Optoelectronic hybrid mpo connector

Abstract

The utility model belongs to photoelectric integrated technical field especially relates to a kind of photoelectric composite MPO type connector.A kind of photoelectric composite MPO type connector, comprising: shell, shell includes front shell subassembly and with the detachable cooperation connection of rear shell subassembly;Front shell subassembly has front end cooperation surface and internal cavity;Optical fiber ferrule subassembly, set in the internal cavity of shell, optical fiber ferrule subassembly includes at least one multicore optical fiber ferrule, and multicore optical fiber ferrule has optical butt joint end face;Spring subassembly, set in the internal cavity of shell;And electrical connection subassembly, set in the internal cavity of shell, and electrical connection subassembly includes: at least two electrical butt joint terminal;And, at least one internal electrical conductor, its front end is electrically connected with at least one electrical butt joint terminal;At least one internal electrical wiring path arranged in the front shell subassembly and / or the rear shell subassembly interior, and the internal electrical conductor extends along the internal electrical wiring path.

Description

Technical Field

[0001] This utility model belongs to the field of optoelectronic integration technology, and in particular relates to an optoelectronic composite MPO type connector. Background Technology

[0002] With the rapid development of information technology, data centers, high-speed network communications, and emerging optoelectronic integrated systems are placing increasingly higher demands on interconnect technologies. In the field of optical communication, MPO (Multi-fiber Push-On) connectors, due to their ability to accommodate multiple optical fibers within a compact interface and achieve high-density, high-bandwidth optical signal transmission, have become the mainstream choice for 40G, 100G, and even higher-speed network cabling. Traditional MPO connectors focus on pure optical signal transmission, and their design and optimization mainly revolve around improving fiber alignment accuracy, reducing insertion and return loss, and enhancing insertion and removal reliability and installation density. Current improvements to MPO connectors are mostly concentrated on aspects such as the ease of male-female connector conversion, the management of internal spring force during maintenance to protect the optical fiber, or "push-on" designs for special installation scenarios such as narrow conduits. While these improvements enhance the performance or applicability of MPO fiber optic connectors in specific aspects, their essence remains the same: serving pure optical signal transmission.

[0003] However, in many modern applications, such as remote active optical module power supply, hybrid optoelectronic signal transmission between boards or devices, and the increasingly advanced silicon photonics integration, it is often necessary to simultaneously achieve high-density optical signal transmission and reliable electrical power or signal transmission on the same interconnect interface. Traditionally, optical and electrical connectors are deployed separately, or bulky, complex, and costly customized hybrid optoelectronic cables and connectors are used. This separate or non-standardized approach not only occupies valuable equipment space, increases wiring complexity and system cost, but may also pose challenges in signal integrity and system integration. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned shortcomings and provide an optoelectronic composite MPO connector.

[0005] Currently, standard MPO connectors and related improvements on the market generally lack mature solutions for effectively integrating multiple electrical connection paths within a compact MPO form factor. Their internal space is primarily designed for optical components such as optical fibers, ferrules, and springs. Introducing and reliably laying electrical conductors and achieving stable electrical contact without significantly increasing the form factor or sacrificing optical transmission performance presents numerous technical challenges, including internal space utilization, isolation and interference prevention between optical and electrical paths, reliability and durability of electrical connections, and manufacturability. Therefore, the technical problem this invention aims to solve is, given that existing MPO connectors are mainly used for pure optical transmission, how to effectively integrate electrical connection components—including electrical mating terminals, internal electrical conductors, and internal electrical wiring paths to accommodate these conductors—through innovative structural design, while maintaining or essentially maintaining the compact form factor and high-density optical connection capabilities of the MPO connector. This enables composite transmission of optical and electrical signals on the same MPO connector interface, meeting the needs of modern optoelectronic hybrid applications, simplifying system wiring, and improving integration.

[0006] A photoelectric composite MPO connector, comprising:

[0007] A housing, the housing including a front housing assembly and a rear housing assembly detachably connected thereto; the front housing assembly having a front mating surface and an internal cavity for accommodating internal components;

[0008] A fiber optic ferrule assembly is disposed in the internal cavity of the housing, the fiber optic ferrule assembly including at least one multi-core fiber ferrule, the multi-core fiber ferrule having an optical mating end face exposed to the front mating surface of the front housing assembly.

[0009] A spring assembly, disposed within the internal cavity of the housing, acts on the fiber optic ferrule assembly; and

[0010] An electrical connection assembly is disposed within an internal cavity of the housing, the electrical connection assembly comprising:

[0011] At least two electrical mating terminals, the contact portion of which is located on the front mating surface of the front housing assembly, are used to establish an electrical signal connection with an external mating connector;

[0012] In addition, at least one internal electrical conductor, the front end of which is electrically connected to at least one electrical mating terminal; and at least one internal electrical wiring path provided inside the front housing assembly and / or the rear housing assembly, the internal electrical conductor extending along the internal electrical wiring path.

[0013] Furthermore, the internal electrical wiring path is a wire groove integrally formed by injection molding on the inner wall of the front housing assembly and / or the inner wall of the rear housing assembly for accommodating and guiding the internal electrical conductor, for guiding and separating the internal electrical conductor as it extends from the front housing assembly to the rear housing assembly.

[0014] Furthermore, the rear housing assembly is provided with at least one integrated solder bath structure, and the rear end of the internal electrical conductor is electrically connected with the external conductor with low impedance within the solder bath structure.

[0015] Furthermore, the rear shell assembly includes at least two rear shell modules that can be spliced ​​together, and the rear shell modules are provided with rear shell splicing parts for positioning and fixing; the internal electrical conductor and optical fiber are housed in one or more of the rear shell modules and are connected to the front shell assembly.

[0016] Furthermore, the fiber optic ferrule assembly also includes at least two guide pins, which are exposed on the front mating surface together with the multi-core fiber optic ferrule; one end of the spring assembly abuts against the fiber optic ferrule assembly, and the other end abuts against the rear housing assembly.

[0017] Furthermore, a base is provided between the fiber optic ferrule assembly and the spring assembly. The base is fixedly connected to the multi-core fiber optic ferrule and is fixed in conjunction with the guide pin. The base is made of insulating material and is used to form electrical isolation between the spring assembly and the electrical connection assembly, and to provide a support surface for the spring assembly.

[0018] Furthermore, the front mating surface of the front housing assembly is provided with a connector key for engaging with the corresponding keyway of the mating connector; the electrical mating terminal is a flat copper contact piece, the arrangement of which is adapted to the size and interface standard of the front end of the MPO type connector.

[0019] Furthermore, the tail of the housing is provided with an integrally injection-molded tail sleeve, which covers the lead end of the optoelectronic composite cable and is connected to the rear housing assembly.

[0020] Furthermore, a clamp for clamping the optoelectronic composite cable is provided between the tail sheath and the rear shell assembly.

[0021] Furthermore, the MPO type connector includes a dust cap having a key that is adapted to the connector key on the front housing assembly; the dust cap also includes a traction portion and a spring-loaded structure for fixing to the front end of the front housing assembly.

[0022] The beneficial effects of this utility model are:

[0023] This invention provides a photoelectric composite MPO connector. By innovatively integrating electrical connection components into the traditional MPO connector structure, it solves the technical bottleneck of existing MPO connectors that can only transmit optical signals and cannot simultaneously transmit electrical power or electrical signals. By setting electrical mating terminals, internal electrical conductors, and internal electrical wiring paths spatially coordinated with the optical fiber transmission path inside the housing, it achieves the composite function of simultaneously transmitting high-density optical signals and multiple electrical signals / power on a single, compact MPO interface. This greatly improves the integration and flexibility of system design, and is particularly suitable for applications with strict space and wiring requirements, such as remote active optical module power supply and interconnection between photoelectric hybrid signal boards. Through the integration of optical and electrical paths, the system wiring complexity is significantly simplified, reducing the number and types of connectors required, thereby reducing the overall system cost and potential failure points. While maintaining or essentially maintaining the original compact shape and high-density optical connection advantages of MPO connectors, the addition of electrical connection capabilities improves the space utilization of the equipment and better compatibility with the existing MPO ecosystem. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of an MPO type connector;

[0025] Figure 2 Exploded view of an MPO type connector;

[0026] Figure 3 A schematic diagram showing the internal component configuration of an MPO type connector;

[0027] Figure 4 This is a schematic diagram of the back shell assembly structure of an MPO type connector;

[0028] Figure 5 This is a front view of the MPO type connector rear housing assembly;

[0029] Reference numerals: 1. MPO type connector; 10. Housing; 101. Front housing assembly; 102. Rear housing assembly; 1021. Cable tray; 1022. Solder tray structure; 1023. Rear housing module; 1024. Rear housing splice; 103. Front mating surface; 104. Internal cavity; 20. Fiber optic ferrule assembly; 201. Multi-core fiber optic ferrule; 202. Guide pin; 203. Connector key; 30. Spring assembly; 40. Electrical connection assembly; 401. Electrical mating terminal; 50. Base; 60. Tail sleeve; 70. Jacket; 80. Dust cap; 801. Key; 802. Traction part; 90. Fiber optic composite cable. Detailed Implementation

[0030] The following detailed description, in conjunction with embodiments, further illustrates the optoelectronic composite MPO connector of this utility model. For the sake of simplicity, this document cannot exhaustively list all alternative technical features and implementation schemes included in this utility model. Therefore, those skilled in the art should understand that any technical feature and implementation scheme within this embodiment does not limit the scope of protection of this utility model. The scope of protection includes all alternative technical features and implementation schemes adopted by those skilled in the art without inventive effort. Specifically, any implementation scheme obtained by replacing any technical feature in this utility model or combining any two or more technical features provided by this utility model should be within the scope of protection of this utility model.

[0031] This embodiment provides an optoelectronic composite MPO type connector 1, such as... Figures 1-5 As shown, it includes:

[0032] Housing 10, housing 10 includes a front housing assembly 101 and a rear housing assembly 102 detachably connected thereto; the front housing assembly 101 has a front mating surface 103 and an internal cavity 104 for accommodating internal components.

[0033] The fiber optic ferrule assembly 20 is disposed in the internal cavity 104 of the housing 10. The fiber optic ferrule assembly 20 includes at least one multi-core fiber optic ferrule 201. The multi-core fiber optic ferrule 201 has an optical mating end face exposed to the front mating surface 103 of the front housing assembly 101. The fiber optic ferrule assembly 20 is used to establish optical signal transmission.

[0034] A spring assembly 30 is disposed within the internal cavity 104 of the housing 10. The spring assembly 30 acts on the fiber optic ferrule assembly 20 to provide pre-force to push the optical mating end face of the fiber optic ferrule assembly 20 toward the front mating surface 103; and

[0035] Electrical connection assembly 40 is disposed in the internal cavity 104 of housing 10, and electrical connection assembly 40 includes:

[0036] At least two electrical mating terminals 401, the contact portion of which is located on the front mating surface 103 of the front housing assembly 101, are used to establish an electrical signal connection with an external mating connector;

[0037] In addition, at least one internal electrical conductor, the front end of which is electrically connected to at least one electrical mating terminal 401; and at least one internal electrical wiring path provided inside the front housing assembly 101 and / or the rear housing assembly 102, the internal electrical conductor extending along the internal electrical wiring path.

[0038] In one specific embodiment, the housing 10 of the optoelectronic composite MPO connector 1 is composed of a front housing assembly 101 and a rear housing assembly 102, both of which are made of high-strength, dimensionally stable engineering plastics through injection molding. The front housing assembly 101 and the rear housing assembly 102 are detachably connected through a precision snap-fit ​​structure or threaded structure on their mating surfaces to form a closed housing 10. The front mating surface 103 of the front housing assembly 101 is designed as a plane conforming to the MPO / MTP interface standard, and its internal cavity 104 is optimized to compactly accommodate some components of the fiber optic ferrule assembly 20, the spring assembly 30, and the electrical connection assembly 40. The core of the fiber optic ferrule assembly 20 is a multi-core MT-type ceramic or high-performance polymer ferrule, and its front end, with a precision-polished optical mating face, is accurately positioned at the opening of the front mating surface 103 of the front housing assembly 101. The spring assembly 30 is a metal helical compression spring installed behind the fiber optic ferrule assembly 20. It continuously applies a preset forward pressure to the fiber optic ferrule assembly 20 to ensure good contact between the fiber end face and the mating connector. The electrical connection assembly 40 includes at least two pairs (e.g., four in total) of flat, sheet-like electrical mating terminals 401 made of highly conductive metal, stamped and surface-treated, located on the front mating surface 103 of the front housing assembly 101 and on both sides of the fiber optic ferrule. The internal electrical conductors connected to these mating terminals are multi-strand fine-gauge wires. These wires extend along the inner walls of the front housing assembly 101 and the rear housing assembly 102 through pre-set microgrooves (internal electrical wiring paths) that maintain a safe insulating distance from the central fiber path to the connector tail.

[0039] In some embodiments, the internal electrical wiring path is a wire groove 1021 integrally formed by injection molding on the inner wall of the front housing assembly 101 and / or the inner wall of the rear housing assembly 102 for accommodating and guiding internal electrical conductors, for guiding and separating the internal electrical conductors as they extend from the front housing assembly 101 to the rear housing assembly 102, so as to maintain the spacing from the optical fiber path.

[0040] Based on the above specific embodiments, the internal electrical wiring pathways, i.e., the wire grooves 1021, are integrally formed directly onto the inner wall of the components through precision-machined cavity features in the injection molds of the front housing assembly 101 and the rear housing assembly 102. The cross-sectional shape of these wire grooves 1021 can be rectangular, semi-circular, or other shapes suitable for accommodating wires, and their dimensions are sufficient to stably accommodate the selected internal electrical conductors. These wire grooves 1021 begin near the front electrical mating terminal 401, extend rearward, and smoothly transition to the corresponding wire groove 1021 on the inner wall of the rear housing assembly 102 at the mating surface of the front housing assembly 101 and the rear housing assembly 102. The wire grooves 1021 within the rear housing assembly 102 continue to guide the internal electrical conductors and may be designed with curved paths to adapt to the internal structure of the rear housing assembly 102, ultimately leading the internal electrical conductors to the electrical connection area at the tail of the connector. The inner surface of the wire grooves 1021 is smooth to reduce friction during wire threading.

[0041] In some embodiments, the rear housing assembly 102 is provided with at least one integrated solder bath structure, and the rear end of the internal electrical conductor is electrically connected to the external conductor with low impedance within the solder bath structure by a low-temperature soft soldering process. The solder bath structure is used to avoid thermal damage to the adjacent fiber optic ferrule assembly 20 and optical fiber.

[0042] Based on the above specific embodiments, at the tail of the rear housing assembly 102, corresponding to the end of each internal electrical wiring path (wire groove 1021), one or more recessed solder bath structures with flat bottoms are integrally formed. Each solder bath is sized to accommodate the rear end of the internal electrical conductor and the end of the external introduced conductor. After the insulation of the rear end of the internal electrical conductor is stripped, it is placed together with the stripped end of the corresponding external conductor in the introduced optoelectronic composite cable 90 into the corresponding solder bath. After applying a small amount of low-temperature solder paste, a soft solder connection is completed using localized rapid heating (such as laser welding or precision hot air welding) to form a low-impedance electrical path. The plastic material surrounding the solder bath has certain thermal shock resistance, and the welding process parameters (such as temperature and time) are precisely controlled to prevent excessive heat conduction to the fiber optic ferrule assembly 20, thereby protecting the fiber optic performance from being affected.

[0043] In some embodiments, the rear shell assembly 102 includes at least two rear shell modules 1023 that can be spliced ​​together, and a rear shell splicing member 1024 for positioning and fixing is provided between the rear shell modules 1023. The internal electrical conductors and optical fibers are housed in one or more of the rear shell modules and are connected to the front shell assembly 101.

[0044] Based on the above specific embodiments, the rear shell assembly 102 includes two rear shell modules 1023. The mating edges of these two modules are provided with rear shell splicing parts 1024 for positioning and fixing; for example, one module has a mating tenon structure or snap-fit ​​feature on its edge. During assembly, the fiber optic ferrule assembly 20, spring assembly 30, and internal electrical conductors with their front ends connected to the electrical mating terminals 401, which have already been terminated with optical fibers, are initially installed into the front shell assembly 101. Then, the internal electrical conductors and optical fiber pigtails are respectively laid into the corresponding conductor grooves 1021 and optical fiber receiving areas of the lower rear shell module. Subsequently, the upper and lower rear shell modules are spliced ​​and fixed together using the rear shell splicing parts 1024 to form a basically closed rear assembly, which is then connected to the front shell assembly 101 by snap-fits or screws.

[0045] In some embodiments, the fiber optic ferrule assembly 20 further includes at least two guide pins 202, which are exposed together with the multi-core fiber optic ferrule 201 on the front mating surface 103; one end of the spring assembly 30 abuts against the fiber optic ferrule assembly 20 and the other end abuts against the rear housing assembly 102.

[0046] Based on the above specific embodiments, the fiber optic ferrule assembly 20 includes an MT-type multi-core ferrule, on both sides of its front end face, two precision metal guide pins 202 (when the connector is male), or precision guide holes for accommodating the guide pins 202 of the mating connector (when the connector is female). These guide pins 202 or guide holes, together with the array of multi-core optical fibers, are exposed on the front mating surface 103 of the front housing assembly 101. The spring assembly 30 is a metal helical compression spring, the front end of which abuts against an annular step at the rear of the fiber optic ferrule assembly 20 or a base 50 linked thereto, and the rear end of the spring abuts against a mating support surface formed inside the rear housing assembly 102.

[0047] In some embodiments, a base 50 is further provided between the fiber optic ferrule assembly 20 and the spring assembly 30. The base 50 is fixedly connected to the multi-core fiber optic ferrule 201 and is fixed in conjunction with the guide pin 202. The base 50 is made of insulating material and is used to form electrical isolation between the spring assembly 30 and the electrical connection assembly 40, and to provide a stable support surface for the spring assembly 30.

[0048] Based on the above specific embodiments, an additional base 50, injection-molded from a high-performance insulating polymer material, is provided between the fiber optic ferrule assembly 20 and the spring assembly 30. The front end of the base 50 is fixedly connected to the rear end of the multi-core fiber optic ferrule 201 by mating or bonding. The base 50 has two through holes or grooves corresponding to the positions of the guide pins 202 (or guide holes), used for alignment with the guide pins 202 (or guide holes) during assembly and providing additional support or restraint. The structural design of the base 50 ensures reliable electrical insulation between the metal spring assembly 30 and other live parts of the potentially adjacent internal electrical conductors or electrical connection assemblies 40, and provides a uniform and stable support surface for the front end of the spring assembly 30.

[0049] In some embodiments, a connector key 203 is provided on the front mating surface 103 of the front housing assembly 101 for mating with the corresponding keyway of the mating connector; the electrical mating terminal 401 is a flat copper contact piece, the arrangement of which is adapted to the size and interface standard of the front end of the MPO type connector 1.

[0050] Based on the above specific embodiments, a rectangular protrusion or groove conforming to the MPO / MTP standard is integrally injection molded at a specific position (usually the top center) on the front mating surface 103 of the front shell assembly 101, serving as the connector Key 203. The electrical mating terminals 401 are thin metal sheets with good elasticity and conductivity, formed into a flat strip shape by precision stamping. Their front contact portions undergo surface treatment (such as gold plating) to improve conductivity and corrosion resistance. These contact pieces are arranged parallel to each other on both sides of the fiber optic ferrule, and their size, spacing, and position are compatible with the compact spatial layout of the front end of the MPO type connector 1 and related interface standards to ensure reliable, low-impedance contact with the corresponding electrodes on the mating connector.

[0051] In some embodiments, the tail of the housing 10 is provided with an integrally injection-molded tail sleeve 60, which covers the lead end of the optoelectronic composite cable 90 and is connected to the rear housing assembly 102.

[0052] Based on the above specific embodiments, the tail end of the housing 10 is integrally injection molded with a tail sheath 60 made of a flexible polymer material (such as thermoplastic elastomer). The front end of the tail sheath 60 is tightly connected to the tail end of the rear housing assembly 102 through interference fit, snap-fit ​​structure, or secondary injection molding. The tail sheath 60 gradually tapers rearward, forming a flexible stress-relieving structure of a certain length, which tightly covers the outer sheath of the introduced optoelectronic composite cable 90 to prevent the cable from being damaged due to excessive bending at the connector outlet and to provide a certain degree of dust and water resistance.

[0053] In some embodiments, a clamp 70 is provided between the tail sheath 60 and the rear housing assembly 102 for clamping the optoelectronic composite cable 90 to provide mechanical fixation and stress relief.

[0054] Based on the above specific embodiments, inside the tail sheath 60, near the area where it connects to the rear housing assembly 102, a cylindrical or C-shaped jacket 70 made of metal (such as copper alloy or stainless steel) is pre-placed or fitted during assembly. After the outermost sheath is removed, the reinforcing elements of the optoelectronic composite cable 90 (such as aramid fiber or other high-strength fibers) are folded back and evenly distributed around the outer periphery of the inner sheath or shielding layer of the cable. Then, the cable, along with the folded reinforcing elements, is inserted into the jacket 70. Finally, a dedicated crimping tool is used to radially crimp the corresponding position of the jacket 70 outside the tail sheath 60, causing the jacket 70 and the tail sheath 60 material to undergo plastic deformation, thereby firmly clamping the cable within the connector and providing sufficient mechanical strength and pull-out resistance.

[0055] In some embodiments, the MPO type connector 1 includes a dust cap 80 having a Key 801 adapted to the connector Key 203 on the front housing assembly 101; the dust cap 80 also includes a pull portion 802 for easy insertion and removal, and a spring wing structure for fixing to the front end of the front housing assembly 101.

[0056] Based on the above specific embodiments, the optoelectronic composite MPO connector 1 is equipped with a dust cap 80 injection molded from a transparent or semi-transparent polymer material. The insertion end of the dust cap 80 has a concave keyway or protrusion that precisely matches the connector's key 203, serving as its key 801, ensuring that the dust cap 80 can only be inserted in the correct orientation. One or more inwardly curved, elastic cantilever beams or protrusions are integrally formed on each side wall of the dust cap 80 as spring-loaded structures. When the dust cap 80 is inserted into the front mating surface 103 of the front housing assembly 101, the spring-loaded structures will engage with corresponding shallow grooves on the side walls of the front housing assembly 101 or temporarily fix the dust cap 80 through friction with the inner wall. The top or side of the dust cap 80 has a flat extension or a perforated structure for easy gripping by the user, serving as a traction part 802 for convenient insertion and removal.

[0057] For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations, but obvious variations or modifications derived therefrom are still within the scope of protection of the claims of this invention.

Claims

1. A photoelectric composite MPO type connector, characterized in that, include: A housing, the housing comprising a front housing assembly and a rear housing assembly detachably connected thereto; The front shell assembly has a front mating surface and an internal cavity for accommodating internal components; A fiber optic ferrule assembly is disposed in the internal cavity of the housing, the fiber optic ferrule assembly including at least one multi-core fiber ferrule, the multi-core fiber ferrule having an optical mating end face exposed to the front mating surface of the front housing assembly. A spring assembly is disposed in the internal cavity of the housing, and the spring assembly acts on the optical fiber ferrule assembly; as well as An electrical connection assembly is disposed within an internal cavity of the housing, the electrical connection assembly comprising: At least two electrical mating terminals, the contact portion of which is located on the front mating surface of the front housing assembly, are used to establish an electrical signal connection with an external mating connector; In addition, at least one internal electrical conductor, the front end of which is electrically connected to at least one electrical mating terminal; and at least one internal electrical wiring path provided inside the front housing assembly and / or the rear housing assembly, the internal electrical conductor extending along the internal electrical wiring path.

2. The optoelectronic composite MPO connector according to claim 1, characterized in that, The internal electrical wiring path is a wire groove integrally formed by injection molding on the inner wall of the front housing assembly and / or the inner wall of the rear housing assembly, for accommodating and guiding the internal electrical conductor, for guiding and separating the internal electrical conductor as it extends from the front housing assembly to the rear housing assembly.

3. The optoelectronic composite MPO connector according to claim 2, characterized in that, The rear housing assembly has at least one integrated solder bath structure, and the rear end of the internal electrical conductor is electrically connected to the external conductor with low impedance within the solder bath structure.

4. The optoelectronic composite MPO connector according to claim 3, characterized in that, The rear shell assembly includes at least two rear shell modules that can be spliced ​​together, and a rear shell splicing piece for positioning and fixing is provided between the rear shell modules; the internal electrical conductor and optical fiber are housed in one or more of the rear shell modules and are connected to the front shell assembly.

5. The optoelectronic composite MPO connector according to any one of claims 1 to 4, characterized in that, The fiber optic ferrule assembly also includes at least two guide pins, which are exposed on the front mating surface together with the multi-core fiber optic ferrule; one end of the spring assembly abuts against the fiber optic ferrule assembly, and the other end abuts against the rear housing assembly.

6. The optoelectronic composite MPO connector according to claim 5, characterized in that, A base is also provided between the fiber optic ferrule assembly and the spring assembly. The base is fixedly connected to the multi-core fiber optic ferrule and is fixed in conjunction with the guide pin. The base is made of insulating material and is used to form electrical isolation between the spring assembly and the electrical connection assembly, and to provide a support surface for the spring assembly.

7. The optoelectronic composite MPO connector according to claim 5, characterized in that, The front housing assembly has a connector key on its front mating surface for engaging with the corresponding keyway of the mating connector; the electrical mating terminals are flat copper contact pieces whose arrangement is adapted to the size and interface standard of the front end of the MPO type connector.

8. The optoelectronic composite MPO connector according to claim 5, characterized in that, The tail of the housing is provided with an integrally injection-molded tail sleeve, which covers the lead end of the optoelectronic composite cable and is connected to the rear housing assembly.

9. The optoelectronic composite MPO connector according to claim 8, characterized in that, A clamp for clamping the optoelectronic composite cable is provided between the tail sheath and the rear shell assembly.

10. The optoelectronic composite MPO connector according to claim 7, characterized in that, The MPO type connector includes a dust cap having a key that is compatible with the connector key on the front housing assembly; the dust cap also includes a traction portion and a spring-loaded structure for fixing to the front end of the front housing assembly.

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