CN113253390B - Compatible multi-core optical fiber coupling device and coupling method thereof - Google Patents
Compatible multi-core optical fiber coupling device and coupling method thereof Download PDFInfo
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- CN113253390B CN113253390B CN202110796731.1A CN202110796731A CN113253390B CN 113253390 B CN113253390 B CN 113253390B CN 202110796731 A CN202110796731 A CN 202110796731A CN 113253390 B CN113253390 B CN 113253390B
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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
- G02B6/26—Optical coupling means
- G02B6/262—Optical details of coupling light into, or out of, or between fibre ends, e.g. special fibre end shapes or associated optical elements
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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
- G02B6/3604—Rotary joints allowing relative rotational movement between opposing fibre or fibre bundle ends
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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
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Abstract
The invention provides a compatible multi-core fiber coupling device, which comprises a multi-core fiber and a fiber bundle, wherein a coupling connecting column is arranged between the multi-core fiber and the fiber bundle, the coupling connecting column comprises a plurality of distribution areas, each distribution area is used for matching different multi-core fibers, each distribution area comprises a plurality of through holes, the through holes in each distribution area are distributed differently, the end parts of the multi-core fibers abut against the coupling connecting column, a plurality of multi-core fiber cores are arranged in the multi-core fiber, a single-mode fiber is arranged in the fiber bundle, the single-mode fiber penetrates through the through holes to be in contact with the end parts of the multi-core fiber cores, and the problem that the same coupling device is difficult to be used for connecting various multi-core fibers and single-mode fibers is solved.
Description
Technical Field
The invention relates to the field of optical fiber communication, in particular to a compatible multi-core optical fiber coupling device and a coupling method thereof.
Background
A multicore fiber can be simply defined as having multiple cores in a common cladding region, and since the single mode fiber channel capacity is increased to 100Tbit/s, which is close to the limit, the multicore fiber offers the possibility of increasing the fiber communication capacity. However, in the currently used communication devices, a single-mode fiber outputs a signal, and if multi-core fiber communication needs to be sufficiently fused to a communication system, low-loss connection between a multi-core fiber and the single-mode fiber is required, so that a multi-core fiber coupling technology is particularly important, and is a key factor for popularizing practical application of the multi-core fiber and reducing cost.
According to the disclosure in CN 112505838B, a multi-core coupling device and a coupling method based on multi-hole capillaries are disclosed, in which a multi-core optical fiber and a single-core single-mode optical fiber are connected by an auxiliary assembly with a plurality of capillaries, which is simple and effective, and one auxiliary assembly is corresponding to each multi-core optical fiber, but because of a large number of multi-core optical fiber types, a large number of auxiliary assemblies need to be manufactured to correspond to each other, and it is difficult to realize standardized mass production of multi-core optical fibers in a customized or research type.
Disclosure of Invention
The invention provides a compatible multi-core optical fiber coupling device and a coupling method thereof, which solve the problem that the same coupling device is difficult to be used for connecting multiple multi-core optical fibers and single-mode optical fibers.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a compatible type multicore fiber coupling device, includes multicore optic fibre and fiber bundle, be equipped with the coupling spliced pole between multicore optic fibre and the fiber bundle, the coupling spliced pole includes a plurality of distribution districts, each distribution district is used for pairing different multicore optic fibre, the distribution district includes a plurality of through holes, the through hole in each distribution district distributes differently, the multicore optic fibre tip supports to lean on the coupling spliced pole, be equipped with a plurality of multicore optic fibre cores in the multicore optic fibre, be equipped with single mode fiber in the fiber bundle, single mode fiber passes through the through hole and contacts with multicore optic fibre core tip.
In a preferred scheme, one end of the through hole, which is close to the multi-core optical fiber, is provided with a positioning section, and the diameter of the positioning section is smaller than that of the through hole.
In the preferred scheme, the lateral wall of the positioning section is provided with a plurality of drainage grooves, the outer side of one end of the multicore optical fiber core, which is in contact with the single-mode optical fiber, is provided with a sinking groove, and the positioning section is communicated with the sinking groove through the drainage grooves.
In an optimized scheme, a first sinking platform and a second sinking platform are respectively arranged at two ends of the through hole, a plug is further arranged, the plug plugs the through hole into which the single-mode optical fiber is not inserted, second reinforcing glue is arranged in the through hole and the sinking groove and used for fixing a multi-core optical fiber core and the single-mode optical fiber, first reinforcing glue is arranged in the second sinking platform and used for fixing the multi-core optical fiber.
In the preferred scheme, the fiber optic cable turning device further comprises a support frame, a rotatable turning frame is arranged on the support frame, a first connecting device and a second connecting device are arranged at two ends of the turning frame respectively, the multi-core fiber is arranged in the first connecting device, the coupling connecting column is arranged in the second connecting device, a rotary table mechanism is further arranged, the first connecting device is rotatably connected with the turning frame through the rotary table mechanism, the multi-core fiber rotates around the axis of the coupling connecting column to be matched with the distribution area, and the second connecting device is slidably connected with the turning frame through a sliding mechanism to enable the end face of the multi-core fiber to abut against the coupling connecting column.
In a preferred scheme, the first connecting device comprises a first connecting ring, a first holding flap and a second holding flap are arranged on the first connecting ring, the first holding flap and the second holding flap are folded to clamp the multi-core optical fiber, a first rotating flap and a second rotating flap are arranged between the first holding flap and the second holding flap, a driving wheel is further arranged, the driving wheel drives the first rotating flap and the second rotating flap to rotate along the inner walls of the first holding flap and the second holding flap, the multi-core optical fiber is arranged between the first rotating flap and the second rotating flap, a multi-core optical fiber marking area is arranged at the center of the multi-core optical fiber, a connecting column marking area is arranged at the center of the distribution area, and the multi-core optical fiber rotates to enable the multi-core optical fiber marking area to be aligned with the connecting column marking area;
the second connecting device comprises a second connecting ring, a third clamping flap and a fourth clamping flap are arranged on the second connecting ring, the third clamping flap and the fourth clamping flap are folded to clamp the coupling connecting column, the sliding mechanism comprises a third gear and a third rack, the third rack is arranged on the outer wall of the second connecting ring, and the third gear drives the third rack to slide up and down;
the side wall of the first connecting ring is provided with a first gap;
the side wall of the second connecting ring is provided with a second gap.
In a preferred scheme, a first slide bar is arranged on one side of each of the first clasping valve and the second clasping valve, the first slide bar is connected with the first connecting ring in a sliding manner, the end parts of the two first slide bars are respectively connected with a first supporting arm and a second supporting arm, the first supporting arm and the second supporting arm are provided with first racks which are arranged oppositely, and a first gear is also arranged and drives the first clasping valve and the second clasping valve to fold;
one side of the third enclasping valve and one side of the fourth enclasping valve are provided with a second slide bar which is connected with the second connecting ring in a sliding manner, the end parts of the two second slide bars are respectively connected with a third supporting arm and a fourth supporting arm, the third supporting arm and the fourth supporting arm are provided with second racks which are arranged oppositely, and the third supporting arm and the fourth supporting arm are also provided with a second gear which drives the third enclasping valve and the fourth enclasping valve to be closed.
Also included are multi-core coupling methods,
s1, manufacturing a coupling connecting column;
s2, flattening the end face of the multi-core optical fiber to be connected, placing the multi-core optical fiber between a first rotating petal and a second rotating petal, folding a first holding petal and a second holding petal to clamp the multi-core optical fiber, placing a coupling connecting column between a third holding petal and a fourth holding petal, and folding the third holding petal and the fourth holding petal to clamp the coupling connecting column;
s3, connecting and fixing the multi-core optical fiber and the optical fiber bundle by using the coupling connection column;
s4, separating the first clasping valve from the second clasping valve, separating the third clasping valve from the fourth clasping valve, and taking down the coupling connection column, the multi-core optical fiber and the connector of the optical fiber bundle.
In a preferred embodiment, S1 includes the specific steps,
s11, selecting a plurality of multi-core fibers, and obtaining distribution maps of fiber cores and marking areas of the multi-core fibers;
s12, superposing the distribution diagrams of the fiber cores and the mark areas of the multi-core optical fiber into a graph;
and S13, manufacturing a coupling connecting column according to the mark area and the fiber core distribution of the superposed graph.
In a preferred embodiment, S3 includes the specific steps,
s31, adjusting the roll-over stand, turning the coupling connection column to the upper side, enabling the multi-core fiber to be below the coupling connection column, rotating the rotary table mechanism, and turning the multi-core fiber to be right below a distribution area, corresponding to the distribution of the multi-core fiber, on the coupling connection column;
s32, the second connecting ring drives the coupling connecting column to descend to be close to the end face of the multi-core optical fiber, the driving wheel drives the multi-core optical fiber to rotate by utilizing the first rotating lobe and the second rotating lobe, meanwhile, the light transmitter and the light receiver are utilized to monitor the luminous flux passing through the connecting column marking area and the multi-core optical fiber marking area, and the driving wheel stops when the luminous flux reaches the peak value;
s33, the second connecting ring drives the coupling connecting column to descend to the end face of the multi-core optical fiber to abut against the coupling connecting column, and each single-mode optical fiber of the optical fiber bundle is inserted into each through hole until the end face of the through hole abuts against the end face of the fiber core of the multi-core optical fiber;
s34, plugging unused through holes by using plugs, adding reinforcing glue into the first sinking platform, filling the through holes into which the single-mode fibers are inserted with the reinforcing glue, and allowing the reinforcing glue to enter the sinking grooves through drainage grooves in the side walls of the positioning sections and fill the end parts of fiber cores of the multi-core fibers;
and S35, after the second reinforcing glue is solidified, turning over the roll-over stand, turning the multi-core optical fiber to the position right above the coupling connection column, adding the reinforcing glue into the second sinking platform, and waiting for the first reinforcing glue to be solidified.
The invention has the beneficial effects that: the coupling connection column is provided with a plurality of distribution areas, each distribution area corresponds to one multi-core optical fiber, so that various commonly used multi-core optical fibers can be connected with single-mode optical fibers through one coupling connection column, the types of the coupling connection column are greatly reduced, the types of clamps and manufacturing devices matched with the coupling connection column are indirectly reduced, the standardization degree is improved, and the multiple cost is reduced; the through hole of the coupling connecting column is large in diameter, so that the friction resistance when the single-mode optical fiber is inserted is reduced, the diameter of the positioning section is smaller than that of the through hole and slightly larger than that of the single-mode optical fiber, and the alignment of the fiber core is improved; the positioning section is provided with a drainage groove, so that the reinforcing glue can flow into the sinking groove conveniently.
Drawings
The invention is further illustrated by the following figures and examples.
FIG. 1 is a schematic of the present invention.
Fig. 2 is a side view of a second connection device of the present invention.
Fig. 3 is a top view of a second connection device of the present invention.
Fig. 4 is a top view of the first connecting device of the present invention.
Fig. 5 is a side view of the first connecting device of the present invention.
Fig. 6 is a schematic view of the coupling post of the present invention.
Fig. 7 is a schematic view of an embodiment of the coupling post of the present invention.
Fig. 8 is an enlarged view of a portion of the mechanism of the coupling post of the present invention.
Fig. 9 is a schematic view of a multi-core optical fiber of the present invention.
Fig. 10 is a schematic diagram of step S11 of the coupling method of the present invention.
Fig. 11 is a schematic diagram of step S12 of the coupling method of the present invention.
Fig. 12 is a schematic diagram of step S13 of the coupling method of the present invention.
Fig. 13 is a schematic diagram of step S31 of the coupling method of the present invention.
Fig. 14 is a schematic diagram of step S32 of the coupling method of the present invention.
Fig. 15 is a schematic diagram of step S33 of the coupling method of the present invention.
Fig. 16 is a schematic diagram of step S34 of the coupling method of the present invention.
Fig. 17 is a schematic diagram of step S35 of the coupling method of the present invention.
In the figure: a first connecting device 1; a first connecting ring 101; a first guide table 102; a first slide bar 103; a first arm 104; a second support arm 105; a first rack 106; a first gear 107; a first notch 108; a first clasping flap 109; a second clasping flap 110; a first rotating lobe 111; a second rotating lobe 112; a drive wheel 113; a first motor 114; split half collar 115; a second connecting means 2; a second connection ring 201; a second guide table 202; a second slide bar 203; a third arm 204; a fourth support arm 205; a second rack 206; a second gear 207; a second notch 208; a third clasping flap 209; a fourth clasping flap 210; a second motor 211; a turntable mechanism 3; a slide mechanism 4; a third gear 401; a third rack 402; a third motor 403; a connecting frame 404; a support frame 5; a roll-over stand 6; a coupling connection post 7; a through hole 701; a connection post marking region 702; a first sink deck 703; a positioning segment 704; a second sink table 705; drainage grooves 706; a first reinforcement glue 707; a second reinforcement glue 708; a plug 709; a distribution area 710; a multi-core optical fiber 8; a multicore fiber core 801; a sink tank 802; a multi-core fiber marker region 803; a fiber bundle 9; a single mode optical fiber 901; a light emitter 10; and a light receiver 11.
Detailed Description
As shown in fig. 1 to 11, a compatible multicore fiber coupling device includes a multicore fiber 8 and a fiber bundle 9, a coupling connection column 7 is disposed between the multicore fiber 8 and the fiber bundle 9, the coupling connection column 7 includes a plurality of distribution areas 710 rotationally distributed along an axis, each distribution area 710 is used for matching different multicore fibers 8, the distribution areas 710 include a plurality of through holes 701, the through holes 701 in each distribution area 710 are distributed differently, the number, diameter, and distribution distance between the through holes 701 are the same as those of the matched multicore fibers 8, the end of the multicore fiber 8 abuts against the coupling connection column 7, the multicore fiber 8 has a plurality of multicore fiber cores 801, the fiber bundle 9 has a single mode fiber 901 (whose core is centered), the single mode fiber 901 has one or more, the single mode fiber 901 passes through the through holes 701 to contact with the end of the multicore fiber core 801, the position of each distribution area 710 on the coupling connection column 7 is known, during pairing, the multi-core optical fiber 8 rotates around the axis of the coupling connection column 7 at the lower part by a set angle to the position of the alignment distribution area 710, then the coupling connection column 7 is moved to enable the multi-core optical fiber 8 to abut against the end face of the multi-core optical fiber 8, then the multi-core optical fiber 8 rotates automatically until the fiber cores are aligned with the axes of the through holes 701, finally the single-mode optical fiber 901 is inserted, and the end faces of the fiber cores 901 and the end faces of the multi-core optical fiber 801 are aligned.
In a preferred scheme, a positioning section 704 is arranged at one end of the through hole 701 close to the multi-core fiber 8, the diameter of the positioning section 704 is slightly smaller than that of the through hole 701, the diameter of the positioning section 704 is slightly larger than that of the single-mode fiber 901, the length of the positioning section 704 only occupies a small part of the length of the through hole 701, when the single-mode fiber 901 penetrates into the through hole 701, the single-mode fiber 901 does not generate friction resistance because the diameter of the through hole 701 is larger, when the single-mode fiber 901 penetrates into the positioning section 704, because the length of the positioning section 704 is shorter, the friction resistance is not large, and meanwhile, under the limit constraint of the positioning section 704, the single-mode fiber 901 tends to be coaxial with the fiber core 801 of the multi-core fiber, so that the fiber cores of the single-mode fiber and the multi-core are aligned.
In a preferred scheme, a plurality of drainage grooves 706 are formed in the side wall of the positioning section 704, a sinking groove 802 is formed in the outer side of one end, in contact with the single-mode fiber 901, of the multi-core fiber core 801, and the positioning section 704 is communicated with the sinking groove 802 through the drainage grooves 706.
In a preferred scheme, a first sinking platform 703 and a second sinking platform 705 are respectively arranged at two ends of a through hole 701, a plug 709 is further arranged, the plug 709 plugs the through hole 701 into which the single mode fiber 901 is not inserted, leakage is prevented during subsequent glue adding and fixing, second reinforcing glue 708 is arranged in the through hole 701 and the sinking groove 802, the second reinforcing glue 708 is used for fixing the multi-core fiber core 801 and the single mode fiber 901, a first reinforcing glue 707 is arranged in the second sinking platform 705, the first reinforcing glue 707 is used for fixing the multi-core fiber 8, the first reinforcing glue 707 and the second reinforcing glue 708 can adopt ultraviolet glue, ultraviolet irradiation can be performed in a very short time, the intensity is good, glue does not need to be added into the through hole 701 one by one due to the arrangement of the first sinking platform 703, only a proper amount of ultraviolet glue needs to be added into the first sinking platform 703 once, the through hole 701 with the single-mode optical fiber 901 is gradually filled with the ultraviolet glue under the action of gravity and capillary, and the positioning section 704 and the sinking groove 802 are continuously filled downwards.
The drainage grooves 706 communicate the positioning section 704 of the through hole 701 with the sunken grooves 802 around the end of the multicore fiber core 801, so that the reinforcing glue can flow from the upper coupling connection column 7 to the lower multicore fiber 8 to connect and fix the single-mode fiber 901 and the multicore fiber core 801 into a whole, and moreover, the drainage grooves 706 reduce the contact area between the side wall of the positioning section 704 and the outer wall of the single-mode fiber 901, and further reduce friction resistance.
In the preferred scheme, the fiber optic cable distribution device further comprises a support frame 5, a rotatable overturning frame 6 is arranged on the support frame 5, a first connecting device 1 and a second connecting device 2 are arranged at two ends of the overturning frame 6 respectively, the multi-core fiber 8 is arranged in the first connecting device 1, the coupling connecting column 7 is arranged in the second connecting device 2, a turntable mechanism 3 is further arranged, the first connecting device 1 is rotatably connected with the overturning frame 6 through the turntable mechanism 3, the angle of a distribution area 710 matched with the multi-core fiber 8 is known, the multi-core fiber 8 rotates to the position under the distribution area 710 around the axis of the coupling connecting column 7 to be matched with the distribution area 710, and after the matching is completed, the second connecting device 2 is slidably connected with the overturning frame 6 through a sliding mechanism 4 so that the end face of the multi-core fiber 8 abuts against the coupling connecting column 7.
In a preferred scheme, the first connecting device 1 comprises a first connecting ring 101, a first holding flap 109 and a second holding flap 110 are arranged on the first connecting ring 101, the first holding flap 109 and the second holding flap 110 are folded to clamp the multicore fiber 8, a first rotating flap 111 and a second rotating flap 112 are arranged between the first holding flap 109 and the second holding flap 110, a driving wheel 113 is further arranged, the driving wheel 113 can be a friction wheel, the driving wheel 113 abuts against the first rotating flap 111 and the second rotating flap 112 to roll, one end of the driving wheel 113 is provided with a first motor 114, the driving wheel 113 drives the first rotating flap 111 and the second rotating flap 112 to rotate along the inner walls of the first holding flap 109 and the second holding flap 110, the end portions of the first holding flap 109 and the second holding flap 110 are further provided with an open half-collar 115 composed of two half-rings, the open half-collar 115 is of a ceramic structure, the end surface is smooth, and is convenient for the first rotating flap 111 and the second rotating flap 112 to rotate, the multi-core optical fiber 8 is arranged between the first rotating lobe 111 and the second rotating lobe 112, the multi-core optical fiber 8 is provided with a multi-core optical fiber marking area 803 at the center, the distribution area 710 is provided with a connecting column marking area 702 at the center, the cross sections of the two marking areas are the same in shape and are isosceles triangle or arrow-shaped geometric shapes with directivity for marking the circumferential direction of the optical fiber, and the multi-core optical fiber 8 rotates to align the multi-core optical fiber marking area 803 with the connecting column marking area 702;
the second connecting device 2 comprises a second connecting ring 201, a third clasping petal 209 and a fourth clasping petal 210 are arranged on the second connecting ring 201, the third clasping petal 209 and the fourth clasping petal 210 are folded to clamp the coupling connecting column 7, the sliding mechanism 4 comprises a third gear 401 and a third rack 402, a third motor 403 is arranged on one side of the third gear 401, the third rack 402 is arranged on the outer wall of the second connecting ring 201, the third gear 401 drives the third rack 402 to slide up and down, a connecting frame 404 is further arranged, one end of the connecting frame 404 is connected with the overturning frame 6, and the other end of the connecting frame 404 is connected with the second connecting ring 201 in a sliding manner;
the side wall of the first connecting ring 101 is provided with a first gap 108;
the side wall of the secondary connecting ring 201 is provided with a second notch 208.
The opening of the first notch 108 is larger than the diameter of the multi-core fiber 8, the opening of the second notch 208 is larger than the diameter of the coupling connection column 7, the multi-core fiber 8 and the coupling connection column 7 can be conveniently placed in and taken out, and the clamp devices of the multi-core fiber 8 and the coupling connection column 7 are designed in a semicircular and semicircular assembling mode, so that the connector can be conveniently taken out after the fibers are connected.
Since it cannot be directly determined whether the core 801 of the multi-core optical fiber is aligned with the through hole 701, when the coupling column 7 is fabricated, the mark region 702 is fabricated at the central position of each distribution region 710, the region is made of a glass material similar to the core but slightly different in composition, and has anisotropy in the circumferential direction, so that the circumferential angle of the optical fiber can be identified, and after the end faces of the multi-core optical fiber 8 and the coupling column 7 are aligned, the light transmission amount can be detected by the light emitter 10 and the light receiver 11, and the circumferential alignment degree can be determined.
In a preferable scheme, a first slide bar 103 is arranged on one side of a first clasping valve 109 and one side of a second clasping valve 110, the first slide bar 103 is connected with a first connecting ring 101 in a sliding manner, first guide platforms 102 are arranged on two sides of the first connecting ring 101, the sliding connection position can be thickened, the connection strength is improved, the end parts of the two first slide bars 103 are respectively connected with a first support arm 104 and a second support arm 105, first racks 106 which are arranged oppositely are arranged on the first support arm 104 and the second support arm 105, and a first gear 107 is further arranged, and the first gear 107 drives the first clasping valve 109 and the second clasping valve 110 to be closed;
one side of the third clasping valve 209 and one side of the fourth clasping valve 210 are provided with a second sliding rod 203, the second sliding rod 203 is in sliding connection with a second connecting ring 201, two sides of the second connecting ring 201 are provided with second guide platforms 202, a connecting frame 404 is clamped on the second guide platforms 202 to slide, the sliding connection part of the second guide platforms 202 can be thickened, the connection strength is improved, the end parts of the two second sliding rods 203 are respectively connected with a third supporting arm 204 and a fourth supporting arm 205, the third supporting arm 204 and the fourth supporting arm 205 are provided with second racks 206 which are oppositely arranged, a second gear 207 is further arranged, one side of the second gear 207 is provided with a second motor 211, and the second gear 207 drives the third clasping valve 209 and the fourth clasping valve 210 to be closed.
As in fig. 10-17, the coupling method is as follows,
s1, manufacturing a coupling connecting column 7;
s2, cutting the end surface of the multicore fiber 8 to be connected, processing a sinking groove 802 by femtosecond laser or other methods, placing the multicore fiber 8 between the first rotating petal 111 and the second rotating petal 112, folding the first clasping petal 109 and the second clasping petal 110 to clamp the multicore fiber 8, placing the coupling connection post 7 between the third clasping petal 209 and the fourth clasping petal 210, and folding the third clasping petal 209 and the fourth clasping petal 210 to clamp the coupling connection post 7;
s3, connecting and fixing the multi-core fiber 8 and the fiber bundle 9 by using the coupling connection column 7;
s4, separating the first clasping valve 109 from the second clasping valve 110, separating the third clasping valve 209 from the fourth clasping valve 210, and taking down the connecting body of the coupling connecting column 7, the multi-core optical fiber 8 and the optical fiber bundle 9.
In a preferred embodiment, S1 includes the specific steps,
s11, selecting a plurality of multi-core fibers 8, and obtaining distribution maps of fiber cores and marking areas of the multi-core fibers 8;
s12, superimposing the distribution patterns of the cores and the mark regions of the multicore fiber 8 into a pattern, arranging each distribution region 710 in a rotation around a center, and recording the angle of each distribution region 710;
and S13, manufacturing the coupling connecting column 7 by using a femtosecond laser or other methods according to the mark area and the fiber core distribution of the superposed graph.
In a preferred embodiment, S3 includes the specific steps,
s31, adjusting the turning frame 6, turning the coupling connection column 7 to the upper side, turning the rotary table mechanism 3 with the multi-core fiber 8 below the coupling connection column 7, turning the multi-core fiber 8 to the right below a distribution area 710 corresponding to the distribution of the multi-core fiber 8 on the coupling connection column 7, with the first sinking platform 703 on and the second sinking platform 705 on;
s32, the second connection ring 201 drives the coupling connection column 7 to descend to a position close to the end surface of the multicore fiber 8, the driving wheel 113 drives the multicore fiber 8 to rotate by using the first rotation lobe 111 and the second rotation lobe 112, the light emitter 10 and the light receiver 11 are used to monitor the light flux passing through the connection column mark region 702 and the multicore fiber mark region 803, and the driving wheel 113 stops when the light flux reaches the peak value, which indicates that the axes of the multicore fiber cores 801 and the single mode fibers 901 are aligned at this time;
s33, the second connection ring 201 drives the coupling connection post 7 to descend until the end face of the multicore fiber 8 abuts against the coupling connection post 7, and each single-mode fiber 901 of the fiber bundle 9 is inserted into each through hole 701 until the end face of the through hole 701 abuts against the end face of the multicore fiber core 801;
s34, plugging unused through holes 701 by using plugs 709, adding reinforcing glue into the first sinking platform 703, filling the through holes 701 into which the single-mode fibers 901 are inserted with the reinforcing glue, and allowing the reinforcing glue to enter the sinking grooves 802 through the drainage grooves 706 on the side walls of the positioning sections 704 and fill the end parts of the cores 801 of the multi-core fibers;
s35, after the second reinforcing glue 708 is solidified, the turning frame 6 is turned over, the multi-core fiber 8 is turned over to a position right above the coupling connection post 7, the first sinking stage 703 is located below, the second sinking stage 705 is located above, the reinforcing glue is added to the second sinking stage 705, and the solidification of the first reinforcing glue 707 is waited.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (10)
1. A compatible multi-core optical fiber coupling device is characterized in that: including multicore optic fibre (8) and optical fiber bundle (9), be equipped with coupling joint post (7) between multicore optic fibre (8) and optical fiber bundle (9), coupling joint post (7) are including a plurality of distribution district (710), each distribution district (710) is used for mating different multicore optic fibre (8), distribution district (710) includes a plurality of through holes (701), through hole (701) in each distribution district (710) distribute differently, multicore optic fibre (8) tip supports and leans on coupling joint post (7), be equipped with a plurality of multicore optic fibre cores (801) in multicore optic fibre (8), be equipped with single mode fiber (901) in optical fiber bundle (9), single mode fiber (901) pass through hole (701) and fiber core (801) tip contact.
2. The compatible multi-core fiber coupling device of claim 1, wherein: one end of the through hole (701) close to the multi-core optical fiber (8) is provided with a positioning section (704), and the diameter of the positioning section (704) is smaller than that of the through hole (701).
3. The compatible multi-core fiber coupling device of claim 2, wherein: the side wall of the positioning section (704) is provided with a plurality of drainage grooves (706), the outer side of one end, in contact with the single-mode fiber (901), of the multi-core fiber core (801) is provided with a sinking groove (802), and the positioning section (704) is communicated with the sinking groove (802) through the drainage grooves (706).
4. The compatible multi-core fiber coupling device of claim 3, wherein: through hole (701) both ends are equipped with first heavy platform (703) and the heavy platform of second (705) respectively, still are equipped with end cap (709), through hole (701) of single mode fiber (901) are not inserted in end cap (709) shutoff, be equipped with second in through hole (701) and heavy groove (802) and consolidate gluey (708), second is consolidated gluey (708) and is used for fixed multicore optic fibre core (801) and single mode fiber (901), be equipped with first reinforcement gluey (707) in the heavy platform of second (705), first reinforcement gluey (707) are used for fixing multicore optic fibre (8).
5. The compatible multi-core fiber coupling device of claim 1, wherein: still include support frame (5), be equipped with rotatable roll-over stand (6) on support frame (5), roll-over stand (6) both ends are equipped with first connecting device (1) and second connecting device (2) respectively, establish in first connecting device (1) multicore optic fibre (8), establish in second connecting device (2) coupling spliced pole (7), still be equipped with revolving stage mechanism (3), first connecting device (1) is rotated with roll-over stand (6) through revolving stage mechanism (3) and is connected, multicore optic fibre (8) are rotated in order to mate with distribution area (710) around the axle center of coupling spliced pole (7), second connecting device (2) are through slide mechanism (4) and roll-over stand (6) sliding connection so that the terminal surface of multicore optic fibre (8) supports and lean on coupling spliced pole (7).
6. The compatible multi-core fiber coupling device of claim 5, wherein: the first connecting device (1) comprises a first connecting ring (101), a first holding flap (109) and a second holding flap (110) are arranged on the first connecting ring (101), the first holding flap (109) and the second holding flap (110) are folded to clamp the multi-core optical fiber (8), a first rotating flap (111) and a second rotating flap (112) are arranged between the first holding flap (109) and the second holding flap (110), a driving wheel (113) is further arranged, the driving wheel (113) drives the first rotating flap (111) and the second rotating flap (112) to rotate along the inner walls of the first holding flap (109) and the second holding flap (110), the multi-core optical fiber (8) is arranged between the first rotating flap (111) and the second rotating flap (112), a multi-core optical fiber marking region (803) is arranged in the center of the multi-core optical fiber (8), a connecting column marking region (702) is arranged in the center of the multi-core optical fiber (8), and the optical fiber (8) rotates to enable the optical fiber marking region (803) to be aligned with the multi-core marking region (702);
the second connecting device (2) comprises a second connecting ring (201), a third clasping valve (209) and a fourth clasping valve (210) are arranged on the second connecting ring (201), the third clasping valve (209) and the fourth clasping valve (210) are folded to clamp the coupling connecting column (7), the sliding mechanism (4) comprises a third gear (401) and a third rack (402), the third rack (402) is arranged on the outer wall of the second connecting ring (201), and the third gear (401) drives the third rack (402) to slide up and down;
a first gap (108) is formed in the side wall of the first connecting ring (101);
the side wall of the second connecting ring (201) is provided with a second notch (208).
7. The compatible multi-core fiber coupling device of claim 6, wherein: one side of each of the first clasping valve (109) and the second clasping valve (110) is provided with a first sliding rod (103), the first sliding rod (103) is in sliding connection with the first connecting ring (101), the end parts of the two first sliding rods (103) are respectively connected with a first support arm (104) and a second support arm (105), the first support arm (104) and the second support arm (105) are provided with first racks (106) which are oppositely arranged, and are also provided with first gears (107), and the first gears (107) drive the first clasping valve (109) and the second clasping valve (110) to be closed;
one side of the third clasping valve (209) and one side of the fourth clasping valve (210) are provided with a second sliding rod (203), the second sliding rod (203) is in sliding connection with a second connecting ring (201), the end parts of the two second sliding rods (203) are respectively connected with a third support arm (204) and a fourth support arm (205), the third support arm (204) and the fourth support arm (205) are provided with second racks (206) which are oppositely arranged, and are also provided with second gears (207), and the second gears (207) drive the third clasping valve (209) and the fourth clasping valve (210) to be closed.
8. A coupling method of a compatible multi-core optical fiber coupling device according to any one of claims 1 to 7, comprising:
s1, manufacturing a coupling connecting column (7);
s2, the end face of the multi-core optical fiber (8) to be connected is cut flat, the multi-core optical fiber (8) is placed between a first rotating petal (111) and a second rotating petal (112), a first clasping petal (109) and a second clasping petal (110) are folded to clamp the multi-core optical fiber (8), a coupling connecting column (7) is placed between a third clasping petal (209) and a fourth clasping petal (210), and the third clasping petal (209) and the fourth clasping petal (210) are folded to clamp the coupling connecting column (7);
s3, connecting and fixing the multi-core fiber (8) and the fiber bundle (9) by using the coupling connection column (7);
s4, separating the first clasping valve (109) from the second clasping valve (110), separating the third clasping valve (209) from the fourth clasping valve (210), and taking down the connecting body of the coupling connecting column (7), the multi-core optical fiber (8) and the optical fiber bundle (9).
9. The method of claim 8, wherein: s1 includes the specific steps of,
s11, selecting a plurality of multi-core fibers (8) to obtain distribution maps of fiber cores and marking areas of the multi-core fibers (8);
s12, superposing the distribution diagrams of the fiber cores and the mark areas of the multi-core fiber (8) into a graph;
and S13, manufacturing the coupling connecting column (7) according to the mark area and the fiber core distribution of the superposed graph.
10. The method of claim 8, wherein: s3 includes the specific steps of,
s31, adjusting the turning frame (6), turning the coupling connection column (7) to the upper side, turning the rotary table mechanism (3) with the multi-core fiber (8) below the coupling connection column (7), and turning the multi-core fiber (8) to a position right below a distribution area (710) corresponding to the distribution of the multi-core fiber (8) on the coupling connection column (7);
s32, the second connecting ring (201) drives the coupling connecting column (7) to descend to be close to the end face of the multi-core optical fiber (8), the driving wheel (113) drives the multi-core optical fiber (8) to rotate by utilizing the first rotating lobe (111) and the second rotating lobe (112), meanwhile, the light transmitter (10) and the light receiver (11) are utilized to monitor the luminous flux passing through the connecting column marking area (702) and the multi-core optical fiber marking area (803), and the driving wheel (113) stops when the luminous flux reaches the peak value;
s33, the second connecting ring (201) drives the coupling connection column (7) to descend to the end face of the multi-core optical fiber (8) to abut against the coupling connection column (7), and the single-mode optical fibers (901) of the optical fiber bundle (9) are inserted into the through holes (701) until the end faces of the through holes (701) abut against the end face of the multi-core optical fiber core (801);
s34, plugging unused through holes (701) by using plugs (709), adding reinforcing glue into the first sinking platform (703), filling the reinforcing glue into the through holes (701) inserted with the single-mode fibers (901), and enabling the reinforcing glue to enter the sinking grooves (802) through the drainage grooves (706) in the side walls of the positioning sections (704) and fill the end parts of the cores (801) of the multi-core fibers;
s35, after the second reinforcing glue (708) is solidified, turning over the turning frame (6), turning the multi-core optical fiber (8) to be right above the coupling connection column (7), adding the reinforcing glue into the second sinking platform (705), and waiting for the first reinforcing glue (707) to solidify.
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| JP2013522680A (en) * | 2010-03-16 | 2013-06-13 | オーエフエス ファイテル，エルエルシー | Multi-core fiber connector for multi-core optical fiber cable |
| JP2013054116A (en) * | 2011-09-01 | 2013-03-21 | Konica Minolta Advanced Layers Inc | Method for coupling multi-core fiber |
| JP6138481B2 (en) * | 2012-12-25 | 2017-05-31 | 株式会社フジクラ | Multi-core fiber |
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| WO2016137344A1 (en) * | 2015-02-28 | 2016-09-01 | Inphotech Sp. Z O. O. | Optical fiber coupler |
| US9755382B2 (en) * | 2015-03-13 | 2017-09-05 | Senko Advanced Components, Inc. | Connector system with interchangeable connector modules for optical fibers, electrical conductors, or both |
| JP6550424B2 (en) * | 2017-06-29 | 2019-07-24 | 株式会社フジクラ | Optical device manufacturing method |
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