MT-FA with detachable MPO and coupling process

Abstract

The invention provides an MT-FA with a detachable MPO and a coupling technology, the MT-FA with the detachable MPO comprises an MPO connector, a transmitting end FA assembly and a receiving end FA assembly, and the MPO connector comprises a light transmitting sub-module, a light receiving sub-module and a detachable connecting structure; the transmitting end FA assembly and the receiving end FA assembly are respectively connected with the optical transmitting sub-module and the optical receiving sub-module through optical fibers. According to the scheme, the production of the transmitting end and the receiving end is completely separated from the coupling process, so that the problem that one end of the MT-FA is always in an active state due to successive processes of ROSA, TOSA and the like in the actual production can be solved in an auxiliary manner, and the problem that a gold wire of a device is damaged and the device level is poor can be solved; the TX FA and the RX FA can be respectively and independently coupled to corresponding processes by disassembling the MPO connector, so that the damage to the end surfaces of the gold wire and the optical fiber caused by the suspension of the other one when one is coupled is avoided.

Description

Technical Field

[0001] The present invention relates to the field of optical communication technology, and in particular to an MT-FA with a detachable MPO and a coupling process. Background Art

[0002] To develop the surface emitting array VCSEL chip and the light receiving PIN chip into parallel transmitting and receiving modules, a parallel fiber array assembly with a standard MPO interface is required. The fiber array assembly not only requires high positioning accuracy of each optical fiber, but also requires a 45° bare optical connector at one end of the optical fiber to be directly coupled with the surface emitting laser array VCSEL array and the light receiving PIN array, while the other end needs to be a 1×N standard MPO interface, which is coupled with the parallel optical fiber microstrip with a 1×N standard MPO interface to transmit each optical channel information of the parallel transmitting and receiving module.

[0003] For the DR module of the MPO optical port solution, the optical port of the internal device is an MT structure. At present, the MT-FA with a standard MPO interface is connected to the transmitter FA (TX FA) and the receiver FA (RX FA) respectively, which has many inconveniences in actual production: (1) Regardless of whether the TX FA or the RX FA is coupled first, the other one will always be in an active state, making the fiber end face of the other one easy to be dirty and damaged; (2) The TX FA and the RX FA are connected to the same MT. During the entire device process, if one of them has a problem, the entire component needs to be reworked, resulting in increased manufacturing costs. Summary of the invention

[0004] Based on the above problems in the prior art, the present invention aims to solve the technical problem that in the prior art MT-FA with a standard MPO interface, the TX FA and the RX FA are connected to the same MT, which increases the manufacturing cost and affects the device performance.

[0005] The present invention provides an MT-FA with a detachable MPO, comprising:

[0006] The MPO connector comprises an optical transmitting submodule, an optical receiving submodule and a detachable connection structure, wherein the optical transmitting submodule and the optical receiving submodule are detachably connected as a whole through the detachable connection structure;

[0007] The transmitting end FA component and the receiving end FA component are connected to the optical transmitting submodule and the optical receiving submodule respectively through optical fibers.

[0008] According to an embodiment of the present invention, the detachable connection structure comprises:

[0009] A fixing block fixedly arranged on the light receiving sub-module, wherein the fixing block is provided with a slot;

[0010] A fixing bar is fixedly arranged on the optical emission sub-module, and the shape of the fixing bar matches the shape of the slot.

[0011] According to one embodiment of the present invention, two fixing blocks are provided on the optical receiving sub-module and are distributed on both sides of the optical receiving sub-module, and the slots are provided on the fixing blocks; two fixing bars are provided on the optical transmitting sub-module and are distributed on both sides of the optical transmitting sub-module.

[0012] According to one embodiment of the present invention, the MPO connector also includes a connecting frame for connecting to an MPO adapter, and the connecting frame is provided with a connecting structure matching the MPO adapter; the optical transmitting sub-module and the optical receiving sub-module are detachably arranged on the connecting frame.

[0013] According to an embodiment of the present invention, a receiving groove is formed at one end of the connection frame away from the transmitting end FA assembly or the receiving end FA assembly, and the optical transmitting sub-module and the optical receiving sub-module are placed in the receiving groove.

[0014] According to an embodiment of the present invention, the MPO connector further includes two PIN pins, and the two PIN pins pass through the optical transmitting sub-module and the optical receiving sub-module respectively.

[0015] According to an embodiment of the present invention, through holes are opened on the side wall of the accommodating groove at positions corresponding to the two PIN pins, and the two PIN pins penetrate into the optical transmitting sub-module and the optical receiving sub-module respectively through the corresponding through holes.

[0016] According to one embodiment of the present invention, the MPO connector also includes two fiber combing grooves respectively fixedly connected to the ends of the optical transmitting submodule and the optical receiving submodule, and the transmitting end FA component and the receiving end FA component are respectively connected to the two fiber combing grooves through optical fibers.

[0017] According to an embodiment of the present invention, a clearance groove is provided on the connecting frame at a position corresponding to the two fiber combing grooves.

[0018] The present invention also provides a coupling process of MT-FA, which is implemented based on the MT-FA with detachable MPO, and includes the following steps:

[0019] Respectively coupling the transmitting end FA component and the receiving end FA component with the photoelectric conversion chip on the PCB board;

[0020] Connecting the optical transmitting submodule and the optical receiving submodule via a detachable connecting structure to assemble and form an MPO connector;

[0021] Connect the MPO connector to the external fiber optic patch cord, or connect the MPO connector to the MPO adapter, and then connect the MPO adapter to the fiber optic patch cord.

[0022] The MT-FA with a detachable MPO and the coupling process provided by the present invention have the following beneficial effects:

[0023] This solution can separate the MT-FA into an independent optical transmitter submodule assembly and an optical receiver submodule assembly by disassembling the MPO connector, so that when this solution is used in the DR series device process, the production and coupling processes of the transmitter and the receiver are completely separated, thereby avoiding the problem in the prior art that no matter which of the integrated MT-FAs is coupled first, the other one is always in an active state, making the fiber end face of the other one easy to get dirty and damaged, and if one of them has a problem, the entire assembly needs to be reworked; at the same time, this solution can support the disassembly of the MT-FA assembly without damaging the optical fiber or optical path of the transmitter or receiver, so as to replace the damaged optical transmitter submodule or optical receiver submodule. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a structural schematic diagram of an MT-FA with a detachable MPO provided by an embodiment of the present invention;

[0026] Figure 2 is a schematic structural diagram of an optical transmitting submodule and an optical receiving submodule connected via a detachable connecting structure in an embodiment of the present invention;

[0027] Figure 3 is a schematic structural diagram of a connecting frame in an embodiment of the present invention;

[0028] Figure 4 It is a structural diagram of an MPO adapter in the prior art;

[0029] Figure 5 is a schematic diagram of the structure after the MPO connector and the MPO adapter are connected in an embodiment of the present invention;

[0030] Figure 6 It is a flowchart of the steps of a coupling process of an MT-FA with a detachable MPO provided in the first embodiment of the present invention;

[0031] Figure 7It is a flowchart of the steps of a coupling process of an MT-FA with a detachable MPO provided in the second embodiment of the present invention;

[0032] Figure markings: 1-MPO connector; 11-optical transmitting submodule; 12-optical receiving submodule; 13-detachable connecting structure; 131-fixing block; 1310-slot; 132-fixing bar; 14-connecting frame; 140-connecting structure; 141-accommodating groove; 142-through hole; 143-yield groove; 15-PIN needle; 16-fiber combing groove; 2-transmitting end FA assembly; 3-receiving end FA assembly; 4-MPO adapter; 40-elastic buckle. DETAILED DESCRIPTION

[0033] The following descriptions of the embodiments refer to the attached drawings to illustrate specific embodiments in which the present invention can be implemented.

[0034] The present invention provides a MT-FA with a detachable MPO, the structure of which is as follows: Figure 1 As shown, it includes an MPO connector 1, a transmitting end FA component 2 and a receiving end FA component 3, wherein the MPO connector 1 includes a transmitting optical submodule (TOSA) 11, a receiving optical submodule (ROSA) 12 and a detachable connection structure 13, and the transmitting optical submodule 11 and the receiving optical submodule 12 are detachably connected as a whole through the detachable connection structure 13; the transmitting end FA component 2 and the receiving end FA component 3 are respectively connected to the transmitting optical submodule 11 and the receiving optical submodule 12 through optical fibers.

[0035] The present invention provides an MT-FA with a detachable MPO, which can separate the MT-FA into an independent optical transmission submodule assembly (referring to an assembly structure formed by a transmitting end FA component 2 and an optical transmission submodule 11 connected by optical fibers) and an optical receiving submodule assembly (referring to an assembly structure formed by a receiving end FA component 3 and an optical receiving submodule 12 connected by optical fibers) by disassembling an MPO connector, so that when the present solution is used in a DR series device process, the production and coupling processes of the transmitting end and the receiving end are completely separated, thereby avoiding the problem in the prior art that the one-piece MT-FA, regardless of whether the TX FA or the RX FA is coupled first, causes the other to be always in an active state, making the optical fiber end face of the other easily dirty and damaged, and the situation that if one of them has a problem, the entire assembly needs to be reworked; at the same time, the present solution can support the disassembly of the MT-FA assembly without damaging the optical fiber or optical path of the transmitting end or the receiving end, so as to replace the damaged optical transmission submodule 11 or the optical receiving submodule 12.

[0036] like Figure 2The figure is a schematic diagram of the structure after the optical transmitting submodule 11 and the optical receiving submodule 12 are connected by a detachable connecting structure 13 in an embodiment of the present invention. Specifically, the detachable connecting structure 13 includes a fixing block 131 fixedly arranged on the optical receiving submodule 12 and a fixing bar 132 fixedly arranged on the optical transmitting submodule 11, wherein the fixing block 131 is provided with a slot 1310, and the shape of the fixing bar 132 matches the shape of the slot 1310. The fixing bar 132 cooperates with the slot 1310 to realize the quick connection and disassembly of the optical transmitting submodule 11 and the optical receiving submodule 12.

[0037] Furthermore, in order to improve the reliability of the connection between the optical transmitting submodule 11 and the optical receiving submodule 12, two fixing blocks 131 are provided on the optical receiving submodule 12 and are distributed on both sides of the optical receiving submodule 12, and the slots 1310 are provided on the fixing blocks 131; two fixing bars 132 are provided on the optical transmitting submodule 11 and are distributed on both sides of the optical transmitting submodule 11.

[0038] It can be understood that by respectively arranging the detachable connecting structure 13 on both sides of the optical transmitting submodule 11 or the optical receiving submodule 12, the fixing bars 132 on both sides of the optical transmitting submodule 11 are simultaneously restricted by the slots 1310 on both sides of the optical receiving submodule 12. While realizing the connection between the optical transmitting submodule 11 and the optical receiving submodule 12, the optical transmitting submodule 11 can also be positioned, thereby improving the reliability of the connection between the optical transmitting submodule 11 and the optical receiving submodule 12.

[0039] It should be noted that the arrangement of the fixing strip 132 and the slot 1310 is only one form of the detachable connection structure 13 and does not constitute a limitation on the detachable connection structure 13. In other embodiments, the detachable connection structure 13 may also be other structures, such as a mortise and tenon structure, a threaded connection structure, etc.

[0040] According to an embodiment of the present invention, in order to use the MPO connector 1 in conjunction with a standard MPO adapter, the MPO connector 1 further includes a connecting frame 14 for connecting to the MPO adapter 4. Figure 3The figure is a schematic diagram of the structure of the connecting frame 14 in the embodiment of the present invention, and the connecting frame 14 is provided with a connecting structure 140 matching with the MPO adapter 4; the optical transmitting submodule 11 and the optical receiving submodule 12 are detachably arranged on the connecting frame 14. Specifically, the connecting structure 140 is a convex block fixedly arranged on both sides of the connecting frame 14, and the convex blocks on both sides of the connecting frame 14 can cooperate with the elastic buckles 40 on both sides of the MPO adapter 4 to achieve the connection and locking of the connecting frame 14 and the MPO adapter 4, as shown in FIG. Figure 4 FIG. 1 is a schematic diagram of the structure of an MPO adapter in the prior art. Figure 5 The figure shows a schematic diagram of the structure after the MPO connector 1 and the MPO adapter 4 are assembled.

[0041] As a specific embodiment, the optical transmitting sub-module 11 and the optical receiving sub-module 12 are detachably arranged on the connecting frame 14 as follows: a receiving groove 141 is provided at one end of the connecting frame 14 away from the transmitting end FA component 2 or the receiving end FA component 3, and the optical transmitting sub-module 11 and the optical receiving sub-module 12 are placed in the receiving groove 141.

[0042] Please continue to refer to Figure 1 According to one embodiment of the present invention, in order to ensure the stability and reliability of the optical transmitting submodule 11 or the optical receiving submodule 12 docking with the external optical fiber jumper, the MPO connector 1 also includes two PIN pins 15, and the two PIN pins 15 pass through the optical transmitting submodule 11 and the optical receiving submodule 12 respectively. The PIN pins can be docked with the guide pin holes on the optical fiber line to ensure the stability and reliability of the optical transmitting submodule 11 or the optical receiving submodule 12 docking with the external optical fiber jumper.

[0043] Please continue to refer to Figure 3 Furthermore, a through hole 142 is opened on the side wall of the accommodating groove 141 at a position corresponding to the two PIN needles 15, and the two PIN needles 15 respectively penetrate into the optical transmitting sub-module 11 and the optical receiving sub-module 12 through the corresponding through holes 142.

[0044] Please continue to refer to Figure 1 According to one embodiment of the present invention, the MPO connector 1 also includes two fiber combing grooves 16 respectively fixedly connected to the ends of the optical transmitting submodule 11 and the optical receiving submodule 12. Specifically, the two fiber combing grooves 16 are respectively bonded to the ends of the optical transmitting submodule 11 and the optical receiving submodule 12; the transmitting end FA component 2 and the receiving end FA component 3 are respectively connected to the two fiber combing grooves 16 through optical fibers, and the two fiber combing grooves 16 can comb TOSA optical fiber and ROSA optical fiber respectively.

[0045] Please continue to refer to Figure 3 Furthermore, a clearance groove 143 is opened at the position of the connecting frame 14 corresponding to the two fiber combing grooves 16.

[0046] Embodiment 1

[0047] The embodiment of the present invention provides a coupling process of MT-FA with detachable MPO, which is used for coupling of MT-FA during device production, such as Figure 6 The flowchart of the coupling process of the MT-FA with a detachable MPO in this embodiment is shown, which includes the following steps:

[0048] S1: respectively couple the transmitting end FA component 2 and the receiving end FA component 3 with the photoelectric conversion chip on the PCB board;

[0049] S2: Connect the optical transmitting submodule 11 and the optical receiving submodule 12 via the detachable connecting structure 13 to assemble and form the MPO connector 1;

[0050] S3: Connect MPO connector 1 to the external optical fiber jumper.

[0051] Embodiment 2

[0052] The embodiment of the present invention also provides a coupling process of MT-FA with detachable MPO, which is used for coupling of MT-FA when the device is modularized, such as Figure 7 The flowchart of the coupling process of the MT-FA with a detachable MPO in this embodiment is shown, which includes the following steps:

[0053] S1: respectively couple the transmitting end FA component 2 and the receiving end FA component 3 with the photoelectric conversion chip on the PCB board;

[0054] S2: Connect the optical transmitting submodule 11 and the optical receiving submodule 12 via the detachable connecting structure 13 to assemble and form the MPO connector 1;

[0055] S3: After connecting the MPO connector 1 to the MPO adapter 4, the MPO adapter 4 is connected to the optical fiber jumper.

[0056] In order to facilitate the understanding of this scheme, the following Figure 1-Figure 7 The working principle of the present invention is described in detail:

[0057] Before the coupling process, the various parts of the MPO connector 1 are separated from each other, wherein the optical transmitting submodule 11 with the fiber combing groove 16 is connected to the transmitting end FA component 2 through optical fiber, and the optical receiving submodule 12 with the fiber combing groove 16 is connected to the receiving end FA component 3 through optical fiber.

[0058] The coupling process specifically includes the following steps:

[0059] Step 1: Couple the transmitter FA component 2 and the receiver FA component 3 to the photoelectric conversion chip on the PCB board respectively. During the coupling, the transmitter FA component 2 and the receiver FA component 3 are bonded to the photoelectric conversion chip by glue;

[0060] Step 2: Fix the optical fiber between the transmitting end FA component 2 and the optical transmitting submodule 11 and the optical fiber between the receiving end FA component 3 and the optical receiving submodule 12 on the PCB board by glue;

[0061] Step 3: Connect the light transmitting submodule 11 and the light receiving submodule 12 via the detachable connecting structure 13 to form a whole;

[0062] Step 4: After the optical transmitting submodule 11 and the optical receiving submodule 12 are assembled and connected to the external optical fiber jumper, the PIN needle 15 is installed; or

[0063] After the optical transmitting submodule 11 and the optical receiving submodule 12 are assembled into a whole, the whole is placed in the receiving groove 141 of the connecting frame 14 and the PIN needle 15 is installed, and then the connecting structure 140 provided by the connecting frame 14 is used to connect with the MPO adapter 4, and finally the MPO adapter 4 is used to connect with the external optical fiber jumper. Specifically, the optical fiber jumper can be a conventional 12-core or 8-core MTP jumper.

[0064] In summary, the MT-FA and coupling process with a detachable MPO provided by the present invention, when used in the DR series device process, the production and coupling process of the transmitting end and the receiving end are completely separated. In actual production, it can help solve the problem that one end of the MT-FA is always in an active state due to the difference in sequence between the processes such as ROSA and TOSA, thereby damaging the gold wire of the device and causing device-level defects, as well as the stress pulling problem on the optical fiber during coupling; by removing the MPO connector, the TX FA and RX FA can be coupled to the corresponding processes independently, avoiding damage to the gold wire and the end face of the optical fiber caused by the suspension of one when the other is coupled; and when the device has poor coupling, the TX FA and RX FA can be reworked separately, thereby improving the rework efficiency and reducing the rework cost.

[0065] It should be noted that although the present invention is disclosed as above by specific embodiments, the above embodiments are not intended to limit the present invention. Ordinary technicians in this field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. An MT-FA with a detachable MPO, characterized in that: include: An MPO connector (1) comprises an optical transmission submodule (11), an optical reception submodule (12) and a detachable connection structure (13), wherein the optical transmission submodule (11) and the optical reception submodule (12) are detachably connected to form a whole via the detachable connection structure (13); The transmitting end FA component (2) and the receiving end FA component (3) are respectively connected to the optical transmitting submodule (11) and the optical receiving submodule (12) via optical fibers.

2. The MT-FA with a detachable MPO according to claim 1, characterized in that: The detachable connection structure (13) comprises: A fixing block (131) fixedly arranged on the light receiving submodule (12), wherein a slot (1310) is provided on the fixing block (131); A fixing bar (132) is fixedly arranged on the light emitting sub-module (11), and the shape of the fixing bar (132) matches the shape of the slot (1310).

3. The MT-FA with a detachable MPO according to claim 2, characterized in that: Two fixing blocks (131) are provided on the optical receiving submodule (12) and are distributed on both sides of the optical receiving submodule (12), and the slots (1310) are provided on each of the fixing blocks (131); two fixing bars (132) are provided on the optical transmitting submodule (11) and are distributed on both sides of the optical transmitting submodule (11).

4. The MT-FA with a detachable MPO according to claim 1, characterized in that: The MPO connector (1) further comprises a connection frame (14) for connecting to the MPO adapter (4); the connection frame (14) is provided with a connection structure (140) matching the MPO adapter (4); the optical transmitting submodule (11) and the optical receiving submodule (12) are detachably arranged on the connection frame (14).

5. The MT-FA with a detachable MPO according to claim 4, characterized in that: An accommodating groove (141) is provided at one end of the connecting frame (14) away from the transmitting end FA component (2) or the receiving end FA component (3), and the optical transmitting submodule (11) and the optical receiving submodule (12) are placed in the accommodating groove (141).

6. The MT-FA with a detachable MPO according to claim 5, characterized in that: The MPO connector (1) further comprises two PIN pins (15), and the two PIN pins (15) pass through the optical transmitting submodule (11) and the optical receiving submodule (12) respectively.

7. The MT-FA with a detachable MPO according to claim 6, characterized in that: A through hole (142) is provided on the side wall of the accommodating groove (141) at a position corresponding to the two PIN needles (15), and the two PIN needles (15) respectively penetrate into the optical transmitting submodule (11) and the optical receiving submodule (12) through the corresponding through holes (142).

8. The MT-FA with a detachable MPO according to claim 4, characterized in that: The MPO connector (1) further comprises two fiber combing grooves (16) respectively fixedly connected to the ends of the optical transmitting submodule (11) and the optical receiving submodule (12); the transmitting end FA component (2) and the receiving end FA component (3) are respectively connected to the two fiber combing grooves (16) via optical fibers.

9. The MT-FA with a detachable MPO according to claim 8, characterized in that: A clearance groove (143) is provided on the connection frame (14) at a position corresponding to the two fiber combing grooves (16).

10. A coupling process of MT-FA, implemented based on the MT-FA with detachable MPO according to any one of claims 1 to 9, characterized in that: The following steps are involved: The transmitting end FA component (2) and the receiving end FA component (3) are respectively coupled to the photoelectric conversion chip on the PCB board; The optical transmission submodule (11) and the optical reception submodule (12) are connected via a detachable connection structure (13) to assemble and form an MPO connector (1); The MPO connector (1) is connected to an external optical fiber patch cord, or the MPO connector (1) is connected to an MPO adapter (4), and then the MPO adapter (4) is connected to the optical fiber patch cord.

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