is located within the cavity, and the optical fibers connected to the splitting module and the optical attenuation module are wound around the winding frame.
[0007] In one or more embodiments of this utility model, a bearing surface is formed inside the accommodating cavity, the beam splitting module is mounted on the bearing surface, and the optical attenuation module is disposed on the side of the beam splitting module facing away from the bearing surface.
[0008] In one or more embodiments of this utility model, a first mounting plate is provided in the accommodating cavity on the side of the beam splitter facing away from the bearing surface. The first mounting plate is spaced apart from the beam splitter, and the optical attenuation module is located on the side of the first mounting plate facing away from the beam splitter.
[0009] In one or more embodiments of this utility model, a second mounting plate is provided inside the accommodating cavity, a beam outlet is provided on the second mounting plate, and a window facing the beam outlet is provided on the housing. An optical fiber connected to the output end of the optical attenuation module is led out to the outside of the accommodating cavity through the beam outlet and the window.
[0010] In one or more embodiments of this utility model, the winding frame and the beam outlet are located on both sides of the beam splitting module.
[0011] In one or more embodiments of this utility model, a fiber optic alignment flange is provided inside the beam outlet, and the two ends of the fiber optic alignment flange are respectively connected to the output end of the optical attenuation module and the input end of the polarization-maintaining fiber optic collimation module through optical fibers.
[0012] In one or more embodiments of this utility model, the beam splitter has 64 output terminals, and two optical attenuation modules are provided, each optical attenuation module having 32 input terminals. The input terminals of the two optical attenuation modules are connected to the output terminals of the beam splitter in a one-to-one correspondence via optical fibers.
[0013] In one or more embodiments of this utility model, the two optical attenuation modules are spaced apart in a direction away from the beam splitter.
[0014] In one or more embodiments of this utility model, multiple winding frames are stacked together.
[0015] In one or more embodiments of this utility model, the optical fiber splitting system further includes a bending bracket disposed on the outer wall of the housing, and the bending bracket has through holes for bolts to pass through.
[0016] Compared with existing technologies, the fiber optic splitting system of this invention integrates the splitting module and the optical attenuation module into one unit, resulting in a more compact structure, reduced size, and improved integration. Furthermore, the built-in optical attenuation module can flexibly adapt to the optical power requirements of different users, enhancing the applicability of the fiber optic splitting system. In addition, integrating the optical attenuation module within the fiber optic splitting system reduces manufacturing and maintenance costs. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a three-dimensional structural diagram of an optical fiber splitting system according to an embodiment of the present invention;
[0019] Figure 2 This is a three-dimensional structural diagram of an optical fiber splitting system according to an embodiment of the present invention;
[0020] Figure 3 This is a three-dimensional structural diagram of the beam splitting module, the optical attenuation module, and the winding frame in one embodiment of the present invention;
[0021] Figure 4 This is a three-dimensional structural diagram of the optical attenuation module and the winding frame in one embodiment of the present invention.
[0022] Key reference numerals: 1. Housing; 11. Bearing surface; 12. Window; 2. Optical splitter module; 3. Optical attenuation module; 4. Winding frame; 5. First mounting plate; 6. Second mounting plate; 7. Fiber optic alignment flange; 8. Bending bracket. Detailed Implementation
[0023] To enable those skilled in the art to better understand the technical solutions of this utility model, 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 some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.
[0024] In the description of this utility model, it should be understood that the terms "top", "bottom", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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.
[0025] Furthermore, the terms "second" and "first" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined as "second" or "first" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0026] In one embodiment, reference is made to Figures 1 to 4 As shown, this utility model provides an optical fiber splitting system that can be applied to the fields of optical communication and optical transmission, and is particularly suitable for multi-channel array atomic magnetometers. The optical fiber splitting system includes a housing 1, a splitting module 2, an optical attenuation module 3, a polarization-maintaining fiber collimation module, and a winding frame 4.
[0027] Specifically, housing 1 has a split structure, with an internal cavity. Beam splitting module 2 is located within this cavity. Module 2 can split a single laser source into multiple beams, reducing system cost and size while improving system integration. Optical attenuation module 3 is also located within the cavity. Module 3 can employ either manual attenuation or motor-controlled automatic attenuation. Its input is connected to the output of beam splitting module 2 via optical fiber. After the multiple beams from beam splitting module 2 enter optical attenuation module 3, it can precisely adjust the power of each beam, effectively attenuating the beam power to flexibly meet the optical power requirements of different users, thus improving the applicability of the fiber optic splitting system. Polarization-maintaining fiber collimation module is located outside the cavity. Its input is connected to the output of optical attenuation module 3 via optical fiber. This module converts the received divergent beam into a parallel beam, allowing for better transmission of the beam to subsequent optical components or detection areas, improving beam utilization efficiency and transmission quality. The winding frame 4 is located inside the accommodating cavity, and the optical fibers connected to the beam splitting module 2 and the optical attenuation module 3 are wound on the winding frame 4.
[0028] In one embodiment, reference is made to Figure 2 As shown, a bearing surface 11 is formed inside the accommodating cavity, and the beam splitting module 2 is mounted on the bearing surface 11. The beam splitting module 2 has a two-stage beam splitting structure and forms 64 beam splitting channels, which can split a single laser source into 64 beams, and output the 64 beams one by one to the optical attenuation module 3 through 64 output terminals.
[0029] In one embodiment, reference is made to Figures 2 to 4 As shown, considering the limited space of the cavity inside the housing 1, in order to improve the integration of the system, the optical attenuation module 3 is set adjacent to the beam splitting module 2. Specifically, the optical attenuation module 3 is set on the side of the beam splitting module 2 that is away from the bearing surface 11.
[0030] Furthermore, there are two optical attenuation modules 3, each with 32 input terminals. The 64 input terminals of the two optical attenuation modules 3 are connected one-to-one with the 64 output terminals of the beam splitter module 2 via optical fibers.
[0031] In one embodiment, reference is made to Figure 4 As shown, a first mounting plate 5 is provided inside the accommodating cavity. The first mounting plate 5 is located on the side of the beam splitting module 2 facing away from the bearing surface 11, and the first mounting plate 5 is used to support the optical attenuation module 3. Specifically, the optical attenuation module 3 is located on the side of the first mounting plate 5 facing away from the beam splitting module 2. The first mounting plate 5 is spaced apart from the beam splitting module 2, and a certain amount of heat dissipation space is maintained between them.
[0032] Furthermore, two first mounting plates 5 are provided, each corresponding to one of the two optical attenuation modules 3. A gap exists between the two first mounting plates 5 in the direction away from the beam splitter 2, so that there is also a gap between the two optical attenuation modules 3, facilitating heat dissipation and wiring.
[0033] In one embodiment, reference is made to Figure 2 As shown, a second mounting plate 6 is provided inside the accommodating cavity, and a beam outlet is provided on the second mounting plate 6. A window 12 facing the beam outlet is provided on the housing 1. An optical fiber connected to the output end of the optical attenuation module 3 is led out to the outside of the accommodating cavity through the beam outlet and the window 12.
[0034] Furthermore, a fiber optic alignment flange 7 is provided inside the beam outlet. Both ends of the fiber optic alignment flange 7 are connected to the output end of the optical attenuation module 3 and the input end of the polarization-maintaining fiber collimation module via optical fibers, respectively. Compared to traditional fusion splicing methods, connecting the optical attenuation module 3 and the polarization-maintaining fiber collimation module via the fiber optic alignment flange 7 facilitates the replacement and maintenance of the beam splitter module 2, the optical attenuation module 3, and the polarization-maintaining fiber collimation module.
[0035] Furthermore, in order to match the 64 beams output by the optical attenuation module 3, both the beam outlet and the fiber alignment flange 7 are provided with 64 beams.
[0036] In one embodiment, reference is made to Figure 2 As shown, considering the limited height of the housing 1, the winding frame 4 and the beam outlet are located on both sides of the beam splitting module 2.
[0037] Furthermore, multiple winding frames 4 are provided. In order to further save space and reduce the system volume, multiple winding frames 4 are stacked in the direction away from the bearing surface 11.
[0038] In one embodiment, reference is made to Figure 1 and Figure 2As shown, the fiber optic splitting system also includes a bending bracket 8 disposed on the outer wall of the housing 1. The bending bracket 8 is generally constructed as a right-angled bent plate structure. One plate of the bending bracket 8 is fitted against the outer wall of the housing 1 and connected to the housing 1 by bolts or welding. The other plate of the bending bracket 8 has a through hole for bolts to pass through, so as to fix the housing 1 in a designated position by bolts.
[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. An optical fiber splitting system, characterized in that, The optical fiber splitting system includes: The shell (1) has an internal cavity; The beam splitting module (2) is disposed within the accommodating cavity; An optical attenuation module (3) is disposed in the cavity, and the input end of the optical attenuation module (3) is connected to the output end of the beam splitting module (2) through an optical fiber. A polarization-maintaining fiber collimation module is located outside the accommodating cavity. The input end of the polarization-maintaining fiber collimation module is connected to the output end of the optical attenuation module (3) via an optical fiber. The winding frame (4) is located inside the accommodating cavity, and the optical fiber connected to the beam splitting module (2) and the optical attenuation module (3) is wound on the winding frame (4).
2. The fiber optic splitting system according to claim 1, characterized in that, A bearing surface (11) is formed inside the accommodating cavity. The beam splitting module (2) is installed on the bearing surface (11). The light attenuation module (3) is located on the side of the beam splitting module (2) facing away from the bearing surface (11).
3. The fiber optic splitting system according to claim 2, characterized in that, The cavity contains a first mounting plate (5) located on the side of the beam splitting module (2) facing away from the bearing surface (11). The first mounting plate (5) is spaced apart from the beam splitting module (2). The light attenuation module (3) is located on the side of the first mounting plate (5) facing away from the beam splitting module (2).
4. The fiber optic splitting system according to claim 1, characterized in that, The cavity is provided with a second mounting plate (6), the second mounting plate (6) has a beam outlet, the housing (1) has a window (12) facing the beam outlet, and the optical fiber connected to the output end of the optical attenuation module (3) is led out to the outside of the cavity through the beam outlet and the window (12).
5. The fiber optic splitting system according to claim 4, characterized in that, The winding frame (4) and the beam outlet are located on both sides of the beam splitting module (2).
6. The fiber optic splitting system according to claim 4, characterized in that, The beam outlet is provided with an optical fiber alignment flange (7), and the two ends of the optical fiber alignment flange (7) are respectively connected to the output end of the optical attenuation module (3) and the input end of the polarization-maintaining optical fiber collimation module through optical fibers.
7. The fiber optic splitting system according to claim 1, characterized in that, The beam splitting module (2) has 64 output terminals. There are two optical attenuation modules (3). Each optical attenuation module (3) has 32 input terminals. The input terminals of the two optical attenuation modules (3) are connected to the output terminals of the beam splitting module (2) one-to-one through optical fibers.
8. The fiber optic splitting system according to claim 7, characterized in that, The two optical attenuation modules (3) are spaced apart in a direction away from the beam splitting module (2).
9. The fiber optic splitting system according to claim 1, characterized in that, The winding frame (4) is stacked in multiple layers.
10. The fiber optic splitting system according to claim 1, characterized in that, The optical fiber splitting system also includes a bending bracket (8) on the outer wall of the housing (1), and the bending bracket (8) has through holes for bolts to pass through.