CN113189710A - Multicore high-density low-loss connector core insert and connector - Google Patents
Multicore high-density low-loss connector core insert and connector Download PDFInfo
- Publication number
- CN113189710A CN113189710A CN202110406266.6A CN202110406266A CN113189710A CN 113189710 A CN113189710 A CN 113189710A CN 202110406266 A CN202110406266 A CN 202110406266A CN 113189710 A CN113189710 A CN 113189710A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- ferrule
- lock pin
- core
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3834—Means for centering or aligning the light guide within the ferrule
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
- G02B6/3885—Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/40—Mechanical coupling means having fibre bundle mating means
- G02B6/403—Mechanical coupling means having fibre bundle mating means of the ferrule type, connecting a pair of ferrules
Abstract
The invention discloses a multi-core high-density low-loss connector ferrule, which comprises a ferrule head and a ferrule tail, wherein the ferrule head and the ferrule tail are fixedly arranged, the ferrule head is provided with a hollow cavity, the upper end surface of the ferrule head is provided with a glue dispensing hole communicated with the hollow cavity, the ferrule head and the ferrule tail are provided with coaxial and communicated positioning holes, the ferrule head and the ferrule tail are respectively provided with an optical fiber hole and an optical fiber fixing groove communicated with the hollow cavity, the lower edge of the optical fiber hole horizontally extends inwards to form a guide step, the optical fiber hole is used for accommodating a plurality of bare fibers which are arranged in a display way, and the optical fiber hole is accurately matched with the bare fibers inserted into the optical fiber hole. Through the mode, the loss of the optical fiber connector can be reduced, the service life of the optical fiber connector is prolonged, and the number of the pluggable optical fibers can be increased on the premise of not changing the size of the existing inserting core.
Description
Technical Field
The invention relates to the field of multi-core optical fiber connectors, in particular to a multi-core high-density low-loss connector ferrule and a connector.
Background
In an optical communication network, space division multiplexing optical fibers are widely concerned because the space division multiplexing optical fibers can bring about order of magnitude improvement to the transmission capacity of a single optical fiber, break through the traditional shannon limit and realize transmission with higher bandwidth. The Multi-Core Fiber (MFC) is one type of space division multiplexing Fiber, and is an optical Fiber having a plurality of cores in a common cladding region, and each Core serves as an independent communication channel, so that the transmission capacity is expanded from the spatial dimension, and the transmission requirement of future communication upgrade can be met. Particularly in the field of data centers, the multi-core fiber data center communication is a very potential scheme, and has the advantages that under the same space condition, the multi-core fiber can multiply improve the transmission capacity and simplify the comprehensive wiring. For applications of multi-core fibers in data centers, an important challenge is to achieve low-loss optical connections between multi-core fiber jumpers.
In a fiber optic pigtail, the two end faces of the fiber need to be precisely butted, and most importantly, the axes of the two fibers are aligned so that the light energy output from the transmitting fiber can be coupled into the receiving fiber to the maximum extent. As each core of the multi-core optical fiber is placed at a specific position of a common cladding according to a certain rule, the multi-core optical fiber connector not only needs to align the axes, but also needs to rotate the position of the optical fiber, so that each core of the optical fiber needing to be butted can correspond to each other in sequence, and each core of one multi-core optical fiber is connected with low loss.
At present, when connecting a multi-core optical fiber connector, a plurality of optical fibers in an optical cable are generally stripped, then a ceramic pin or a metal pin or a terminal fitting is respectively prepared on each optical fiber, and then the plurality of pins or terminal fittings are respectively installed in a base body of the optical fiber connector, the connector has the following problems during plugging: firstly, a plurality of holes are needed to be processed on a base body for placing contact pins, when the number of cores is larger, the processing difficulty is larger, and the precision of the holes is difficult to ensure; secondly, the outer diameter of the connector is larger due to the adoption of a plurality of separated contact pins; thirdly, when the connector is assembled, a plurality of contact pins are required to be installed in the base body of the connector, the process is difficult to realize, the prepared optical fibers are easy to break, if one optical fiber breaks, the connector cannot be assembled, and the contact pins on all the optical fibers need to be prepared again to ensure that the contact pins are consistent in length and then assembled.
Disclosure of Invention
The invention mainly solves the technical problem of providing a multi-core high-density low-loss connector ferrule and a connector, which can be improved.
In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a multicore high density low-loss connector lock pin, the lock pin includes lock pin head and lock pin afterbody, lock pin head and the fixed setting of lock pin afterbody, the lock pin head is equipped with well cavity, the up end of lock pin head is equipped with the hole of gluing communicating with well cavity, lock pin head and lock pin afterbody are equipped with the coaxial line and the locating hole that is linked together, lock pin head and lock pin afterbody are provided with respectively with the communicating optical fiber hole of well cavity and optic fibre fixed slot, the lower limb level of optical fiber hole inwards extends into the direction step, the optical fiber hole is used for accommodating a plurality of bare fibers of display arrangement, the optical fiber hole with insert inside bare fiber accurate cooperation.
Furthermore, the head of the ferrule is provided with a plurality of optical fiber holes which are arranged in parallel and are uniformly distributed.
Further, the lower edges of the optical fiber holes of the ferrule head extend horizontally inwards to form guide steps, and the length of each guide step is gradually increased from top to bottom.
Further, the outer end face of the guide step is provided with a chamfer.
Further, the positioning hole is provided with a chamfer.
The utility model provides a multicore high density low-loss connector, includes dust cap, lock pin, guide pin base, spring, ends shelves, casing, crimping ring, tail cover and optical cable, lock pin, guide pin base, spring, end shelves are established in the casing, casing front end cover is equipped with the dust cap, the tail cover is connected through the crimping ring to the casing rear end, the connection of afterbody of lock pin end the shelves, end be equipped with on the inner wall of shelves with spring shape assorted recess makes the spring card is established end in the shelves, the lock pin be above-mentioned arbitrary the lock pin.
The invention has the beneficial effects that: the multi-core high-density low-loss connector ferrule and the connector can ensure the precision of the ferrule, reduce the loss of an optical fiber connector and prolong the service life of the optical fiber connector. The invention can increase the number of the pluggable optical fibers on the premise of not changing the size of the current ferrule.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of a ferrule of a multi-core high-density low-loss connector according to the present invention;
FIG. 2 is a schematic diagram of step 1) of a method for manufacturing a multi-core high-density low-loss connector ferrule according to the present invention;
FIG. 3 is a schematic diagram of step 2) of a method of fabricating a multi-core high-density low-loss connector ferrule of the present invention;
FIG. 4 is a schematic diagram of step 3) of a method of fabricating a multi-core high-density low-loss connector ferrule of the present invention;
FIG. 5 is a schematic diagram of step 4) of a method of fabricating a multi-core high-density low-loss connector ferrule of the present invention;
FIG. 6 is a schematic diagram of step 5) of a method of fabricating a multi-core high-density low-loss connector ferrule of the present invention;
FIG. 7 is a schematic structural diagram of a second embodiment of a ferrule of a multi-core high-density low-loss connector according to the present invention;
FIG. 8 is a schematic structural diagram of a third embodiment of a ferrule of a multi-core high-density low-loss connector according to the present invention;
FIG. 9 is a schematic structural diagram of a fourth embodiment of a ferrule of a multi-core high-density low-loss connector according to the present invention;
FIG. 10 is a front view of a fourth embodiment of a multi-core high-density low-loss connector ferrule of the present invention;
FIG. 11 is a cross-sectional view of a fourth embodiment of a multi-core high-density low-loss connector ferrule of the present invention;
fig. 12 is a schematic structural diagram of a multi-core high-density low-loss connector according to the present invention.
1. A ferrule head; 2. the tail part of the inserting core; 3. dispensing holes; 4. positioning holes; 5. an optical fiber hole; 6. an optical fiber fixing groove; 7. a guide step; 8. a dust cap; 9. a guide pin base; 10. a spring; 11. stopping; 12. A front cover; 13. a housing; 14. a crimp ring; 15. a tail sleeve; 16. an optical cable; 17. the belt combining clamp comprises a first fixing block; 18. and the second fixing block is clamped.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the invention can be more readily understood by those skilled in the art, and the scope of the invention will be more clearly defined.
Referring to fig. 1, 7-11, an embodiment of the invention includes: the utility model provides a multicore high density low-loss connector lock pin, the lock pin includes lock pin head 1 and lock pin afterbody 2, lock pin head 1 and the fixed setting of lock pin afterbody 2, lock pin head 1 is equipped with well cavity, the up end of lock pin head 1 is equipped with and goes out the communicating point of glue hole 3 with well cavity, lock pin head 1 and lock pin afterbody 2 are equipped with coaxial line and the locating hole 4 that is linked together, lock pin head 1 and lock pin afterbody 2 are provided with respectively with well cavity communicating optical fiber hole 5 and optical fiber fixed slot 6, the lower limb level of optical fiber hole 5 inwards extends into direction step 7, optical fiber hole 5 is used for acceping a plurality of bare fibers that the display was arranged, optical fiber hole 5 and the accurate cooperation of the bare fiber that inserts inside. The optical fiber holes 5 are waist-shaped holes.
Further, the ferrule head 1 is provided with a plurality of optical fiber holes 5 which are arranged in parallel and distributed uniformly.
Further, the lower edges of the optical fiber holes 5 of the ferrule head 1 extend horizontally inwards to form guide steps 7, and the lengths of the guide steps 7 are gradually increased from top to bottom.
Further, the outer end face of the guide step 7 is provided with a chamfer.
Further, the positioning hole 4 is provided with a chamfer.
Referring to fig. 12, a multi-core high-density low-loss connector includes a dust cap 8, a ferrule, a guide pin base 9, a spring 10, a stop 11, a front sleeve 12, a housing 13, a crimp ring 14, a tail sleeve 15, and a 3mm optical cable 16, where the front sleeve 12 is disposed inside the housing 13 to form a housing, the ferrule, the guide pin base 9, the spring 10, and the stop 11 are disposed in the housing, the front end of the housing is sleeved with the dust cap 8, the rear end of the housing is connected to the tail sleeve 15 through the crimp ring 14, the tail of the ferrule is connected to the stop 11, a groove matching the shape of the spring 10 is disposed on the inner wall of the stop 11, so that the spring 10 is clamped in the stop 11, and the ferrule is the ferrule described in any one of the above.
Referring to fig. 2-5, a method for manufacturing a multi-core high-density low-loss connector ferrule includes:
1) fixing the 24-core bare fiber by using a ribbon clamp, wherein the 24-core fiber is evenly divided into 2 rows and placed up and down, and the bare fiber of the 24-core fiber is arranged in an upper row and a lower row which are sequentially alternated into one row; the ribbon bonding jig includes a C-shaped ribbon bonding jig first fixing block 17 and a ribbon bonding jig second fixing block 18, the row of 24-core bare fibers is pushed into the C-shaped ribbon bonding jig first fixing block 17 and fixed by the ribbon bonding jig second fixing block 18;
2) pushing the optical fiber which is subjected to ribbon merging into an optical fiber fixing groove 6 to enable the front end of an optical fiber hole 5 of the ferrule head 1 to expose the bare optical fiber, and taking down the ribbon merging clamp;
3) pushing the optical fiber horizontally to the optical fiber displaying 1/3 in the glue dispensing hole 3;
4) tail glue is dispensed on the optical fiber at the tail part 2 of the inserting core and is solidified;
5) and (4) dispensing the window adhesive at the dispensing hole 3 and curing.
Further, the tail rubber in the step 4) is cured in a thermosetting mode, the thermosetting temperature is 85 +/-5 ℃, and the curing time is 10-30 minutes.
Further, the window adhesive in the step 5 is cured in a thermosetting mode, the thermosetting temperature is 85 +/-5 ℃, and the curing time is 55-65 minutes.
Further, when the head of the ferrule is provided with a plurality of optical fiber holes 5, the steps 1) -5) are sequentially repeated to insert the bare fibers into the optical fiber holes until all the optical fiber holes are inserted with the bare fibers.
Further, the steps 1) to 5) are completed from bottom to top when the head of the ferrule is provided with a plurality of optical fiber holes 5).
The positioning hole of the multi-core high-density low-loss connector ferrule is manufactured into a long through hole into which 24-core bare fibers can be inserted, the number of the insertable optical fibers is increased, and the loss of the optical fiber connector is reduced due to the arrangement of the bare fibers in the positioning hole.
The connector of the invention can be simultaneously inserted into 24, 48, 72 or 96-core bare fibers, and realizes the function of realizing high-density loss resistance without changing the size of the ferrule.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. The utility model provides a multicore high density low-loss connector lock pin, its characterized in that the lock pin includes lock pin head and lock pin afterbody, lock pin head and the fixed setting of lock pin afterbody, the lock pin head is equipped with well cavity, the up end of lock pin head is equipped with the hole of gluing that communicates with well cavity, lock pin head and lock pin afterbody are equipped with the coaxial line and the locating hole that is linked together, lock pin head and lock pin afterbody are provided with respectively with the communicating optical fiber hole of well cavity and optic fibre fixed slot, the lower limb level of optical fiber hole inwards extends into the direction step, the optical fiber hole is used for acceping a plurality of bare fibers of arranging of display, the optical fiber hole with insert inside bare fiber accurate cooperation.
2. The multi-core, high-density, low-loss connector ferrule of claim 1, wherein: the head of the ferrule is provided with a plurality of optical fiber holes which are arranged in parallel and are uniformly distributed.
3. The multi-core, high-density, low-loss connector ferrule of claim 2, wherein: the lower edges of a plurality of optical fiber holes at the head of the ferrule extend horizontally inwards to form guide steps, and the length of each guide step is gradually increased from top to bottom.
4. The multi-core high-density low-loss connector ferrule of claim 3, wherein: and a chamfer is arranged on the outer end face of the guide step.
5. The multi-core, high-density, low-loss connector ferrule of claim 1, wherein: the positioning hole is provided with a chamfer.
6. A multi-core high-density low-loss connector comprises a dustproof cap, a plug core, a guide pin base, a spring, a stop, a shell, a press connection ring, a tail sleeve and an optical cable, wherein the plug core, the guide pin base, the spring and the stop are arranged in the shell, the dustproof cap is sleeved at the front end of the shell, the rear end of the shell is connected with the tail sleeve through the press connection ring, the tail of the plug core is connected with the stop, a groove matched with the shape of the spring is formed in the inner wall of the stop, so that the spring is clamped in the stop, and the multi-core high-density low-loss connector is characterized in that the plug core is the plug core in any one of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110406266.6A CN113189710A (en) | 2021-04-15 | 2021-04-15 | Multicore high-density low-loss connector core insert and connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110406266.6A CN113189710A (en) | 2021-04-15 | 2021-04-15 | Multicore high-density low-loss connector core insert and connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113189710A true CN113189710A (en) | 2021-07-30 |
Family
ID=76977102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110406266.6A Pending CN113189710A (en) | 2021-04-15 | 2021-04-15 | Multicore high-density low-loss connector core insert and connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113189710A (en) |
-
2021
- 2021-04-15 CN CN202110406266.6A patent/CN113189710A/en active Pending
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