CN213843600U - Socket type MPO connector, plug type MPO connector and connection structure of socket type MPO connector and plug type MPO connector - Google Patents
Socket type MPO connector, plug type MPO connector and connection structure of socket type MPO connector and plug type MPO connector Download PDFInfo
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- CN213843600U CN213843600U CN202023079407.8U CN202023079407U CN213843600U CN 213843600 U CN213843600 U CN 213843600U CN 202023079407 U CN202023079407 U CN 202023079407U CN 213843600 U CN213843600 U CN 213843600U
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Abstract
The utility model relates to the technical field of MPO connectors, and discloses a socket type MPO connector, a plug type MPO connector and a connecting structure of the two; the socket type MPO connector comprises: the body is provided with a first end part and a second end part far away from the first end part, and a plurality of first through holes penetrating through the first end part and the second end part are formed in the body; the body is also provided with two mounting holes; the optical fibers sequentially penetrate through the first through holes, and one ends of the optical fibers protrude out of the first end parts; an end of the optical fiber proximate the first end is coated with an anti-reflective coating. The utility model has the advantages of, one deck antireflection coating has been plated to the tip of this optic fibre, loss when can effectively preventing optical transmission, and this antireflection coating belongs to the stereoplasm material, and tip deformation when can effectively improving MPO connector plug makes its life longer.
Description
Technical Field
The utility model relates to a MPO connector technical field especially relates to a socket type MPO connector, plug type MPO connector and connection structure between them.
Background
The MPO connector mainly comprises: and the male MPO connector and the female MPO connector are butted and fixed through the MPO adapters in the use process. The two guide pins of the male MPO connector are respectively butted with the two jacks of the female MPO connector, the butting precision is ensured, and the optical fibers of the male MPO connector and the female MPO connector are in one-to-one contact, so that optical signals are transmitted from one connector to the other connector.
The existing MPO connector head processing and grinding can generate different parameters such as the height, the curvature radius, the central depression of optical fibers and the like. And two parameters of the height of the optical fiber and the central depression of the optical fiber are sensitive to the influence of insertion loss and return loss under normal production and are difficult to produce. Under normal grinding, the height difference of the optical fiber can be controlled within 200nm generally, and the central recess of the optical fiber is controlled within 100 nm. When two MPO connectors are mated: some optical fibers will come into contact; some of them have gaps at the joints because the height of the optical fibers is different from the central depression of the optical fibers. The optical signal of the contacted optical fiber can be directly transmitted to the optical fiber at the other end from the optical fiber at one end through the contact surface; and the optical signals can be transmitted into the optical fiber from the optical fiber at one end to the air through the contact surface and then to the contact surface at the other end by the butt joint with gaps. The optical fiber channels are contacted, and the optical transmission is carried out in the same optical fiber material, so that the loss is smaller; in the gapped fiber channel, because the refractive indexes of the fiber and the air are different, the light will generate a part of reflection loss from the fiber to the air, and the air will generate a part of reflection loss from the fiber to the fiber. That is, in the multi-core MPO fiber connector, the physical parameters such as the height of each fiber are different due to the problem that the production process cannot overcome, so that some fiber channels are in contact with each other when the two connectors are butted, and gaps are formed in the middle of some fiber channels, which causes large loss in optical signal transmission.
On the other hand, MPO connectors are sensitive to dust, have poor plugging repeatability, and are prone to end face damage and the like.
SUMMERY OF THE UTILITY MODEL
The above-mentioned not enough to prior art exists, the utility model discloses the technical problem that will solve lies in: a socket type MPO connector, a plug type MPO connector and a connection structure of the socket type MPO connector and the plug type MPO connector are provided, wherein the socket type MPO connector and the plug type MPO connector are low in optical transmission signal loss, stable in structure and long in service life.
The utility model provides a technical scheme that its technical problem adopted is, provides a socket type MPO connector, including:
the body is provided with a first end part and a second end part far away from the first end part, and a plurality of first through holes penetrating through the first end part and the second end part are formed in the body; the body is also provided with two mounting holes;
the optical fibers sequentially penetrate through the first through holes, and one ends of the optical fibers protrude out of the first end part; and one end of the optical fiber close to the first end part is covered with an anti-reflection layer.
Furthermore, the anti-reflection layer is made of tantalum pentoxide; and the anti-reflection layer is plated at one end of the optical fiber close to the first end part.
Further, the number of the optical fibers is an integral multiple of four; and a plurality of the optical fibers are arranged on the body in a single row or a plurality of rows.
Furthermore, a second through hole is formed in the middle of the body and communicated with the first through hole; all the optical fibers penetrate through the second through hole.
Further, the second through hole is a rectangular hole or a square hole.
Further, the two mounting holes penetrate through the first end portion and the second end portion and are respectively located on two sides of the optical fibers.
The utility model provides a technical scheme that its technical problem adopted is, still provides a plug formula MPO connector, including:
the body is provided with a first end part and a second end part far away from the first end part, and a plurality of first through holes penetrating through the first end part and the second end part are formed in the body; the body is also provided with two mounting holes;
the optical fibers sequentially penetrate through the first through holes, and one ends of the optical fibers protrude out of the first end part; one end of the optical fiber close to the first end part is covered with an anti-reflection layer;
the two guide pins are respectively arranged in the two mounting holes; and one end of the guide pin protrudes on the first end part.
Furthermore, a guide head is arranged at the top of the guide pin, and the section of the guide head is gradually increased from top to bottom.
The utility model provides a technical scheme that its technical problem adopted is, still provides a connection structure of socket type MPO connector and plug type MPO connector, including:
the above-described receptacle type MPO connector;
the above-described plug-type MPO connector; and
an MPO adapter;
the MPO adapter is arranged between the socket type MPO connector and the plug type MPO connector, and two guide pins of the plug type MPO connector are respectively inserted into two mounting holes of the socket type MPO connector;
the optical fibers of the socket type MPO connector correspond to the optical fibers of the plug type MPO connector one to one.
Compared with the prior art, the utility model discloses following beneficial effect has at least:
the utility model discloses in, first through-hole runs through first end and second end, optic fibre is worn to establish in first through-hole, and the one end protrusion first end that is close to the first end of optic fibre, and it has one deck antireflection coating to cover at this end, this antireflection coating can be tantalum pentoxide layer, this tantalum pentoxide layer makes the loss of light transmission in the optic fibre to the air reduce greatly, can reduce light from air transmission to optic fibre simultaneously, when finally making each fiber connection of MPO connector, can effectively reduce the loss of light, guarantee the transmission quality of optic fibre, and whether the optic fibre of plug type connector or socket type connector two spare has the clearance, can both guarantee the transmission quality of light. On the other hand, the tantalum pentoxide layer has higher hardness, can effectively reduce the deformation of the optical fiber in the repeated plugging and unplugging process and overcome the problem of easy damage to the end face of the optical fiber, and has good structural stability and long service life.
Drawings
FIG. 1 is a schematic view of the overall structure of a receptacle type MPO connector according to the present invention;
FIG. 2 is a schematic view of the overall structure of the plug type MPO connector of the present invention;
FIG. 3 is a schematic diagram of the mating of both plug and receptacle type MPO connectors and an enlarged view (with the MPO adapter omitted);
FIG. 4 is an exploded view of FIG. 3;
FIG. 5 is a schematic diagram of the transmission of light after the two gapless optical fibers (without cladding) are spliced;
FIG. 6 is a schematic diagram of the transmission of light after the two non-spaced optical fibers (with coatings) are butted together;
FIG. 7 is a schematic diagram of the transmission of light after the two spaced fibers (without cladding) are butted together;
fig. 8 is a schematic diagram of the transmission of light after the two spaced fibers (coated) are spliced.
In the figure, the position of the upper end of the main shaft,
1. a body; 10. a first end portion; 11. a second end portion; 12. a first through hole; 13. mounting holes; 14. a second through hole;
2. an optical fiber; 20. an anti-reflection layer;
3. guiding a needle; 30. a guide head;
A. a receptacle MPO connector; B. a plug type MPO connector.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1, a receptacle-type MPO connector includes: the body 1 is provided with a first end part 10 and a second end part 11 far away from the first end part 10, and a plurality of first through holes 12 penetrating through the first end part 10 and the second end part 11 are arranged on the body 1; the body 1 is also provided with two mounting holes 13; a plurality of optical fibers 2 sequentially inserted into the first through holes 12, and one end of each optical fiber protrudes from the first end 10; the end of the optical fiber 2 near the first end 10 is coated with an anti-reflection coating 20. The material of the anti-reflection layer 20 is tantalum pentoxide, but the material is not limited to tantalum pentoxide, and may be other materials with better anti-reflection function; and the anti-reflection layer 20 is plated on the end of the optical fiber 2 close to the first end portion 10. It is to be explained that tantalum pentoxide is a white colorless crystalline powder, which is an oxide of tantalum, which is a final product produced by burning tantalum in air. Can be used for manufacturing special optical glass with high refraction and low dispersion. The two mounting holes 13 penetrate through the first end portion 10 and the second end portion 11, and are respectively located on two sides of the optical fibers 2.
In the scheme, one end of the optical fiber 2, which is close to the first end 10, protrudes out of the first end 10, and the end is covered with the anti-reflection layer 20, the anti-reflection layer 20 is a tantalum pentoxide layer, the loss of light in the optical fiber 2 transmitted to the air is greatly reduced by the tantalum pentoxide layer, meanwhile, the light can be reduced from the air transmitted to the optical fiber 2, and finally, when each optical fiber 2 of the MPO connector is connected, the loss of light can be effectively reduced, the transmission quality of the optical fiber 2 is ensured, and the transmission quality of light can be ensured no matter whether the optical fibers of the plug type connector or the socket type connector have gaps or not.
On the other hand, the tantalum pentoxide layer has higher hardness, can effectively reduce the end deformation of the optical fiber 2 in the repeated plugging process and overcome the problem of easy damage to the end face, and has good structural stability and long service life.
Specifically, the number of the optical fibers 2 is an integral multiple of four; and a plurality of the optical fibers 2 are arranged on the body 1 in a single row or a plurality of rows, for example, the number of the optical fibers 2 is 8, 12 or 24, and the like, and the number corresponds to 8, 12 and 24 cores, and the like. When the number is more, the core can be arranged in a plurality of rows, and the number of the cores in each row can also be 8 cores, 12 cores, 16 cores and the like.
Preferably, a second through hole 14 is formed in the middle of the body 1, and the second through hole 14 is communicated with the first through hole 12; all the optical fibers 2 are inserted into the second through holes 14. Wherein the second through hole 14 is a rectangular hole or a square hole. Because the second through holes 14 are communicated with the plurality of first through holes 12, and all the optical fibers 2 are arranged in the second through holes 14 in a penetrating manner, glue can be coated into the first through holes 12 at the second through holes 14 after the optical fibers are arranged in the penetrating manner, so that the structural stability of the optical fibers 2 arranged in the body 1 in a penetrating manner is ensured.
As shown in fig. 2, a plug-type MPO connector according to the present invention includes: the body 1 is provided with a first end part 10 and a second end part 11 far away from the first end part 10, and a plurality of first through holes 12 penetrating through the first end part 10 and the second end part 11 are arranged on the body 1; the body 1 is also provided with two mounting holes 13; a plurality of optical fibers 2 sequentially inserted into the first through holes 12, and one end of each optical fiber protrudes from the first end 10; one end of the optical fiber 2 close to the first end part 10 is covered with an anti-reflection layer 20; the two guide pins 3 are respectively arranged in the two mounting holes 13; and one end of the guide pin 3 protrudes over the first end portion 10.
Compared with the socket type MPO connector A, the plug type MPO connector B has more metal guide pins 3 on two sides and is arranged in the mounting hole 13. When the socket type MPO connector A is connected with the plug type MPO connector B, the guide pin 3 on the plug type MPO connector B is inserted into the mounting hole 13 of the socket type MPO connector A, the accurate positions of the two are ensured, the top of the guide pin 3 is provided with a guide head 30, the section of the guide head 30 is gradually increased from top to bottom, and the guide head 30 is arranged, so that the guide pin 3 can be conveniently inserted into the mounting hole 13 of the socket type MPO connector A.
As shown in fig. 3 to 4, a connection structure of a receptacle type MPO connector a and a plug type MPO connector B according to the present invention includes: a socket MPO connector A and a plug MPO connector B; and MPO adapters (not shown in the figures); wherein the MPO adapter is arranged between the socket type MPO connector A and the plug type MPO connector B, and the two guide pins 3 of the plug type MPO connector B are respectively inserted into the two mounting holes 13 of the socket type MPO connector A; the optical fibers 2 of the receptacle type MPO connector a correspond to the optical fibers 2 of the plug type MPO connector B one to one.
As shown in fig. 5, in the optical fiber 2 without the antireflection layer 20, when the two optical fibers 2 are butted without a gap, the transmission medium is the same when light is transmitted from one optical fiber to the other optical fiber due to the contact therebetween, the transmission path of light is hardly changed, and the transmission quality is high.
As shown in fig. 6, in the optical fiber 2 having the antireflection layer 20, when the two optical fibers 2 are butted without a gap, similarly, when light is transmitted from one optical fiber to the other, since the two optical fibers are in contact with each other, the transmission medium is the same, the transmission path of the light is hardly changed, and the transmission quality is high.
As shown in fig. 7, in the optical fiber 2 without the anti-reflection layer 20, when two optical fibers 2 are in gap butt joint, when light is transmitted from one optical fiber to another optical fiber, since the two optical fibers are not in contact, there is a gap, the light needs to be transmitted from the optical fiber to air first, and then transmitted from the air to another optical fiber, the transmission medium is changed, and the light is emitted during transmission, that is, the light generates a part of loss from the optical fiber to the air, and the air generates a part of loss from the air to the optical fiber, so that the transmission quality cannot be ensured.
As shown in fig. 8, in the optical fiber 2 having the anti-reflection layer 20, when the two optical fibers 2 are in gap butt joint, when light is transmitted from one optical fiber to the other optical fiber, since the two optical fibers are not in contact with each other, there is a gap, but since the anti-reflection layer 20 is provided at both ends of the two optical fibers, the loss of light from the optical fiber to the air and from the air to the optical fiber can be greatly reduced, and the transmission quality of light can be effectively ensured.
In the scheme, one end of the optical fiber 2 is plated with the anti-reflection layer 20, so that loss in optical transmission can be effectively prevented, the anti-reflection layer 20 is made of tantalum pentoxide and belongs to a hard material, deformation of the optical fiber 2 in plugging and unplugging can be effectively improved, and the service life is long.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (9)
1. A receptacle MPO connector, comprising:
the body is provided with a first end part and a second end part far away from the first end part, and a plurality of first through holes penetrating through the first end part and the second end part are formed in the body; the body is also provided with two mounting holes;
the optical fibers sequentially penetrate through the first through holes, and one ends of the optical fibers protrude out of the first end part; and one end of the optical fiber close to the first end part is covered with an anti-reflection layer.
2. A receptacle MPO connector according to claim 1, wherein the anti-reflection layer is tantalum pentoxide; and the anti-reflection layer is plated at one end of the optical fiber close to the first end part.
3. A receptacle MPO connector according to claim 1, wherein the number of optical fibers is an integer multiple of four; and a plurality of the optical fibers are arranged on the body in a single row or a plurality of rows.
4. The receptacle type MPO connector according to claim 1, wherein a second through hole is formed in the middle of the body, and the second through hole is communicated with the first through hole; all the optical fibers penetrate through the second through hole.
5. A receptacle type MPO connector according to claim 4, wherein the second through-hole is provided as a rectangular hole or a square hole.
6. A receptacle MPO connector according to claim 1, wherein two of said mounting holes extend through said first and second end portions and are disposed on opposite sides of a plurality of said optical fibers.
7. A plug-type MPO connector, comprising:
the body is provided with a first end part and a second end part far away from the first end part, and a plurality of first through holes penetrating through the first end part and the second end part are formed in the body; the body is also provided with two mounting holes;
the optical fibers sequentially penetrate through the first through holes, and one ends of the optical fibers protrude out of the first end part; one end of the optical fiber close to the first end part is covered with an anti-reflection layer;
the two guide pins are respectively arranged in the two mounting holes; and one end of the guide pin protrudes on the first end part.
8. A plug-type MPO connector according to claim 7, wherein the guide pin has a guide head at its top, and the guide head has a cross-section that gradually increases from top to bottom.
9. A connecting structure of a socket type MPO connector and a plug type MPO connector is characterized by comprising:
the receptacle MPO connector of any of claims 1-6;
the plug-type MPO connector of claim 7 or 8;
and an MPO adapter;
the MPO adapter is arranged between the socket type MPO connector and the plug type MPO connector, and two guide pins of the plug type MPO connector are respectively inserted into two mounting holes of the socket type MPO connector;
the optical fibers of the socket type MPO connector correspond to the optical fibers of the plug type MPO connector one to one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023079407.8U CN213843600U (en) | 2020-12-18 | 2020-12-18 | Socket type MPO connector, plug type MPO connector and connection structure of socket type MPO connector and plug type MPO connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023079407.8U CN213843600U (en) | 2020-12-18 | 2020-12-18 | Socket type MPO connector, plug type MPO connector and connection structure of socket type MPO connector and plug type MPO connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213843600U true CN213843600U (en) | 2021-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023079407.8U Active CN213843600U (en) | 2020-12-18 | 2020-12-18 | Socket type MPO connector, plug type MPO connector and connection structure of socket type MPO connector and plug type MPO connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213843600U (en) |
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- 2020-12-18 CN CN202023079407.8U patent/CN213843600U/en active Active
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