Optical communication device and communication equipment
By designing that the optical fiber metal sleeve does not come into contact with the ceramic sleeve, combined with the combined welding method of penetration welding and lap welding, the problem of deterioration of the optical fiber extinction ratio is solved, ensuring the quality of optical communication and reducing costs.
Patent Information
- Application Number
- CN202422335635.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-24
AI Technical Summary
In the prior art, the deterioration of the extinction ratio of the optical fibers in Polarization Extinction Ratio (PER) leads to problems such as signal distortion and reduced transmission distance.
By designing that the fiber metal sleeve and the adjustment ring does not come into contact with the ceramic sleeve, weld stress is avoided to transmit to the fiber ferrule, and a combination of penetration welding and lap welding is adopted to ensure welding strength and avoid stress influence.
Effectively keep the extinction ratio of the optical fiber unchanged, ensure the quality of optical communication, improve manufacturing yield and reduce manufacturing costs.
Smart Images
Figure CN223123274U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of optical communication, in particular to an optical communication device and a communication equipment. Background Art
[0002] When the pigtail of a laser is fixed to the main body of an optical transmitter assembly, laser welding is usually adopted. Laser penetration welding is a common welding method, which uses a laser beam to penetrate the workpiece and generate melting at the weld seam to achieve welding. Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of the connection between an optical transmitter assembly and an optical fiber in the prior art. Combining Figure 1 it can be seen that in the prior art, the penetration welding spot is very close to the optical fiber, and the stress generated during welding will affect the stress distribution of the optical fiber, resulting in the deterioration of the polarization extinction ratio (PER) of the optical fiber.
[0003] The extinction ratio is an important index of the polarization performance of light in an optical fiber and is crucial for the performance of an optical communication system. The deterioration of PER may lead to problems such as signal distortion and reduced transmission distance. Content of the Utility Model
[0004] The technical problem to be solved by the embodiments of the utility model is to provide an optical communication device and a communication equipment to solve the problems of the deterioration of the extinction ratio of the optical fiber, signal distortion in optical communication, and reduced transmission distance in the prior art.
[0005] The utility model discloses an optical communication device, including:
[0006] An optical transmitter assembly for emitting an optical signal, including an assembly housing and a housing sleeve connected to the assembly housing, the housing sleeve including a sleeve main body and a sleeve flange;
[0007] An optical fiber assembly for transmitting the optical signal, including a ceramic sleeve, an optical fiber ferrule inserted into the ceramic sleeve, and an optical fiber metal sleeve surrounding the ceramic sleeve;
[0008] An adjusting ring for connecting the optical transmitter assembly and the optical fiber assembly, one end of which is welded to the tube sleeve and the other end is welded to the optical fiber metal sleeve, the adjusting ring including an adjusting main body and an adjusting ring flange;
[0009] Wherein, the welding area between the optical fiber metal sleeve and the adjusting ring does not contact the ceramic sleeve.
[0010] Optionally, the inner wall of the optical fiber metal sleeve does not contact one end of the ceramic sleeve close to the optical transmitter assembly.
[0011] Optionally, the optical fiber metal sleeve is inserted into the adjusting ring, and the inner wall of one end of the optical fiber metal sleeve close to the optical transmitter assembly is hollowed out, and the length of the hollowed-out part is not less than the depth of the optical fiber metal sleeve inserted into the adjusting ring.
[0012] Optionally, the sleeve flange is arranged towards the side away from the component housing, the adjusting ring flange and the sleeve flange are welded, and the adjusting ring body is welded to the optical fiber metal sleeve.
[0013] Optionally, the adjusting ring flange and the sleeve flange are welded by lap welding, and the adjusting ring body and the optical fiber metal sleeve are welded by penetration welding.
[0014] Optionally, the optical fiber metal tube sleeve, the adjusting ring and the outer shell sleeve enclose a cavity, and one end of the ceramic sleeve close to the adjusting ring is located in the cavity.
[0015] Optionally, the optical fiber metal sleeve only surrounds one end of the ceramic sleeve away from the adjusting ring.
[0016] Optionally, the sleeve flange is connected to the component housing, the adjusting ring is sleeved outside the sleeve body, and the optical fiber metal sleeve is welded to the adjusting ring flange.
[0017] Optionally, the adjusting ring flange and the sleeve flange are welded by penetration welding, and the adjusting ring body and the optical fiber metal sleeve are welded by lap welding.
[0018] The present utility model also discloses a communication device, including the optical communication device as described above.
[0019] Compared with the prior art, the beneficial effects of the optical communication device provided by the embodiments of the present utility model are as follows:
[0020] The inner wall of the optical fiber metal sleeve does not contact with one end of the ceramic sleeve close to the optical transmitter assembly, so that the welding stress generated during the welding of the adjusting ring and the optical fiber metal sleeve cannot be transmitted to the ceramic sleeve, and the optical fiber ferrule in the ceramic sleeve will not be affected by the welding stress, ensuring that its extinction ratio remains unchanged, thereby ensuring the communication quality of the optical communication device and also improving the manufacturing yield of the optical communication device and reducing the manufacturing cost. Description of the Drawings
[0021] The technical solutions of the present utility model will be further described in detail below in conjunction with the drawings. In the drawings:
[0022] Figure 1 is a schematic structural diagram of the first embodiment of the optical communication device 10 provided by the present utility model;
[0023] Figure 2It is a schematic structural diagram of the second embodiment of the optical communication device 10 provided by the present utility model;
[0024] Figure 3 It is a schematic structural diagram of an embodiment of the communication device 20 provided by the present utility model.
[0025] Each reference numeral in the figure is as follows:
[0026] 10. Optical communication device; 11. Optical transmitter assembly; 111. Assembly housing; 112. Housing sleeve; 1121. Sleeve main body; 1122. Sleeve flange; 113. Lens; 12. Optical fiber assembly; 121. Ceramic sleeve; 122. Optical fiber ferrule; 123. Optical fiber metal sleeve; 13. Adjusting ring; 131. Adjusting ring main body; 132. Adjusting ring flange; 20. Communication device. Detailed implementation manners
[0027] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Now, with reference to the accompanying drawings, the preferred embodiments of the present utility model will be described in detail.
[0028] Please refer to Figure 1 and Figure 2 , Figure 1 It is a schematic structural diagram of the first embodiment of the optical communication device 10 provided by the present utility model, Figure 2 It is a schematic structural diagram of the second embodiment of the optical communication device 10 provided by the present utility model. The optical communication device 10 includes an optical transmitter assembly 11 for emitting optical signals, an optical fiber assembly 12 for transmitting optical signals, and an adjusting ring 13 for connecting the optical transmitter assembly 11 and the optical fiber assembly 12. In order to ensure a stable and reliable connection between the optical transmitter assembly 11 and the optical fiber assembly 12, welding connections are used between the optical transmitter assembly 11 and the optical fiber assembly 12 and the adjusting ring 13.
[0029] The optical transmitter assembly 11 includes an assembly housing 111 and a housing sleeve 112 connected to the assembly housing 111. The housing sleeve 112 includes a sleeve main body 1121 and a sleeve flange 1122. In this embodiment, a lens 113 is provided in the housing sleeve 112 for focusing the optical signals emitted by the optical transmitter assembly 11 and then transmitting them to the optical fiber assembly 12. The optical fiber assembly 12 includes a ceramic sleeve 121, an optical fiber ferrule 122 inserted into the ceramic sleeve 121, and an optical fiber metal sleeve 123 surrounding the ceramic sleeve 121. In this embodiment, the core of the pigtail of the optical fiber is inserted into the ceramic sleeve 121, on the light-emitting side of the lens 113, for receiving the optical signals emitted by the lens 113 and transmitting them out.
[0030] In this embodiment, the adjustment ring 13 is fixedly connected to the optical transmitter assembly 11 and the optical fiber assembly 12 by welding one end to the outer housing sleeve 112 and the other end to the optical fiber metal sleeve 123. The welding methods include penetration welding and lap welding. Penetration welding is to locally melt the material through laser, arc or other heat sources to form a weld seam. During welding, the heat source penetrates the workpiece and generates melting at the weld seam, fusing the two workpieces together in the welding area. Lap welding is to overlap the edge parts of the two workpieces and then weld in the overlapping area. During welding, the welding material is filled between the two workpieces to form a welded connection. Compared with lap welding, penetration welding will generate stronger welding stress. Penetration welding usually requires higher welding temperature and energy, resulting in a larger temperature change in the weld area. This temperature change will cause thermal expansion and contraction in the welding area, generating greater thermal stress.
[0031] Since the welding stress of penetration welding is relatively strong, if the welding stress affects the fiber ferrule 122 in the optical fiber assembly 12, it will cause deterioration of the extinction ratio of the optical fiber. Therefore, in order to avoid this problem, in this embodiment, the welding area between the optical fiber metal sleeve 123 and the adjustment ring 13 does not contact the ceramic sleeve 121, which can effectively prevent the welding stress from being transmitted to the ceramic sleeve 121 and then to the fiber ferrule 122, affecting the extinction ratio of the optical fiber.
[0032] Please continue to refer to Figure 1 and Figure 2 , one end of the optical fiber metal sleeve 123 close to the optical transmitter assembly 11 is connected to the adjustment ring 13. Therefore, the welding area between the optical fiber metal sleeve 123 and the adjustment ring 13 corresponds to one end of the ceramic sleeve 121 close to the optical transmitter assembly 11. In order to prevent the welding stress from affecting the ceramic sleeve 121 during welding and thus affecting the fiber ferrule 122, the inner wall of the optical fiber metal sleeve 123 does not contact one end of the ceramic sleeve 121 close to the optical transmitter assembly 11, so that the welding area can avoid the ceramic sleeve 121 with the fiber ferrule 122 inserted.
[0033] Please continue to refer to Figure 1 , in Figure 1 the embodiment shown, the optical fiber metal sleeve 123 is inserted into the adjustment ring 13, and the inner wall of one end of the optical fiber metal sleeve 123 close to the optical transmitter assembly 11 is hollowed out along the circumference. The length of the hollowed-out part is not less than the depth of the optical fiber metal sleeve 123 inserted into the adjustment ring 13. That is to say, when projecting the adjustment ring 13 in the direction perpendicular to the extension direction of the fiber ferrule 122, its projection area falls into the hollowed-out area, so as to ensure that when the adjustment ring 13 is welded to the optical fiber metal sleeve 123, no matter how the welding point is selected, even if it is located at the edge of the adjustment ring 13, the welding area will not contact the ceramic sleeve 121, and the welding stress will not be transmitted to the fiber ferrule 122 inside the ceramic sleeve 121.
[0034] The height of the specific hollowed-out area can be set according to actual requirements. Under the condition of ensuring requirements such as welding strength and welding depth, its height should be increased as much as possible.
[0035] The outer shell sleeve 112 includes a sleeve main body 1121 and a sleeve flange 1122, and the adjusting ring 13 includes an adjusting ring main body 131 and an adjusting ring flange 132. The sleeve flange 1122 can effectively increase the contact area between the outer shell sleeve 112 and other components, and a larger contact area is more convenient for welding with other components. Similarly, the adjusting ring flange 132 can effectively increase the contact area between the adjusting ring 13 and other components, and a larger contact area is more convenient for welding with other components.
[0036] Please continue to refer to Figure 1 , the optical fiber metal sleeve 123 is inserted into the adjusting ring 13, so that the optical fiber metal sleeve 123 and the adjusting ring 13 overlap in a direction perpendicular to the extending direction of the optical fiber ferrule 122. In this way, the fixation between the two can only be achieved by penetration welding. The position of the welding point is selected in the overlapping area between the optical fiber metal sleeve 123 and the adjusting ring 13. The welding points can be circumferentially distributed in the overlapping area between the optical fiber metal sleeve 123 and the adjusting ring 13. In this embodiment, the welding points are arranged in parallel.
[0037] The sleeve flange is arranged on the side facing the optical fiber assembly 12, and the other end of the outer shell sleeve 112 is connected to the assembly housing 111. The adjusting ring flange 132 of the adjusting ring 13 is arranged facing the sleeve flange, so that the sleeve flange and the adjusting ring flange 132 can be in contact with each other. Lap welding is used for welding on the contact surface between the sleeve flange and the adjusting ring flange 132. Since there is no overlapping relationship between the two, but they are in close contact, lap welding is suitable.
[0038] In Figure 1 In the shown embodiment, the adjusting ring 13 and the optical fiber metal sleeve 123 are welded together by penetration welding, and the inner side of the optical fiber metal sleeve 123 in the corresponding welding area is hollowed out circumferentially, so that an empty groove is formed between the optical fiber metal sleeve 123 and the ceramic sleeve. In this way, the welding stress generated when the adjusting ring 13 and the optical fiber metal sleeve 123 are subjected to penetration welding cannot pass through this empty groove and be transmitted to the ceramic sleeve, and the optical fiber ferrule 122 in the ceramic sleeve will not be affected by the welding stress, ensuring that its extinction ratio remains unchanged, thereby ensuring the communication quality of the optical communication device 10 and also improving the manufacturing yield of the optical communication device 10 and reducing the manufacturing cost.
[0039] Please refer to Figure 2, as described above, the welding of the adjusting ring 13 and the optical fiber sleeve is carried out at one end of the optical fiber assembly 12 close to the optical transmitter assembly 11, corresponding to one end of the ceramic sleeve 121 close to the adjusting ring 13. In the figure, the optical fiber metal tube sleeve, the adjusting ring 13 and the outer shell sleeve 112 enclose a cavity, and one end of the ceramic sleeve 121 close to the adjusting ring 13 is located in the cavity. In this way, when welding the adjusting ring 13 and the optical fiber metal sleeve, since the ceramic sleeve 121 is in the cavity, the welding stress generated during welding cannot pass through the cavity. Therefore, the optical fiber ferrule 122 in the ceramic sleeve 121 will not be affected by the welding stress, thus ensuring that the communication quality of the optical communication device 10 is not affected.
[0040] Please continue to refer to Figure 2 , the optical fiber metal sleeve 123 only surrounds one end of the ceramic sleeve 121 away from the adjusting ring 13, and the outer diameter of the optical fiber metal sleeve 123 is larger than the inner diameter of the adjusting ring 13. In this way, the optical fiber metal sleeve cannot be inserted into the adjusting ring 13, and the adjusting ring 13 can only be welded to the side in close contact with the optical fiber metal sleeve 123. In this way, when welding the adjusting ring 13 to the optical fiber metal sleeve 123, its welding area is away from the ceramic sleeve 121, and the welding stress will not be transmitted to the optical fiber ferrule 122.
[0041] In Figure 2 , the sleeve flange 1122 is connected to the component housing 111, so that the end without the flange faces the adjusting ring 13, and the adjusting ring flange 132 of the adjusting ring 13 faces the side of the optical fiber assembly 12. The inner diameter of the adjusting ring 13 is not less than the outer diameter of the sleeve flange 1122. Thus, the end of the outer shell sleeve 112 without the sleeve flange 1122 can be inserted into the adjusting ring 13. In this way, the outer shell sleeve 112 and the adjusting ring 13 are circumferentially overlapped. Therefore, penetration welding is suitable. The inner diameter of the outer shell sleeve 112 is much larger than the outer diameter of the ceramic sleeve, and the overlapping area of the outer shell sleeve 112 and the adjusting ring 13 is away from the ceramic sleeve. Therefore, the welding area of the penetration welding will not contact the ceramic sleeve, and the welding stress of the penetration welding will not be transmitted to the ceramic sleeve, and the optical fiber ferrule in the ceramic sleeve will not be affected by this welding stress.
[0042] The adjusting flange of the adjusting ring 13 is in close contact with the optical fiber metal sleeve 123. Since the outer diameter of the optical fiber metal sleeve 123 is larger than the inner diameter of the adjusting ring 13, the adjusting flange can be in close contact with the end face of the optical fiber metal sleeve 123. Lap welding is suitable. The welding stress of lap welding is much smaller than that of penetration welding, and the diameter of the optical fiber metal sleeve 123 is large enough, and this welding stress will not affect the optical fiber ferrule 122 in the ceramic sleeve, ensuring that its extinction ratio remains unchanged, thus ensuring the communication quality of the optical communication device 10 and also improving the manufacturing yield of the optical communication device 10 and reducing the manufacturing cost.
[0043] Please refer to Figure 3 ,Figure 3 It is a schematic structural diagram of an embodiment of the communication device 20 provided by the present utility model. The communication device 20 includes an optical communication device 10, and the optical communication device 10 is the optical communication device 10 shown in the figure or figures.
[0044] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit it. For those skilled in the art, the technical solutions recorded in the above embodiments can be modified, or some of the technical features can be equivalently replaced; and all such modifications and replacements should fall within the protection scope of the appended claims of the present utility model.
Claims
1. An optical communication device, characterized in that, Comprising: An optical transmitter component for emitting an optical signal, including a component housing and a housing sleeve connected to the component housing, the housing sleeve including a sleeve body and a sleeve flange; An optical fiber component for transmitting the optical signal, including a ceramic sleeve, an optical fiber ferrule inserted into the ceramic sleeve, and an optical fiber metal sleeve surrounding the ceramic sleeve; An adjustment ring for connecting the optical transmitter component and the optical fiber component, one end of which is welded to the housing sleeve and the other end is welded to the optical fiber metal sleeve, the adjustment ring including an adjustment body and an adjustment ring flange; Wherein, the welding area between the optical fiber metal sleeve and the adjustment ring is not in contact with the ceramic sleeve.
2. The optical communication device according to claim 1, wherein The inner wall of the optical fiber metal sleeve is not in contact with one end of the ceramic sleeve close to the optical transmitter component.
3. The optical communication device according to claim 2, wherein The optical fiber metal sleeve is inserted into the adjustment ring, and the inner wall of one end of the optical fiber metal sleeve close to the optical transmitter component is hollowed out circumferentially, and the length of the hollowed-out part is not less than the depth of the optical fiber metal sleeve inserted into the adjustment ring.
4. The optical communication device according to claim 3, characterized in that, The sleeve flange is arranged towards the side away from the component housing, the adjustment ring flange and the sleeve flange are welded, and the adjustment ring body is welded to the optical fiber metal sleeve.
5. The optical communication device according to claim 4, characterized in that, The adjustment ring flange and the sleeve flange are welded by lap welding, and the adjustment ring body and the optical fiber metal sleeve are welded by penetration welding.
6. The optical communication device according to claim 2, wherein The optical fiber metal tube sleeve, the adjustment ring and the housing sleeve enclose a cavity, and one end of the ceramic sleeve close to the adjustment ring is located in the cavity.
7. The optical communication device according to claim 6, wherein The optical fiber metal sleeve only surrounds one end of the ceramic sleeve away from the adjustment ring, and the outer diameter of the optical fiber metal sleeve is greater than the inner diameter of the adjustment ring.
8. The optical communication device according to claim 7, wherein The sleeve flange is connected to the component housing, the adjustment ring is sleeved outside the sleeve body, and the optical fiber metal sleeve is welded to the adjustment ring flange.
9. The optical communication device according to claim 8, wherein The adjustment ring flange and the sleeve flange are welded by penetration welding, and the adjustment ring body and the optical fiber metal sleeve are welded by lap welding.
10. A communication device, characterized in that, An optical communication device according to any one of claims 1-9.