A lensed fiber packaging structure
Patent Information
- Application Number
- CN202522386841.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-11
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-11-11
AI Technical Summary
为了提高光发射端和光接收端的耦合效率，将设置透镜光纤的基底的某一面设置为斜面，如入射面或出射面，作为整个封装结构；通过反射斜面的作用将光线整形，光线全反射，实现光数据的传输；然而，这样的光纤封装结构在封装时由于反射斜面的存在导致封装不稳定，在长期的使用过程中容易脱落，导致信号传输不稳定
[0014]在本申请中，所述基底具有基底前段和基底后段，限定所述基底前段的端面垂直于所述基底的底面和侧面；能够显著提高透镜光纤的基底在封装时的便携性及安装稳定性，通过相对于底面具有垂直角度的端面来实现封装，避免了现有技术中通过倾斜端面来进行封装的方式，提高封装的稳定性；同时，通过将透镜光纤的一端设置为倾斜结构，以满足光发射端和光接收端的信号采集要求，提高信号传输的稳定性。
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Figure CN224888895U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical fiber communication technology, and in particular to a lens optical fiber packaging structure. Background Technology
[0002] Existing lensed optical fibers typically consist of an optical fiber and a miniature lens located at the end of the fiber. To improve the coupling efficiency between the optical transmitter and receiver, one side of the substrate containing the lensed optical fiber is designed as an inclined plane, such as the incident or exit surface, as part of the overall encapsulation structure. The light is shaped by the reflective inclined plane, achieving total internal reflection and thus enabling optical data transmission. However, such fiber encapsulation structures are unstable during encapsulation due to the presence of the reflective inclined plane, and are prone to detachment during long-term use, leading to unstable signal transmission. Therefore, how to improve existing designs, enhance encapsulation reliability, and improve the stability of optical fiber signal transmission are problems faced by those skilled in the art. Utility Model Content
[0003] This invention provides a packaging structure for a lens fiber. By changing the structure at the end of the lens fiber, an inclined slope structure is formed at the end of the lens fiber, replacing the existing lens fiber and the microlens at the end of the fiber, so that the two form an integral structure. This avoids the formation of an inclined slope on the exit or incident surface of the lens fiber substrate, improves the reliability of the packaging, prevents detachment due to long-term use, and improves the stability of signal transmission.
[0004] A lens fiber encapsulation structure includes a substrate, at least one lens fiber, and connectors. The substrate has a mounting groove and a flow guide groove. The mounting groove is located on the upper surface of the substrate, and the flow guide groove is located on or within the substrate, and the flow guide groove communicates with the mounting groove. The substrate has a front section and a rear section, and the end face of the front section is perpendicular to the bottom and side surfaces of the substrate. One end of the lens fiber has a predetermined angled slope. The lens fiber is located in the mounting groove and is fixed in the mounting groove by the connectors. The end of the lens fiber with the angled slope is located in the direction of the end face of the front section of the substrate and does not extend beyond the end face. The flow guide groove is used to accommodate excess connectors.
[0005] Furthermore, the mounting groove is located on the upper surface of the substrate and close to the connector, and is arranged along the axial direction of the substrate. The flow guide groove and the mounting groove are located on the same surface and are staggered.
[0006] Furthermore, the flow guide groove and the mounting groove are located on the same surface and are staggered at 90°.
[0007] Furthermore, the flow guide groove and the mounting groove are not located on the same surface, but are connected.
[0008] Furthermore, the distance between the guide groove and the end face of the front section of the substrate is 0.7~1.3mm.
[0009] Furthermore, one end of the lens fiber has a tilted surface at a predetermined angle, the tilting angle of the tilted surface relative to its axial direction being 40~45°.
[0010] Furthermore, the connector is located in the front section and the rear section of the substrate and terminates at the guide groove.
[0011] Furthermore, the lens fiber includes two opposing inclined planes.
[0012] Furthermore, one end of the lens fiber is a spherical lens, which has a certain angled inclined surface.
[0013] Furthermore, the guide groove is U-shaped or V-shaped, with a depth of 0.1~0.4mm.
[0014] In this application, the substrate has a front section and a rear section, and the end face of the front section is perpendicular to the bottom and side surfaces of the substrate. This significantly improves the portability and installation stability of the lens fiber substrate during packaging. By using an end face with a perpendicular angle to the bottom surface for packaging, the prior art avoids the method of packaging with an inclined end face, thus improving packaging stability. At the same time, by setting one end of the lens fiber to an inclined structure, the signal acquisition requirements of the optical transmitter and receiver are met, thereby improving the stability of signal transmission.
[0015] Meanwhile, a flow guide groove is provided on the surface or inside the substrate so that the connector is located between the front and rear sections of the substrate and terminates at the flow guide groove. The flow guide groove is used to accommodate the connector, which can prevent the connector from being contaminated by excessive overflow at the tip of the lens fiber, thus affecting performance. Therefore, this application has beneficial technical effects compared to the prior art. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 A schematic diagram of the packaging structure of a lens fiber provided by this utility model;
[0018] Figure 2A schematic diagram of the substrate for the encapsulation structure of a lens fiber provided by this utility model;
[0019] Figure 3 A schematic diagram of the structure of a lens fiber provided by this utility model Figure 1 ;
[0020] Figure 4 A schematic diagram of the structure of a lens fiber provided by this utility model Figure 2 ;
[0021] Figure 5 A schematic diagram of the packaging structure of a lens fiber provided by this utility model;
[0022] Figure 6 This is a schematic diagram of the structure of a lens fiber provided by this utility model. Detailed Implementation
[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0024] like Figures 1-6 As shown, a lens fiber encapsulation structure 1000 includes a substrate 10, at least one lens fiber 20, and a connector 30. The substrate 10 is provided with a mounting groove 101 and a flow guide groove 102. The mounting groove 101 is located on the upper surface of the substrate 10, and the flow guide groove 102 is located on or in the substrate 10, and the flow guide groove 102 communicates with the mounting groove 101. The substrate 10 has a front section 10' and a rear section 10'', and the end face 103 of the front section 10' is perpendicular to the bottom and side surfaces of the substrate. One end of the lens fiber 20 has an inclined surface 201 at a predetermined angle. The lens fiber 20 is located in the mounting groove 101 and is fixed in the mounting groove 101 by the connector 30. The end of the lens fiber 20 with the inclined surface 201 is located in the end face direction of the front section of the substrate and does not extend beyond the end face 103. The flow guide groove 102 is used to accommodate excess connectors.
[0025] In one embodiment, such as Figure 2As shown, the base 10 is provided with a mounting groove 101 and a flow guide groove 102. The mounting groove 101 is located on the upper surface of the base 10 and close to the connector 30, and is arranged along the axial direction of the base 10. The flow guide groove 102 is located on the base 10 or in the base 10. Figure 2 In the middle, the flow guide groove 102 is located on the upper surface of the base 10, on the same surface as the mounting groove 101, and is staggered with the mounting groove 101.
[0026] Of course, the flow guide groove 102 and the mounting groove 101 are not located on the same surface, but they must be connected.
[0027] Alternatively, in some other embodiments, the guide groove 102 and the mounting groove 101 are arranged perpendicularly and intersectingly, that is, the guide groove 102 and the mounting groove 101 are located on the same surface and are staggered at 90°; in some other embodiments, the guide groove 102 and the mounting groove 101 intersect but are not arranged perpendicularly.
[0028] In some other embodiments, based on Figure 2 The design and concept of this application, changing the setting position of the guide channel 102, for example, the guide channel 102 can be set on the side of the base 10 or located inside the base 10, are all within the protection scope of this application; these two embodiments are not shown in the accompanying drawings of this application, but it does not mean that they are not part of the content that this application should protect.
[0029] Furthermore, combining Figure 2 The distance between the flow guide groove 102 and the end face 103 of the front section 10' of the substrate is 0.7~1.3mm, or 0.8~1.2mm, or 0.8mm, 1mm, or 1.2mm. In order to avoid damage to the front end of the lens fiber 20 when fixing the lens fiber 20 through the connector, the distance between the flow guide groove 102 and the end face 103 needs to be determined according to the number of lens fibers 20 and the situation of avoiding damage.
[0030] The term "end face" as used in this application refers to the surface of the front section 10' of the substrate perpendicular to the axis of the lens fiber, along the direction in which the lens fiber is set.
[0031] The guide channel is U-shaped or V-shaped.
[0032] Of course, the depth of the guide groove 102 is 0.1~0.4mm, illustratively, such as 0.1mm, 0.2mm, 0.3mm, 0.4mm.
[0033] like Figure 3 , Figure 4As shown, one end of the lens fiber 20 has a tilted surface 201 at a predetermined angle. The tilted surface 201 is tilted at an angle of 40~45° relative to its axial direction, such as 41°, 42°, 42.5°, 43°, 43.5°, 44°, 45°, etc. The end of the lens fiber 20 with the tilted surface 201 is close to the end face 103 of the front section 10' of the substrate and does not extend beyond the end face 103. The tilted surface 201 faces away from the substrate 10.
[0034] The number of mounting slots 101 matches the number of lens optical fibers 20.
[0035] The present application significantly improves the portability and installation stability of the lens fiber substrate 10 during packaging. The packaging is achieved by using an end face 103 with a vertical angle relative to the bottom surface, avoiding the packaging method of using an inclined end face in the prior art, thus improving the packaging stability. At the same time, by setting one end of the lens fiber 20 to an inclined structure, the signal acquisition requirements of the optical transmitter and optical receiver are met.
[0036] Combination Figure 1 , Figure 3 , Figure 5 The front end of the lens fiber 20 is located in the mounting groove 101, the rear end of the lens fiber 20 is located in the rear section 10" of the substrate, and the lens fiber 20 is fixed in the mounting groove 101 by the connector 30.
[0037] like Figure 1 As shown, the connector 30 is located between the front section 10' and the rear section 10" of the substrate and terminates at the guide groove 102. In this application, "terminating at the guide groove 102" means that the connector 30 is provided on the surface of the guide groove facing the rear section 10" of the substrate, but not on the surface of the guide groove facing the end face 103 of the front section 10' of the substrate. This prevents contamination of the tilted end of the lens fiber by the connector 30, thereby improving the stability of signal transmission.
[0038] Based on the above embodiments and the solution of this application, in some other embodiments, this application provides a lens fiber encapsulation structure 1000, including a substrate 10, a lens fiber 20, and a connector 30; the lens fiber 20 is located in the mounting groove 101 and is fixed in the mounting groove 101 by the connector 30; the number of mounting grooves 101 matches the number of lens fibers 20.
[0039] like Figure 3 and Figure 4As shown, one end of the lens fiber 20 includes an inclined plane 201. In some other embodiments, the plane of symmetry of the inclined plane 201 of the lens fiber 20 is also set as an inclined plane (not shown in the figure), that is, it includes two oppositely arranged inclined planes 201, setting one end of the lens fiber 20 into a tapered structure to expand the application scenarios of this structure in optical communication.
[0040] Of course, in some other embodiments, one end of the lens fiber 20 is a spherical lens structure (not shown in the figure), which has a tilted slope 201 at a predetermined angle to achieve certain communication function requirements.
[0041] In the above embodiments, the lens shape at one end of the lens fiber 20 can be varied, such as... Figure 3 and Figure 4 The image shows a lens structure with an inclined plane, and also includes structures where one end is a spherical lens, such as... Figure 6 As shown, it has a circular spherical lens structure, and an inclined surface 201 is provided on the surface of the lens structure.
[0042] Therefore, it is sufficient to ensure that one end of the optical fiber has a tilted slope 201 at a predetermined angle. All of these can serve as optical fiber structures for encapsulation and are within the scope of protection of this application.
[0043] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A packaging structure for a lens fiber, comprising a substrate, at least one lens fiber, and a connector; characterized in that, The substrate is provided with a mounting groove and a flow guide groove. The mounting groove is located on the upper surface of the substrate, and the flow guide groove is located on or in the substrate, and the flow guide groove communicates with the mounting groove. The substrate has a front section and a rear section. The end face of the front section is perpendicular to the bottom and side surfaces of the substrate. One end of the lens fiber has a predetermined angled slope. The lens fiber is located in the mounting groove and is fixed in the mounting groove by the connector. The end of the lens fiber with the angled slope is located in the direction of the end face of the front section of the substrate and does not extend beyond the end face. The flow guide groove is used to accommodate excess connectors.
2. The packaging structure of a lens fiber according to claim 1, characterized in that, The mounting groove is located on the upper surface of the substrate and close to the connector, and is arranged along the axial direction of the substrate. The flow guide groove and the mounting groove are located on the same surface and are staggered.
3. The packaging structure of a lens fiber according to claim 2, characterized in that, The flow guide groove and the mounting groove are located on the same surface and are staggered at 90°.
4. The encapsulation structure of a lens fiber according to any one of claims 1 or 2, characterized in that, The flow guide groove and the mounting groove are not located on the same surface, but are connected.
5. The encapsulation structure of a lens fiber according to any one of claims 1 or 2, characterized in that, The distance between the guide groove and the end face of the front section of the substrate is 0.7~1.3mm.
6. The encapsulation structure of a lens fiber according to any one of claims 1 or 2, characterized in that, One end of the lens fiber has a tilted surface at a predetermined angle, and the tilted surface is tilted at an angle of 40~45° relative to its axial direction.
7. The packaging structure of a lens fiber according to claim 1, characterized in that, The connector is located in the front and rear sections of the substrate and terminates at the guide groove.
8. The packaging structure of a lens fiber according to claim 1, characterized in that, The lens fiber includes two opposing inclined planes.
9. The packaging structure of a lens fiber according to claim 1, characterized in that, One end of the optical fiber of the lens is a spherical lens, which has a certain angle of inclination.
10. The packaging structure of a lens fiber according to claim 5, characterized in that, The guide groove is U-shaped or V-shaped, with a depth of 0.1~0.4mm.