CN216817011U

CN216817011U - MPO (maximum power output) bayonet adapter and optical module

Info

Publication number: CN216817011U
Application number: CN202220202329.6U
Authority: CN
Inventors: 舒坤
Original assignee: Wuhan Huagong Genuine Optics Tech Co Ltd
Current assignee: Wuhan Huagong Genuine Optics Tech Co Ltd
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-06-24
Anticipated expiration: 2032-01-25

Abstract

The utility model discloses an MPO (maximum output power) bayonet adapter and an optical module, which belong to the technical field of optical communication and comprise a bayonet mechanism and a MT (terminal) ferrule with a tail, wherein the bayonet mechanism comprises a shell, and an interface at one end of the shell is provided with a collimating groove, a first buckle and a second buckle, the first buckle and the second buckle surround to form a limiting groove, the first buckle is provided with a first guide angle, the second buckle is provided with a second guide angle, and the collimating groove is positioned in the shell; the MT ferrule with the tail comprises a tail end limiting structure and an MT positioning structure matched with the collimation groove, the tail end limiting structure is clamped with the first buckle and the second buckle respectively, and the tail end limiting structure is positioned in the limiting groove; the MT positioning structure is movably arranged in the collimation groove. The utility model achieves the technical effects of improving the alignment precision and reducing the optical power loss caused by the plugging and unplugging of the optical fiber.

Description

MPO (maximum power output) bayonet adapter and optical module

Technical Field

The utility model belongs to the technical field of optical communication, and particularly relates to an MPO (maximum power output) bayonet adapter and an optical module.

Background

The MPO connector is a multi-fiber optical connector adopted by the IEEE standard as one of 40G/100G transmission connector types. The interface is widely applied to high-density environment application of data centers, application of optical fibers to buildings, external interfaces of QSFP28, QSFP-DD, OSFP and CFP series optical access equipment. The MPO bayonet is an MPO optical interface formed by the optical module application, an optical module shell and an MT insertion core inside the optical module, can be in butt joint with an optical fiber of MPO to realize transmission of an optical path, and optical power loss caused by butt joint of the optical fiber and the optical interface of the optical module is an important index in performance indexes of the optical module.

At present, in the existing optical communication technology, MPO is mostly used for multi-mode and multi-channel products in traditional application, the diameter of a fiber core of a multi-mode optical fiber is 50 μm, and the allowable butt joint tolerance is also relatively large, so that the requirement on the alignment precision of an MPO bayonet adapter and an MT ferrule is not very high. However, with the change of application scenarios, more and more single-mode multichannel products also start to adopt schemes of MPO interfaces, and compared with multimode products, the single-mode product optical fiber has a smaller fiber core diameter, and a smaller fiber core means that the precision requirement of butt joint can be correspondingly improved, the alignment precision between the existing MPO bayonet adapter and the MT ferrule is lower, and the insertion loss index of the optical interface of the optical module is higher.

In summary, in the conventional optical communication technology, there are technical problems that the alignment precision is low and the optical power loss caused by plugging and unplugging of the optical fiber is high in the assembling process of the MPO bayonet and the MT ferrule.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems that in the process of assembling an MPO bayonet and an MT ferrule, the alignment precision is low, and the optical power loss caused by plugging and unplugging of optical fibers is high.

In order to solve the above technical problem, the present invention provides an MPO bayonet adapter, including: the bayonet mechanism comprises a shell, and an interface at one end of the shell is provided with a collimation groove, a first buckle and a second buckle, the first buckle and the second buckle surround to form a limiting groove, the first buckle is provided with a first guide angle, the second buckle is provided with a second guide angle, and the collimation groove is positioned in the shell; the MT insertion core with the tail comprises a tail end limiting structure and an MT positioning structure matched with the collimation groove, the tail end limiting structure is respectively clamped with the first buckle and the second buckle, and the tail end limiting structure is positioned in the limiting groove; the MT positioning structure is movably arranged in the collimation groove.

Further, the bayonet mechanism further comprises: the lateral surface collimation positioning surface is attached to the MT positioning structure, the upper collimation positioning surface and the lower collimation positioning surface are attached to the MT positioning structure, and the lateral surface collimation positioning surface and the upper collimation positioning surface and the lower collimation positioning surface surround the collimation groove.

Furthermore, the first buckle also comprises a first limiting surface, and the first limiting surface is attached to the tail end limiting structure; the second buckle further comprises a second limiting surface, the second limiting surface is attached to the tail end limiting structure, and the first limiting surface and the second limiting surface surround the limiting groove.

Further, the first limiting surface is positioned between the collimation groove and the first guide angle; the second limiting surface is located between the collimation groove and the second guide angle.

Further, the first guide angle is inclined, the second guide angle is inclined, and a guide area formed by the first guide angle and the second guide angle is gradually enlarged.

Further, the MT positioning structure and the tail end limiting structure are stepped along a direction close to the first guide angle.

According to another aspect of the present invention, the present invention further provides an optical module, including a base, an upper cover covering the base, and further including the MPO bayonet adapter, the optical module including: the MPO bayonet adapter is arranged in a space enclosed by the base and the upper cover.

Furthermore, a positioning groove is arranged outside the shell; the base includes: and the positioning boss is clamped with the positioning groove.

Has the advantages that:

the utility model provides an MPO bayonet adapter, which is characterized in that a collimating groove, a first buckle and a second buckle in a bayonet mechanism are arranged at an interface at one end of a shell, the first buckle and the second buckle surround to form a limiting groove, the first buckle is provided with a first guide angle, the second buckle is provided with a second guide angle, and the collimating groove is positioned in the shell. The tail end limiting structure in the MT insertion core with the tail is respectively clamped with the first buckle and the second buckle, the tail end limiting structure is located in the limiting groove, and the MT positioning structure matched with the collimation groove is movably arranged in the collimation groove. Therefore, in the assembly process of the MPO bayonet and the MT inserting core, the MT inserting core can be inserted into a guide area formed by the first guide angle and the second guide angle, the tail end limiting structure in the MT inserting core with the tail is clamped with the first buckle and the second buckle respectively, the MT inserting core can not move back and forth along the inserted direction, the MT positioning structure in the MT inserting core with the tail is embedded into the collimating slot, the directions around the MT inserting core are limited through the collimating slot, and the position of the MT inserting core is fixed. And then, in the assembling process of the MPO bayonet and the MT ferrule, the alignment precision can be improved, and the optical power loss caused by the insertion and extraction of the optical fiber is reduced. Therefore, the technical effects of improving the alignment precision and reducing the optical power loss caused by the insertion and extraction of the optical fiber are achieved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a first schematic diagram of an MPO bayonet adapter according to an embodiment of the present invention;

fig. 2 is a second schematic diagram of an MPO bayonet adapter according to an embodiment of the present invention;

fig. 3 is a third schematic diagram of an MPO bayonet adapter according to an embodiment of the present invention;

FIG. 4 is a fourth schematic diagram of an MPO bayonet adapter according to an embodiment of the present invention;

FIG. 5 is a fifth schematic diagram of an MPO bayonet adapter according to an embodiment of the present invention;

FIG. 6 is a sixth schematic view of an MPO bayonet adapter according to an embodiment of the present invention;

fig. 7 is a seventh schematic diagram of an MPO bayonet adapter according to an embodiment of the present invention;

fig. 8 is an eighth schematic diagram of an MPO bayonet adapter according to an embodiment of the present invention;

fig. 9 is a ninth schematic diagram of an MPO bayonet adapter according to an embodiment of the present invention;

fig. 10 is a schematic diagram ten of an MPO bayonet adapter according to an embodiment of the present invention.

Detailed Description

The utility model discloses an MPO bayonet adapter, wherein a collimating groove, a first buckle 22 and a second buckle 23 in a bayonet mechanism are arranged at an interface at one end of a shell, the first buckle 22 and the second buckle 23 surround to form a limiting groove, the first buckle 22 is provided with a first guide angle 222, the second buckle 23 is provided with a second guide angle 232, and the collimating groove is positioned in the shell. Tail end limit structure 31 is mutually blocked with first buckle 22 and second buckle 23 respectively in the MT lock pin 3 of tape tail, and tail end limit structure 31 is located the spacing groove, and the MT location structure 32 that matches with the collimation groove is movable to be set up in the collimation groove. Therefore, in the process of assembling the MPO bayonet and the MT ferrule, the MT ferrule can be inserted into a guide area formed by the first guide angle 222 and the second guide angle 232, the tail end limiting structure 31 in the tape tail MT ferrule 3 is clamped with the first buckle 22 and the second buckle 23 respectively, the MT ferrule cannot move back and forth along the insertion direction, the MT positioning structure 32 in the tape tail MT ferrule 3 is embedded into the collimation groove and then limits the directions around the MT ferrule through the collimation groove, and the position of the MT ferrule is fixed. And then, in the assembling process of the MPO bayonet and the MT ferrule, the alignment precision can be improved, and the optical power loss caused by the insertion and extraction of the optical fiber is reduced. Therefore, the technical effects of improving the alignment precision and reducing the optical power loss caused by the insertion and extraction of the optical fiber are achieved.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention; the "and/or" keyword referred to in this embodiment represents sum or two cases, in other words, a and/or B mentioned in the embodiment of the present invention represents two cases of a and B, A or B, and describes three states where a and B exist, such as a and/or B, which represents: only A does not include B; only B does not include A; including A and B.

It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments. Spatially relative terms, such as "below," "above," and the like, may be used herein to facilitate describing one element or feature's relationship to another element or feature. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "lower" would then be oriented "upper" other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Also, in embodiments of the utility model where an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used in the embodiments of the present invention are for illustrative purposes only and are not intended to limit the present invention.

Example one

Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9 and fig. 10, fig. 1 is a first schematic diagram of an MPO bayonet adapter according to an embodiment of the present invention, fig. 2 is a second schematic diagram of an MPO bayonet adapter according to an embodiment of the present invention, fig. 3 is a third schematic diagram of an MPO bayonet adapter according to an embodiment of the present invention, fig. 4 is a fourth schematic diagram of an MPO bayonet adapter according to an embodiment of the present invention, fig. 5 is a fifth schematic diagram of an MPO bayonet adapter according to an embodiment of the present invention, fig. 6 is a sixth schematic diagram of an MPO bayonet adapter according to an embodiment of the present invention, fig. 7 is a seventh schematic diagram of an MPO bayonet adapter according to an embodiment of the present invention, fig. 8 is an eighth schematic diagram of an MPO bayonet adapter according to an embodiment of the present invention, fig. 9 is a ninth schematic diagram of an MPO bayonet adapter according to an embodiment of the present invention, fig. 10 is a schematic diagram ten of an MPO bayonet adapter according to an embodiment of the present invention. The MPO bayonet adapter provided by the embodiment of the utility model comprises a bayonet mechanism and a MT insertion core 3 with a tail, wherein the bayonet mechanism and the MT insertion core 3 with the tail are respectively explained in detail as follows:

for the bayonet mechanism and the pigtail MT ferrule 3:

bayonet socket mechanism includes the casing, is provided with collimation groove, first buckle 22 and second buckle 23 in the one end interface of casing, first buckle 22 with second buckle 23 surrounds and forms the spacing groove, first buckle 22 is provided with first guide angle 222, second buckle 23 is provided with second guide angle 232, the collimation groove is located in the casing. The first buckle 22 further comprises a first limiting surface 221, and the first limiting surface 221 is attached to the tail end limiting structure 31; the second buckle 23 further includes a second limiting surface 231, the second limiting surface 231 is attached to the tail end limiting structure 31, and the first limiting surface 221 and the second limiting surface 231 surround the limiting groove. The first limiting surface 221 is located between the collimating groove and the first guiding angle 222; the second stopper surface 231 is located between the collimating slot and the second guiding angle 232. The bayonet mechanism further comprises a side surface collimation positioning surface 25, an upper collimation positioning surface and a lower collimation positioning surface 24, the side surface collimation positioning surface 25 is attached to the MT positioning structure 32, the upper collimation positioning surface and the lower collimation positioning surface 24 are attached to the MT positioning structure 32, and the side surface collimation positioning surface 25 and the upper collimation positioning surface and the lower collimation positioning surface 24 surround the collimation groove. The first guide angle 222 is inclined, the second guide angle 232 is inclined, and the guide area formed by the first guide angle 222 and the second guide angle 232 is gradually enlarged.

In addition, the MT ferrule 3 with the tail comprises a tail end limiting structure 31 and an MT positioning structure 32 matched with the collimating groove, the tail end limiting structure 31 is respectively clamped with the first buckle 22 and the second buckle 23, and the tail end limiting structure 31 is located in the limiting groove; the MT positioning structure 32 is movably disposed in the collimating slot. Wherein, the MT positioning structure 32 and the tail end limiting structure 31 are stepped along a direction approaching to the first guiding angle 222.

Specifically, the first latch 22 and the second latch 23 are disposed at one end of the housing, the first latch 22 may be an upper elastic latch, the upper elastic latch may have sufficient elasticity when the MT ferrule (i.e., the MT ferrule 3 with tail) is inserted, the second latch 23 may be an upper elastic latch, and the lower elastic latch may also have sufficient elasticity when the MT ferrule is inserted. First buckle 22 and second buckle 23 set up opposite each other, and first buckle 22 can include 2 buckles, as shown in fig. 1, and the right-hand member of buckle is provided with first guide angle 222, and the left end of buckle is provided with first spacing face 221. The second buckle 23 may also include 2 buckles, as shown in fig. 1, a second guide angle 232 is disposed at the right end of the buckle, and a second limiting surface 231 is disposed at the left end of the buckle. The first guiding angle 222 and the second guiding angle 232 surround to form a guiding area, the guiding area is in a gradually expanding shape, and the guiding area can guide the MT ferrule to be inserted from the guiding area formed by the first guiding angle 222 and the second guiding angle 232 towards the direction close to the limiting groove. A space for accommodating the following MT ferrule middle tail end limiting structure 31 is formed in a limiting groove formed between the first limiting surface 221 and the second limiting surface 231, and the MT ferrule middle tail end limiting structure 31 can be inserted into the limiting groove and can be attached to the first limiting surface 221 and the second limiting surface 231.

It should be noted that the tail end limiting structure 31 in the MT ferrule 3 with the tail can be respectively clamped with the first buckle 22 and the second buckle 23, for example, the tail end limiting structure 31 in the MT ferrule can be clamped by the first guide angle 222 and the second guide angle 232 after being embedded into the limiting groove, so that the tail end limiting structure 31 in the MT ferrule is fixed in the vertical and horizontal directions. The MT positioning structure 32 in the MT insertion core can be matched with the collimation groove, the side surface collimation positioning surface 25 and the upper and lower collimation positioning surfaces 24 surround to form the collimation groove, the matching length of the side surface collimation positioning surface 25, the upper and lower collimation positioning surfaces 24 and the MT insertion core needs to exceed 4mm, namely the length of the surface of the side surface collimation positioning surface 25, the upper and lower collimation positioning surfaces 24, which is in contact with the MT insertion core, is larger than 4mm, so that the inclination of the MT insertion core can be prevented, and meanwhile, the matching gap between the MT positioning structure and the MT is controlled within 0.1 mm. The side alignment positioning surface 25 may include a left horizontal surface and a right horizontal surface such that the MT positioning structure 32 is fixed in a left-right direction by abutting the MT positioning structure 32 against the left horizontal surface and the right horizontal surface, respectively. The upper and lower collimating positioning surfaces 24 may include an upper horizontal surface and a lower horizontal surface, such that the MT positioning structure 32 is fixed in the up-down direction by abutting the MT positioning structure 32 against the upper horizontal surface and the lower horizontal surface, respectively.

The utility model provides an MPO bayonet adapter, which is characterized in that a collimating groove, a first buckle 22 and a second buckle 23 in a bayonet mechanism are arranged at an interface at one end of a shell, the first buckle 22 and the second buckle 23 surround to form a limiting groove, the first buckle 22 is provided with a first guide angle 222, the second buckle 23 is provided with a second guide angle 232, and the collimating groove is positioned in the shell. Tail end limit structure 31 is mutually blocked with first buckle 22 and second buckle 23 respectively in the MT lock pin 3 of tape tail, and tail end limit structure 31 is located the spacing groove, and the MT location structure 32 that matches with the collimation groove is movable to be set up in the collimation groove. Therefore, in the process of assembling the MPO bayonet and the MT ferrule, the MT ferrule can be inserted into a guide area formed by the first guide angle 222 and the second guide angle 232, the tail end limiting structure 31 in the tape tail MT ferrule 3 is clamped with the first buckle 22 and the second buckle 23 respectively, the MT ferrule cannot move back and forth along the insertion direction, the MT positioning structure 32 in the tape tail MT ferrule 3 is embedded into the collimation groove and then limits the directions around the MT ferrule through the collimation groove, and the position of the MT ferrule is fixed. And then, in the assembling process of the MPO bayonet and the MT ferrule, the alignment precision can be improved, and the optical power loss caused by the insertion and extraction of the optical fiber is reduced. Therefore, the technical effects of improving the alignment precision and reducing the optical power loss caused by the insertion and extraction of the optical fiber are achieved.

In order to describe the optical module provided by the utility model in detail, the embodiment (the name of the utility model) is described in detail, and based on the same utility model concept, the application also provides an optical module, which is described in detail in embodiment two.

Example two

An embodiment of the present invention provides an optical module, including a base 4, and an upper cover 1 covering the base 4, and further including the MPO bayonet adapter, where the optical module includes: the MPO bayonet adapter is arranged in a space enclosed by the base 4 and the upper cover 1. A positioning groove 26 is arranged outside the shell; the base 4 includes: and the positioning boss 41 is clamped with the positioning groove 26. Be provided with constant head tank 26 in the outside of casing promptly, constant head tank 26 can present the recess with location boss 41 assorted for after location boss 41 imbeds constant head tank 26 in base 4, the casing is fixed on base 4, can restrict the removal of casing at the length direction of base 4. The base 4 may further be provided with an MPO bayonet adapter fastening surface 42, a reserved dispensing slot 43, and an optical fiber insertion clearance 44, where the MPO bayonet adapter fastening surface 42 and the mounting surface 21 of the MPO bayonet adapter are matched with each other, so that the MPO bayonet adapter fastening surface 42 and the mounting surface 21 of the MPO bayonet adapter are attached to each other. The glue can be dispensed and fixed through the reserved glue dispensing groove 43, and a better fixing effect is achieved.

The utility model provides an optical module, wherein a collimating groove in a bayonet mechanism, a first buckle 22 and a second buckle 23 are arranged at an end interface of a shell, the first buckle 22 and the second buckle 23 surround to form a limiting groove, the first buckle 22 is provided with a first guide angle 222, the second buckle 23 is provided with a second guide angle 232, and the collimating groove is positioned in the shell. Tail end limit structure 31 is mutually blocked with first buckle 22 and second buckle 23 respectively in the MT lock pin 3 of tape tail, and tail end limit structure 31 is located the spacing groove, and the MT location structure 32 that matches with the collimation groove is movable to be set up in the collimation groove. The bayonet mechanism and the MT insertion core 3 with the tail are arranged in a space enclosed by the base 4 and the upper cover 1. Therefore, in the process of assembling the MPO bayonet and the MT ferrule, the MT ferrule can be inserted into a guide area formed by the first guide angle 222 and the second guide angle 232, the tail end limiting structure 31 in the tape tail MT ferrule 3 is clamped with the first buckle 22 and the second buckle 23 respectively, the MT ferrule cannot move back and forth along the insertion direction, the MT positioning structure 32 in the tape tail MT ferrule 3 is embedded into the collimation groove and then limits the directions around the MT ferrule through the collimation groove, and the position of the MT ferrule is fixed. And then, in the assembling process of the MPO bayonet and the MT ferrule, the alignment precision can be improved, and the optical power loss caused by the insertion and extraction of the optical fiber is reduced. Therefore, the technical effects of improving the alignment precision and reducing the optical power loss caused by the insertion and extraction of the optical fiber are achieved.

Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims

1. An MPO bayonet adapter, comprising: the bayonet mechanism comprises a shell, and an interface at one end of the shell is provided with a collimation groove, a first buckle and a second buckle, the first buckle and the second buckle surround to form a limiting groove, the first buckle is provided with a first guide angle, the second buckle is provided with a second guide angle, and the collimation groove is positioned in the shell; the MT insertion core with the tail comprises a tail end limiting structure and an MT positioning structure matched with the collimation groove, the tail end limiting structure is respectively clamped with the first buckle and the second buckle, and the tail end limiting structure is positioned in the limiting groove; the MT positioning structure is movably arranged in the collimation groove.

2. The MPO bayonet adapter of claim 1, wherein said bayonet mechanism further comprises:

the lateral surface collimation positioning surface is attached to the MT positioning structure, the upper collimation positioning surface and the lower collimation positioning surface are attached to the MT positioning structure, and the lateral surface collimation positioning surface and the upper collimation positioning surface and the lower collimation positioning surface surround the collimation groove.

3. The MPO bayonet adapter of claim 1, wherein:

the first buckle also comprises a first limiting surface, and the first limiting surface is attached to the tail end limiting structure;

the second buckle further comprises a second limiting surface, the second limiting surface is attached to the tail end limiting structure, and the first limiting surface and the second limiting surface surround the limiting groove.

4. The MPO bayonet adapter of claim 3, wherein:

the first limiting surface is positioned between the collimation groove and the first guide angle;

the second limiting surface is located between the collimation groove and the second guide angle.

5. The MPO bayonet adapter of claim 1, wherein:

the first guide angle is inclined, the second guide angle is inclined, and a guide area formed by the first guide angle and the second guide angle is in a gradually expanding shape.

6. The MPO bayonet adapter of claim 1, wherein:

the MT positioning structure and the tail end limiting structure are in a step shape along the direction close to the first guide angle.

7. A photonics module comprising a base, a cover disposed over the base, and the MPO bayonet adapter of any one of claims 1 to 6, the photonics module comprising:

the MPO bayonet adapter is arranged in a space enclosed by the base and the upper cover.

8. The light module of claim 7, wherein:

a positioning groove is arranged outside the shell;

the base includes: and the positioning boss is clamped with the positioning groove.