LC type male and female attenuator
By combining the optical fiber structure, using the combination of attenuation fiber and non-attenuation fiber, the problem of attenuators with different attenuation values in the prior art requires multiple attenuation fibers, and the effect of reducing procurement costs and process losses is achieved.
Patent Information
- Application Number
- CN202422722373.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-08
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-11-08
AI Technical Summary
The existing LC-type Yin-Yang attenuators need to use various attenuation fibers with different attenuation values when making different attenuation values, resulting in high procurement costs.
Using a combined fiber structure, including attenuation fiber and two non-attenuation fibers, the length of the attenuation fiber and the total length of the non-attenuation fiber are determined by formula calculation, the amount of attenuation fiber is reduced, and the lost part in the subsequent process is filled by the non-attenuation fiber.
The procurement cost of attenuated fiber is reduced, and only the non-attenuated fiber length is lost in the subsequent process, ensuring the sufficient length of the attenuated fiber and reducing the overall cost.
Smart Images
Figure CN223296166U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of optical communication connection equipment, and particularly relates to an LC type male-female attenuator. Background Art
[0002] Existing LC-type male-female attenuators are made using attenuating optical fiber. Typically, the attenuating optical fiber in a male-female attenuator is 15.4mm long. This means that a 15.4mm length of attenuating optical fiber is pressed into the ferrule. Furthermore, the attenuating optical fiber with the corresponding attenuation value must be used based on the attenuation value of the attenuator. For example, if a male-female attenuator with a 5dB attenuation value is currently required, a 15.4mm length of attenuating optical fiber with a 5dB attenuation value must be used. In actual operation, since the attenuating optical fiber needs to undergo curing, grinding, assembly, and testing after being pressed into the ferrule, some of the attenuating optical fiber's length is lost. Therefore, the actual attenuating optical fiber used must be longer than 15.4mm to ensure that 15.4mm of attenuating optical fiber remains in the ferrule after subsequent steps.
[0003] Therefore, when making attenuators with different attenuation value requirements, it is necessary to use attenuating optical fibers with various attenuation values, that is, it is necessary to purchase attenuating optical fibers with various attenuation values. In addition, the cost of attenuating optical fibers is much higher than that of ordinary optical fibers (non-attenuating optical fibers), which leads to high procurement costs of attenuating optical fibers. Utility Model Content
[0004] In response to the shortcomings of the existing technology, the present invention provides an LC-type male-female attenuator to solve the problem that when making attenuators with different attenuation value requirements, it is necessary to use attenuating optical fibers with various attenuation values. In addition, the cost of attenuating optical fibers is much higher than that of ordinary optical fibers (non-attenuating optical fibers), which leads to high procurement costs of attenuating optical fibers.
[0005] According to the embodiment of the present invention, the present invention adopts the following technical solutions:
[0006] The LC type male-female attenuator includes a combined optical fiber, which includes an attenuating optical fiber and two non-attenuating optical fibers connected to both sides of the attenuating optical fiber. The length L1 of the attenuating optical fiber satisfies the formula: And A>B, the total length L2 of the two non-attenuating optical fibers satisfies the formula: L2 ≥ L-L1; where B is the attenuation value of the attenuator to be manufactured, A is the attenuation value of the attenuating optical fiber to be used, L is the length of the required attenuating optical fiber when the attenuating optical fiber with attenuation value B is used to manufacture the required attenuating optical fiber, and L1 is the length of the required attenuating optical fiber when the attenuating optical fiber with attenuation value A is used to manufacture the required attenuating optical fiber.
[0007] Compared with the prior art, the present invention has the following beneficial effects:
[0008] In this solution, a combined optical fiber is used. By combining attenuating optical fiber and non-attenuating optical fiber, and the attenuation value of the attenuating optical fiber used is greater than the attenuation value of the attenuator required to be manufactured, the required length of the attenuating optical fiber can be reduced after calculation according to the formula. The reduced length is then filled with non-attenuating optical fiber, thereby reducing the amount of attenuating optical fiber used and thus reducing costs.
[0009] In addition, by placing the non-attenuating optical fiber on both sides of the attenuating optical fiber, in the subsequent curing, grinding, assembly, and testing processes, only the length of the non-attenuating optical fiber will be lost, reducing the loss cost and ensuring that the length of the attenuating optical fiber is sufficient for use.
[0010] Furthermore, the attenuating optical fiber and the non-attenuating optical fiber are fused together.
[0011] Furthermore, it also includes an installation component for installing the combined optical fiber and a shell component for assembling the installation component; the installation component includes a tail handle, a mounting hole opened in the middle of the tail handle along the length direction of the tail handle, and two cores respectively inserted on both sides of the mounting hole, and a through hole for inserting the combined optical fiber is opened in the middle of the core.
[0012] Furthermore, the two ferrule ends do not contact each other.
[0013] Furthermore, the housing assembly includes a front cover and a rear seat that are detachably connected together. A first passage for assembling the mounting assembly is defined in the front cover, and a second passage for assembling the mounting assembly is defined in the rear seat.
[0014] Furthermore, a snap-in hole is provided on the front cover, and a snap-in block for snapping into the snap-in hole is provided on the outer wall of the rear seat.
[0015] Furthermore, a protrusion for limiting the end of the tail handle is provided in the first channel.
[0016] Furthermore, a spring is provided on the outer side of the tail handle, a first limiting step for limiting the spring is provided on one end of the tail handle facing the front cover, and a second limiting step for limiting the spring is provided in the second channel.
[0017] Furthermore, a ceramic ring is inserted into the second channel, and the ceramic ring is sleeved on the outside of the ferrule and abuts against the end of the tail handle.
[0018] Furthermore, a strip-shaped through groove is provided on the side wall of the ceramic ring along its axial direction. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present utility model.
[0020] Figure 2 It is a cross-sectional view of an embodiment of the present utility model.
[0021] Figure 3Schematic diagram of the structure of the combined optical fiber in the embodiment of the present utility model.
[0022] Figure 4 This is a schematic diagram of the overall structure of an embodiment of the utility model, without showing the front cover.
[0023] Figure 5 This is a schematic structural diagram of the mounting assembly, spring, and ceramic ring in an embodiment of the present utility model.
[0024] In the figure: 1. Front sleeve; 2. Rear seat; 3. Snap-in hole; 4. Ferrule; 5. Tail handle; 6. First limiting step; 7. Bump; 8. Spring; 9. Second limiting step; 10. Ceramic ring; 11. Strip groove; 12. Second channel; 13. First channel; 14. Non-attenuating optical fiber; 15. Attenuating optical fiber; 16. Combined optical fiber; 17. Mounting hole; 18. Guide part; 19. Block; 20. Guide surface. DETAILED DESCRIPTION
[0025] The present invention will be further described in detail below with reference to the accompanying drawings, and specific implementation methods will be given.
[0026] like Figure 1 、 Figure 2 As shown, the LC type male-female attenuator includes a combined optical fiber 16, a mounting assembly for mounting the combined optical fiber 16, and a housing assembly for assembling the mounting assembly.
[0027] Combine Figure 3 As shown, the combined optical fiber 16 includes an attenuating optical fiber 15 and two non-attenuating optical fibers 14 connected to both sides of the attenuating optical fiber 15. Specifically, the attenuating optical fiber 15 and the non-attenuating optical fiber 14 are fused together. The non-attenuating optical fiber 14 can be a common conventional optical fiber in the prior art. The length L1 of the attenuating optical fiber 15 satisfies the formula: With A > B, the total length L2 of the two non-attenuating optical fibers 14 satisfies the formula: L2 ≥ L - L1. Here, B is the attenuation value of the desired attenuator, A is the attenuation value of the attenuating optical fiber 15 used, L is the length of the attenuating optical fiber 15 required when using the attenuating optical fiber 15 with an attenuation value of B to produce the desired attenuator. Here, L = 15.4 mm. L1 is the length of the attenuating optical fiber 15 required when using the attenuating optical fiber 15 with an attenuation value of A to produce the desired attenuator, expressed in mm.
[0028] For example, if we need to make a Yin-Yang type attenuator with an attenuation value of B = 5dB, and use an attenuation fiber 15 with an attenuation value of A = 20dB, then That is, to produce a 5 dB male-female attenuator, a 20 dB attenuating optical fiber 15 with a length of 3.85 mm can be used. The total length L2 of the two non-attenuating optical fibers 14 is ≥ 15.4 - 3.85 = 11.55 mm. In this embodiment, taking the two non-attenuating optical fibers 14 as having the same length, the length of a single non-attenuating optical fiber 14 needs to be greater than or equal to 5.775 mm. To meet the requirements of subsequent polishing and other processes, in this embodiment, both non-attenuating optical fibers 14 are made of 5.875 mm. In actual production, the lengths of the two non-attenuating optical fibers 14 may not be the same, as long as the attenuating optical fiber 15 has a length of 3.85 mm. The length of the non-attenuating optical fiber 14 can be designed according to actual requirements. According to the calculation scheme of this embodiment, only a 20 dB attenuating optical fiber 15 is required. Any male-female attenuator with a value less than 20 dB can meet the production requirements. Similarly, only a few attenuating optical fibers 15 with high attenuation values need to be prepared to meet the production requirements, without the need to purchase attenuating optical fibers 15 with different attenuation values, thereby reducing procurement costs.
[0029] The mounting assembly includes a tail handle 5, a mounting hole 17 provided in the middle of the tail handle 5 along its length, and two ferrules 4 respectively inserted on either side of the mounting hole 17. A through hole is provided in the middle of the ferrule 4 for inserting the combined optical fiber 16. The ends of the two ferrules 4 do not touch each other. During the actual assembly process, the two ends of the combined optical fiber 16 (i.e., the non-attenuating optical fiber 14) are respectively inserted into the two ferrules 4, and the attenuating optical fiber 15 is located in the mounting hole 17. To facilitate the assembly of the ferrule 4 and the combined optical fiber 16, a guide portion 18 with a tapered cross-section is provided on one side of the through hole located in the tail handle 5.
[0030] The housing assembly includes a front cover 1 and a rear seat 2 that are detachably connected together. A first passage 13 for assembling the assembly is provided in the front cover 1, and a second passage 12 for assembling the assembly is provided in the rear seat 2. Figure 1 、 Figure 4 As shown, a snap-fitting hole 3 is provided on the front cover 1, and a snap-fitting block 19 for snapping into the snap-fitting hole 3 is provided on the outer wall of the rear seat 2. During assembly, the end of the rear seat 2 is inserted into the first channel 13. The snap-fitting block 19 is made of a block that can undergo a certain degree of deformation, such as a plastic snap-fitting block 19 or a material with elasticity. An inclined guide surface 20 is provided on the snap-fitting block 19 to facilitate the insertion of the rear seat 2 into the first channel 13. When the snap-fitting block 19 moves to the snap-fitting hole 3, the snap-fitting block 19 returns to its original shape and extends out of the snap-fitting hole 3, completing the snap-fitting.
[0031] The first channel 13 is provided with a protrusion 7 for limiting the end of the tail handle 5, and a spring 8 is sleeved on the outside of the tail handle 5. The end of the tail handle 5 facing the front sleeve 1 is provided with a first limiting step 6 for limiting the spring 8. During actual assembly, the first limiting step 6 abuts against the protrusion 7. The second channel 12 is provided with a second limiting step 9 for limiting the spring 8, that is, the two ends of the spring 8 abut against the first limiting step 6 and the second limiting step 9 respectively. A ceramic ring 10 is inserted into the second channel 12. The ceramic ring 10 is sleeved on the outside of the ferrule 4 located in the second channel 12. One end of the ceramic ring 10 abuts against the end of the tail handle 5, and there is a certain distance between the other end of the ceramic ring 10 and the end of the second channel 12. Figure 5 As shown, a strip-shaped through groove 11 is formed on the side wall of the ceramic ring 10 along its axial direction.
[0032] During assembly, first place the combined optical fiber 16 within the tail handle 5, then insert the two ferrules 4 into the mounting holes 17, pressing both ends of the combined optical fiber 16 into the through-holes of the ferrules 4. Then, fit the spring 8 over the outside of the tail handle 5, and the ceramic ring 10 over the outside of the ferrules 4. Finally, assemble the front sleeve 1 and rear seat 2, locking them together to complete the assembly.
[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. LC type Yin-Yang attenuator, characterized by: The combined optical fiber includes an attenuating optical fiber and two non-attenuating optical fibers connected to both sides of the attenuating optical fiber. The length L1 of the attenuating optical fiber satisfies the formula: And A>B, the total length L2 of the two non-attenuating optical fibers satisfies the formula: L2 ≥ L-L1; where B is the attenuation value of the attenuator to be manufactured, A is the attenuation value of the attenuating optical fiber to be used, L is the length of the required attenuating optical fiber when the attenuating optical fiber with attenuation value B is used to manufacture the required attenuating optical fiber, and L1 is the length of the required attenuating optical fiber when the attenuating optical fiber with attenuation value A is used to manufacture the required attenuating optical fiber.
2. The LC type male-female attenuator according to claim 1, characterized in that: The attenuating optical fiber and the non-attenuating optical fiber are fused together.
3. The LC type male-female attenuator according to claim 1, wherein: It also includes an installation component for installing the combined optical fiber and a shell component for assembling the installation component; the installation component includes a tail handle, a mounting hole opened in the middle of the tail handle along the length direction of the tail handle, and two ferrules respectively inserted on both sides of the mounting hole, and a through hole for inserting the combined optical fiber is opened in the middle of the ferrule.
4. The LC type male-female attenuator according to claim 3, wherein: The two ferrule ends do not contact each other.
5. The LC type male-female attenuator according to claim 3, characterized in that: The housing assembly comprises a front cover and a rear seat which are detachably connected together. A first passage for assembling the mounting assembly is provided in the front cover, and a second passage for assembling the mounting assembly is provided in the rear seat.
6. The LC type male-female attenuator according to claim 5, characterized in that: The front cover is provided with a clamping hole, and the outer wall of the rear seat is provided with a clamping block for clamping into the clamping hole.
7. The LC type male-female attenuator according to claim 5, characterized in that: A protrusion for limiting the end of the tail handle is provided in the first channel.
8. The LC type male-female attenuator according to claim 5, characterized in that: A spring is provided on the outer side of the tail handle, a first limiting step for limiting the spring is provided on one end of the tail handle facing the front cover, and a second limiting step for limiting the spring is provided in the second channel.
9. The LC type Yin-Yang attenuator according to claim 8, characterized in that: A ceramic ring is inserted into the second channel. The ceramic ring is sleeved on the outside of the insert and abuts against the end of the tail handle.
10. The LC type male-female attenuator according to claim 9, characterized in that: The side wall of the ceramic ring is provided with a strip-shaped through groove along its axial direction.