Optical module sealing insertion core and optical module

Abstract

The utility model relates to an optical module sealing insertion core and an optical module, and relates to the technical field of optical communication, and the optical module sealing insertion core comprises a guide pin, an insertion core seat and an optical fiber arranged in the insertion core seat. The ferrule base has a first end face and a second end face which are opposite. An insertion core hole and an optical fiber hole which penetrate through the first end face to the second end face are formed in the insertion core seat. The optical fiber is arranged in the optical fiber hole. And the guide pins are correspondingly inserted into the insertion core holes. One end of the guide pin protrudes out of the second end face, and the other end retracts inwards and is arranged in the ferrule hole. And a first sealant layer is formed in the insertion core hole between the guide pin and the first end face. Compared with the prior art, one end, close to the first end face, of the guide pin is arranged in the insertion core hole in an inward shrinkage manner, so that the inward shrinkage groove is formed. And the inner shrinkage groove can be used as an adhesive layer filling space. Due to the fact that enough glue filling space is formed by the inwards-shrinking groove, glue filling is convenient, the filled glue layer can make full contact with the guide pin, and the sealing performance between the guide pin and the first end face is better.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical communication technology, in particular to an optical module sealing ferrule and an optical module. BACKGROUND

[0002] At present, most of the optical modules used for data transmission communication in data centers use air cooling for heat dissipation. However, with the development of artificial intelligence, the demand for computing power has experienced explosive growth. At the same time, the improvement of computing power brings higher chip heat dissipation demand. At present, major Internet companies and cloud service providers are vigorously developing immersion liquid cooling data centers. In order to work effectively in the immersion liquid cooling environment, the optical devices and optical path parts in the optical module need to be effectively isolated from the cooling liquid.

[0003] The current mainstream way of isolating the cooling liquid in the market is the glass solder fusion method. This method melts the glass solder (the melting temperature is usually around 400℃) by electromagnetic induction heating, tightly combines the ribbon optical fiber and the metal sleeve, and forms a sealed section in the metal sleeve, thereby achieving the effect of blocking and sealing. However, this process has the risk of uneven density and uneven stress of the molten glass solder, and cracking and gas leakage failure in long-term high-low temperature cycles. At the same time, the pre-soldering process is also easy to damage and peel off the protective coating of the optical fiber.

[0004] Further, a technology of directly using a glue layer for sealing has appeared in the market. However, the traditional ferrule structure is not suitable for use as a sealing section. It usually includes a ferrule, a guide pin, and a base. The guide pin is connected to the base, and the base needs to be attached to the end face of the ferrule. There is a gap between the ferrule, the guide pin, and the base that is difficult to close. This makes it very difficult to seal with glue. Moreover, the guide pin directly fills the guide pin hole, so that the contact between the guide pin and the guide pin hole is a cylindrical surface, which also leads to poor glue filling and sealing performance. CONTENT OF THE UTILITY MODEL

[0005] The purpose of the embodiments of the present application is to provide an optical module sealing ferrule and an optical module, which are convenient to seal and can be used as a sealing section. The ferrule hole of the optical module sealing ferrule has sufficient glue filling space, good glue filling and sealing performance, and better sealing effect.

[0006] In a first aspect, the utility model provides an optical module sealing ferrule, which comprises a guide pin, a ferrule base, and an optical fiber arranged in the ferrule base.

[0007] The ferrule base has opposite first and second end faces, and the ferrule base is provided with a ferrule hole and an optical fiber hole that pass through the first end face to the second end face;

[0008] The optical fiber is arranged in the optical fiber hole, one end of the optical fiber extends out of the first end face, and the other end of the optical fiber is cut off at the second end face.

[0009] The guide needle is inserted into the ferrule hole, one end of the guide needle protrudes from the second end face, the other end near the second end face is arranged in the ferrule hole, and is spaced from the first end face. The ferrule hole between the guide needle and the first end face forms a first sealant layer for sealing the ferrule hole.

[0010] In an optional embodiment, the guide needle is a cylinder, and a glue filling groove is arranged on the circumferential surface of the guide needle. The glue filling groove is located in the ferrule hole, and a second sealant layer is formed between the glue filling groove and the hole wall of the ferrule hole. The second sealant layer is in contact with the inner wall of the ferrule hole.

[0011] In an optional embodiment, the glue filling groove is annular and annularly arranged on the circumferential surface of the guide needle.

[0012] In an optional embodiment, the glue filling groove is annular and annularly arranged on the circumferential surface of the guide needle.

[0013] In an optional embodiment, the outer diameter of the guide needle is matched with the inner diameter of the ferrule hole. The guide needle is assembled in the ferrule hole in an interference fit, and the plurality of second sealant layers are spaced from each other. The plurality of second sealant layers are spaced from the first sealant layer.

[0014] In an optional embodiment, the glue filling groove is annular and annularly arranged on the circumferential surface of the guide needle.

[0015] In an optional embodiment, the first end face is provided with an optical fiber, the ferrule hole is arranged on both sides of the optical fiber, the second end face is provided with an optical fiber hole, and the guide needle is arranged on both sides of the optical fiber hole. The optical fiber and the optical fiber hole are spaced from the ferrule hole.

[0016] In an optional embodiment, the ferrule seat comprises a first seat body and a second seat body arranged integrally. The width of the first seat body is greater than the width of the second seat body. The first end face is arranged at one end of the first seat body away from the second seat body. The second end face is arranged at one end of the second seat body away from the first seat body.

[0017] The utility model provides a kind of optical module, cover plate, substrate, shell, optical device and the sealed ferrule of the optical module of preceding, the substrate is arranged in the shell, the ferrule seat is arranged on the substrate, the cover plate is attached and arranged on the substrate, and is formed with the sealed inner cavity with the substrate, the optical device is arranged in the sealed inner cavity, and is connected with the ferrule seat by optical fiber, one end of the cover plate is also provided with the accommodation opening to the sealed inner cavity, the ferrule seat is contained in the accommodation opening, and the surface of the cover plate is attached and connected the ferrule seat.

[0018] In optional implementation, the sealing glue layer for sealing the sealed inner cavity is arranged between the substrate and the cover plate and between the ferrule seat and the cover plate.

[0019] The utility model embodiment has the following beneficial effects:

[0020] The optical module sealing ferrule and the optical module provided by the utility model embodiment are provided with the ferrule hole penetrating from the first end face to the second end face in the ferrule seat. The guide needle is inserted in the ferrule hole. One end of the guide needle protrudes from the second end face, and the other end is arranged in the ferrule hole. The first sealing glue layer is formed in the ferrule hole between the guide needle and the first end face. Compared with the prior art, the utility model arranges the end of the guide needle close to the first end face in the ferrule hole, so that the retracted recess is formed at the first end face. The retracted recess can be used as the glue filling space. Because the retracted recess forms sufficient glue filling space, glue filling is convenient, and the filled glue layer can fully contact the guide needle, so that the sealing between the guide needle and the first end face is better, and the overall sealing effect of the optical module sealing ferrule is better. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0022] Figure 1 The structure schematic diagram of the optical module sealing ferrule provided by the embodiments of the present application under the first visual angle is shown.

[0023] Figure 2 The structure schematic diagram of the optical module sealing ferrule provided by the embodiments of the present application under the second visual angle is shown.

[0024] Figure 3 The cross-sectional structure schematic diagram of the optical module sealing ferrule provided by the embodiments of the present application under the third visual angle is shown.

[0025] Figure 4 For Figure 3 Structure diagram of the guide needle in another preferred embodiment of the present application;

[0026] Figure 5 Structure diagram of the guide needle in another preferred embodiment of the present application;

[0027] Figure 6 Overall structure diagram of the optical module provided by the embodiment of the present application;

[0028] Figure 7 Partial structure diagram of the optical module provided by the embodiment of the present application.

[0029] Icon:

[0030] 100-sealing ferrule of the optical module; 110-guide needle; 111-glue filling groove; 130-ferrule seat; 131-first end face; 133-second end face; 135-ferrule hole; 137-first seat body; 139-second seat body; 150-optical fiber; 170-optical fiber hole; 180-first sealing glue layer; 190-second sealing glue layer; 200-optical module; 210-substrate; 211-sealing glue layer; 230-cover plate; 250-housing; 270-optical device. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0032] In the description of the present application, it should be noted that the directions or position relationships indicated by the terms “inner”, “outer” and the like are based on the directions or position relationships shown in the drawings, or the directions or position relationships in which the products of the present application are usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular direction, be constructed and operated in a particular direction, and therefore cannot be understood as limiting the present application. In addition, the terms “first”, “second” and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms “set”, “connected” should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium, or can be connected inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0034] The utility model provides a novel optical module sealing ferrule and optical module, below the optical module sealing ferrule and optical module are introduced in detail. It needs to be explained that the features in the embodiment in this application can be combined with each other in the case of no conflict. Specific embodiments

[0036] Referring to Figure 1 、 Figure 2 And Figure 3 The utility model embodiment provides a kind of optical module sealing ferrule 100, it is sealed conveniently, can be used as sealed section, with enough glue filling space, glue filling sealing property is better.

[0037] The utility model embodiment provides optical module sealing ferrule 100, including guide needle 110, ferrule seat 130 and the optical fiber 150 in ferrule seat 130. Ferrule seat 130 has opposite first end surface 131 and second end surface 133. Ferrule seat 130 is equipped with the ferrule hole 135 and the optical fiber hole 170 through first end surface 131 to second end surface 133. Optical fiber 150 is located in optical fiber hole 170. One end of optical fiber 150 extends from first end surface 131, and the other end of optical fiber 150 is cut off at second end surface 133. Guide needle 110 is correspondingly inserted in ferrule hole 135. One end of guide needle 110 protrudes from second end surface 133, and the other end is set in ferrule hole 135 and is spaced from first end surface 131. First sealing glue layer 180 is formed in ferrule hole 135 between guide needle 110 and first end surface 131.

[0038] In the embodiment, guide needle 110 can be used as the insertion part of adjacent optical fiber connector (such as multi-fiber optical fiber connector). First sealing glue layer 180 is filled in ferrule hole 135 between guide needle 110 and first end surface 131. The first sealing glue layer 180 can effectively seal ferrule hole 135, avoid external coolant to enter the gap between guide needle 110 and ferrule hole 135 through ferrule hole 135. Compared with conventional ferrule structure, the embodiment sets the end of guide needle 110 close to first end surface 131 in ferrule hole 135, so that the recessed groove can be formed in first end surface 131. The recessed groove can be used as glue filling space. Since the recessed groove forms enough glue filling space, glue filling is convenient, and the filled glue layer can fully contact guide needle 110, so that the sealing between guide needle 110 and first end 131 is better, and the overall sealing effect of optical module sealing ferrule 100 is better.

[0039] It should be noted that the distance between the guide needle 110 and the first end face 131 in the embodiment can be 1 / 10-1 / 5 of the hole length of the ferrule hole 135. In this way, the part of the ferrule hole 135 close to the first end face 131 can have enough space to accommodate the first sealant layer 180. The first sealant layer 180 can be formed by a dispensing process. After dispensing, baking hardening is performed to form the first sealant layer 180.

[0040] Referring to Figures 3 to 4 In some embodiments, the guide needle 110 is a cylinder. The circumferential surface of the guide needle 110 (i.e. the circumferential surface of the cylinder) is provided with a glue filling groove 111. When the guide needle 110 is located in the ferrule hole 135 as in the previous embodiment, the glue filling groove 111 is also located in the ferrule hole 135. The glue filling groove 111 and the hole wall of the ferrule hole 135 form a second sealant layer 190. The second sealant layer 190 is in contact with the inner wall of the ferrule hole 135. Specifically, the glue filling groove 111 is located at one end of the guide needle 110 close to the first end face 131. In actual production, the dispensing action at the glue filling groove 111 can be completed before the guide needle 110 is inserted into the ferrule hole 135. Then, the unhardened glue layer is inserted into the ferrule hole 135 together with the guide needle 110. Under the shaping action of the inner wall of the ferrule hole 135 on the unhardened glue layer, the glue fills the entire glue filling groove 111. After subsequent baking and curing, the second sealant layer 190 is formed. Here, the second sealant layer 190 is in contact with the inner wall of the ferrule hole 135 and fully fills the gap between the guide needle 110 and the inner wall of the ferrule hole 135, further improving the sealing effect between the guide needle 110 and the inner wall of the ferrule hole 135.

[0041] In some embodiments, the glue filling groove 111 is annular and annularly arranged on the circumferential surface of the guide needle 110. Specifically, the glue filling groove 111 is a circular annular groove. The center of the circular annular groove coincides with the center of the guide needle 110, so that the second sealant layer 190 in the glue filling groove 111 is annular and annularly arranged around the guide needle 110. The annular second sealant layer 190 can achieve 360° sealing around the guide needle 110, fully ensuring the sealing effect. Of course, in other embodiments of the utility model, the glue filling grooves 111 can also be discontinuously distributed on the circumferential surface of the guide needle 110 and designed to be staggered with each other, which can achieve the sealing effect while ensuring the structural strength of the guide needle 110.

[0042] In some embodiments, the glue filling groove 111 is a plurality of glue filling grooves. The plurality of glue filling grooves 111 are equally spaced on the circumferential surface of the guide needle 110. The second sealant layer 190 is formed in each glue filling groove 111. For example, the glue filling groove 111 can be 3. The 3 annular glue filling grooves 111 are uniformly distributed on the circumferential surface of the guide needle 110, so as to form 3 second sealant layers 190. The plurality of second sealant layers 190 can further improve the sealing effect.

[0043] Further, the outer diameter of the guide pin 110 is adapted to the inner diameter of the ferrule hole 135. The guide pin 110 is interference-fitted in the ferrule hole 135. The plurality of second sealant layers 190 are spaced apart from each other and are spaced apart from the first sealant layer 180. Specifically, three annular second sealant layers 190 are spaced apart from each other. Thus, the glue is not connected to each other when sealed, thereby forming a multi-segment isolated sealant layer structure. When one of the second sealant layers 190 fails, it will not easily affect the other second sealant layers 190 or the first sealant layer 180. In this way, the sealing reliability of the optical module sealing ferrule 100 to the glue is better.

[0044] Referring to Figure 5 In other preferred embodiments of the present application, the glue filling groove 111 is helical and helically distributed on the peripheral surface of the guide pin 110. Specifically, the glue filling groove 111 can be a continuous helical groove structure, so that the second sealant layer 190 is also helically distributed on the peripheral surface of the guide pin 110. The helical glue layer sealing structure can make the second sealant layer 190 fully contact the inner wall of the ferrule hole 135, and can form a multi-layer sealing structure, and the sealing effect is better.

[0045] Referring to Figures 1 to 3 In some embodiments, the first end surface 131 is provided with an optical fiber 150. The ferrule hole 135 is arranged on both sides of the optical fiber 150. The optical fiber 150 is arranged in the optical fiber hole 170. The guide pin 110 is arranged on both sides of the optical fiber hole 170. The optical fiber 150 and the optical fiber hole 170 are spaced apart from the ferrule hole 135. Specifically, the first end surface 131 is further provided with an optical fiber seat. The optical fiber 150 is arranged on the optical fiber seat. The optical fiber seat can be arranged on the first end surface 131. The optical fiber seat is provided with the ferrule hole 135 on both sides.

[0046] In some embodiments, the ferrule seat 130 includes an integrally arranged first seat body 137 and a second seat body 139. The width of the first seat body 137 is greater than the width of the second seat body 139. The first end surface 131 is arranged at one end of the first seat body 137 away from the second seat body 139. The second end surface 133 is arranged at one end of the second seat body 139 away from the first seat body 137. Specifically, the first seat body 137 and the second seat body 139 are integrally arranged and are both rectangular blocks. The first seat body 137 is arranged close to the optical device, and the second seat body 139 is arranged close to the external optical fiber connector. The widths of the first seat body 137 and the second seat body 139 are different, which can better identify the inner and outer sides of the ferrule seat 130. The first seat body 137 has a larger size, which can form a stepped structure, thereby better sealing and accommodating the ferrule seat 130 inside the cover plate of the optical module.

[0047] Referring to Figure 6 and Figure 7The utility model embodiment provides a kind of optical module 200.The optical module 200 includes cover plate 230, substrate 210, shell 250, optical device 270 and optical module sealing ferrule 100.Optical module sealing ferrule 100 includes guide needle 110, ferrule seat 130 and the optical fiber 150 in the ferrule seat 130.Ferrule seat 130 has opposite first end surface 131 and second end surface 133.Ferrule seat 130 is equipped with the ferrule hole 135 and the optical fiber hole 170 through first end surface 131 to second end surface 133.Guide needle 110 is correspondingly inserted in ferrule hole 135.One end of guide needle 110 protrudes from second end surface 133, and the other end is arranged in ferrule hole 135 and is spaced from first end surface 131.The first sealing glue layer 180 is formed in ferrule hole 135 between guide needle 110 and first end surface 131.Substrate 210 is arranged in shell 250, and ferrule seat 130 is arranged on substrate 210, and cover plate 230 is attached on substrate 210, and is formed with the sealed inner cavity for accommodating optical device with substrate 210.Optical device 270 is arranged in sealed inner cavity, and is optically connected with ferrule seat 130.One end of cover plate 230 is provided with the accommodation opening that is communicated to sealed inner cavity.Ferrule seat 130 is accommodated in accommodation opening.Cover plate 230 is attached on the surface of ferrule seat 130.

[0048] In the embodiment, substrate 210 can be PCB board.Meanwhile, cover plate 230 can be attached on the surface of second seat body 139 of ferrule seat 130, so as to accommodate first seat body 137, and expose second end surface 133 outside, facilitate the insertion of external socket.

[0049] Further, the airtight glue layer 211 for sealing inner cavity is arranged between substrate 210 and cover plate 230 and between ferrule seat 130 and cover plate 230.The sealing installation of cover plate 230 can be realized by sealing glue layer.Cover plate 230 is in contact with substrate 210 and second seat body 139 of ferrule seat 130 at the same time.The sealing is realized by airtight glue layer 211 at contact place, so as to guarantee the air-tightness of sealed inner cavity and external, effectively protect internal optical device 270.Meanwhile, airtight glue layer 211 can also effectively realize bonding and fixing, so as to fix substrate 210, cover plate 230 and ferrule seat 130 as a whole.

[0050] In summary, the optical module sealing ferrule 100 and the optical module 200 provided by the embodiments of the present application are provided, and the ferrule hole 135 penetrating from the first end face 131 to the second end face 133 is arranged in the ferrule seat 130. The guide needle 110 is correspondingly inserted into the ferrule hole 135. One end of the guide needle 110 protrudes from the second end face 133, and the other end is arranged in the ferrule hole 135. The first sealing glue layer 180 is formed in the ferrule hole 135 between the guide needle 110 and the first end face 131. Compared with the prior art, the one end of the guide needle 110 close to the first end face 131 is arranged in the ferrule hole 135 in a manner of being inwardly recessed, so that the inwardly recessed groove can be formed at the first end face 131. The inwardly recessed groove can be used as a glue filling space. Since the inwardly recessed groove forms sufficient glue filling space, the glue filling is convenient, and the filled glue layer can be in full contact with the guide needle, so that the sealing between the guide needle 110 and the first end face 131 is better, and the overall sealing effect of the optical module sealing ferrule 100 is also better.

[0051] The above merely provides preferred embodiments of the present application but is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An optical module sealing ferrule, characterized by, The optical fiber module comprises a guide pin, a ferrule seat and an optical fiber arranged in the ferrule seat; The ferrule seat has opposite first and second end faces, and a ferrule hole and an optical fiber hole are arranged in the ferrule seat and extend through the first end face to the second end face; The optical fiber is arranged in the optical fiber hole, one end of the optical fiber extends out of the first end face, and the other end of the optical fiber is cut off at the second end face; The guide pin is inserted into the ferrule hole, one end of the guide pin protrudes from the second end face, the other end of the guide pin is arranged in the ferrule hole in a recessed manner adjacent to the second end face, and is spaced from the first end face, and a first sealant layer is formed in the ferrule hole between the guide pin and the first end face to seal the ferrule hole.

2. The optical module ferrule of claim 1, wherein, The guide pin is a cylinder, a glue filling groove is arranged on the circumferential surface of the guide pin, the glue filling groove is located in the ferrule hole, and a second sealant layer is formed between the glue filling groove and the hole wall of the ferrule hole, and the second sealant layer is in contact with the inner wall of the ferrule hole.

3. The optical module ferrule of claim 2, wherein, The glue filling groove is annular and annularly arranged on the circumferential surface of the guide pin.

4. The optical module ferrule of claim 3, wherein, A plurality of glue filling grooves are arranged on the circumferential surface of the guide pin at equal intervals, and a second sealant layer is formed in each glue filling groove.

5. The optical module sealing ferrule of claim 4, wherein, The outer diameter of the guide pin is matched with the inner diameter of the ferrule hole, the guide pin is assembled in the ferrule hole in an interference fit, and the plurality of second sealant layers are separated from each other and spaced from the first sealant layer.

6. The optical module ferrule of claim 2, wherein, The glue filling groove is helical and helically arranged on the circumferential surface of the guide pin.

7. The optical module sealing ferrule of claim 1, wherein, The first end face is provided with an optical fiber, the ferrule hole is arranged on both sides of the optical fiber, the optical fiber is arranged in the optical fiber hole, and the guide pin is arranged on both sides of the optical fiber hole.

8. The optical module ferrule of claim 1, wherein, The ferrule seat comprises a first seat body and a second seat body arranged integrally, the width of the first seat body is greater than the width of the second seat body, the first end face is arranged at one end of the first seat body away from the second seat body, and the second end face is arranged at one end of the second seat body away from the first seat body.

9. An optical module characterized by comprising: The optical module comprises a cover plate, a substrate, a housing, an optical device and the sealed ferrule of any one of claims 1-8, the substrate is arranged in the housing, the ferrule seat is arranged on the substrate, the cover plate is arranged on the substrate in a close manner and forms a sealed inner cavity together with the substrate, the optical device is arranged in the sealed inner cavity and connected with the ferrule seat through the optical fiber, one end of the cover plate is further provided with a clearance opening communicating with the sealed inner cavity, the ferrule seat is arranged in the clearance opening, and the cover plate is connected with the surface of the ferrule seat.

10. The optical module according to claim 9, characterized by Airtight glue layers for sealing the sealed inner cavity are arranged between the substrate and the cover plate and between the ferrule seat and the cover plate.

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