CN105759358B - A kind of all -fiber high brightness single mode optical fiber bundling device and production method - Google Patents
A kind of all -fiber high brightness single mode optical fiber bundling device and production method Download PDFInfo
- Publication number
- CN105759358B CN105759358B CN201610042379.1A CN201610042379A CN105759358B CN 105759358 B CN105759358 B CN 105759358B CN 201610042379 A CN201610042379 A CN 201610042379A CN 105759358 B CN105759358 B CN 105759358B
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- fiber
- bundling device
- glass bushing
- single mode
- 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.)
- Active
Links
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
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
Abstract
The invention discloses a kind of all -fiber high brightness single mode optical fiber bundling device and production methods, the optical-fiber bundling device includes glass bushing beam combination structure, multicore structure and the multimode fibre sequentially formed, glass bushing beam combination structure include original single mode optical fiber, etc. cladding indexs glass bushing and light casing, etc. cladding indexs glass bushing be located at the outside of original single mode optical fiber, the outside for the cladding indexs glass bushing such as light casing is then located at；Multicore structure includes multi-core optical fiber and the surrounding layer structure on the outside of multi-core optical fiber, and multimode fibre includes fibre core and the covering on the outside of fibre core.This method is the method for making above-mentioned optical-fiber bundling device.The present invention has many advantages, such as that the duty ratio of optical-fiber bundling device can be effectively improved, obtains compared with height output laser beam quality.
Description
Technical field
Present invention relates generally to optical fiber laser fields, refer in particular to a kind of based on the complete of light casing drawing cone method
Optical fiber high brightness single mode optical fiber bundling device.
Background technology
Optical fiber laser has high conversion efficiency, good beam quality, compact-sized, easy heat radiation, good operating stability etc. excellent
Point has been widely used for industry and national defence.However, being limited by the mechanism such as fiber nonlinear effect and optics thermal damage
The output power of system, simple optical fiber laser can not possibly be promoted infinitely.In order to obtain the optical-fiber laser output of bigger, in multiple
The optical-fiber laser of constant power carry out close beam be a kind of effective means, needed for Primary Component be exactly optical-fiber bundling device.It compares
Have simple and compact for structure, using flexible etc. excellent in the optical-fiber bundling device of the light beam synthetic schemes of space structure, all optical fibre structure
Point can avoid space optical path from adjusting, and the promotion of power is limited solely by optical-fiber bundling device itself.Beam is closed using optical-fiber bundling device
Have become effective selection scheme of large-power optical fiber laser output, but ordinary optic fibre bundling device can not be real due to optical fiber beam combination
Now very high duty ratio can cause beam quality to be degenerated to reduce laser brightness.
The optical-fiber bundling device of all optical fibre structure is in fused biconical taper fiber optic bundle（Taper Fused Fiber Bundle,
TFB）On the basis of the optical fibre device for preparing.It is that one section of optical fiber is peelled off coat, is then arranged together in a certain way,
Heating is allowed to melt in high temperature, while stretching optical fiber beam round about, optical fiber heating region are melted into melting cone fiber beam.
After cone waist cut-out, by cone area's output end and an output optical fibre welding, and then the laser after output end obtains closing beam.
Specifically, traditional bundling device includes mainly the parts such as optical fiber beam combination, fused biconical taper, fusion point and output optical fibre.
More single mode optical fibers are subjected to beam combination first, expected structure is obtained on cross section.Then beam combination is made by fused biconical taper
Close fiber optic afterwards is fused together, the circular configuration of formation rule.Finally, fiber optic bundle is cut in the areas molten homogeneous La Zhui,
Welding is carried out with output optical fibre.In actual demand, also total is packaged, complete the making of optical-fiber bundling device.
Traditional optical-fiber bundling device be all multimode fibre output, this be determined by the lower duty ratio of optical fiber beam combination, and
The duty ratio of optical fiber beam combination is the covering fibre core by original fiber than determining.Using multimode fibre as output optical fibre, it is exactly
The feature more using output optical fibre pattern, mode field diameter is big matches to realize with the light field of optical fiber beam combination.This bundling device although
Very low loss may be implemented, but due to being that multimode fibre exports, laser brightness drastically declines.
In order to improve duty ratio of the optical-fiber bundling device in beam combination, a kind of common method is to utilize chemical acid corrosion method pair
The distance of core diameter, increases the duty ratio of bundling device when covering is corroded to reduce cladding size, and then reduce beam combination.But
It is that there are two defects for this method：First, the optical fiber quality variation that chemical acid corrosion is later, is not easy to post-processing；Second is that fine
The distribution character of core light field determines that cladding size can not unlimitedly reduce.How not corroded to original fiber covering and
High brightness is realized while increasing the duty ratio of optical-fiber bundling device, and then obtain high power laser output, is further expanded it and is answered
It is critical issue urgently to be resolved hurrily with range.
Invention content
The technical problem to be solved in the present invention is that：For technical problem of the existing technology, the present invention provides one
Kind can effectively improve the duty ratio of optical-fiber bundling device, obtain all -fiber high brightness single-mode optics compared with height output laser beam quality
Fine bundling device and production method.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of all -fiber high brightness single mode optical fiber bundling device, including sequentially form glass bushing beam combination structure, multicore knot
Structure and multimode fibre, the glass bushing beam combination structure include original single mode optical fiber, etc. cladding indexs glass bushing and low folding
Rate glass bushing is penetrated, the cladding indexs glass bushing such as described is located at the outside of original single mode optical fiber, the light
Casing then be located at etc. cladding indexs glass bushing outside；The multicore structure includes multi-core optical fiber and is located at outside multi-core optical fiber
The surrounding layer structure of side, the multimode fibre include fibre core and the covering on the outside of fibre core.
The present invention further provides a kind of method for making above-mentioned optical-fiber bundling device, step is：
S1：Beam combination is carried out to original single mode optical fiber to collapse, obtain circle using the glass bushing equal with cladding index
The uniform cone area of covering；
S2：Secondary beam combination is carried out to the uniform cone area obtained in step S1 to collapse, obtain using light casing
The multi-core optical fiber structure of cross section rule；
S3：Adiabatic draw is carried out to the multi-core optical fiber structure that step S2 is obtained to bore, it is defeated as bundling device in uniformly cone area cutting
Go out optical fiber.
As being further improved for the method for the present invention：When carrying out fused biconical taper, glass bushing beam combination structure is fixed on
It stretches on mobile platform, fixed good position is promoted and adjusted using duration and degree of heating, by controlling the first optical fiber mobile platform and the second light
The movement speed of fine mobile platform realizes the drawing cone of predetermined shape.
Compared with the prior art, the advantages of the present invention are as follows：
1, a kind of all -fiber high brightness single mode optical fiber bundling device of the invention and production method, effectively increase optical-fiber bundling
The duty ratio of device obtains higher quality for outputting laser beam；The corrosion treatment to original fiber covering is avoided, conjunction is increased
The intensity of beam device.
2, of the invention a kind of all -fiber high brightness single mode optical fiber bundling device and production method, entire bundling device do not have welding
Point, avoids fusing operation；
3, a kind of all -fiber high brightness single mode optical fiber bundling device of the invention and production method, entire to draw cone region be all exhausted
Hot-drawn is bored, and energy dissipation is less, reduces the difficulty of radiating treatment.
Description of the drawings
Fig. 1 is the general structure schematic diagram of the present invention.
Fig. 2 is glass sock tube method fiber optic bundle fused biconical taper schematic diagram of the present invention.
Fig. 3 is that two-step method of the present invention eliminates covering plum blossom valve structure flow diagram.
Fig. 4 is the fiber optic bundle cross-sectional view before and after glass bushing airport is collapsed.
Fig. 5 is bundling device corresponding eigen mode schematic diagram in different drawing cone ratios.
Fig. 6 is light field evolution schematic diagram of bundling device under the conditions of low step mode incidence.
Fig. 7 is beam quality factor of the bundling device at different drawing cone ratios under the conditions of low step mode incidence.
Marginal data：
1, glass bushing beam combination structure；2, multicore structure；3, multimode fibre；11, original single mode optical fiber；12, the coverings folding such as
Penetrate rate glass bushing；13, light casing；21, multi-core optical fiber；22, surrounding layer structure；31, fibre core；32, covering.4、
Stretch mobile platform；41, the first optical fiber mobile platform；42, the second optical fiber mobile platform；5, duration and degree of heating.
Specific implementation mode
The present invention is described in further details below with reference to Figure of description and specific embodiment.
As shown in Figure 1, all -fiber high brightness single mode optical fiber bundling device of the present invention, draws to be based on light casing
The all -fiber high brightness single mode optical fiber bundling device of cone method, it includes the glass bushing beam combination structure 1 sequentially formed, multicore structure 2
With multimode fibre 3, wherein glass bushing beam combination structure 1 include original single mode optical fiber 11, etc. 12 and of cladding indexs glass bushing
Light casing 13, etc. cladding indexs glass bushing 12 be located at the outside of original single mode optical fiber 11, low-refraction glass
Glass casing 13 then be located at etc. cladding indexs glass bushing 12 outside；Multicore structure 2 is including multi-core optical fiber 21 and is located at multicore
The surrounding layer structure 22 in 21 outside of optical fiber, multimode fibre 3 include fibre core 31 and the covering 32 positioned at 31 outside of fibre core.
The present invention is bored by carrying out adiabatic draw to fused biconical taper fiber optic bundle so that is protected during the entire process of optical-fiber bundling device
Low step mode is held, with drawing cone degree to increase, the distance between fibre core 31 is gradually reduced, and bundling device duty ratio improves, and multicore is super
Mode excitation.When 31 size of fibre core further decreases, multicore super model ends and excites low order cladding mode, to realize high brightness
Optical-fiber bundling device exports.
For this purpose, the present invention further provides a kind of production method of above-mentioned optical-fiber bundling device, the specific steps are：
S1:Beam combination is carried out to original single mode optical fiber to collapse, justified using the glass bushing equal with 32 refractive index of covering
The uniform cone area of shape covering.
S2:Secondary beam combination is carried out to the uniform cone area obtained in step S1 to collapse, obtain using light casing 13
To 21 structure of multi-core optical fiber of cross section rule.
S3:Adiabatic draw is carried out to 21 structure of multi-core optical fiber that step S2 is obtained to bore, and bundling device is used as in uniformly cone area cutting
Output optical fibre.
As shown in Fig. 2, for the glass sock tube method fiber optic bundle fused biconical taper schematic diagram of the present invention.By glass bushing beam combination structure
1 is fixed on stretching mobile platform 4, and duration and degree of heating 5, which promotes, simultaneously adjusts fixed good position, passes through and controls 41 He of the first optical fiber mobile platform
The movement speed of second optical fiber mobile platform 42 realizes the drawing cone of predetermined shape.
As shown in figure 3, eliminating the flow of covering plum blossom valve structure using two-step method in concrete application example for the present invention
Schematic diagram.The first step with etc. cladding indexs glass bushing 12 beam combination is carried out to original single mode optical fiber, pass through melting shown in Fig. 2
Cone method is drawn to obtain regular circular structure；Second step adds light casing 13 on the basis of the first step, passes through Fig. 2
Shown in fused biconical taper method obtain scheduled multimode fibre 3.
As shown in figure 4, the fiber optic bundle before and after glass bushing airport is collapsed in concrete application example for the present invention is transversal
Face schematic diagram.Wherein Fig. 4 (a) is the optical fiber beam combination cross-sectional view before glass bushing airport is collapsed；Fig. 4 (b) is glass
Multi-core optical fiber feature cross-section schematic diagram after casing airport is collapsed.Wherein, original single mode optical fiber cladding radius is r, glass sock
Tube thickness is d, and obtained multi-core optical fiber structure cladding radius is R.
As shown in figure 5, being bundling device of the present invention corresponding eigen mode schematic diagram in different drawing cone ratios.Wherein Fig. 5
(a) it is LP01 moulds；Fig. 5 (b) and Fig. 6 is respectively the LP11 moulds of two kinds of forms.Wherein cone ratio is drawn to be defined as：TR=Rt/R（RtFor
The cladding radius of corresponding position, R are that airport collapses but do not carry out drawing cladding diameter when boring completely）.
As shown in fig. 6, being light field evolution schematic diagram of the bundling device of the present invention under the conditions of low step mode incidence.Wherein Fig. 6
The first behavior LP01 moulds；The second row of Fig. 6 and the third line of Fig. 6 are respectively the LP11 moulds of two kinds of forms.
As shown in fig. 7, in concrete application example, bundling device is at different drawing cone ratios under the conditions of low step mode incidence
M2The factor.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention should be regarded as the protection of the present invention
Range.
Claims (3)
1. a kind of all -fiber high brightness single mode optical fiber bundling device, which is characterized in that including the glass bushing group binding sequentially formed
Structure（1）, multicore structure（2）And multimode fibre（3）, the glass bushing beam combination structure（1）Including original single mode optical fiber（11）, etc.
Cladding index glass bushing（12）With light casing（13）, the cladding indexs glass bushing such as described（12）It is located at
Original single mode optical fiber（11）Outside, the light casing（13）Then be located at etc. cladding indexs glass bushing（12）
Outside；The multicore structure（2）Including multi-core optical fiber（21）And it is located at multi-core optical fiber（21）The surrounding layer structure in outside（22）,
The multimode fibre（3）Including fibre core（31）And it is located at fibre core（31）The covering in outside（32）.
2. a kind of method for making all -fiber high brightness single mode optical fiber bundling device as described in claim 1, feature exists
In step is：
S1:Using and covering（32）The equal glass bushing of refractive index carries out beam combination to original single mode optical fiber and collapses, and obtains circle
The uniform cone area of covering；
S2:Utilize light casing（13）Secondary beam combination is carried out to the uniform cone area obtained in step S1 to collapse, and is obtained
The multi-core optical fiber of cross section rule（21）Structure；
S3:The multi-core optical fiber that step S2 is obtained（21）Structure carries out adiabatic draw and bores, defeated as bundling device in uniformly cone area cutting
Go out optical fiber.
3. the method according to claim 2 for making above-mentioned optical-fiber bundling device, which is characterized in that carrying out melting drawing
When cone, by glass bushing beam combination structure（1）It is fixed on stretching mobile platform（4）On, utilize duration and degree of heating（5）It promotes and adjusts and fix
Position, by controlling the first optical fiber mobile platform（41）With the second optical fiber mobile platform（42）Movement speed, realize preboarding
The drawing of shape is bored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610042379.1A CN105759358B (en) | 2016-01-22 | 2016-01-22 | A kind of all -fiber high brightness single mode optical fiber bundling device and production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610042379.1A CN105759358B (en) | 2016-01-22 | 2016-01-22 | A kind of all -fiber high brightness single mode optical fiber bundling device and production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105759358A CN105759358A (en) | 2016-07-13 |
| CN105759358B true CN105759358B (en) | 2018-10-12 |
Family
ID=56342488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610042379.1A Active CN105759358B (en) | 2016-01-22 | 2016-01-22 | A kind of all -fiber high brightness single mode optical fiber bundling device and production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105759358B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3654824A4 (en) * | 2017-07-17 | 2021-04-21 | Z Square Ltd. | Enhancing imaging by multicore fiber endoscopes |
| CN111061011A (en) * | 2019-11-20 | 2020-04-24 | 桂林电子科技大学 | Improved single-mode fiber and multi-core fiber coupler and preparation method thereof |
| CN111045153A (en) * | 2019-11-20 | 2020-04-21 | 桂林电子科技大学 | Low-loss single-mode fiber and annular core fiber coupler and preparation method thereof |
| CN111552034A (en) * | 2020-04-10 | 2020-08-18 | 桂林电子科技大学 | Multi-core optical fiber MXN type multi-path beam splitter |
| CN112290371B (en) * | 2021-01-04 | 2021-03-19 | 中国工程物理研究院激光聚变研究中心 | Laser beam combining system based on square optical fiber beam combiner |
| CN113149422A (en) * | 2021-01-14 | 2021-07-23 | 艾菲博(宁波)光电科技有限责任公司 | Method and device for preparing high-duty-ratio multi-core microstructure communication optical fiber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2191873A (en) * | 1986-06-18 | 1987-12-23 | Zeiss Stiftung | Fibre-optic light guide which is resistant to high temperatures in its end-face region |
| US6629784B1 (en) * | 1996-03-13 | 2003-10-07 | Bookham Technology Plc | Waveguides to photodetector assembly |
| CN102841408A (en) * | 2011-06-23 | 2012-12-26 | 中国科学院西安光学精密机械研究所 | Production technology of optical fiber combiner based on capillary tube |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7492998B2 (en) * | 2004-08-31 | 2009-02-17 | Corning Incorporated | Fiber bundles and methods of making fiber bundles |
| US8351114B2 (en) * | 2009-02-02 | 2013-01-08 | Northrop Grumman Systems Corporation | System and method for combining multiple fiber amplifiers or multiple fiber lasers |
| US8830566B2 (en) * | 2009-08-07 | 2014-09-09 | Northrop Grumman Systems Corporation | Multi-channel fiber laser amplifier combining apparatus including integrated spectral beam combination and a tapered fiber bundle having multiple fiber outputs |
-
2016
- 2016-01-22 CN CN201610042379.1A patent/CN105759358B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2191873A (en) * | 1986-06-18 | 1987-12-23 | Zeiss Stiftung | Fibre-optic light guide which is resistant to high temperatures in its end-face region |
| US6629784B1 (en) * | 1996-03-13 | 2003-10-07 | Bookham Technology Plc | Waveguides to photodetector assembly |
| CN102841408A (en) * | 2011-06-23 | 2012-12-26 | 中国科学院西安光学精密机械研究所 | Production technology of optical fiber combiner based on capillary tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105759358A (en) | 2016-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105759358B (en) | A kind of all -fiber high brightness single mode optical fiber bundling device and production method | |
| JP5170863B2 (en) | Manufacturing method of holey fiber | |
| US10690854B2 (en) | Rotary optical beam generator | |
| CN101884146B (en) | Active optical fiber and method for fabricating an active optical fiber | |
| CN105633778B (en) | High-order mode filters out fiber end face pumping coupler and preparation method thereof | |
| US6336749B1 (en) | Jointed optical fibers | |
| EP0930278A2 (en) | Method and apparatus for producing fused fiber bundles | |
| CN109031527B (en) | High-power optical fiber end cap and manufacturing method thereof | |
| CN107111051A (en) | Optical module and the method for producing such optical module | |
| CN102508336A (en) | Pump optical fiber combiner and preparation method thereof | |
| JP2009025531A (en) | Holey fiber and method for manufacturing holey fiber | |
| CN107765368B (en) | Welding method of hollow anti-resonance optical fiber | |
| US10656334B2 (en) | Rotary optical beam generator | |
| CN104185805A (en) | Device for converting the transverse spatial profile of intensity of a light beam, preferably using a microstructured optical fibre | |
| US11347069B2 (en) | Rotary optical beam generator | |
| CN105271704B (en) | A kind of production method of doubly clad optical fiber | |
| US20180239083A1 (en) | Bi-directional pump light fiber for energy transfer to a cladding pumped fiber | |
| JP4116479B2 (en) | Tapered photonic crystal fiber, manufacturing method thereof, and connection method of photonic crystal fiber | |
| Kang et al. | Broadband low-loss fan-in/fan-out devices for multicore fibers | |
| CN103698841A (en) | Microstructure fiber device | |
| US6768849B2 (en) | Systems and methods for fabricating varying waveguide optical fiber device | |
| CN203480073U (en) | Fiber combiner | |
| CN105929482A (en) | Fiber end cap and manufacturing method thereof | |
| JP5933561B2 (en) | NA reduction of fiber optic coupler | |
| CN109239850A (en) | A kind of side-pumping bundling device and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |