CN109669235A - A kind of multicore upconversion fiber and production method - Google Patents
A kind of multicore upconversion fiber and production method Download PDFInfo
- Publication number
- CN109669235A CN109669235A CN201910026327.9A CN201910026327A CN109669235A CN 109669235 A CN109669235 A CN 109669235A CN 201910026327 A CN201910026327 A CN 201910026327A CN 109669235 A CN109669235 A CN 109669235A
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- covering
- multicore
- fiber
- fibre core
- upconversion
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- 239000000835 fiber Substances 0.000 title claims abstract description 138
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 239000013307 optical fiber Substances 0.000 claims abstract description 46
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 239000011241 protective layer Substances 0.000 claims description 12
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000010410 layer Substances 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract description 6
- 230000011218 segmentation Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 230000005374 Kerr effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- G02B6/04—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
-
- 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
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2552—Splicing of light guides, e.g. by fusion or bonding reshaping or reforming of light guides for coupling using thermal heating, e.g. tapering, forming of a lens on light guide ends
-
- 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
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/441—Optical cables built up from sub-bundles
Abstract
The invention discloses a kind of multicore upconversion fiber and production methods, realize that multi-core optical fiber connects end to end, improve optical cable density, including fibre core, the first covering and more second coverings, the both ends of first covering are respectively the first transmission end and the first end of convert, the both ends of second covering are respectively the second transmission end and the second end of convert, first end of convert and the connection of the second end of convert, first covering and the second covering are coated at the outer wall of fibre core, and the both ends of fibre core are respectively in the first transmission end and the second transmission end.Single fibre core is coated also cross the first covering and the second covering, single fibre core by the segmentation of the first covering and the second covering.The number of fibre core is one or more in single second covering, the sum of fibre core number in all second coverings in the number of fibre core in corresponding first covering.
Description
[technical field]
The present invention relates to a kind of multicore upconversion fiber and production methods, belong to field fiber.
[background technique]
The flow of current optical fiber communication network is just grown at top speed with the ratio of 20%-60%.Optical communication system has been carried out end now
Mouth rate 100Gb/s, power system capacity 10Tb/s, 10 years futures, optical fiber telecommunications system capacity was up to 100Tb/s or so.
However, there is several limitations for optical fiber telecommunications system at present: firstly, in conjunction with low-loss transmission window and amplifier band
Width, useful spectrum efficiency are about 10THz;Secondly, signal can be faced with the spontaneous emission noise of amplifier in optical fiber transmission
(ASE) bring optical signal to noise ratio deteriorates, and by nonlinear fiber Kerr effect bring nonlinear impairments so that power system capacity
There are non-linear shannon limits, i.e., can be generated very sternly by improving signal-to-noise ratio to improve the transmission quality of spectral efficient signal
The nonlinear distortion of weight.Space division multiplexing technology (SDM) based on multi-core optical fiber and less fundamental mode optical fibre, which becomes, breaks through fiber optic communication
The inevitable choice of power system capacity limitation.
Multi-core optical fiber application prospect is more wide, but multi-core optical fiber needs spacial alignment to encapsulate, it is necessary to be applied to multicore
Optical fibre array connects rear Cheng Duan with multi-core optical fiber or couples with connector.Well-known optical fiber producer is more in exploitation both at home and abroad at present
Core fibre there are the multi-core optical fiber concept of multiple fibre cores is to be proposed by France Telecom in 1994 in same clad region, and general
Logical single-core fiber is compared, and optical cable density improves many times.Current simple optical fiber transmission capacity has already appeared bottleneck, further expands
Large capacity, which must be taken into consideration, becomes plural kernel single-core fiber, i.e., by the multi-core optical fiber of the multiple fibre cores of covering.
[summary of the invention]
A kind of multicore upconversion fiber and life are provided technical problem to be solved by the present invention lies in overcome the deficiencies in the prior art
Production method realizes that multi-core optical fiber connects end to end, improves optical cable density.
Above-mentioned technical problem is solved, the present invention adopts the following technical scheme:
A kind of multicore upconversion fiber, including fibre core, the first covering and more second coverings, the both ends of the first covering are respectively
One transmission end and the first end of convert, the both ends of the second covering are respectively the second transmission end and the second end of convert, the first end of convert and
The connection of second end of convert, the first covering and the second covering are coated at the outer wall of fibre core, and the both ends of fibre core are respectively in the first transmission
End and the second transmission end.
The invention has the benefit that
Single fibre core is also cross the first covering and the second covering, fragmented packets of the single fibre core by the first covering and the second covering
It covers.The number of fibre core is one or more in single second covering, in corresponding first covering all the in the number of fibre core
The sum of fibre core number in two coverings.For only having fibre core in every second covering, the second covering is coated with it at this time
Fibre core forms single-core fiber, and all fibre cores that corresponding first covering is coated with it form multi-core optical fiber, all single-core fibers
The sum of message transmission rate is that the message transmission rate of multi-core optical fiber realizes single and multicore by multicore upconversion fiber
Between structure conversion.The technique of alignment of single-core fiber is quite mature, therefore the single-core fiber that the second covering is formed holds very much
It is easily aligned with extraneous single-core fiber, the multi-core optical fiber that the first covering is formed by only needs to carry out in the position far from single-core fiber
The alignment of unilateral multicore does not need the alignment of bilateral multicore, increases between optical fiber alignment accuracy end to end, reduces pair
Quasi- workload.
Fibre core quantity of the present invention is no less than the second covering quantity, and every second covering is coated at least one fibre
Core.
Fibre core quantity of the present invention is equal to the second covering quantity, and every second covering is coated with a fibre core.
Multicore upconversion fiber of the present invention further includes protective layer, and protective layer is coated on the first covering and/or the second covering
Outer wall.
First end of convert and the second end of convert of the present invention are integrally formed.
A kind of production method of multicore upconversion fiber, in turn includes the following steps:
Step 1): choosing multifiber and close up to form fiber optic bundle, and optical fiber includes fibre core and the second packet for being coated on fibre core outer wall
Layer；
Step 2: heating the middle section of fiber optic bundle, carries out stretching to the front and rear sections of fiber optic bundle in heating process and is twisted, makes
Second covering in fiber optic bundle middle section heats to form the first covering；
Step 3): the first covering is cut off, two multicore upconversion fibers are formed.
It is prepared by existing conventional fiber structure, is not needed to carry out fibre core individually operated, it is thus only necessary to the
Two coverings carry out hot melt and form the first covering, therefore the production required precision of entire multicore upconversion fiber is lower.Secondly sufficiently sharp
With the current material of optical fiber structure, do not need additionally the production of multicore upconversion fiber to can be completed, together using other consumptive materials substantially
When also basically will not produce other waste materials, production cost is lower, also more environmentally-friendly.It, can be according to life also with the above method
It produces and needs, produce the multicore upconversion fiber of different length specification, and two can be produced every time, production chains and production
Efficiency is higher.
In step 1) of the present invention, optical fiber further includes the protective layer being coated on the outside of the second covering, right before step 1) carries out
The protective layer in optical fiber middle section is removed.
In step 2 of the present invention, the front and rear sections of fiber optic bundle pass through clamping device and are clamped, and clamping device includes opening up
There is the pedestal of V-groove, the bottom of pedestal offers the vacuum sucking holes being connected to V-groove, and air-breathing makes fiber optic bundle at vacuum sucking holes
It is extruded on the side wall of V-groove.
Clamping device of the present invention further includes briquetting, adjusting screw and fixed plate, and fixed plate lid closes on V-groove,
Briquetting is located in V-groove, and adjusting screw is threaded in fixed plate, and the both ends of adjusting screw are located at the two of fixed plate
Side, one end that adjusting screw is located in V-groove are fixed with briquetting, and briquetting is extruded on fiber optic bundle.
The other features and advantages of the invention will the detailed exposure in following specific embodiment, attached drawing.
[Detailed description of the invention]
Following further describes the present invention with reference to the drawings:
Fig. 1 is the schematic perspective view one of 1 multicore upconversion fiber of the embodiment of the present invention；
Fig. 2 is the schematic perspective view two of 1 multicore upconversion fiber of the embodiment of the present invention；
Fig. 3 is the schematic perspective view of fiber optic bundle in step 3) in the embodiment of the present invention 3；
Fig. 4 is the schematic perspective view of fiber optic bundle original state in step 4) in the embodiment of the present invention 3；
Fig. 5 terminates schematic perspective view when state for fiber optic bundle in step 4) in the embodiment of the present invention 3；
Fig. 6 is the schematic perspective view of fiber optic bundle in step 5) in the embodiment of the present invention 3；
Fig. 7 is clamping device working condition flowering structure schematic diagram in the embodiment of the present invention 3；
Fig. 8 is schematic diagram of main cross-sectional structure under clamping device working condition in the embodiment of the present invention 3.
[specific embodiment]
The technical solution of the embodiment of the present invention is explained and illustrated below with reference to the attached drawing of the embodiment of the present invention, but following realities
It applies example to be merely a preferred embodiment of the present invention, and not all.Based on the implementation example in the implementation mode, those skilled in the art are not having
Obtained other embodiments under the premise of creative work are made, protection scope of the present invention is belonged to.
In the following description, occur term "inner", "outside", "upper", "lower", the indicating positions such as "left", "right" or
Positional relationship description embodiment merely for convenience and simplified description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Embodiment 1:
Referring to Fig. 1-2, it is provided in this embodiment be a kind of multicore upconversion fiber, including protective layer 4, fibre core 1, the first covering 2 with
And more second coverings 3.Such as 3 quantity of the second covering shares seven in the present embodiment.The quantity of fibre core 1 is equal to the second covering 3
Quantity, 1 quantity of fibre core are also seven.
The both ends of first covering 2 are respectively the first transmission end 21 and the first end of convert 22, and the both ends of the second covering 3 are respectively
Second transmission end 31 and the second end of convert, the first end of convert 22 are connected with the second end of convert.First covering 2 and the second covering 3 packet
Be overlying at the outer wall of fibre core 1, wherein every second covering 3 is coated with a fibre core 1, every second covering 3 be coated on it
Internal fibre core 1 is corresponding, so that every second covering 3 and corresponding fibre core 1 form single-core fiber.First covering 2 coats simultaneously
All fibre cores 1, therefore the first covering 2 and all fibre cores 1 constitute multi-core optical fiber.
Any one fibre core 1 is interspersed in the first covering 2 and the second corresponding covering 3 simultaneously, therefore the two of fibre core 1
End is respectively at the first transmission end 21 and the second transmission end 31 of corresponding second covering 3 of fibre core 1.First covering 2 and each
A second covering 3 cooperates, and realizes the full cladding to all fibre cores 1.
In the present embodiment, any one fibre core 1 is located at the end at the second transmission end 31 and receives signal, is located at the first transmission
The end at 21 is held to send signal.Correspondingly, the signaling rate where the first transmission end 21 is seven second coverings 3
The sum of signaling rate where second transmission end 31.By the cooperation of the second covering 3 and the first covering 2, list is realized
Conversion between core fibre and multi-core optical fiber.
Since the technique of alignment of single-core fiber is quite mature, can be easy to guarantee what the second covering 3 was formed
Single-core fiber is aligned with extraneous single-core fiber, is connected as long as furthermore carrying out a multi-core optical fiber alignment coupling at the first transmission end 21
Termination process, do not need the first transmission end 21 and 22 both-end of the first end of convert and meanwhile carry out multi-core optical fiber alignment be of coupled connections,
Alignment accuracy end to end is increased between optical fiber, operation is reduced and requires.
In order to protect each second covering 3, protective layer 4 is coated on each second covering 3 in the present embodiment
Outer wall on.It is protected of course for 2 surface of the first covering, protective layer 4 can also be coated on the outer wall of the first covering 2
On.
The connection type of first end of convert 22 and the second end of convert is not limited to be adhered, be integrally formed, but in order to reduce
Or the variation of refractive index at the first end of convert 22 and the second end of convert is avoided, lead to the loss of signal, first turn in the present embodiment
It changes end 22 and the second end of convert is attached using integrally formed mode.
Embodiment 2:
The present embodiment the difference from embodiment 1 is that, fibre core quantity is no less than the second covering quantity, and every second covering wraps
It being covered at least one fibre core, therefore the second covering of part forms single-core fiber, the second covering of part forms multi-core optical fiber, when
When fibre core quantity is no less than the second covering quantity twice, all the second covering formation multi-core optical fibers can be made.It is realized with this more
The conversion of not same core number between core fibre-multi-core optical fiber.
Embodiment 3:
Provided in this embodiment is a kind of production method of multicore upconversion fiber, is in turn included the following steps:
Step 1): choosing multifiber, and wherein optical fiber includes fibre core 1, the second covering 3 for being coated on 1 outer wall of fibre core and cladding
Protective layer 4 in 3 outside of the second covering, the both ends of the second covering 3 are the second transmission end 31, the optical fiber chosen in the present embodiment
For single-core fiber；
Step 2: removing the protective layer 4 in optical fiber middle section, keeps second covering 3 in optical fiber middle section exposed；
Step 3): all optical fiber are closed up to form fiber optic bundle 5；
Step 4): the front and rear sections of fiber optic bundle 5 pass through clamping device 6 and are clamped, and exposed to the middle section of fiber optic bundle 5 second
Covering 3 is heated, and carries out stretching rotation to the front and rear sections of fiber optic bundle 5 in heating process, so that 5 middle section of fiber optic bundle is different
Exposed second covering 3 is intertwined, and all second coverings 3 hot melt for keeping 5 middle section of fiber optic bundle exposed forms the first covering 2, so
After cooled down；
Step 5): by the first covering 2 to half cut-off, forming two multicore upconversion fibers, and the section part of multicore upconversion fiber is the
The junction of one transmission end 21, the first covering 2 and the second covering 3 is the first end of convert 22.
In step 3), gap, the second covering 3 in step 4) are had after closing up due to all optical fiber in fiber optic bundle 5
It is heated in melting process, can gradually fill up the gap, in 2 forming process of the first covering, 5 diameter of fiber optic bundle can gradually drop
It is low, finally make the diameter of the first covering 2 and existing multi-core optical fiber as consistent as possible.
What furthermore the first covering 2 and all fibre cores 1 inside it were formed in step 5) is multi-core optical fiber, and two multicores turn
Changing optical fiber is to be cut off to be formed by same root multi-core optical fiber, therefore the two multicore upconversion fibers formed can guarantee accurate multicore
The coupling of optical fiber-multi-core optical fiber.
Clamping device 6 includes pedestal 61, briquetting 64, adjusting screw 65 and the fixed plate 66 for offering V-groove 62.Pedestal
61 is horizontal positioned, and fiber optic bundle 5 is lain in a horizontal plane on the side wall of V-groove 62, and the side wall of V-groove 62 is supported fiber optic bundle 5, bottom
The bottom of seat 61 offers the vacuum sucking holes 63 being connected to V-groove 62, and air-breathing makes fiber optic bundle 5 be extruded in V at vacuum sucking holes 63
On the side wall of type groove 62.
The lid of fixed plate 66 closes on V-groove 62, and briquetting 64 is located in V-groove 62, and adjusting screw 65 is threaded in fixation
On plate 66, the both ends of adjusting screw 65 are located at the two sides of fixed plate 66, and one end of adjusting screw 65 is located at outside V-groove 62,
To facilitate user to adjust, the other end of adjusting screw 65 is located in V-groove 62, and screw thread adjusts adjusting screw 65 in fixed plate 66
Position, to adjust the position in V-groove 62 of briquetting 64, thus by fiber optic bundle 5 compacting on the side wall of V-groove 62, with to the greatest extent
It may make the second mutually winding of covering 3 exposed in step 4).
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, is familiar with
The those skilled in the art should be understood that the present invention includes but is not limited to attached drawing and interior described in specific embodiment above
Hold.Any modification without departing from function and structure principle of the invention is intended to be included in the range of claims.
Claims (9)
1. a kind of multicore upconversion fiber, it is characterised in that: including fibre core, the first covering and more second coverings, the first covering
Both ends be respectively the first transmission end and the first end of convert, the both ends of the second covering are respectively the second transmission end and the second conversion
End, the first end of convert and the connection of the second end of convert, the first covering and the second covering are coated at the outer wall of fibre core, the both ends of fibre core
Respectively in the first transmission end and the second transmission end.
2. multicore upconversion fiber according to claim 1, it is characterised in that: the fibre core quantity is no less than the second covering number
Amount, every second covering are coated at least one fibre core.
3. multicore upconversion fiber according to claim 2, it is characterised in that: the fibre core quantity is equal to the second covering number
Amount, every second covering are coated with a fibre core.
4. multicore upconversion fiber according to claim 1, it is characterised in that: the multicore upconversion fiber further includes protection
Layer, protective layer are coated on the outer wall of the first covering and/or the second covering.
5. multicore upconversion fiber described in -4 any claims according to claim 1, it is characterised in that: first end of convert
It is integrally formed with the second end of convert.
6. a kind of production method of multicore upconversion fiber, it is characterised in that: in turn include the following steps:
Step 1): choosing multifiber and close up to form fiber optic bundle, and optical fiber includes fibre core and the second packet for being coated on fibre core outer wall
Layer；
Step 2: heating the middle section of fiber optic bundle, carries out stretching to the front and rear sections of fiber optic bundle in heating process and is twisted, makes
Second covering in fiber optic bundle middle section heats to form the first covering；
Step 3): the first covering is cut off, two multicore upconversion fibers are formed.
7. the production method of multicore upconversion fiber according to claim 6, it is characterised in that: in step 1), optical fiber is also wrapped
The protective layer being coated on the outside of the second covering is included to remove the protective layer in optical fiber middle section before step 1) carries out.
8. the production method of multicore upconversion fiber according to claim 6, it is characterised in that: in step 2, fiber optic bundle
Front and rear sections pass through clamping device and are clamped, and clamping device includes the pedestal for offering V-groove, and the bottom of pedestal offers
The vacuum sucking holes being connected to V-groove, air-breathing is extruded in fiber optic bundle on the side wall of V-groove at vacuum sucking holes.
9. the production method of multicore upconversion fiber according to claim 8, it is characterised in that: the clamping device further includes
Briquetting, adjusting screw and fixed plate, fixed plate lid close on V-groove, and briquetting is located in V-groove, and adjusting screw is threadedly coupled
In fixed plate, the both ends of adjusting screw are located at the two sides of fixed plate, and adjusting screw is located at one end and briquetting in V-groove
Fixed, briquetting is extruded on fiber optic bundle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910026327.9A CN109669235A (en) | 2019-01-11 | 2019-01-11 | A kind of multicore upconversion fiber and production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910026327.9A CN109669235A (en) | 2019-01-11 | 2019-01-11 | A kind of multicore upconversion fiber and production method |
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| Publication Number | Publication Date |
|---|---|
| CN109669235A true CN109669235A (en) | 2019-04-23 |
Family
ID=66150519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910026327.9A Pending CN109669235A (en) | 2019-01-11 | 2019-01-11 | A kind of multicore upconversion fiber and production method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103403589A (en) * | 2011-03-09 | 2013-11-20 | 古河电气工业株式会社 | Method for producing bundle structure, method for connecting fibers, bundle terminal structure, and fiber connection structure |
| CN105281185A (en) * | 2015-11-17 | 2016-01-27 | 山东圣达激光科技有限公司 | Multi-core fiber laser and preparation method of the same |
| CN105572803A (en) * | 2016-03-28 | 2016-05-11 | 中国人民解放军国防科学技术大学 | Fusion tapered optical fiber power beam combiner and manufacturing method thereof |
-
2019
- 2019-01-11 CN CN201910026327.9A patent/CN109669235A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103403589A (en) * | 2011-03-09 | 2013-11-20 | 古河电气工业株式会社 | Method for producing bundle structure, method for connecting fibers, bundle terminal structure, and fiber connection structure |
| CN105281185A (en) * | 2015-11-17 | 2016-01-27 | 山东圣达激光科技有限公司 | Multi-core fiber laser and preparation method of the same |
| CN105572803A (en) * | 2016-03-28 | 2016-05-11 | 中国人民解放军国防科学技术大学 | Fusion tapered optical fiber power beam combiner and manufacturing method thereof |
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