Optical receiving device coupling structure and optical module

Abstract

The invention provides an optical receiving device coupling structure and an optical module, a photoelectric detector is arranged on a circuit board of the optical module, an optical receiving assembly is connected with the photoelectric detector, an auxiliary butt joint assembly is arranged on the optical receiving assembly, and welding blocks are arranged on the two sides of the butt joint position of the optical receiving assembly and the photoelectric detector. When the optical receiving assembly and the photoelectric detector are in butt joint, the auxiliary butt joint assembly and the welding block are welded and fixed, and therefore the optical receiving assembly is fixed to a circuit board of the optical module. Compared with the mode of fixing the optical receiving assembly through glue, the welding fixing strength is higher, the influence of optical fiber stress on the stability of an optical path can be better avoided, and the welding technology is higher in speed and efficiency compared with the glue fixing technology.

Description

Technical Field

[0001] The present invention relates to the field of optical communication technologies, and particularly to an optical receiver device coupling structure and an optical module. Background Art

[0002] In the prior art, the requirements for data center rate and density are getting higher and higher. Among them, the demand for DR8 modules in 800G optical modules has increased sharply, and the main packaging structures adopted are OSFP or QSFP-DD. Both of these structures adopt a structure with 8 transmitting optical paths and 8 receiving optical paths. There are a total of 16 optical fibers for receiving and transmitting, and an MT optical interface is used. The optical transmitting component connected by the MT optical interface can be pre-fixed on the circuit board with glue. After the glue is cured and stabilized, the coupling between the laser and the optical fiber is realized through a lens to complete the production of the optical path of the transmitting end. The receiving end part usually realizes optical path coupling by reflecting the optical signal to the photodetector through the end face of the optical receiving component, and is directly fixed with glue after the coupling is completed.

[0003] Since both the optical transmitting component and the optical receiving component are connected to the same MT optical interface, the module structure size is limited, the optical fiber is short, and large stress will be generated when the optical fiber is bent. The end face of the optical receiving component directly reflects the received optical signal to the photodetector, and there is no other optical element to compensate for the subsequent optical path offset. Therefore, it is required that the optical path of the receiving end can overcome the stress brought by the optical fiber during the glue curing process and the subsequent baking process to maintain the stability and reliability of the optical path. This requires high performance of the glue and curing process. The fixing strength of the glue is difficult to overcome the optical fiber stress to ensure the stability of the entire optical path. In addition, the curing time of the glue production process is long, which is inefficient for production.

[0004] In view of this, overcoming the defects of the prior art is an urgent problem to be solved in the technical field. Summary of the Invention

[0005] The technical problem to be solved by the present invention is how to strengthen the fixing strength to overcome the influence of optical fiber stress on the optical path stability and improve the efficiency of the fixing process when the optical receiving component is fixed on the circuit board.

[0006] In a first aspect, an optical receiver device coupling structure is provided, including an auxiliary docking component 3 and a welding block 4. The auxiliary docking component 3 and the welding block 4 are used to fix the optical receiving component 2 on the circuit board 5 of the optical module, wherein:

[0007] The welding block 4 is arranged on the circuit board 5, and the welding block 4 is located on both sides of the optical receiving component 2;

[0008] The auxiliary docking component 3 is arranged at the upper end of the optical receiving component 2. The two sides of the auxiliary docking component 3 are respectively welded and fixed to the welding blocks 4 on both sides of the optical receiving component 2, so as to fix the optical receiving component 2 on the circuit board 5.

[0009] Preferably, the auxiliary docking component 3 specifically includes: an auxiliary block 31 and a slider 32, where:

[0010] The auxiliary block 31 is arranged on the optical receiving component 2, and both sides of the auxiliary block 31 extend outward from both sides of the optical receiving component 2;

[0011] The slider 32 is located in the space between the auxiliary block 31 and the welding block 4, and is respectively in contact with the auxiliary block 31 and the welding block 4.

[0012] Preferably, a first limiting groove 311 is arranged on the lower surface of the auxiliary block 31. The upper end of the optical receiving component 2 is located in the first limiting groove 311, and the first limiting groove 311 is used for limiting the optical receiving component 2;

[0013] The first limiting groove 311 extends to both end faces of the auxiliary block 31. The first limiting groove 311 includes a bottom surface and at least two inner side surfaces; the bottom surface of the first limiting groove 311 is in contact with the upper end surface of the optical receiving component 2, and the two inner side surfaces of the first limiting groove 311 are respectively in contact with the two side surfaces of the optical receiving component 2.

[0014] Preferably, both sides of the first limiting groove 311 are docking parts 312. The docking parts 312 extend downward along both sides of the optical receiving component 2. The docking parts 312 are in contact with the slider 32, and the slider 32 is in contact with the welding block 4, so as to realize the relative fixation between the auxiliary block 31 and the welding block 4.

[0015] Preferably, the slider 32 includes two side insertion parts 321 and a connecting part 322, where:

[0016] The two side insertion parts 321 are relatively arranged at both ends of the connecting part 322;

[0017] The side insertion parts 321 are located between the docking parts 312 and the welding block 4. The side insertion parts 321 are fixed to the docking parts 312, and the side insertion parts 321 are fixed to the welding block 4;

[0018] The connecting part 322 is located on the optical receiving component 2.

[0019] Preferably, a second limiting groove 323 is further arranged on the side insertion part 321. The second limiting groove 323 is located at the upper end of the inner side surface of the side insertion part 321;

[0020] The inner side surface of the second limiting groove 323 is connected to the outer side surface of the docking portion 312.

[0021] Preferably, the inner side surface of the second limiting groove 323 and the outer side surface of the docking portion 312 are fixedly connected by a plurality of first welding points 6, and the first welding points 6 are located at the position where the upper end of the inner side surface of the second limiting groove 323 is connected to the outer side surface of the docking portion 312;

[0022] The first welding points 6 on the two side insertion portions 321 are symmetrically arranged.

[0023] Preferably, the side insertion portion 321 and the welding block 4 are fixedly connected by a plurality of second welding points 7, and the second welding points 7 are located at the position where the outer side of the lower end of the side insertion portion 321 is connected to the welding block 4;

[0024] The second welding points 7 on the two side insertion portions 321 are symmetrically arranged.

[0025] In a second aspect, a optical module is provided, which includes: a circuit board 5, at least two optical receiving components 2, at least two photodetectors 1, an MT optical interface, and at least two of the optical receiving device coupling structures;

[0026] The two photodetectors 1 are arranged on the circuit board 5, the two optical receiving components 2 and the two photodetectors 1 are respectively optically coupled, the two optical receiving components 2 are respectively fixed on the circuit board 5 through corresponding optical receiving device coupling structures, and the two optical receiving components 2 are both connected to the MT optical interface through optical fibers.

[0027] Preferably, the two optical receiving device coupling structures are arranged adjacent to each other on the circuit board 5, and the spacing position between the two optical receiving device coupling structures shares the same welding block 4, and the same welding block 4 is fixed to the auxiliary docking components 3 facing the inside of the two optical receiving device coupling structures.

[0028] The present invention provides an optical receiving device coupling structure and an optical module. The auxiliary docking component is arranged on the optical receiving component, and welding blocks are arranged on both sides of the optical receiving component. The auxiliary docking component is fixed to the welding block, so as to fix the optical receiving component on the circuit board of the optical module; compared with fixing the optical receiving component with glue, the welding fixing strength is higher, which can better avoid the influence of the optical fiber stress on the stability of the optical path, and the welding process is faster and more efficient than the glue fixing process. Description of the Drawings

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for use in the embodiments of the present invention. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0030] Figure 1 is a schematic structural diagram of a coupling structure of an optical receiving device on an optical module provided by an embodiment of the present invention;

[0031] Figure 2 is a top view of a coupling structure of an optical receiving device on an optical module provided by an embodiment of the present invention;

[0032] Figure 3 is a schematic structural diagram of a coupling structure of an optical receiving device provided by an embodiment of the present invention;

[0033] Figure 4 is a schematic structural diagram of a welding block of a coupling structure of an optical receiving device provided by an embodiment of the present invention;

[0034] Figure 5 is a schematic structural diagram of a coupling structure of an optical receiving device provided by an embodiment of the present invention;

[0035] Figure 6 is a schematic structural diagram of an auxiliary block and an optical receiving component of a coupling structure of an optical receiving device provided by an embodiment of the present invention;

[0036] Figure 7 is a schematic structural diagram when the auxiliary block and the optical receiving component of a coupling structure of an optical receiving device provided by an embodiment of the present invention are combined;

[0037] Figure 8 is a schematic structural diagram when the slider of a coupling structure of an optical receiving device provided by an embodiment of the present invention is separately removed;

[0038] Figure 9 is a schematic structural diagram of an auxiliary block of a coupling structure of an optical receiving device provided by an embodiment of the present invention;

[0039] Figure 10 is a schematic structural diagram of a slider of a coupling structure of an optical receiving device provided by an embodiment of the present invention;

[0040] Figure 11 is a front view of a coupling structure of an optical receiving device provided by an embodiment of the present invention;

[0041] Figure 12 is a side view of a coupling structure of an optical receiving device provided by an embodiment of the present invention;

[0042] Figure 13 It is a schematic structural diagram after welding of an optical receiver device coupling structure provided by an embodiment of the present invention;

[0043] Figure 14 It is a front view of an optical receiver device coupling structure after welding provided by an embodiment of the present invention;

[0044] Figure 15 It is a side view of an optical receiver device coupling structure after welding provided by an embodiment of the present invention;

[0045] Among them, the reference numerals are as follows:

[0046] Photodetector 1; optical receiving component 2; auxiliary docking component 3; auxiliary block 31; first limiting groove 311; docking portion 312; slider 32; side insertion portion 321; connecting portion 322; second limiting groove 323; welding block 4; circuit board 5. Detailed implementation manners

[0047] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0048] In the description of the present invention, the orientation or positional relationship indicated by terms such as "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and does not require the present invention to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0049] In the present invention, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0050] In the present invention, unless otherwise clearly defined and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral body; it can be directly connected or indirectly connected through an intermediate medium. In addition, the term "coupling" can be a way of electrical connection for realizing signal transmission.

[0051] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0052] Embodiment 1:

[0053] Embodiment 1 of the present invention provides an optical receiver device coupling structure, as Figure 1 and Figure 2 shown. The optical receiver device coupling structure is applied to an optical module, and the optical module can be an 800G optical module. Among them, at least 8 transmitting optical path structures and at least 8 receiving optical path structures are provided on the 800G optical module, and at least 16 optical fibers are required in total. Among them, the 8 transmitting optical path structures are optical transmitting components, and the 8 receiving optical path structures are at least two optical receiving components. Among them, 4 optical fibers can be provided on each optical receiving component. The optical module also includes an MT optical interface. The optical transmitting component is connected to the MT optical interface through 8 optical fibers. The optical transmitting component sends the optical signal to the outside through the MT connector. Two optical receiving components are respectively connected to the MT optical interface through 4 optical fibers. The optical receiving component receives the optical signal from the outside through the MT connector, and then directly reflects the optical signal to the photodetector provided on the circuit board through the end face of the optical receiving component itself.

[0054] In the prior art, the optical receiving component is adhesively bonded to the circuit board of the optical module. However, since the optical receiving component directly reflects the received optical signal to the photodetector and there are no other optical elements in the middle to compensate for the subsequent optical path offset, it is required that during the glue curing process and the subsequent baking process when the optical receiving component is cured on the circuit board with glue, the glue curing process and the subsequent baking process need to overcome the stress brought by the optical fiber and maintain the stability and reliability of the optical path. This requires high performance of the glue and curing process. In addition, the curing time of the glue production process is long, which is inefficient for production.

[0055] According to the disadvantages brought by fixing the optical receiving component with glue in the above prior art, this embodiment provides an optical receiver device coupling structure, as Figure 3 shown, including an auxiliary docking component 3 and a welding block 4. The auxiliary docking component 3 and the welding block 4 are used to fix the optical receiving component 2 on the circuit board 5 of the optical module, where:

[0056] The photodetector 1 is arranged on the circuit board 5 of the optical module, and the optical receiving component 2 and the photodetector 1 are optically coupled in correspondence. The welding block 4 is arranged on the circuit board 5, and the welding block 4 is located on both sides of the optical receiving component 2. The auxiliary docking component 3 is arranged at the upper end of the optical receiving component 2, and both sides of the auxiliary docking component 3 are welded and fixed to the welding blocks 4 on both sides of the optical receiving component 2, so as to fix the optical receiving component 2 on the circuit board 5 while the optical receiving component 2 is docked with the photodetector 1.

[0057] It should be noted that in this embodiment, at least two photodetectors 1 are provided on the circuit board 5 and are respectively docked with the two optical receiving components 2; the welding blocks 4 can be a whole piece and are distributed on both sides of the optical receiving component 2; as Figure 4 shown, the welding blocks 4 can also include at least two pieces, one of which is arranged on one side of the photodetector 1 and the other is arranged on the other side of the photodetector 1; in this embodiment, the welding blocks 4 can be fixed on the circuit board 5 by welding, or can be pre-bonded to the circuit board 5 with glue; the interval position between the two welding blocks 4 is used to accommodate one of the optical receiving components 2, and the optical receiving component 2 is placed at the interval position between the two welding blocks 4, and the optical receiving component 2 is docked with the corresponding photodetector 1; the auxiliary docking component 3 can be pre-bonded to the optical receiving component 2 with glue.

[0058] It should be noted that while the auxiliary docking component 3 is provided on the optical receiving component 2, it also extends outward from both sides of the optical receiving component 2, so as to be docked with the welding blocks 4 on both sides of the optical receiving component 2, and then the auxiliary docking components 3 on both sides of the optical receiving component 2 are welded to the welding blocks 4 at the corresponding positions on both sides. The auxiliary docking component 3, the welding blocks 4 and the periphery of the circuit board 5 surround the optical receiving component 2, so as to limit the optical receiving component 2; since the auxiliary docking component 3 and the welding blocks 4 are fixed by welding, the strength is much greater than that of glue bonding, and it can better absorb the stress brought by the optical fiber itself. Moreover, welding is faster than glue bonding. The glue bonding process usually takes dozens of seconds or even longer, and then it also requires baking and stabilization for up to several hours, while laser welding usually takes less than one second for fixing. In summary, the manufacturing process and long-term use process of the optical receiving device coupling structure provided in this embodiment are more stable and reliable.

[0059] Considering that when the optical receiving component 2 and the welding blocks 4 are manufactured, there may be error differences in the self-sizes of different optical receiving components 2 and welding blocks 4, and it is impossible to ensure that the auxiliary docking components 3 of each optical receiving component 2 can be well docked with the welding blocks 4. When the size and thickness between the auxiliary docking component 3 and the welding blocks 4 do not match, it may cause the auxiliary docking component 3 and the welding blocks 4 to be unable to be docked, resulting in subsequent inability to be welded and fixed; it may also cause an interference fit between the auxiliary docking component 3 and the welding blocks 4. At this time, the thickness of the optical receiving component 2 is less than the height after the auxiliary docking component 3 and the welding blocks 4 are docked, resulting in the lower end of the optical receiving component 2 being suspended and unable to contact the circuit board 5; therefore, this embodiment also involves the following design:

[0060] As Figure 5 shown, the auxiliary docking component 3 specifically includes: an auxiliary block 31 and a slider 32, where:

[0061] As shown Figures 5 - 7 in Figures 5 - 7 , the auxiliary block 31 is disposed on the optical receiving component 2, and both sides of the auxiliary block 31 extend outward from both sides of the optical receiving component 2; as shown Figure 8 in Figure 8 , the slider 32 is located in the gap between the auxiliary block 31 and the welding block 4, and is respectively in contact with the auxiliary block 31 and the welding block 4.

[0062] In this embodiment, since the position and height of the optical receiving component 2 cannot be completely determined and a certain moving space is required, the auxiliary block 31 and the welding block 4 cannot be in complete contact and cannot be directly welded. Therefore, by adding a movable slider 32 between the auxiliary block 31 and the welding block 4, close contact between the auxiliary block 31, the slider 32 and the welding block 4 can be achieved, meeting the welding requirements.

[0063] As shown Figures 5 - 8 in Figures 5 - 8 , in this embodiment, the auxiliary block 31 can be adhesively bonded to the upper end of the optical receiving component 2 with glue, and both sides of the auxiliary block 31 extend outward from both sides of the optical receiving component 2. At this time, the vertical projections of both sides of the auxiliary block 31 correspond to the welding block 4 at the corresponding positions. However, when the thickness of the welding block 4 is not large enough, both sides of the auxiliary block 31 cannot be directly corresponding to and in contact with the welding block 4. Usually, the thickness of the welding block 4 is less than the height of the optical receiving component 2. Therefore, if both sides of the auxiliary block 31 only extend outward by a part, they cannot be directly docked with the welding block 4, and there is a gap between the lower ends of both sides of the auxiliary block 31 and the upper ends of the corresponding welding block 4. According to the height of this gap, sliders 32 with appropriate thickness are inserted into the gaps on both sides, and then the sliders 32 are welded and fixed to the auxiliary block 31, and the sliders 32 are welded and fixed to the welding block 4. Through the welding of the slider 32 to the auxiliary block 31 and the welding block 4 respectively, the dimensional errors between various components are absorbed, and for optical receiving components 2 with different heights, it is not necessary to only adjust the height of the welding block 4 and the size of the auxiliary block 31, but only the size of the slider 32 needs to be adjusted according to the gap size between the welding block 4 and the auxiliary block 31.

[0064] It should be noted that in this embodiment, the auxiliary block 31, the slider 32 and the welding block 4 can all be made of materials that can be laser welded, such as stainless steel and kovar, etc.

[0065] In order to enhance the fixing strength between the auxiliary block 31 and the optical receiving component 2, thereby enhancing the connection and fixing strength among the subsequent auxiliary block 31, the slider 32 and the welding block 4, this embodiment also involves the following design:

[0066] As shown Figure 9As shown, a first limiting groove 311 is provided on the lower surface of the auxiliary block 31, and the upper end of the optical receiving component 2 is located in the first limiting groove 311, and the first limiting groove 311 is used to limit the optical receiving component 2; the first limiting groove 311 extends to the two end surfaces of the auxiliary block 31, and the first limiting groove 311 includes a bottom surface and at least two inner side surfaces; the bottom surface of the first limiting groove 311 is connected to the upper end surface of the optical receiving component 2, and the two inner side surfaces of the first limiting groove 311 are respectively connected to the two side surfaces of the optical receiving component 2.

[0067] like Figure 9 As shown, the two sides of the first limiting groove 311 are docking parts 312, and the docking parts 312 extend downward along the two sides of the optical receiving component 2. The docking parts 312 are connected to the slider 32, and the slider 32 is connected to the welding block 4, thereby realizing relative fixation between the auxiliary block 31 and the welding block 4.

[0068] like Figure 9 As shown, it should be noted that the first limiting groove 311 extends to both end surfaces of the auxiliary block 31, and the end surfaces of the auxiliary block 31 refer to the end facing the connector of the light receiving component 2 and the end facing away from the connector of the light receiving component 2. The distance between the two inner side surfaces of the first limiting groove 311 is greater than or equal to the width of the light receiving component 2.

[0069] There may be two sliders 32 corresponding to one optical receiving component 2, one slider 32 being arranged between the docking portion 312 and the welding block 4 on one side of the optical receiving component 2 and welded, and the other slider 32 being arranged between the docking portion 312 and the welding block 4 on the other side of the optical receiving component 2 and welded; in this embodiment, the slider 32 corresponding to one optical receiving component 2 may be a single one, which can be simultaneously inserted between the docking plates and the welding blocks 4 on both sides of the optical receiving module, making the structure more stable. Therefore, this embodiment also involves the following designs:

[0070] like Figure 10 As shown, the slider 32 includes two side insertion parts 321 and a connecting part 322, wherein:

[0071] The two side insertion parts 321 are relatively arranged at both ends of the connecting part 322; the side insertion part 321 is located between the docking part 312 and the welding block 4, the side insertion part 321 and the docking part 312 are fixed to each other, and the side insertion part 321 and the welding block 4 are fixed to each other; the connecting part 322 is located on the optical receiving component 2.

[0072] In this embodiment, the two side insertion portions 321 and the connecting portion 322 can be integrally formed. The two side insertion portions 321 are connected by the connecting portion 322. The connecting portion 322 passes above the upper end of the optical receiving module. The lower end of the connecting portion 322 and the inner side walls of the two side insertion portions 321 on both sides serve as a receiving groove for receiving the upper end of the optical receiving component 2, making the fixation of the optical receiving component 2 more stable.

[0073] In this embodiment, when actually manufacturing the auxiliary block 31 and the welding block 4, it is impossible to ensure the precise dimensions of the auxiliary block 31 and the welding block 4. The fitting and fixing docking between the upper and lower end faces require relatively precise thicknesses between the two components. When there are dimensional errors, it is difficult to ensure that the side insertion portion 321 of the slider 32 can stably fit and dock with the auxiliary block 31 and the welding block 4. Therefore, in this embodiment, direct fitting and docking through the upper and lower end faces are avoided, but fitting and docking are performed through the side walls, making it easier for the side insertion portion 321 of the slider 32 to fit and dock with the auxiliary block 31, reducing the dimensional accuracy requirements for the side insertion portion 321 and the auxiliary block 31. Therefore, this embodiment involves the following design.

[0074] As Figure 10 shown, a second limiting groove 323 is further provided on the side insertion portion 321. The second limiting groove 323 is located at the upper end of the inner side surface of the side insertion portion 321; the inner side surface of the second limiting groove 323 is connected to the outer side surface of the docking portion 312.

[0075] As Figure 11 and Figure 12 shown, in this embodiment, the second limiting grooves 323 are provided on both side insertion portions 321 of the slider 32. The second limiting grooves 323 are all provided at the upper end of the inner side surface of the side insertion portion 321. As Figure 11 shown, the second limiting groove 323 includes a bottom surface and side walls. The side walls are parallel to the outer side wall of the auxiliary block 3,1. When the side insertion portion 321 of the slider 32 is inserted between the auxiliary block 31 and the welding block 4, the bottom of the side insertion portion 321 does not need to fit with the lower end surface of the docking portion 312. Only the side wall of the side insertion portion 321 needs to fit with the outer side wall of the auxiliary block 31. This can not only increase the height of the side wall of the side insertion portion 321 but also increase the fitting area between the side wall of the side insertion portion 321 and the outer side wall of the auxiliary block 31. After subsequent welding and fixing, the overall fixing strength is more stable. On the other hand, the second limiting grooves 323 on the two side insertion portions 321 can also limit the auxiliary block 31, further improving the overall stability of the structure.

[0076] In this embodiment, considering the welding speed and fixing strength during welding, multi-point welding can be adopted in this embodiment, and the corresponding design is as follows:

[0077] As shown Figures 13 - 15 In the figure, the inner side surface of the second limiting groove 323 and the outer side surface of the docking portion 312 are fixedly connected through a plurality of first welding points 6, and the first welding points 6 are located at the position where the upper end of the inner side surface of the second limiting groove 323 is in contact with the outer side surface of the docking portion 312; the first welding points 6 on the two side insertion portions 321 are symmetrically arranged with each other.

[0078] As shown Figures 13 - 15 In the figure, the side insertion portion 321 and the welding block 4 are fixedly connected through a plurality of second welding points 7, and the second welding points 7 are located at the position where the outer side of the lower end of the side insertion portion 321 is in contact with the welding block 4. The second welding points 7 on the two side insertion portions 321 are symmetrically arranged with each other.

[0079] In this embodiment, as shown Figure 13 and Figure 15 In the figure, Figure 15 There are three first welding points 6 provided on one side of the slider 32 as described above, and a total of six first welding points 6 are provided on both sides. Figure 5 There are five second welding points 7 provided on one side of the slider 32 as described above, and a total of ten second welding points 7 are provided on both sides.

[0080] Embodiment 2:

[0081] On the basis of Embodiment 1, this embodiment provides an optical module for arranging the optical receiver device coupling structure described above. The optical module includes: a circuit board 5, at least two optical receiving components 2, at least two photodetectors 1, an MT optical interface, and at least two of the optical receiver device coupling structures; the two photodetectors 1 are arranged on the circuit board 5, the two optical receiving components 2 and the two photodetectors 1 are respectively coupled in optical paths, the two optical receiving components 2 are respectively fixed on the circuit board 5 through corresponding optical receiver device coupling structures, and the two optical receiving components 2 are both connected to the MT optical interface through optical fibers.

[0082] As shown Figure 1 and Figure 2As shown, in this embodiment, the optical module can be an 800G optical module. Among them, at least 8 transmitting optical path structures and at least 8 receiving optical path structures are provided on the 800G optical module, and at least 16 optical fibers are required in total. Among them, the 8 transmitting optical path structures are optical transmitting components, and the 8 receiving optical path structures are at least two optical receiving components 2. Among them, 4 optical fibers can be provided on each optical receiving component 2. The optical module also includes an MT optical interface. The optical transmitting component is connected to the MT optical interface through 8 optical fibers. The optical transmitting component sends the optical signal to the outside through the MT connector. Two optical receiving components 2 are respectively connected to the MT optical interface through 4 optical fibers. The optical receiving component 2 receives the optical signal from the outside through the MT connector, and then directly reflects the optical signal to the photodetector 1 provided on the circuit board 5 through the end face of the optical receiving component 2 itself.

[0083] Each optical receiving component 2 is correspondingly provided with the optical receiving device coupling structure. The corresponding structure design of the optical receiving device coupling structure has been described in Embodiment 1 and will not be elaborated here.

[0084] As Figure 1 and Figure 2 shown, the two optical receiving device coupling structures are arranged adjacent to each other on the circuit board 5, and the interval position between the two optical receiving device coupling structures shares the same welding block 4. The auxiliary docking components 3 facing the inside of the two optical receiving device coupling structures are both fixed to the same welding block 4.

[0085] As Figure 1 and Figure 2 shown, it is worth mentioning that in this embodiment, since there are two optical receiving components 2 provided on the optical module, four welding blocks 4 can be provided in the corresponding optical receiving device coupling structure, that is, two welding blocks 4 correspond to each optical receiving component 2. However, since the distance between the two optical receiving components 2 is relatively close, only one welding block 4 can be provided at the interval position between the two optical receiving components 2 for sharing by the two optical receiving components 2. That is, the docking ends facing the inside of the auxiliary blocks 31 at the upper ends of the two optical receiving components 2 are fixedly connected to the same welding block 4 through the side insertion parts 321 on the sliding blocks 32. In order to save the occupied space on the circuit board 5, the two optical receiving components 2 and the corresponding photodetectors 1 can be arranged staggeredly front and back to provide space for the optical receiving device coupling structures on the two optical receiving components 2. The above structure design of sharing the welding block 4 improves the space utilization rate on the circuit board 5 and makes the structure design more compact.

[0086] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An optical receiving device coupling structure, characterized in that, It includes an auxiliary docking component (3) and a welding block (4). The auxiliary docking component (3) and the welding block (4) are used to fix the optical receiving component (2) on the circuit board (5) of the optical module. Among them: The welding block (4) is arranged on the circuit board (5), and the welding block (4) is located on both sides of the optical receiving component (2); The auxiliary docking component (3) is arranged at the upper end of the optical receiving component (2). Both sides of the auxiliary docking component (3) are respectively welded and fixed to the welding blocks (4) on both sides of the optical receiving component (2) to fix the optical receiving component (2) on the circuit board (5).

2. The optical receiver device coupling structure according to claim 1, characterized in that, The auxiliary docking component (3) specifically includes: an auxiliary block (31) and a slider (32). Among them: The auxiliary block (31) is arranged on the optical receiving component (2), and both sides of the auxiliary block (31) extend outward from both sides of the optical receiving component (2); The slider (32) is located in the interval between the auxiliary block (31) and the welding block (4), and is respectively fixed to the auxiliary block (31) and the welding block (4).

3. The optical receiver device coupling structure according to claim 2, characterized in that, A first limiting groove (311) is arranged on the lower surface of the auxiliary block (31). The upper end of the optical receiving component (2) is located in the first limiting groove (311), and the first limiting groove (311) is used to limit the optical receiving component (2); The first limiting groove (311) extends to both end faces of the auxiliary block (31). The first limiting groove (311) includes a bottom surface and at least two inner side surfaces; the bottom surface of the first limiting groove (311) is in contact with the upper end surface of the optical receiving component (2), and the two inner side surfaces of the first limiting groove (311) are respectively in contact with the two side surfaces of the optical receiving component (2).

4. The optical receiver device coupling structure according to claim 3, wherein, Both sides of the first limiting groove (311) are docking parts (312). The docking parts (312) extend downward along both sides of the optical receiving component (2). The docking parts (312) are fixed to the slider (32), and the slider (32) is fixed to the welding block (4) to realize the relative fixation between the auxiliary block (31) and the welding block (4).

5. The optical receiver device coupling structure according to claim 4, characterized in that, The slider (32) includes two side insertion parts (321) and a connecting part (322). Among them: The two side insertion parts (321) are oppositely arranged at both ends of the connecting part (322); The side insertion part (321) is located between the docking part (312) and the welding block (4). The side insertion part (321) is fixed to the docking part (312), and the side insertion part (321) is fixed to the welding block (4); The connecting part (322) is located on the optical receiving component (2).

6. The optical receiver device coupling structure according to claim 5, characterized in that, A second limiting groove (323) is further arranged on the side insertion part (321). The second limiting groove (323) is located at the upper end of the inner side surface of the side insertion part (321); The inner side surface of the second limiting groove (323) is in contact with the outer side surface of the docking part (312).

7. The optical receiver device coupling structure according to claim 6, characterized in that, The inner side surface of the second limiting groove (323) and the outer side surface of the docking portion (312) are fixedly connected by a plurality of first welding points (6), and the first welding points (6) are located at the position where the upper end of the inner side surface of the second limiting groove (323) is in contact with the outer side surface of the docking portion (312); The first welding points (6) on the two side insertion portions (321) are symmetrically arranged with each other.

8. The optical receiver device coupling structure according to claim 5, wherein The side insertion portion (321) and the welding block (4) are fixedly connected by a plurality of second welding points (7), and the second welding points (7) are located at the position where the outer side of the lower end of the side insertion portion (321) is in contact with the welding block (4); The second welding points (7) on the two side insertion portions (321) are symmetrically arranged with each other.

9. An optical module, characterized in that, The optical module includes: a circuit board (5), at least two optical receiving components (2), at least two photodetectors (1), an MT optical interface, and at least two optical receiving device coupling structures according to any one of claims 1-8; The two photodetectors (1) are arranged on the circuit board (5), the two optical receiving components (2) and the two photodetectors (1) are respectively coupled in optical paths, the two optical receiving components (2) are respectively fixed on the circuit board (5) through corresponding optical receiving device coupling structures, and the two optical receiving components (2) are both connected to the MT optical interface through optical fibers.

10. The optical module according to claim 9, wherein, The two optical receiving device coupling structures are arranged adjacent to each other on the circuit board (5), and the interval positions between the two optical receiving device coupling structures share the same welding block (4), and the auxiliary docking components (3) facing the inner side of the two optical receiving device coupling structures are both fixed to the same welding block (4).

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