Detachable optical module coupling structure

Abstract

The invention relates to the technical field of optical modules, and discloses a detachable optical module coupling structure, which comprises a substrate; the electric chip is arranged on the substrate; the silicon optical chip is arranged on the substrate; the lens seat is arranged on the substrate, and a first lens array is arranged at one end of the lens seat; a first V-shaped groove is formed in the outer side of the lens base, and the lens base is further provided with a first magnet. The optical fiber array comprises an optical fiber body and a plug, the plug is arranged at the end of the optical fiber body, and a second lens array is arranged at the end, away from the optical fiber body, of the plug; the silicon optical chip is in light conduction with the first lens array, the second lens array and the optical fiber body in sequence through the lens holder; a second V-shaped groove is formed in the outer side of the plug, and the plug is further provided with a second magnet; the fixing piece is connected with the lens base and the plug, the fixing piece is provided with a cylindrical face abutting against the first V-shaped groove and the second V-shaped groove, and the fixing piece is attracted to the first magnet and the second magnet. Through centering connection of the fixing piece, accurate coupling is ensured, and the requirements of convenient disassembly and flexible replacement of the optical fiber are also considered.

Description

Technical Field

[0001] This invention relates to the field of optical module technology, and in particular to a detachable optical module coupling structure. Background Technology

[0002] In optical communication systems, optical modules are the core components that enable the conversion between optical and electrical signals. With the continuous growth in AI computing power demands, data centers are placing higher requirements on the performance indicators of optical modules, such as transmission rate, signal loss, and reliability.

[0003] The coupling design between the optical module and the optical fiber is particularly critical, as the precision of the optical signal coupling directly determines the achievement of high transmission rates and low power consumption. For example, Chinese utility model patent CN218675385U discloses a silicon photonic package comprising an optical element and a connector. The optical element has a waveguide and a second magnetic structure, the second magnetic structure being disposed on the surface of the optical element and around the waveguide. The connector has an optical fiber, the optical fiber including an optical fiber core coupled to the waveguide and a first magnetic structure attracted and bonded to the optical element, the first magnetic structure being disposed on the cross-section of the optical fiber and around the optical fiber core. The waveguide and the optical fiber are joined and fixed at a second end at a first end by the attraction of the first and second magnetic structures.

[0004] In the above scheme, coupling is achieved through the magnetic attraction of the first and second magnetic structures. However, the magnetic attraction cannot reliably maintain the alignment of the optical fiber and the waveguide, and bonding adhesive is still required to fix the optical components and connectors.

[0005] Therefore, existing silicon photonic packaging components cannot simultaneously ensure precise coupling while also meeting the requirements for convenient disassembly and flexible replacement of optical fibers. Summary of the Invention

[0006] The technical problem to be solved by the present invention is that the existing silicon photonic packaging can not reliably maintain the alignment of the optical fiber and the waveguide with magnetic attraction alone, and uses bonding adhesive to fix optical components and connectors, making it difficult to ensure accurate coupling while taking into account the requirements of convenient disassembly and flexible replacement of optical fiber.

[0007] To address the aforementioned technical problems, this invention provides a technical solution for a detachable optical module coupling structure: The detachable optical module coupling structure includes: substrate; An electrical chip is disposed on the substrate and electrically connected to the substrate; A silicon photonics chip is disposed on the substrate or the electrical chip and is electrically connected to the substrate; A lens mount is disposed on the substrate, and a first lens array is provided at one end of the lens mount; a first V-groove is provided on the outer side of the lens mount, and a first magnet is also provided on the lens mount; An optical fiber array includes an optical fiber body and a plug. The plug is located at one end of the optical fiber body, and a second lens array is provided at the end of the plug away from the optical fiber body. The silicon photonic chip is optically connected to the first lens array, the second lens array, and the optical fiber body in sequence through the lens mount. A second V-groove is provided on the outside of the plug, and the plug is also provided with a second magnet. A fixing member connects the lens mount and the plug. The fixing member has a cylindrical surface that abuts against the first V-groove and the second V-groove, and the fixing member is attracted to the first magnet and the second magnet, respectively.

[0008] Furthermore, the length directions of the first V-groove and the second V-groove are both parallel to the light conduction directions of the first lens array and the second lens array, and the cross-sections of the first V-groove and the second V-groove coincide along the light conduction direction.

[0009] Furthermore, at least two first V-grooves are provided, and the at least two first V-grooves are symmetrically arranged about the lens mount; at least two second V-grooves are provided, and the at least two second V-grooves are symmetrically arranged about the plug.

[0010] Furthermore, the first magnet is disposed between the first lens array and the first V-groove, and each first V-groove has a first magnet disposed on the inner side of its groove wall; the second magnet is disposed between the second lens array and the second V-groove, and each second V-groove has a first magnet disposed on the inner side of its groove wall.

[0011] Furthermore, it also includes a snap-fit ​​component, which is located on the outside of the lens mount and / or the plug, and clamps the fixing member into the first V-groove and the second V-groove via the snap-fit ​​component.

[0012] Furthermore, the snap-fit ​​component includes a middle section and two clamping arms, the two clamping arms being located at both ends of the middle section, and the portion of the clamping arms near the middle section having an elastic deformation portion, wherein in the natural state, the distance between the two clamping arms is less than the width of the lens mount and / or the plug.

[0013] Furthermore, the inner side of the clamping arm is provided with a slot, the clamping arm engages with the fixing member through the slot, and the inner side of the clamping arm is spaced apart from the outer side of the lens seat and / or the plug.

[0014] Furthermore, the magnetic poles of the first magnet at one end of the lens mount and the magnetic poles of the second magnet at one end of the plug are opposite, and the fixing member is made of ferromagnetic or magnetic material.

[0015] Furthermore, the opening angles of the first V-groove and the second V-groove are both α, and 45°≤α≤120°; the maximum opening width of the first V-groove and the second V-groove is b, and the cylindrical diameter of the fastener is L, and 0.5*b≤L≤b.

[0016] Furthermore, the electrical chip is flip-chip mounted on the upper side of the substrate, and the silicon photonics chip is flip-chip mounted on the upper side of the electrical chip; a support portion is provided on the lower side of the lens holder, and the lens holder is connected to the substrate through the support portion; The silicon photonic chip is further provided with a coupling part on its upper side. The lens holder is spaced apart on the upper side of the silicon photonic chip. The end of the lens holder away from the first lens array is provided with a reflective surface, and the reflective surface is vertically aligned with the coupling part.

[0017] Compared with the prior art, the detachable optical module coupling structure of the present invention has the following advantages: the detachable optical module coupling structure adopts a design of substrate, electrical chip, silicon photonic chip, lens holder, fiber array and fixing component. The electrical chip is disposed on the substrate and electrically connected to the substrate. The silicon photonic chip is disposed on the substrate or the electrical chip and electrically connected to the substrate. The lens holder is disposed on the substrate, and a first lens array is provided at one end of the lens holder. The fiber array includes an optical fiber body and a plug. A second lens array is provided at one end of the plug. The silicon photonic chip is optically connected to the first lens array, the second lens array and the optical fiber body in sequence through the lens holder.

[0018] The substrate serves as the structural foundation of the entire optical module. The electrical chip is responsible for amplifying, processing, and driving the electrical signals. The silicon photonics chip integrates a laser, a photodiode (PD) element, and a waveguide. The optical signal transmission path is as follows: the laser emits an optical signal through the waveguide, which then passes sequentially through a lens mount, a first lens array, and a second lens array before entering the optical fiber body. The optical signal reception path is as follows: the optical signal is transmitted through the optical fiber body, then passes sequentially through the second lens array, the first lens array, and the lens mount before entering the waveguide. Finally, the PD element receives the optical signal and converts it into an electrical signal, thus realizing the optical signal-to-electrical signal conversion and processing function.

[0019] Furthermore, the lens mount has a first V-groove on its outer side, and the plug has a second V-groove on its outer side. The fixing member abuts against the first and second V-grooves respectively through its cylindrical surface. The fixing member forms a connection medium between the lens mount and the plug, and also plays a role in centering and positioning, ensuring the alignment accuracy of the first and second lens arrays. The lens mount also has a first magnet, and the plug also has a second magnet. The fixing member is attracted to the first and second magnets respectively. The magnetic attraction reliably holds the fixing member in the first and second V-grooves, ensuring both the coupling accuracy and reliability between the lens mount and the fiber array, while also meeting the requirements for convenient disassembly and flexible replacement of the fiber array. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the detachable optical module coupling structure according to an embodiment of the present invention; Figure 2 This is an exploded view of the detachable optical module coupling structure according to an embodiment of the present invention; Figure 3 yes Figure 1 A partial front view of the detachable optical module coupling structure (without the card connector); Figure 4 This is a schematic diagram of the lens mount of the detachable optical module coupling structure according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the connector of the detachable optical module coupling structure according to an embodiment of the present invention; In the figure: 1. Substrate; 2. Electrical chip; 3. Silicon photonics chip; 31. Coupling part; 4. Lens mount; 41. First lens array; 42. First V-groove; 43. First magnet; 44. Support part; 45. Reflective surface; 5. Fiber array; 51. Fiber body; 52. Plug; 53. Second lens array; 54. Second V-groove; 55. Second magnet; 56. MPO connector; 6. Fixing component; 7. Snap-fit ​​component; 71. Intermediate section; 72. Clamping arm; 73. Elastic deformation part; 74. Slot; 8. DSP chip. Detailed Implementation

[0021] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" used to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] like Figure 1 , Figure 2 As shown, the detachable optical module coupling structure of this embodiment includes: a substrate 1, an electrical chip 2, a silicon photonic chip 3, a lens holder 4, an optical fiber array 5, and a fixing member 6; the electrical chip 2 is disposed on the substrate 1 and electrically connected to the substrate 1; the silicon photonic chip 3 is disposed on the substrate 1 or the electrical chip 2 and electrically connected to the substrate 1; the lens holder 4 is disposed on the substrate 1, and one end of the lens holder 4 is provided with a first lens array 41; the outer side of the lens holder 4 is provided with a first V-groove 42, and the lens holder 4 is also provided with a first magnet 43.

[0026] The fiber array 5 includes a fiber body 51 and a plug 52. The plug 52 is located at the end of the fiber body 51, and a second lens array 53 is provided at the end of the plug 52 away from the fiber body 51. The silicon photonic chip 3 is optically connected to the first lens array 41, the second lens array 53 and the fiber body 51 in sequence through the lens seat 4. A second V-groove 54 is provided on the outside of the plug 52, and the plug 52 is also provided with a second magnet 55.

[0027] The fixing member 6 connects the lens base 4 and the plug 52. The fixing member 6 has a cylindrical surface that abuts against the first V-groove 42 and the second V-groove 54, and the fixing member 6 is attracted to the first magnet 43 and the second magnet 55 respectively.

[0028] Among them, substrate 1 serves as the structural foundation of the entire optical module, electrical chip 2 is responsible for amplifying, processing and driving electrical signals, silicon photonic chip 3 integrates laser, PD element and waveguide, and the optical signal transmission path is as follows: the optical signal is emitted by the laser through the waveguide, and enters the optical fiber body 51 in sequence through lens seat 4, first lens array 41 and second lens array 53.

[0029] The optical signal receiving path is as follows: the optical signal is transmitted through the optical fiber body 51, and then enters the waveguide through the second lens array 53, the first lens array 41, and the lens mount 4 in sequence. Finally, the optical signal is received by the PD element and converted into an electrical signal, thereby realizing the optical signal to electrical signal conversion processing function.

[0030] Furthermore, the outer side of the lens mount 4 is provided with a first V-groove 42, and the outer side of the plug 52 is provided with a second V-groove 54. The fixing member 6 abuts and cooperates with the first V-groove 42 and the second V-groove 54 respectively through its cylindrical surface. The fixing member 6 forms a connection medium between the lens mount 4 and the plug 52, and at the same time plays a role in centering and positioning, ensuring the alignment accuracy of the first lens array 41 and the second lens array 53.

[0031] In addition, the lens holder 4 is provided with a first magnet 43, and the plug 52 is provided with a second magnet 55. The fixing member 6 is attracted to the first magnet 43 and the second magnet 55 respectively. The fixing member 6 is reliably held in the first V-groove 42 and the second V-groove 54 by magnetic attraction. This ensures the coupling accuracy and reliability between the lens holder 4 and the fiber array 5, while also taking into account the requirements of easy disassembly and flexible replacement of the fiber array 5.

[0032] like Figure 3 As shown, the length directions of the first V-groove 42 and the second V-groove 54 are both parallel to the light conduction directions of the first lens array 41 and the second lens array 53. The cross-sections of the first V-groove 42 and the second V-groove 54 coincide along the light conduction direction. That is to say, the first V-groove 42 and the second V-groove 54 are collinearly arranged, and the cross-sectional profiles of the two V-grooves are the same, ensuring that the cylindrical surface of the fixing member 6 can simultaneously abut and position with the first V-groove 42 and the second V-groove 54, so that the lens seat 4 and the fiber array 5 form a coaxial connection effect with the fixing member 6 as the reference.

[0033] In this embodiment, two first V-grooves 42 are provided, and the two first V-grooves 42 are symmetrically arranged about the lens mount 4; correspondingly, two second V-grooves 54 are provided, and the two second V-grooves 54 are symmetrically arranged about the plug 52. The first V-grooves 42 are symmetrically arranged on the left and right sides of the lens mount 4, and the second V-grooves 54 are symmetrically arranged on the left and right sides of the plug 52. They are clamped and connected to both sides of the lens mount 4 and the plug 52 by two fixing members 6, thereby achieving the planar alignment of the first lens array 41 and the second lens array 53.

[0034] As a further preferred embodiment, the magnetic poles of the first magnet 43 at one end of the lens holder 4 and the second magnet 55 at one end of the plug 52 are opposite, and the fixing member 6 is made of ferromagnetic or magnetic material. For example, the magnetic pole of the first magnet 43 at one end of the lens holder 4 is the N pole, and the magnetic pole of the second magnet 55 at one end of the plug 52 is the S pole. The first magnet 43 and the second magnet 55 generate a magnetic force that brings them closer together, ensuring the reliability of the axial connection between the lens holder 4 and the plug 52. Furthermore, the fixing member 6 is an iron cylinder, which can form a stronger magnetic attraction with the first magnet 43 and the second magnet 55, thereby converting it into a planar alignment effect.

[0035] Alternatively, the magnetic pole of the first magnet 43 at one end of the lens holder 4 is the S pole, and the magnetic pole of the second magnet 55 at one end of the plug 52 is the N pole. The first magnet 43 and the second magnet 55 generate a magnetic force that brings them closer together, ensuring the reliability of the axial connection between the lens holder 4 and the plug 52. Furthermore, the fixing member 6 is an iron cylinder, which can form a stronger magnetic attraction with the first magnet 43 and the second magnet 55.

[0036] Alternatively, the fixing part 6 can be a permanent magnet cylinder with one end as the S pole and the other end as the N pole. The two ends of the fixing part 6 can be magnetically attracted to the N pole of the first magnet 43 and the S pole of the second magnet 55, respectively, resulting in stronger magnetic attraction and higher alignment accuracy.

[0037] In this embodiment, the opening angles of the first V-groove 42 and the second V-groove 54 are both α, and α = 90°. The maximum opening width of the first V-groove 42 and the second V-groove 54 is b, and the cylindrical diameter of the fixing member 6 is L, and L = 0.75b. This design of the opening angle, opening width, and cylindrical diameter ensures that the fixing member 6 abuts against the middle of the V-groove wall as much as possible. This location provides better flatness of the groove wall, avoids sharp corners and edge burrs, and enables more accurate centering and positioning.

[0038] In some embodiments of this application, the opening angle α of the first V-groove 42 and the second V-groove 54 can be 45°, 46°, 47°, 48°, 49°, 50°, 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, 60°, 61°, 62°, 63°, 64°, 65°, 66°, 67°, 68°, 69°, 70°, 71°, 72°, 73°, 74°, 75°, 76°, 77°, 78°, 79°, 80°, 81°, 82°, 8... 3°, 84°, 85°, 86°, 87°, 88°, 89°, 91°, 92°, 93°, 94°, 95°, 96°, 97°, 98°, 99°, 100°, 101°, 102°, 103°, 104°, 105°, 106°, 107°, 108°, 109°, 110°, 111°, 112°, 113°, 114°, 115°, 116°, 117°, 118°, 119°, or 120°, or any angle between 45° and 120°.

[0039] Correspondingly, the maximum opening width of the first V-groove 42 and the second V-groove 54 is b, and the cylindrical diameter of the fixing member 6 is L, which can satisfy: L=0.5b, 0.51b, 0.52b, 0.53b, 0.54b, 0.55b, 0.56b, 0.57b, 0.58b, 0.59b, 0.6b, 0.61b, 0.61b, 0.62b, 0.63b, 0.64b, 0.65b, 0.66b, 0.67b, 0.68b, 0.69b, 0.7b, 0.7 1b, 0.72b, 0.73b, 0.74b, 0.76b, 0.77b, 0.78b, 0.79b, 0.8b, 0.81b, 0.82b, 0.83b, 0.84b, 0.85b, 0.86b, 0.87b, 0.88b, 0.89b, 0.9b, 0.91b, 0.92b, 0.93b, 0.94b, 0.95b, 0.96b, 0.97b, 0.98b, 0.99b or b, or any size from 0.5b to b.

[0040] In some embodiments of this application, three or more first V-grooves 42 are provided, and the three or more first V-grooves 42 are symmetrically arranged about the lens mount 4; correspondingly, three or more second V-grooves 54 are provided, and the three or more second V-grooves 54 are symmetrically arranged about the plug 52. The distribution position of the V-grooves is not limited to the left or right side, but can also be the upper side and / or the lower side. Through the design of three or more centering and positioning, the reliability of the lens array alignment and coupling is further improved.

[0041] like Figure 4 As shown, a first magnet 43 is disposed between the first lens array 41 and the first V-groove 42, and a first magnet 43 is disposed on the inner side of the groove wall of each first V-groove 42. Figure 2 As shown, the second magnet 55 is disposed between the second lens array 53 and the second V-groove 54, and a first magnet 43 is disposed on the inner side of the groove wall of each second V-groove 54.

[0042] Taking the lens mount 4 as an example: each first V-groove 42 has two first magnets 43 on its inner side. The two first magnets 43 are opposite to the two groove walls of the first V-groove 42. The two first magnets 43 generate a magnetic attraction field at an angle to the fixing member 6. The direction of the magnetic attraction force of the two first magnets 43 is collinear with the angle bisector of the first V-groove 42, so that the cylindrical surface of the fixing member 6 is tightly abutted against the two groove walls of the first V-groove 42, ensuring accurate and reliable centering and positioning connection.

[0043] In this embodiment, as Figure 1 , Figure 2As shown, the detachable optical module coupling structure also includes a snap-fit ​​component 7, which is located on the outside of the lens mount 4 and / or the plug 52. The snap-fit ​​component 7 clamps the fixing component 6 into the first V-groove 42 and the second V-groove 54. The snap-fit ​​component 7 defines the installation position of the fixing component 6 from the outside direction. The clamping force and the magnetic attraction force complement each other to prevent the connection stability of the fixing component 6 from being affected by factors such as magnetic force reduction or structural vibration.

[0044] As a further preferred option, such as Figure 5 As shown, the snap-fit ​​component 7 includes a middle section 71 and two clamping arms 72. The two clamping arms 72 are located at both ends of the middle section 71, and the portion of the clamping arms 72 near the middle section 71 has an elastic deformation portion 73. In its natural state, the distance between the two clamping arms 72 is less than the width of the lens base 4 and / or the plug 52. The snap-fit ​​component 7 has a U-shaped design. The outward protrusion of the elastic deformation portion 73 not only generates a reliable clamping force but also avoids interference between the clamping arms 72 and the upper edge of the lens base 4, ensuring that the clamping force can be directly applied to the fixing component 6.

[0045] Furthermore, the inner side of the clamping arm 72 is provided with a slot 74, through which the clamping arm 72 engages with the fixing member 6, and the inner side of the clamping arm 72 is spaced apart from the outer side of the lens seat 4 and / or the plug 52. The engagement of the clamping arm 72 with the fixing member 6 through the slot 74 can generate a reliable mechanical clamping force on the fixing member 6, and can also effectively reduce the risk of the snap-fit ​​member 7 accidentally dislodging.

[0046] In addition, the electrical chip 2 is flip-chip mounted on the upper side of the substrate 1, and the silicon photonics chip 3 is flip-chip mounted on the upper side of the electrical chip 2. A DSP chip 8 is also flip-chip mounted on the upper side of the substrate 1, which acts as a digital signal processor responsible for digital processing tasks such as modulation / demodulation and encoding / decoding. The flip-chip mounting process improves the packaging integration of the optical module by mounting the electrical chip 2 and the silicon photonics chip 3. The fiber optic array 5 also includes an MPO connector 56, located at the other end of the fiber optic body 51, for connection to communication equipment or terminals.

[0047] like Figure 2 , Figure 4 As shown, a support portion 44 is provided on the lower side of the lens holder 4. The support portion 44 is arranged at intervals with the electronic chip 2 and the silicon photonic chip 3. The lens holder 4 is connected to the substrate 1 through the support portion 44. A coupling portion 31 is also provided on the upper side of the silicon photonic chip 3. The lens holder 4 is spaced above the silicon photonic chip 3. A reflecting surface 45 is provided at the end of the lens holder 4 away from the first lens array 41, and the reflecting surface 45 is vertically aligned with the coupling portion 31. The coupling portion 31 is located between the waveguide of the silicon photonic chip 3 and the reflecting surface 45 of the lens holder 4, and plays a role in aligning and focusing the optical signal transmission.

[0048] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A detachable optical module coupling structure, characterized in that, include: substrate(1); An electrical chip (2) is disposed on the substrate (1) and electrically connected to the substrate (1); A silicon photonic chip (3) is disposed on the substrate (1) or the electrical chip (2) and is electrically connected to the substrate (1); A lens holder (4) is provided on the substrate (1), and a first lens array (41) is provided at one end of the lens holder (4); a first V-groove (42) is provided on the outer side of the lens holder (4), and a first magnet (43) is also provided on the lens holder (4). The fiber array (5) includes a fiber body (51) and a plug (52). The plug (52) is located at the end of the fiber body (51), and a second lens array (53) is provided at the end of the plug (52) away from the fiber body (51). The silicon photonic chip (3) is optically connected to the first lens array (41), the second lens array (53), and the fiber body (51) in sequence through the lens holder (4). A second V-groove (54) is provided on the outside of the plug (52), and a second magnet (55) is also provided on the plug (52). The fixing member (6) connects the lens seat (4) and the plug (52). The fixing member (6) has a cylindrical surface that abuts against the first V-groove (42) and the second V-groove (54), and the fixing member (6) is attracted to the first magnet (43) and the second magnet (55) respectively.

2. The detachable optical module coupling structure according to claim 1, characterized in that, The length directions of the first V-groove (42) and the second V-groove (54) are parallel to the light conduction directions of the first lens array (41) and the second lens array (53), and the cross-sections of the first V-groove (42) and the second V-groove (54) coincide along the light conduction direction.

3. The detachable optical module coupling structure according to claim 2, characterized in that, The first V-groove (42) is provided in at least two, and the at least two first V-groove (42) are symmetrically arranged about the lens seat (4); the second V-groove (54) is provided in at least two, and the at least two second V-groove (54) are symmetrically arranged about the plug (52).

4. The detachable optical module coupling structure according to claim 3, characterized in that, The first magnet (43) is disposed between the first lens array (41) and the first V-groove (42), and each first V-groove (42) has a first magnet (43) disposed on the inner side of the groove wall; the second magnet (55) is disposed between the second lens array (53) and the second V-groove (54), and each second V-groove (54) has a first magnet (43) disposed on the inner side of the groove wall.

5. The detachable optical module coupling structure according to any one of claims 1 to 4, characterized in that, It also includes a snap-fit ​​member (7), which is located on the outside of the lens seat (4) and / or the plug (52), and clamps the fixing member (6) to the first V-groove (42) and the second V-groove (54) by means of the snap-fit ​​member (7).

6. The detachable optical module coupling structure according to claim 5, characterized in that, The snap-fit ​​component (7) includes a middle section (71) and two clamping arms (72). The two clamping arms (72) are located at both ends of the middle section (71), and the portion of the clamping arms (72) near the middle section (71) is provided with an elastic deformation portion (73). In its natural state, the distance between the two clamping arms (72) is less than the width of the lens seat (4) and / or the plug (52).

7. The detachable optical module coupling structure according to claim 6, characterized in that, The inner side of the clamping arm (72) is provided with a slot (74), the clamping arm (72) engages with the fixing member (6) through the slot (74), and the inner side of the clamping arm (72) is spaced apart from the outer side of the lens seat (4) and / or the plug (52).

8. The detachable optical module coupling structure according to any one of claims 1 to 4, characterized in that, The first magnet (43) has opposite magnetic poles at one end of the lens mount (4), and the second magnet (55) has opposite magnetic poles at one end of the plug (52). The fixing member (6) is made of ferromagnetic or magnetic material.

9. The detachable optical module coupling structure according to any one of claims 1 to 4, characterized in that, The opening angles of the first V-groove (42) and the second V-groove (54) are both α, and 45°≤α≤120°; the maximum opening width of the first V-groove (42) and the second V-groove (54) is b, and the cylindrical diameter of the fixing member (6) is L, and 0.5*b≤L≤b.

10. The detachable optical module coupling structure according to any one of claims 1 to 4, characterized in that, The electrical chip (2) is flip-mounted on the upper side of the substrate (1), and the silicon photonic chip (3) is flip-mounted on the upper side of the electrical chip (2); the lens holder (4) has a support portion (44) on its lower side, and the lens holder (4) is connected to the substrate (1) through the support portion (44). The silicon photonic chip (3) is also provided with a coupling part (31) on its upper side. The lens holder (4) is spaced apart on the upper side of the silicon photonic chip (3). The end of the lens holder (4) away from the first lens array (41) is provided with a reflective surface (45), and the reflective surface (45) is aligned vertically with the coupling part (31).

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