An optical fiber connector, optical module and communication module

Abstract

The application discloses an optical fiber connector, an optical module and a communication module, and belongs to the technical field of optical communication. The optical fiber connector comprises a connector body, the outer circumferential wall of the connector body is provided with an outer flange, the outer flange is provided with a notch, and the outer circumferential wall of the connector body is provided with two spaced first positioning surfaces. The optical fiber connector can be positioned once through the two first positioning surfaces matched with two opposite second positioning surfaces on the shell. The outer flange can be inserted into the positioning groove, so that the optical fiber connector is positioned twice. In addition, the notch on the outer flange can be matched with the protrusion in the positioning groove, so that the optical fiber connector can be effectively prevented from being assembled by 180 degrees when being inserted. The optical fiber connector can be accurately positioned on the shell through the above two times of positioning, and the installation precision of the optical fiber connector is improved.

Description

Technical Field

[0001] This invention belongs to the field of optical communication technology, specifically relating to an optical fiber connector, an optical module, and a communication module. Background Technology

[0002] With the rapid development of information technology, fiber-to-the-home (FTTH) technology has gradually become a research hotspot in the field of communications. As a core component of communication technology, optical modules significantly impact the user's actual experience.

[0003] Fiber optic connectors are a crucial component of optical modules. Their primary function is to connect fiber optic plugs, enabling the optical module to connect with external optical fibers and thus achieve signal transmission between the external optical signals and the optical module. However, existing optical module fiber optic connectors are typically clamped into the module's housing. Since the outer periphery of the fiber optic connector is usually curved, it is highly susceptible to rotation and misalignment within the housing. This results in poor installation accuracy, affecting not only the optical module's packaging but also its signal transmission. Summary of the Invention

[0004] In view of the above-mentioned defects or improvement needs of the prior art, the present invention provides an optical fiber connector, an optical module and a communication module, the purpose of which is to achieve precise positioning of the optical fiber connector on the housing cover, avoid rotation or offset of the optical fiber connector, and improve the installation accuracy of the optical fiber connector.

[0005] In a first aspect, the present invention provides an optical fiber connector, the optical fiber connector comprising a connector body, the outer peripheral wall of the connector body having an outer flange, the outer flange having a notch, and the outer peripheral wall of the connector body having two spaced first positioning surfaces.

[0006] Optionally, the notch is triangular, and the width of the notch gradually increases in the direction from the inner edge of the outer flange to the outer edge of the outer flange.

[0007] Optionally, the angle corresponding to the notch is 30-60°.

[0008] Optionally, one end of each of the two first positioning surfaces extends to the end of the connector body away from the outer flange, and the other end of each of the two first positioning surfaces extends to the outer flange and connects with the outer flange.

[0009] Optionally, the connector body has a tapered surface that gradually decreases in size at the outer periphery of the end away from the outer flange.

[0010] In a second aspect, the present invention provides an optical module, the optical module comprising an optical fiber connector, an optical fiber, and a housing as described in the first aspect;

[0011] The connector body is connected to the optical fiber;

[0012] The housing has a positioning groove for inserting the outer flange and two spaced second positioning surfaces, each second positioning surface matching the corresponding first positioning surface for primary positioning of the fiber optic connector. The positioning groove has a protrusion that matches the notch for secondary positioning of the fiber optic connector.

[0013] Optionally, the optical fiber includes, but is not limited to, multi-core optical fiber, polarization-maintaining optical fiber, and hollow-core optical fiber.

[0014] Optionally, the housing includes a cover and a base, which are detachably connected to clamp the fiber optic connector. The base has a boss and a groove on the boss. The two opposite sides of the groove are the second positioning surfaces, and the positioning groove is located on the boss.

[0015] Optionally, the bottom of the groove is a first arc-shaped slot that matches the outer periphery of the connector body, and the cover has a second arc-shaped slot. The second arc-shaped slot and the groove form a clamping space for accommodating the connector body.

[0016] Optionally, the housing has a first radiation baffle, and the side of the first radiation baffle facing the housing cover has at least one first optical fiber clearance opening. The first arc-shaped slot and the second arc-shaped slot are coaxially arranged with the first optical fiber clearance opening, and the positioning groove is located between the first arc-shaped slot and the first radiation baffle.

[0017] Optionally, the cover has a second radiation baffle, and the side of the second radiation baffle facing away from the cover is provided with a second fiber optic clearance port corresponding to the first fiber optic clearance port. The second radiation baffle and the first radiation baffle are staggered to adjust the size of the fiber optic receiving port formed by the first fiber optic clearance port and the second fiber optic clearance port.

[0018] Optionally, a receiving cavity for accommodating an optoelectronic component is formed between the housing cover and the housing base, the receiving cavity being arranged opposite to the optical fiber connector.

[0019] Thirdly, the present invention provides a communication module, the communication module including an optical module and an optical fiber plug as described in the second aspect, wherein the inner peripheral wall of the optical fiber plug has two spaced third positioning surfaces, each of the third positioning surfaces matching the corresponding second positioning surface, so as to be precisely inserted into the optical fiber connector.

[0020] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art include:

[0021] (1) In a fiber optic connector of the present invention, two first positioning surfaces can be matched with two opposing second positioning surfaces on the housing (the two first positioning surfaces are located between the two second positioning surfaces, and the first positioning surfaces are in close contact with the corresponding second positioning surfaces), thereby enabling primary positioning of the fiber optic connector. An outer flange can be inserted into a positioning groove, thereby enabling secondary positioning of the fiber optic connector. Furthermore, the outer flange has a notch that matches a protrusion in the positioning groove, enabling angular positioning of the fiber optic connector during secondary positioning, effectively preventing 180° assembly errors during insertion. Through the above positioning, the fiber optic connector can achieve precise positioning on the housing, preventing rotation and offset of the fiber optic connector, and improving the installation accuracy of the fiber optic connector.

[0022] (2) An optical fiber connector of the present invention has a triangular notch, and the width of the notch gradually increases in the direction from the inner edge of the outer flange to the outer edge of the outer flange. This not only facilitates processing, but also allows the small end of the protrusion to be inserted into the positioning groove first, and then gradually inserted into the small end of the notch during the process of inserting the outer flange into the positioning groove, thereby achieving convenient insertion.

[0023] (3) An optical fiber connector of the present invention has an angle of 30-60° corresponding to the notch. When the protrusion in the positioning groove is engaged, the design of the notch can ensure the positioning of the arc connector body at the optical module housing and prevent angle deflection. In particular, when the optical fiber connector is connected to multi-core optical fiber, polarization-maintaining optical fiber, or hollow optical fiber, it can prevent signal failure caused by angle deflection along the optical fiber axis when the optical fiber connector is connected to the optical fiber plug.

[0024] (4) An optical module of the present invention, by setting the housing as a detachable connection between the housing cover and the housing base, can realize the clamping protection of the fiber optic connector and facilitate maintenance. In addition, the boss can provide machining positions for the groove and positioning slot, so as to avoid the groove or positioning slot affecting the structural strength of the housing base.

[0025] (5) A communication module of the present invention can achieve precise insertion of the fiber optic plug into the fiber optic connector by cooperating with the third positioning surface on the fiber optic plug and the first positioning surface of the fiber optic connector, thereby ensuring the conduction of the optical path between the fiber optic plug and the fiber optic connector and avoiding signal failure problems. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an optical fiber connector provided in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of an optical module provided in an embodiment of the present invention;

[0028] Figure 3This is a first view of the housing provided in an embodiment of the present invention;

[0029] Figure 4 This is a second view of the housing provided in an embodiment of the present invention;

[0030] Figure 5 This is a partial enlarged view of the housing provided in an embodiment of the present invention;

[0031] Figure 6 This is a first view of the shell cover provided in an embodiment of the present invention;

[0032] Figure 7 This is a second view of the shell cover provided in an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the unlocking pull ring provided in an embodiment of the present invention.

[0034] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0035] 1. Fiber optic connector; 10. Connector body; 11. Outer flange; 111. Notch; 12. First positioning surface; 13. First body; 14. Second body; 2. Optical module; 21. Optical fiber; 22. Housing; 221. Positioning groove; 2211. Protrusion; 222. Second positioning surface; 223. Housing cover; 2231. Second arc-shaped slot; 2232. Second radiation baffle; 2233. Anti-radiation groove; 2234. Positioning post; 2235. Label slot; 2236. Threaded hole; 2237. Optical port shielding adhesive groove; 224. Housing base; 2241. Boss; 2242. First arc-shaped slot ; 2243, First radiation baffle; 2244, First mounting groove; 2245, Second mounting groove; 2246, Spring groove; 2247, Limiting groove; 2248, Guide groove; 2249, Guide hole; 2250, Anti-radiation protrusion; 2260, Positioning hole; 2270, Anti-EMI radiation rib; 2280, First fiber optic avoidance opening; 2281, Arc-shaped groove; 2282, Receiving groove; 225, Unlocking pull ring; 2251, Handle; 2252, Connecting arm; 2253, Tongue; 2254, Protrusion; 2255, Limiting protrusion; 2261, First fin; 2262, Second fin. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the 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 merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0037] 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," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] 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 at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] 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 mechanical connection or an electrical connection; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] Example:

[0042] Figure 1 This is a structural schematic diagram of an optical fiber connector provided in an embodiment of the present invention, as shown below. Figure 1As shown, the fiber optic connector 1 includes a connector body 10, the outer peripheral wall of the connector body 10 has an outer flange 11, the outer flange 11 has a notch 111, and the outer peripheral wall of the connector body 10 has two spaced first positioning surfaces 12.

[0043] The connector body 10 is generally cylindrical. There is a cavity along the axial direction of the cylinder to facilitate the insertion or passage of optical fibers through the cavity.

[0044] In a fiber optic connector provided by an embodiment of the present invention, in a first aspect, the outer peripheral wall of the connector body 10 has two spaced first positioning surfaces 12. These two first positioning surfaces 12 can be matched with two opposing second positioning surfaces 222 on the housing 22 (the two first positioning surfaces 12 are located between the two second positioning surfaces 222, and the first positioning surfaces 12 are in contact with the corresponding second positioning surfaces 222), thereby enabling one-time positioning of the fiber optic connector 1. The two first positioning surfaces 12 are generally rectangular and extend along the long axis of the connector body 10. For example, the two first positioning surfaces 12 are parallel to each other and located on opposite sides of the connector body 10. The distance between the two first positioning surfaces 12 is slightly smaller than the cylindrical diameter of the connector body 10. Optionally, the two first positioning surfaces 12 are spaced apart from each other without being parallel.

[0045] On the other hand, since the outer peripheral wall of the connector body 10 has an outer flange 11, the outer flange 11 can match the positioning groove 221 on the housing 22. That is, the outer flange 11 can be inserted into the positioning groove 221, thereby performing secondary positioning of the fiber optic connector 1. The outer flange 11 is annular, and the annular plane is perpendicular to the long axis of the cylinder of the connector body 10 and fits around the outside of the cylinder of the connector body 10. The position of the outer flange 11 in the axial direction of the cylinder of the connector body 10 defines one short side of the two first positioning surfaces 12, and the other short side of the two first positioning surfaces 12 extends to the edge of the cylinder of the connector body 10 away from the outer flange 11. The position of the outer flange 11 in the axial direction of the cylinder of the connector body 10 is closer to the side where the fiber optic connector leads out.

[0046] In addition, the outer flange 11 has a notch 111, which can match the protrusion 2211 in the positioning groove 221. This allows for angular positioning of the fiber optic connector during secondary positioning, effectively preventing assembly errors such as 180° rotation along the fiber optic axis during insertion. Through this positioning, the fiber optic connector 1 can be accurately positioned on the housing 22, preventing rotation and offset during installation and improving the installation accuracy.

[0047] In other words, the fiber optic connector provided in this embodiment of the invention can achieve precise positioning of the fiber optic connector 1 on the housing 22, avoid rotation or offset of the fiber optic connector 1, and improve the installation accuracy of the fiber optic connector 1.

[0048] In one implementation of the present invention, the notch 111 is triangular, and the width of the notch 111 gradually increases in the direction from the inner edge of the outer flange 11 to the outer edge of the outer flange 11. The notch 111 is located within the annular plane of the outer flange 11.

[0049] It is easy to understand that the triangular shape of the notch 111 not only facilitates processing, but also allows the small end of the protrusion 2211 to be inserted into the large end of the notch 111 first, and then gradually inserted into the small end of the notch 111 during the process of inserting the outer flange 11 into the positioning groove 221, thereby achieving convenient insertion.

[0050] For example, the angle corresponding to the notch 111 can be 30-60°. This notch design ensures that when the protrusion in the positioning groove engages, the arc-shaped fiber optic connector body is positioned along the fiber optic axis rotation angle when it is located in the optical module housing, without angular deflection. This is especially important when the fiber optic connector is connected to non-axially symmetrical fibers such as multi-core fibers, polarization-maintaining fibers, and hollow fibers, thus avoiding signal failure problems caused by angular deflection when the fiber optic connector is connected to the fiber optic plug.

[0051] For example, the left end of the connector body 10 is the first body 13, the right end of the connector body 10 is the second body 14, the outer flange 11 is located between the first body 13 and the second body 14, and the outer flange 11, the first body 13 and the second body 14 are arranged coaxially.

[0052] See also Figure 1 One end of each of the two first positioning surfaces 12 extends to the end of the connector body 10 away from the outer flange 11, and the other end of each of the two first positioning surfaces 12 extends to and connects with the outer flange 11. That is, the left end of each of the two first positioning surfaces 12 (facing...) Figure 1 The left end of the first positioning surface 12 extends to the left end of the connector body 10, and the right ends of the two first positioning surfaces 12 extend to the outer flange 11 of the connector body 10. This not only facilitates the processing of the first positioning surface 12, but also effectively increases the length of the first positioning surface 12 in the axial direction of the connector body 10, thereby increasing the positioning area during the positioning process.

[0053] Furthermore, the outer periphery of the connector body 10 away from the outer flange 11 has a gradually decreasing tapered surface.

[0054] It is easy to understand that the outer periphery of the connector body 10 away from the outer flange 11 has a gradually decreasing tapered surface, which not only allows the left edge of the connector body 10 to form a certain chamfer, but also guides the alignment when the fiber optic connector 1 is inserted into the fiber optic plug, making it easier for the fiber in the fiber optic plug to be aligned with the fiber in the fiber optic connector 1.

[0055] Figure 2 This is a schematic diagram of the structure of an optical module provided in an embodiment of the present invention, as shown below. Figure 2 As shown, the optical module 2 includes the optical fiber connector 1, optical fiber 21 and housing 22 as described above.

[0056] The connector body 10 is connected to the optical fiber 21.

[0057] The housing 22 has a positioning groove 221 for inserting the outer flange 11 (see also) Figure 5 The fiber optic connector 1 has two spaced second positioning surfaces 222, each of which matches the corresponding first positioning surface 12 for primary positioning. The positioning groove 221 has a protrusion 2211 that matches the notch 111 for secondary positioning of the fiber optic connector 1.

[0058] Since the second positioning surface 222 matches the first positioning surface 12, the second positioning surface 222 is also rectangular, and the rectangular sides extend along the axial direction of the optical fiber. The second positioning surface 222 does not need to have the same rectangular area as the first positioning surface 12. Since the outer flange 11 is perpendicular to the optical fiber axis, the positioning groove 221 is also perpendicular to the optical fiber axis, and the dimension of the positioning groove 221 along the optical fiber axis defines the width of the positioning groove 221, which matches the thickness of the outer flange 11.

[0059] Similarly, the two corresponding positioning surfaces on the housing 22 can be used to easily achieve the primary positioning of the fiber optic connector 1. The outer flange 11 is inserted into the positioning groove 221, thereby performing secondary positioning of the fiber optic connector 1. Furthermore, the outer flange 11 has a notch 111, which matches the protrusion 2211 in the positioning groove 221. This allows for angular positioning of the fiber optic connector during secondary positioning, effectively preventing a 180° assembly error during insertion. Through this positioning method, the fiber optic connector 1 can be accurately positioned on the housing 22, preventing rotation or offset and improving the installation accuracy of the fiber optic connector 1.

[0060] The angle corresponding to the notch 111 can be 30-60°. Similarly, the protrusion 2211 in the positioning groove 221 is a triangular protrusion with an angle of 30-60°. This notch design ensures that when the protrusion in the positioning groove is engaged, the angle of the arc connector body is positioned in the optical module housing, and no angle deflection occurs.

[0061] In addition, fiber optic connector 1 is fixedly connected to fiber optic 21. When fiber optic connector 1 is connected to fiber optic plug, the fiber optic cable inside the fiber optic plug contacts the fiber optic cable 21 in fiber optic connector 1, so that the optical signal can be transmitted to the optical devices in optical module 2, such as PLC (Planar Lightwave Circuit), AWG (Arrayed Waveguide Grating), DEMUX (Demultiplexer), and other optical devices.

[0062] It should be noted that the two first positioning surfaces 12 or the two second positioning surfaces 222 can be parallel or form a certain angle, and the present invention does not limit this.

[0063] In this embodiment, the optical fiber 21 includes, but is not limited to, multi-core optical fiber, polarization-maintaining optical fiber, hollow-core optical fiber, and other optical fibers used to transmit optical signals with different performance or polarized light in a specific direction. In the above application, the optical fiber 21 located in the optical fiber connector 1 needs to be aligned at the fiber core angle when coupled with the optical fiber in the optical fiber plug. When the optical fiber 21 in the optical fiber connector 1 deflects at an angle with the optical fiber in the optical fiber plug, it will lead to defects such as signal transmission failure or large signal attenuation.

[0064] It should be noted that a multi-core fiber is a fiber with multiple cores in a common cladding region. Each core is independent and can be used to transmit optical signals with different performance characteristics.

[0065] Figure 3 This is a first view of the housing provided in an embodiment of the present invention. Figure 4 This is a second view of the housing provided in an embodiment of the present invention. Figure 5 This is a partially enlarged view of the housing provided in an embodiment of the present invention. Figure 6 This is a first view of the shell cover provided in an embodiment of the present invention. Figure 7 This is a second view of the shell cover provided in an embodiment of the present invention, in conjunction with... Figures 3-7 As shown, the housing 22 includes a cover 223 and a base 224, which are detachably connected to clamp the fiber optic connector 1. The base 224 has a boss 2241. It should be noted that the boss 2241 is located on the side of the base 224 near the guide hole 2249 of the first radiation baffle 2243. Figure 5 The protrusion on the left side of the first radiation baffle 2243, the cavity for accommodating the optical device is located on the side of the first radiation baffle 2243 of the housing 224 away from the guide hole 2249. Figure 5The boss 2241 (on the right side of the first radiation baffle 2243) is higher than the bottom surface of the receiving cavity. This higher elevation helps prevent EMI radiation and also prevents the groove or positioning slot 221 from affecting the structural strength of the housing 224. The boss 2241 has an arc-shaped groove 2281 (for accommodating the second body 14), a positioning slot 221, a first arc-shaped retaining groove 2242, and a receiving slot 2282 (for accommodating the fiber optic plug, into which the first body 13 is inserted). The receiving slot 2282 communicates with the guide hole 2249.

[0066] It should be noted that the number of arc-shaped grooves 2281, positioning grooves 221, first arc-shaped slots 2242, and receiving grooves 2282 can all be two, that is, two arc-shaped grooves 2281, two positioning grooves 221, two first arc-shaped slots 2242, and two receiving grooves 2282 can be symmetrically arranged along the boss 2241. The arc-shaped grooves 2281, positioning grooves 221, first arc-shaped slots 2242, and receiving grooves 2282 can also be designed according to the structure of the fiber optic connectors installed within them, such as... Figure 5 The present invention does not limit this.

[0067] It should be noted that the guide hole 2249 is used to connect to the fiber optic plug. The guide hole 2249 can be used to connect different types of fiber optic plugs such as LC (Lucent Connector), FC (Ferrule Connector), ST (Straight Tip), and SC (Square Connector). The corresponding guide hole 2249 is also matched with the fiber optic plug. This invention does not limit this.

[0068] The first radiation baffle 2243 is a sheet-like structure perpendicular to the optical fiber axis and disposed on the housing 224. A corresponding second radiation baffle 2232 is disposed on the housing cover 223, also a sheet-like structure perpendicular to the optical fiber axis. The first radiation baffle 2243 isolates the boss 2241 from the optical component housing cavity. Specifically, when the housing 224 and housing cover 223 are engaged, the first radiation baffle 2243 and the second radiation baffle 2232 engage to isolate the optical fiber connector from the optical component.

[0069] In the above embodiments, by setting the housing 22 to be detachably connected to the housing cover 223 and the housing base 224, clamping protection of the fiber optic connector 1 can be achieved, and maintenance can be facilitated.

[0070] For example, the housing 224 has a guide hole 2249 for guiding the fiber optic plug. In the radial section of the guide hole 2249, the projection of the fiber optic connector 1 coincides with the projection of the guide hole 2249. Therefore, by inserting the fiber optic plug into the guide hole 2249, the fiber optic plug can be guided, allowing the fiber optic plug to be easily mated with the fiber optic connector 1.

[0071] Furthermore, a receiving cavity for accommodating the optoelectronic component is formed between the cover 223 and the base 224. The receiving cavity for the optoelectronic component and the fiber optic connector 1 are located on opposite sides of the first radiation baffle 2243. The receiving cavity for the optoelectronic component can protect the optoelectronic component and prevent it from being damaged.

[0072] It should be noted that optoelectronic components can be PCB boards and optical devices as described above.

[0073] See also Figure 3-7 The boss 2241 is provided with a positioning groove 221 and a first arc-shaped slot 2242 in sequence. The plane of the arc of the first arc-shaped slot 2242 is perpendicular to the optical fiber axis and parallel to the plane of the positioning groove 221. The two opposite sides of the first arc-shaped slot 2242 are second positioning surfaces 222 (the first arc-shaped slot 2242 and the two second positioning surfaces 222 are regarded as a groove as a whole), and the positioning groove 221 is located on the boss 2241. The first arc-shaped slot 2242 matches the outer periphery of the connector body 10, and the cover 223 has a second arc-shaped slot 2231. The second arc-shaped slot 2231 and the first arc-shaped slot 2242 form a clamping space for accommodating the connector body 10. The contour of this clamping space matches the contour of the connector body 10, ensuring the reliability and stability of the optical fiber connector 1 during the clamping and accommodating process.

[0074] A protrusion 2211 is provided inside the positioning groove 221, and the height of the protrusion 2211 is lower than that of the first arc-shaped slot 2242. When the fiber optic connector 1 is installed, the outer flange 11 first contacts the positioning groove 221 to achieve positioning of the fiber optic connector 1 along the length direction of the optical module. Then, the first positioning surface 12 and the second positioning surface 222 are aligned to achieve positioning of the fiber optic connector 1 along the width direction of the optical module. As the fiber optic connector 1 continues to move toward the housing 224, the protrusion 2211 and the notch 111 cooperate to guide the fiber optic connector 1. Finally, the notch 111 and the protrusion 2211 are in complete contact to achieve positioning of the fiber optic connector 1 along the optical fiber axis rotation angle, thus completing the precise positioning of the fiber optic connector 1 on the housing 224, avoiding rotation and offset of the fiber optic connector 1, and improving the installation accuracy of the fiber optic connector 1.

[0075] Furthermore, the housing 224 has a first radiation baffle 2243, and the side of the first radiation baffle 2243 facing the housing cover 223 has at least one first optical fiber recess 2280. A first arc-shaped slot 2242 and a second arc-shaped slot 2231 are coaxially arranged with the first optical fiber recess 2280, and a positioning groove 221 is located between the first arc-shaped slot 2242 and the first radiation baffle 2243. The first optical fiber recess 2280 can realize the recess of the optical fiber 21, so that the optical signal can be transmitted to the accommodating cavity through the optical fiber 21.

[0076] Similarly, the cover 223 has a second radiation baffle 2232. The side of the second radiation baffle 2232 facing away from the cover 223 is provided with a second fiber optic clearance port corresponding to the first fiber optic clearance port 2280. The second radiation baffle 2232 and the first radiation baffle 2243 are staggered to adjust the size of the fiber optic accommodating port formed by the first fiber optic clearance port 2280 and the second fiber optic clearance port.

[0077] In the above embodiment, the first radiation baffle 2243 and the second radiation baffle 2232 are staggered. That is, when the cover 223 is fitted with the base 224, one side of the second radiation baffle 2232 is in contact with one side of the first radiation baffle 2243, and the second radiation baffle 2232 is located near the optical component housing cavity. At the optical fiber recess, the staggered arrangement ensures that the outer diameter of the optical fiber housing is consistent with that of the optical fiber 21, preventing the optical fiber housing from being too large and affecting the EMI radiation protection. At non-optical fiber recess locations, the gap between the first radiation baffle 2243 and the second radiation baffle 2232 due to processing or assembly can be effectively avoided when the cover 223 is fitted with the base 224 (when the first radiation baffle 2243 and the second radiation baffle 2232 are staggered, the gap between them is zigzag-shaped), thereby improving the EMI radiation protection capability.

[0078] For example, the first fiber optic recess and the second fiber optic recess include a V-shaped guide structure. When the cover 223 and the base 224 are engaged, the V-shaped guide structure ensures that the fiber optic cable 21 follows the V-shaped guide structure until it enters the fiber optic receiving port formed by the engagement of the first fiber optic recess and the second fiber optic recess, thus preventing damage to the fiber optic cable 21 caused by the radiation baffle when the cover 223 and the base 224 are engaged.

[0079] In addition, the outer edge of the housing 224 has multiple spaced-apart radiation-shielding protrusions 2250, and the outer edge of the cover 223 has radiation-shielding grooves 2233. Radiation-shielding adhesive is inserted into the radiation-shielding grooves 2233, and the multiple radiation-shielding protrusions 2250 are inserted into the radiation-shielding grooves 2233 to compress the radiation-shielding adhesive. The radiation-shielding protrusions 2250 and the radiation-shielding adhesive are in contact through compression, eliminating assembly gaps and enhancing the EMI radiation protection effect.

[0080] For example, the boss 2241 is also provided with an EMI radiation shielding rib 2270, and the cover 223 is provided with an optical port shielding adhesive groove 2237. The optical port shielding adhesive groove 2237 is filled with electromagnetic shielding adhesive. The EMI radiation shielding rib 2270 is pressed and contacted with the electromagnetic shielding adhesive at this location to eliminate assembly gaps and further enhance the EMI radiation shielding effect.

[0081] For example, the cover 223 and the base 224 each have a plurality of spaced-apart first fins 2261 and second fins 2262, thereby increasing the contact area between the product and the air and improving heat dissipation performance. The base 224 has a positioning hole 2260, and the cover 223 has a positioning post 2234. The positioning post 2234 and the positioning hole 2260 are fitted together to improve assembly efficiency. The cover 223 also has a label slot 2235 and a threaded hole 2236. The label slot 2235 is used for attaching labels.

[0082] It should be noted that, in one implementation of the present invention, the outer flange 11 and the positioning groove 221, and the notch 111 and the protrusion 2211 can be clearance fits, which are considered coarse fits. The first positioning surface 12 and the second positioning surface 222 are interference fits, which are considered precise positioning. Therefore, during the insertion of the fiber optic connector 1 into the housing 224, the double fit between the protrusion 2211 and the notch 111, and between the positioning groove 221 and the outer flange 11, allows for a first coarse positioning of the fiber optic connector 1 on the boss 2241, followed by a second precise positioning through the fit between the first positioning surface 12 and the second positioning surface 222. This process of coarse positioning followed by precise positioning improves installation efficiency.

[0083] In this embodiment, the optical module 2 also includes an unlocking pull ring 225 (see...). Figure 8 The unlocking pull ring 225 is slidably arranged on the outer wall of the housing 224.

[0084] For example, the outer wall of the housing 224 has a limiting groove 2247, and the unlocking pull ring 225 has a limiting protrusion 2255, which is slidably inserted into the limiting groove 2247.

[0085] Specifically, the unlocking pull ring 225 includes a handle 2251, two connecting arms 2252, and two tongues 2253 connected in sequence. The two connecting arms 2252 are arranged in parallel and spaced apart, and the two ends of each connecting arm 2252 are respectively connected to the handle 2251 and the corresponding tongue 2253. The outer wall of the housing 224 has mounting grooves on both sides. The mounting grooves include a first mounting groove 2244 and a second mounting groove 2245. The outer diameter of the first mounting groove 2244 is larger than the outer diameter of the second mounting groove 2245. Each connecting arm 2252 is slidably inserted into the corresponding first mounting groove 2244, and the tongue 2253 is slidably inserted into the corresponding second mounting groove 2245.

[0086] In the above embodiment, after pulling the unlocking ring 225, the tongue 2253 will press the baffle on the inner wall of the CAGE outward, thereby releasing the baffle's restriction on the housing 224, and thus pulling out the entire optical module 2. When the unlocking ring 225 is not pulled, the baffle on the inner wall of the CAGE will be inserted into the first mounting slot 2244, abutting against the inner wall of the first mounting slot 2244. At this time, when the unlocking ring 225 is not pulled, the baffle on the inner wall of the CAGE will not be pressed outward, thus releasing its abutting effect on the inner wall of the first mounting slot 2244, and the entire optical module 2 will be locked in the CAGE. The CAGE is the housing of the interface component of the optical communication device, and has a slot for inserting the electrical connector of the optical module to connect the optical module and the connector in the CAGE.

[0087] Additionally, the outer wall of the housing 224 has a spring groove 2246, in which a spring is inserted. One end of the spring abuts against the inner wall of the spring groove 2246. The inner side of the connecting arm 2252 has a protrusion 2254, which is slidably inserted into the spring groove 2246, with the other end of the spring abutting against the protrusion. The spring serves to reset the unlocking pull ring 225, allowing the tongue 2253 to return to its initial position when the unlocking pull ring 225 is not subjected to tension.

[0088] For example, the housing 224 also has a guide groove 2248, which communicates with the spring groove 2246, so that the protrusion 2254 can be guided into the spring groove 2246.

[0089] This invention also provides a communication module, which includes an optical module 2 as described above and an optical fiber plug (not shown). The inner peripheral wall of the optical fiber plug has two spaced third positioning surfaces, each of which matches a corresponding first positioning surface 12 for precise insertion into the optical fiber connector 1.

[0090] In the above embodiment, when the fiber optic plug is mated with the fiber optic connector 1, the third positioning surface of the fiber optic plug abuts against the first positioning surface 12, and the two first positioning surfaces 12 of the fiber optic connector are located within the two third positioning surfaces and the first positioning surfaces 12 of the fiber optic plug. Through the cooperation between the third positioning surface on the fiber optic plug and the first positioning surface 12 of the fiber optic connector 1, precise matching of the fiber optic cable inside the fiber optic plug and the fiber optic cable 21 inside the fiber optic connector 1 can be achieved, thereby ensuring the conduction of the optical path between the fiber optic plug and the fiber optic connector 1 and avoiding signal failures caused by angular deviations between the fiber optic cable inside the fiber optic plug and the fiber optic cable 21 inside the fiber optic connector 1.

[0091] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An optical module, characterized in that, The optical module includes fiber optic connectors, optical fibers, and housings for multi-core optical fibers, polarization-maintaining optical fibers, and hollow-core optical fibers. The fiber optic connector includes a connector body, the outer peripheral wall of the connector body has an outer flange for insertion into a positioning groove of the housing, the outer flange has a notch, and the outer peripheral wall of the connector body has two spaced first positioning surfaces, each of which is used to mate with a corresponding second positioning surface on the housing. The notch is triangular, and the width of the notch gradually increases in the direction from the inner edge of the outer flange to the outer edge of the outer flange; The connector body is connected to the optical fiber; The housing has a positioning groove for inserting the outer flange and two spaced second positioning surfaces, each second positioning surface matching the corresponding first positioning surface for primary positioning of the fiber optic connector, and the positioning groove has a protrusion matching the notch for secondary positioning of the fiber optic connector. The housing includes a cover and a base, which are detachably connected to clamp the fiber optic connector. The base has a boss, and the positioning groove is located on the boss. The protrusion has a groove, and the two opposite sides of the groove are the second positioning surfaces. The bottom of the groove is a first arc-shaped slot that matches the outer periphery of the connector body. The height of the protrusion is lower than the first arc-shaped slot. The protrusion is used to guide the optical fiber connector and position it by rotating it along the optical fiber axis.

2. An optical module according to claim 1, characterized in that, The optical fiber is a multi-core optical fiber, a polarization-maintaining optical fiber, or a hollow optical fiber.

3. An optical module according to claim 1, characterized in that, The cover has a second arc-shaped groove, and the second arc-shaped groove and the groove form a clamping space for accommodating the connector body.

4. An optical module according to claim 3, characterized in that, The housing has a first radiation baffle, and the side of the first radiation baffle facing the housing cover has at least one first optical fiber clearance opening. The first arc-shaped slot and the second arc-shaped slot are coaxially arranged with the first optical fiber clearance opening. The positioning groove is located between the first arc-shaped slot and the first radiation baffle.

5. An optical module according to claim 4, characterized in that, The shell cover has a second radiation baffle. The side of the second radiation baffle facing away from the shell cover is provided with a second fiber optic clearance port corresponding to the first fiber optic clearance port. The second radiation baffle and the first radiation baffle are staggered to adjust the size of the fiber optic receiving port formed by the first fiber optic clearance port and the second fiber optic clearance port.

6. An optical module according to claim 1, characterized in that, A receiving cavity for accommodating an optoelectronic component is formed between the housing cover and the housing base, and the receiving cavity is arranged opposite to the optical fiber connector.

7. An optical module according to claim 1, characterized in that, The angle corresponding to the notch is 30-60°.

8. An optical module according to claim 1, characterized in that, One end of each of the two first positioning surfaces extends to the end of the connector body away from the outer flange, and the other end of each of the two first positioning surfaces extends to the outer flange and connects with the outer flange.

9. An optical module according to claim 1, characterized in that, The connector body has a tapered surface that gradually decreases in size at the outer periphery of the end away from the outer flange.

10. A communication module, characterized in that, The communication module includes an optical module and an optical fiber plug as described in any one of claims 1-9. The optical fiber plug has two spaced third positioning surfaces on its inner peripheral wall, and each of the third positioning surfaces matches the corresponding second positioning surface to be precisely inserted into the optical fiber connector.

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