Optical module and method for manufacturing the same

Abstract

The present invention relates to the field of optical communication technology, and discloses an optical module and a preparation method thereof. The optical module comprises: a printed circuit board assembly; a first lens and a second lens, which are fixed on the printed circuit board assembly in sequence; an optical fiber assembly, which is located on the first lens and the second lens, and the optical fiber assembly comprises a first MT optical fiber connector, a second MT optical fiber connector and an optical fiber ribbon; wherein the first MT optical fiber connector is fixed on the first lens, the second MT optical fiber connector is fixed on the second lens, and the optical fiber ribbon connects the first MT optical fiber connector and the second MT optical fiber connector. The present invention only uses two MT optical fiber connectors, saving the cost of MT optical fiber connectors. Only one optical fiber ribbon is used between the first MT optical fiber connector and the second MT optical fiber connector, which has a simpler structure and is more convenient to manufacture, thereby reducing the cost of the optical module product. In addition, only one optical fiber ribbon is used to facilitate coupling, thereby reducing the damage to the optical fiber ribbon during the coupling process.

Description

Technical Field

[0001] The present invention relates to the field of optical communication technology, and in particular to an optical module and a preparation method thereof. Background Art

[0002] In the era of the simultaneous explosion of the Internet of Things, big data, and AI intelligence, the demand for optical modules is increasing, especially for 400G and 800G optical modules, with the annual demand at the level of tens of millions. Figure 1 , Figure 1 This is a schematic diagram of the structure of a typical 400G SR8 optical module, which includes a PCBA, two lenses, two MTs connected to the lenses, an MT connected to the output end, and two optical fiber ribbons connecting the MTs. Each optical fiber ribbon includes multi-channel transmission and reception, as well as laser drivers, TIAs, PD arrays, VCSEL arrays, etc. ( Figure 1 (not shown). Figure 1 The optical module solution requires 3 MTs and 2 optical fiber ribbons, and the structure is very complicated. In addition, the existence of the 2 optical fiber ribbons will also cause coupling problems. Summary of the invention

[0003] The main purpose of the present invention is to provide an optical module and a preparation method thereof, aiming to solve at least one of the above technical problems.

[0004] To achieve the above object, the present invention provides an optical module, comprising:

[0005] Printed circuit board assemblies;

[0006] A first lens and a second lens are fixed on the printed circuit board assembly in sequence;

[0007] An optical fiber assembly is located on the first lens and the second lens, and the optical fiber assembly includes a first MT optical fiber connector, a second MT optical fiber connector, and an optical fiber ribbon;

[0008] The first MT optical fiber connector is fixed on the first lens, the second MT optical fiber connector is fixed on the second lens, and the optical fiber ribbon connects the first MT optical fiber connector and the second MT optical fiber connector.

[0009] In some embodiments, the first MT optical fiber connector and the second MT optical fiber connector are Core fiber optic connector.

[0010] In some embodiments, the first MT optical fiber connector and the second MT optical fiber connector are provided with two horizontally parallel rows of fiber holes, each row being provided with 12 fiber holes; wherein,

[0011] The four fiber insertion holes on the left side and the four fiber insertion holes on the right side of each row of the fiber insertion holes are used for optical fibers to pass through; the four middle fiber insertion holes in each row of the fiber insertion holes are not used for optical fibers to pass through.

[0012] In some embodiments, the optical fiber ribbon is an 8-core optical fiber ribbon; wherein the 8-core optical fiber ribbon includes four-way transmission and four-way reception, and the 8-core optical fiber ribbon is respectively connected to the first MT optical fiber connector and the second MT optical fiber connector.

[0013] In some embodiments, the optical module further includes an optoelectronic chip, the printed circuit board assembly is a PCBA board, and the optoelectronic chip is bonded to the PCBA board.

[0014] In some embodiments, the optical module is a 400G / 800G / 1.6T SR8 optical module.

[0015] In addition, to achieve the above object, the present invention also proposes a method for preparing the optical module as described above, comprising:

[0016] manufacturing an optical fiber ribbon with MT optical fiber connectors, so as to connect the first MT optical fiber connector and the second MT optical fiber connector through the optical fiber ribbon;

[0017] Fixing the first MT optical fiber connector and the second MT optical fiber connector to the first lens and the second lens respectively;

[0018] Installing the first MT optical fiber connector and the second MT optical fiber connector on fixtures on a coupling platform respectively;

[0019] Installing the printed circuit board assembly on the machine table;

[0020] Connecting a light source to the 8 receiving channels of the second MT optical fiber connector, and connecting an optical power meter to the 8 transmitting channels of the second MT optical fiber connector;

[0021] The positions of the first lens and the second lens are adjusted respectively so that the optical power corresponding to each channel monitored by the optical power meter reaches the maximum at the same time and the responsivity corresponding to each channel reaches the maximum at the same time;

[0022] Apply UV glue on the corresponding positions of the first lens and the second lens, turn on the UV lamp to cure the glue and bake the coupled optical module products to cure the glue.

[0023] In some embodiments, the first MT optical fiber connector and the second MT optical fiber connector are provided with two horizontally parallel rows of fiber holes, each row being provided with 12 fiber holes; wherein,

[0024] The four fiber insertion holes on the left side and the four fiber insertion holes on the right side of each row of the fiber insertion holes are used for optical fibers to pass through; the four middle fiber insertion holes in each row of the fiber insertion holes are not used for optical fibers to pass through.

[0025] In some embodiments, the method of making an optical fiber ribbon with MT optical fiber connectors to connect the first MT optical fiber connector and the second MT optical fiber connector through the optical fiber ribbon includes:

[0026] Pass the first optical fiber through the eight fiber holes in the lower row of fiber holes of the second MT optical fiber connector;

[0027] Using a grinding process to make the optical fiber end face of the first optical fiber flush with the left end face and the right end face of the second MT optical fiber connector;

[0028] Passing the second optical fiber through the eight fiber holes in the upper row of fiber holes of the second MT optical fiber connector;

[0029] Using a grinding process to make the end face of the second optical fiber flush with the right end face of the second MT optical fiber connector;

[0030] Passing the second optical fiber extending from the left end surface of the second MT optical fiber connector into the eight fiber insertion holes in the lower row of fiber insertion holes on the right side of the first MT optical fiber connector;

[0031] Passing the second optical fiber out from the left side of the first MT optical fiber connector;

[0032] The end face of the optical fiber passing through the left side of the first MT optical fiber connector is made flush with the left end face of the first MT optical fiber connector by a grinding process; wherein the optical fibers of the first MT optical fiber connector and the second MT optical fiber connector correspond one to one.

[0033] The present invention provides an optical module, comprising: a printed circuit board assembly; a first lens and a second lens, which are fixed on the printed circuit board assembly in sequence; an optical fiber assembly, which is located on the first lens and the second lens, and the optical fiber assembly comprises a first MT optical fiber connector, a second MT optical fiber connector and an optical fiber ribbon; wherein the first MT optical fiber connector is fixed on the first lens, the second MT optical fiber connector is fixed on the second lens, and the optical fiber ribbon connects the first MT optical fiber connector and the second MT optical fiber connector. In the present invention, only two MT optical fiber connectors, the first MT optical fiber connector and the second MT optical fiber connector, are used, which greatly saves the cost of the MT optical fiber connector. Only one optical fiber ribbon is used between the first MT optical fiber connector and the second MT optical fiber connector, which has a simpler structure and is more convenient to manufacture, and can also reduce the cost of the optical module product. In addition, only one optical fiber ribbon is used in the solution of the present invention, which is more convenient for coupling, and can reduce the damage of the optical fiber ribbon during the coupling process, thereby improving the coupling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1This is a schematic diagram of the structure of a traditional 400G SR8 optical module;

[0035] Figure 2 This is a schematic diagram of the structure of an optical module according to an embodiment of the present invention;

[0036] Figure 3 It is a schematic structural diagram of an optical fiber connector MT and an optical fiber ribbon involved in an embodiment of the present invention;

[0037] Figure 4 The figure is a flow chart of an embodiment of a method for preparing an optical module of the present invention.

[0038] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0042] The invention provides an optical module and a preparation method thereof.

[0043] Reference Figure 2 , Figure 2 It is a structural schematic diagram of an embodiment of an optical module of the present invention.

[0044] like Figure 2As shown, the optical module includes:

[0045] Printed Circuit Board Assembly PCBA;

[0046] The first lens Lens1 and the second lens Lens2 are fixed on the printed circuit board assembly PCBA in sequence;

[0047] An optical fiber assembly is located on the first lens Lens1 and the second lens Lens2, and the optical fiber assembly includes a first MT optical fiber connector MT1, a second MT optical fiber connector MT2 and an optical fiber ribbon;

[0048] The first MT optical fiber connector MT1 is fixed on the first lens Lens1, the second MT optical fiber connector MT2 is fixed on the second lens Lens2, and the optical fiber ribbon connects the first MT optical fiber connector MT1 and the second MT optical fiber connector MT2.

[0049] In one embodiment, the optical module is a 400G / 800G / 1.6T SR8 optical module.

[0050] It should be noted that this embodiment is described by taking the 400G SR8 product as an example. The first lens Lens1 and the second lens Lens2 can be fixed on the printed circuit board assembly PCBA by glue.

[0051] Specifically, the technical solution of this embodiment is as follows: Figure 2 As shown. By adopting the technical solution of this embodiment, only two MT optical fiber connectors (the first MT optical fiber connector MT1 and the second MT optical fiber connector MT2) are used, which saves the cost of MT optical fiber connectors; by adopting the technical solution of this embodiment, there is only one optical fiber ribbon between the first MT optical fiber connector MT1 and the second MT optical fiber connector MT2, which has a simpler structure and is more convenient to manufacture, and also reduces the cost of the product in disguise; by adopting the technical solution of this embodiment, there is only one optical fiber ribbon, which is more convenient during coupling and reduces the possibility of damage to the optical fiber ribbon during the coupling process.

[0052] In one embodiment, the first MT optical fiber connector MT1 and the second MT optical fiber connector MT2 are Core fiber optic connector.

[0053] In one embodiment, the first MT optical fiber connector MT1 and the second MT optical fiber connector MT2 are provided with two horizontally parallel rows of fiber holes, each row being provided with 12 fiber holes; wherein,

[0054] The four fiber insertion holes on the left side and the four fiber insertion holes on the right side of each row of the fiber insertion holes are used for optical fibers to pass through; the four middle fiber insertion holes in each row of the fiber insertion holes are not used for optical fibers to pass through.

[0055] In one embodiment, the optical fiber ribbon is an 8-core optical fiber ribbon; wherein the 8-core optical fiber ribbon includes four-way transmission and four-way reception, and the 8-core optical fiber ribbon is respectively connected to the first MT optical fiber connector MT1 and the second MT optical fiber connector MT2.

[0056] Specifically, the first MT optical fiber connector MT1 and the second MT optical fiber connector MT2 adopt Core structure, such as Figure 3 As shown, the first MT fiber connector MT1 and the second MT fiber connector MT2 have 12 fiber holes in each row, with a total of 2 rows, the 4 middle holes in each row are not threaded with fibers, the upper row is threaded with 8 optical fibers, including four-way transmission and four-way reception, the lower row is also 8 optical fibers, also including four-way transmission and four-way reception, after the optical fiber ribbon passes through the MT fiber connector, the optical fiber end face is flush with the right end face of the first MT fiber connector MT1 (after threading, for example, a grinding process can be used to make the optical fiber ribbon flush with the surface of the MT fiber connector).

[0057] For example, Figure 3 The 8 optical fibers in the lower row of the first MT optical fiber connector MT1 are flush with the left end surface of the first MT optical fiber connector MT1 (after fiber insertion, the optical fiber ribbon can be made flush with the surface of the MT by, for example, a grinding process). The 8 optical fibers passing through the upper half of the first MT optical fiber connector MT1 come out from the left side of the first MT optical fiber connector MT1 and then pass through the eight fiber insertion holes below the second MT optical fiber connector MT2 from the right side (the 4 middle holes are not inserted with fibers). The optical fibers of the first MT optical fiber connector MT1 and the second MT optical fiber connector MT2 correspond to each other one by one and do not cross (such as Figure 3 The end faces of the eight optical fibers coming out from the left side of the second MT optical fiber connector MT2 are flush with the left end face of the second MT optical fiber connector MT2.

[0058] In one embodiment, the optical module further includes an optoelectronic chip, the printed circuit board assembly is a PCBA board, and the optoelectronic chip is bonded to the PCBA board.

[0059] Specifically, in practical applications, the first MT fiber connector MT1 and the second MT fiber connector MT2 are fixed to two lenses (the first lens and the second lens) respectively; the first MT fiber connector MT1 and the second MT fiber connector MT2 are respectively mounted on fixtures on the coupling table; the PCBA board is mounted on the machine table and the product is debugged. It can be understood that the PCBA board has completed the operations such as the patch and gold wire bonding of the optoelectronic chip. In this embodiment, the printed circuit board assembly is a PCBA board, and the optoelectronic chip is bonded (for example, by glue) on the PCBA board. Figure 2 and Figure 3Other structures such as optoelectronic chips are not shown.

[0060] The present embodiment provides an optical module, including: a printed circuit board assembly; a first lens and a second lens, which are fixed on the printed circuit board assembly in sequence; an optical fiber assembly, which is located on the first lens and the second lens, and the optical fiber assembly includes a first MT optical fiber connector, a second MT optical fiber connector and an optical fiber ribbon; wherein the first MT optical fiber connector is fixed on the first lens, the second MT optical fiber connector is fixed on the second lens, and the optical fiber ribbon connects the first MT optical fiber connector and the second MT optical fiber connector. In the present embodiment, only two MT optical fiber connectors, the first MT optical fiber connector and the second MT optical fiber connector, are used, which greatly saves the cost of the MT optical fiber connector. Only one optical fiber ribbon is used between the first MT optical fiber connector and the second MT optical fiber connector, which has a simpler structure and is more convenient to manufacture, and can also reduce the cost of the optical module product. In addition, only one optical fiber ribbon is used in the solution of the present embodiment, which is more convenient for coupling, and can reduce the damage of the optical fiber ribbon during the coupling process, thereby improving the coupling effect.

[0061] The embodiment of the present invention provides a method for preparing the optical module as described in the above embodiment, referring to Figure 4 , Figure 4 The figure is a flow chart of an embodiment of a method for preparing an optical module of the present invention.

[0062] like Figure 4 As shown, the method for preparing the optical module includes:

[0063] Step S100: manufacturing an optical fiber ribbon with MT optical fiber connectors, so as to connect a first MT optical fiber connector and a second MT optical fiber connector through the optical fiber ribbon;

[0064] Step S200: fixing the first MT optical fiber connector and the second MT optical fiber connector to the first lens and the second lens respectively;

[0065] Step S300: installing the first MT optical fiber connector and the second MT optical fiber connector on fixtures on a coupling platform respectively;

[0066] Step S400: Installing the printed circuit board assembly on the machine platform;

[0067] Step S500: connecting a light source to the 8-way receiving port of the second MT optical fiber connector, and connecting an optical power meter to the 8-way transmitting port of the second MT optical fiber connector;

[0068] Step S600: adjusting the positions of the first lens and the second lens respectively so that the optical power corresponding to each channel monitored by the optical power meter reaches the maximum at the same time and the responsivity corresponding to each channel reaches the maximum at the same time;

[0069] Step S700: Apply UV glue to the corresponding positions of the first lens and the second lens, turn on the UV lamp to cure the glue, and bake the coupled optical module product to cure the glue.

[0070] In one embodiment, the first MT optical fiber connector and the second MT optical fiber connector are provided with two horizontally parallel rows of fiber holes, each row being provided with 12 fiber holes; wherein,

[0071] The four fiber insertion holes on the left side and the four fiber insertion holes on the right side of each row of the fiber insertion holes are used for optical fibers to pass through; the four middle fiber insertion holes in each row of the fiber insertion holes are not used for optical fibers to pass through.

[0072] In one embodiment, the method of making an optical fiber ribbon with an MT optical fiber connector to connect a first MT optical fiber connector and a second MT optical fiber connector through the optical fiber ribbon includes:

[0073] Pass the first optical fiber through the eight fiber holes in the lower row of fiber holes of the second MT optical fiber connector;

[0074] Using a grinding process to make the optical fiber end face of the first optical fiber flush with the left end face and the right end face of the second MT optical fiber connector;

[0075] Passing the second optical fiber through the eight fiber holes in the upper row of fiber holes of the second MT optical fiber connector;

[0076] Using a grinding process to make the end face of the second optical fiber flush with the right end face of the second MT optical fiber connector;

[0077] Passing the second optical fiber extending from the left end surface of the second MT optical fiber connector into the eight fiber insertion holes in the lower row of fiber insertion holes on the right side of the first MT optical fiber connector;

[0078] Passing the second optical fiber out from the left side of the first MT optical fiber connector;

[0079] The end face of the optical fiber passing through the left side of the first MT optical fiber connector is made flush with the left end face of the first MT optical fiber connector by a grinding process; wherein the optical fibers of the first MT optical fiber connector and the second MT optical fiber connector correspond one to one.

[0080] It should be noted that this embodiment is described using the 400G SR8 product as an example.

[0081] Specifically, the steps of making an optical fiber ribbon with an optical fiber connector MT include:

[0082] Step 1: Reference Figure 3 ,Will Figure 3The 8 holes in the lower part of the second MT fiber connector MT2 shown in the figure are threaded with 8 optical fibers (the 4 holes in the middle are not threaded with fibers), and the end faces of the optical fibers are made flush with the left and right end faces of MT2 by a grinding process;

[0083] Step 2: Thread 8 optical fibers through the 8 holes on the upper part of the second MT optical fiber connector MT2 (leave the 4 holes in the middle unthreaded), and use a grinding process to make the optical fiber end face flush with the right end face of the second MT optical fiber connector MT2;

[0084] Step 3: The 8 optical fibers coming out from the left side of the second MT fiber connector MT2 are inserted into the 8 holes in the lower right half of the first MT fiber connector MT1, and then come out from the left side of the first MT fiber connector MT1 (the 4 middle holes are not inserted with fibers). The optical fibers of the first MT fiber connector MT1 and the second MT fiber connector MT2 correspond to each other one by one without crossing. Then, the polishing process is used to make the end face of the optical fiber coming out from the left side of the first MT fiber connector MT1 flush with the left end face of the first MT fiber connector MT1.

[0085] Specifically, the specific implementation steps of using the optical fiber ribbon with the optical fiber connector MT manufactured in the above embodiment to manufacture an optical module product include:

[0086] 1. Fix the first MT optical fiber connector MT1 and the second MT optical fiber connector MT2 to two lenses (the first lens Lens1 and the second lens Lens2) respectively;

[0087] 2. Install the first MT optical fiber connector MT1 and the second MT optical fiber connector MT2 on the fixtures on the coupling table respectively;

[0088] 3. Install the PCBA on the machine (the PCBA has completed the patch and gold wire bonding of the optoelectronic chip);

[0089] 4. Figure 2 In the structure shown, the 8 receiving channels of the second MT optical fiber connector MT2 are connected to the light source, and the 8 transmitting channels of the second MT optical fiber connector MT2 are connected to the optical power meter;

[0090] 5. Power on the PCBA and adjust Figure 2 The position of the right lens (second lens Lens 2) in the structure shown is such that the monitored optical power corresponding to each channel reaches the maximum at the same time, and the response degree corresponding to each channel reaches the maximum at the same time;

[0091] 6. Apply glue at the transparent corresponding glue dispensing position and turn on the UV lamp to cure the glue;

[0092] 7. Adjustment Figure 2The position of the left lens (first lens Lens 1) is shown so that the monitored optical power of each corresponding channel reaches the maximum at the same time, and the response degree of each corresponding channel reaches the maximum at the same time;

[0093] 8. Apply glue at the transparent corresponding glue dispensing position and turn on the UV lamp to cure the glue;

[0094] 9. Place the coupled products in an oven to further cure the glue.

[0095] This embodiment proposes a method for preparing an optical module. The optical module prepared by the above method only uses two MT optical fiber connectors, namely a first MT optical fiber connector and a second MT optical fiber connector, which greatly saves the cost of the MT optical fiber connector. Only one optical fiber ribbon is used between the first MT optical fiber connector and the second MT optical fiber connector, which has a simpler structure and is more convenient to manufacture, and can also reduce the cost of the optical module product. In addition, only one optical fiber ribbon is used in the solution of this embodiment, which is more convenient for coupling, and can reduce the damage of the optical fiber ribbon during the coupling process, thereby improving the coupling effect.

[0096] It should be noted that the technical details that are not described in detail in the above-mentioned embodiment of the method for preparing the optical module can be found in any embodiment of the present invention applied to the optical module described above, and will not be repeated here.

[0097] In addition, an embodiment of the present invention further provides a storage medium, on which a preparation program for an optical module is stored. When the preparation program for an optical module is executed by a processor, the steps of the preparation method for an optical module as described above are implemented.

[0098] It should be understood that the above is only an example and does not constitute any limitation on the technical solution of the present invention. In specific applications, technicians in this field can make settings as needed, and the present invention does not limit this.

[0099] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of the present invention. In practical applications, technicians in this field can select part or all of them according to actual needs to achieve the purpose of the present embodiment, and no limitation is made here.

[0100] In addition, it should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0101] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0102] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as a read-only memory (ROM) / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0103] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for preparing an optical module, characterized in that: include: Manufacturing an optical fiber ribbon with an MT optical fiber connector to connect the first MT optical fiber connector and the second MT optical fiber connector through the optical fiber ribbon; wherein there is only one optical fiber ribbon between the first MT optical fiber connector and the second MT optical fiber connector; Fixing the first MT optical fiber connector and the second MT optical fiber connector to the first lens and the second lens respectively; Installing the first MT optical fiber connector and the second MT optical fiber connector on fixtures on a coupling platform respectively; Installing the printed circuit board assembly on the machine table; Connecting a light source to the 8 receiving channels of the second MT optical fiber connector, and connecting an optical power meter to the 8 transmitting channels of the second MT optical fiber connector; The positions of the first lens and the second lens are adjusted respectively so that the optical power corresponding to each channel monitored by the optical power meter reaches the maximum at the same time and the responsivity corresponding to each channel reaches the maximum at the same time; Apply UV glue on the corresponding positions of the first lens and the second lens, turn on the UV lamp to cure the glue and bake the coupled optical module products to cure the glue.

2. The preparation method according to claim 1, characterized in that The first MT optical fiber connector and the second MT optical fiber connector are provided with two horizontally parallel rows of fiber holes, each row being provided with 12 fiber holes; wherein, The four fiber insertion holes on the left side and the four fiber insertion holes on the right side of each row of the fiber insertion holes are used for optical fibers to pass through; the four middle fiber insertion holes in each row of the fiber insertion holes are not used for optical fibers to pass through.

3. The preparation method according to claim 2, characterized in that: The method of manufacturing an optical fiber ribbon with an MT optical fiber connector to connect a first MT optical fiber connector and a second MT optical fiber connector through the optical fiber ribbon comprises: Pass the first optical fiber through the eight fiber holes in the lower row of fiber holes of the second MT optical fiber connector; Using a grinding process to make the optical fiber end face of the first optical fiber flush with the left end face and the right end face of the second MT optical fiber connector; Passing the second optical fiber through the eight fiber holes in the upper row of fiber holes of the second MT optical fiber connector; Using a grinding process to make the end face of the second optical fiber flush with the right end face of the second MT optical fiber connector; Passing the second optical fiber extending from the left end surface of the second MT optical fiber connector into the eight fiber insertion holes in the lower row of fiber insertion holes on the right side of the first MT optical fiber connector; Passing the second optical fiber out from the left side of the first MT optical fiber connector; The end face of the optical fiber passing through the left side of the first MT optical fiber connector is made flush with the left end face of the first MT optical fiber connector by a grinding process; wherein the optical fibers of the first MT optical fiber connector and the second MT optical fiber connector correspond one to one.

4. An optical module, characterized in that: The optical module is prepared based on the method according to any one of claims 1 to 3, and the optical module comprises: Printed circuit board assemblies; A first lens and a second lens are fixed on the printed circuit board assembly in sequence; An optical fiber assembly is located on the first lens and the second lens, and the optical fiber assembly includes a first MT optical fiber connector, a second MT optical fiber connector, and an optical fiber ribbon; The first MT fiber optic connector is fixed on the first lens, the second MT fiber optic connector is fixed on the second lens, and the optical fiber ribbon connects the first MT fiber optic connector and the second MT fiber optic connector; there is only one optical fiber ribbon between the first MT fiber optic connector and the second MT fiber optic connector.

5. The optical module according to claim 4, characterized in that: The first MT optical fiber connector and the second MT optical fiber connector are 2 12-core fiber optic connector.

6. The optical module according to claim 5, characterized in that: The first MT optical fiber connector and the second MT optical fiber connector are provided with two horizontally parallel rows of fiber holes, each row being provided with 12 fiber holes; wherein, The four fiber insertion holes on the left side and the four fiber insertion holes on the right side of each row of the fiber insertion holes are used for optical fibers to pass through; the four middle fiber insertion holes in each row of the fiber insertion holes are not used for optical fibers to pass through.

7. The optical module according to claim 4, characterized in that: The optical fiber ribbon is an 8-core optical fiber ribbon; wherein the 8-core optical fiber ribbon includes four transmission channels and four reception channels, and the 8-core optical fiber ribbon is respectively connected to the first MT optical fiber connector and the second MT optical fiber connector.

8. The optical module according to claim 4, wherein: The optical module further comprises an optoelectronic chip, the printed circuit board assembly is a PCBA board, and the optoelectronic chip is bonded to the PCBA board.

9. The optical module according to any one of claims 4 to 8, characterized in that: The optical module is a 400G / 800G / 1.6T SR8 optical module.

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