CN106054332A - Laser transmission fiber with cladding mode stripping - Google Patents
Laser transmission fiber with cladding mode stripping Download PDFInfo
- Publication number
- CN106054332A CN106054332A CN201610572817.5A CN201610572817A CN106054332A CN 106054332 A CN106054332 A CN 106054332A CN 201610572817 A CN201610572817 A CN 201610572817A CN 106054332 A CN106054332 A CN 106054332A
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- CN
- China
- Prior art keywords
- laser transmission
- transmission fiber
- laser
- fiber
- protection sleeve
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- 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.)
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Classifications
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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
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/4436—Heat resistant
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
The invention discloses a laser transmission fiber with cladding mode stripping, which comprises a bare fiber, a liquid metal layer and a protective casing, wherein the bare fiber comprises a fiber core and a cladding coating the fiber core; the protective casing sleeves the bare fiber; and the liquid metal layer is located between the bare fiber and the protective casing. The laser transmission fiber of the invention can timely strip laser leaked to the cladding, and heat concentration is avoided; as the liquid metal is good in cooling performance, the laser transmission fiber is not likely to be damaged, and the service life of the laser transmission fiber is improved; and the laser transmission fiber with cladding mode stripping can be widely applied to the field requiring high-power laser transmission, such as laser processing.
Description
Technical field
The invention belongs to laser technology field, relate to a kind of laser transmission fiber.
Background technology
Along with the development of laser technology, various novel high-power laser instrument continue to bring out with laser process equipment, more
Many laser process equipments use the mode of fiber-optic transfer laser to replace traditional lens reflecting optical transport mode.Laser flexible
Transmission is the development trend of laser process equipment.
Traditional laser transmission fiber structure includes fibre core, covering and coat, and the material of coat is generally polymer.
When high power laser light is coupled into Transmission Fibers, it is not adjusted in place due to optical coupling system or owing to excessive fiber is curved
Song, all can make the laser of transmission in fiber core enter fibre cladding, makes heat accumulate at covering and coat interface, thus
Make coat burn, and and then burn covering and fiber core.Occur for anti-situation here, when transmitting high power laser light, one
As at the two ends of high power transmission optical fiber, a length of 5 centimetres to 20 centimetres, the coat of certain length can be removed, replace
Be certain thickness high index of refraction glue, high index of refraction glue refractive index be more than fibre cladding quartz refractive index, formed fibre cladding
Pattern detacher, eliminates harmful cladding light.
But, in this case, heat can accumulate in high index of refraction Jiao Chu, and the high index of refraction glue normal phase is operated in higher temperature
Under, its character can change, and affects the performance of whole laser transmission fiber, even burns optical fiber coating.It addition, optical fiber exists
During mid portion bending, it is possible to make the laser of fibre core, it is transferred in covering, causes optical fiber to burn.
Summary of the invention
The purpose of the present invention is contemplated to solve the deficiency that above-mentioned background technology exists, it is provided that a kind of band cladding mode stripping
From laser transmission fiber, it is intended to solve to accumulate between covering and coat cause optical fiber owing to laser enters heat after covering
The problem burnt, in the present invention, laser transmission fiber can be used for the above laser power transmission of kilowatt rank.
For reaching above-mentioned purpose, the invention provides the laser transmission fiber that a kind of band cladding mode is peeled off, Laser Transmission
Optical fiber includes bare fibre, liquid-metal layer and protection sleeve pipe.
Bare fibre, including fibre core and the covering being coated on outside fibre core, is used for transmitting optical signal, and makes optical signal constrain in fibre
Core transmits.
Protection sleeve pipe, is placed on outside bare fibre, is used for protecting bare fibre and heat radiation.
Liquid-metal layer, leaks to laser and the heat radiation of covering for peeling off, liquid-metal layer be positioned at protection sleeve pipe in
Between covering.
Further, laser transmission fiber also includes the seal member being positioned at protection sleeve pipe two ends, seal member and protection
Sleeve pipe and bare fibre seal and coordinate, and for forming confined space with bare fibre and protection sleeve pipe, prevent liquid-metal layer to run off.
Further, laser transmission fiber also includes the optical fiber end cap being positioned at laser transmission fiber input, is used for protecting
Fiber end face, reduces the power density of fiber end face, it is simple to fixing and grip optical fiber.
Further, laser transmission fiber also includes the packaging system of band active cooling, and it is the coldest that protection sleeve is positioned at band
But inside packaging system, for cooling protection sleeve.
Further, bare fibre cross sectional shape is square, circular or octagonal, can be used as the high power laser light of different field
Transmission.
Further, for the hydrargyrum of liquid, gallium or gallium-indium-tin alloy under liquid metal is room temperature.
Further, the material of seal member is resistant to elevated temperatures ultra-violet curing glue or metallic tin.
Further, the material of protection sleeve pipe is metallic copper, is more conducive to heat radiation.
By the above technical scheme that the present invention is contemplated, compared with prior art, following beneficial effect is obtained:
(1) in the present invention, laser transmission fiber comprises liquid-metal layer, and liquid-metal layer can be to the laser entering covering
Gradually peel off, form cladding mode detacher, it is to avoid heat is concentrated；Secondly, different angles in covering are swashed by liquid-metal layer
Light has different absorbances, it is to avoid heat is concentrated；Further, since liquid-metal layer is coated with whole bare fibre, at whole laser
Transmission Fibers forms cladding mode and peels off, and the laser for position any in covering can be peeled off in time, it is to avoid heat is concentrated.
(2) liquid metal boiling point is high, and the uniformly transfer heat in good heat conductivity, beneficially Laser Transmission direction is formed without heat
Accumulative effect；Liquid metal material is absorbing after cladding light heat, effectively heat can be transferred to copper pipe, and the heat on copper pipe
Amount can be dispersed by active cooling or passive cooling.
(3) this laser transmission fiber can peel off less desirable laser in covering timely and effectively, it is to avoid heat is concentrated,
High temperature can be stood, additionally it is possible to spread rapidly by heat so that laser transmission fiber is hardly damaged, improve laser simultaneously
Lose the service life of fibre, can be widely applied to need to transmit high power laser light field, such as, laser machine.
Accompanying drawing explanation
Fig. 1 is the front view of laser transmission fiber；
Fig. 2 is the side view of laser transmission fiber；
Fig. 3 is the schematic diagram that laser transmission fiber cladding mode is peeled off；
Wherein, 1 is fibre core；2 is covering；3 is protection sleeve；4 is seal member；5 is liquid-metal layer.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.
As it is shown in figure 1, bare fibre includes fibre core 1 and the covering 2 being coated on outside fibre core, for propagated laser simultaneously by laser
Being constrained in fibre core, the material of the fibre core in the present embodiment bare fibre and covering can be any one of existing fiber material,
Such as quartz or the quartz material of doping, cladding index is less than the refractive index of fibre core, and bare fibre cross sectional shape can be existing
There are any one of bare fibre shape, the most circular, square or octagonal, can be used as the high power laser light transmission light in various field
Fine.
Protection sleeve 3 is placed on outside bare fibre, and protection sleeve 3 is for protecting bare fibre not destroyed by external environment, same
Time for carrying out heat exchange with liquid-metal layer, have preferably bending and pliability to demonstrate,prove protection sleeve pipe, wall thickness is chosen as 200
Micron is to 500 microns.Due to copper preferably heat conductivity, the present embodiment is protected bush material be chosen as metal copper material.
Seal member 4 is positioned at protection sleeve 3 two ends, seals coordinate with bare fibre and protection sleeve 3, select high temperature resistant and lead
Hot good encapsulant, such as ultra-violet curing glue, metallic tin etc..
Liquid-metal layer 5 is positioned at the sealing space formed by bare fibre, protection sleeve 3 and seal member 4.Liquid metal
Layer is the thinnest, and laser can be caused transmitted through liquid-metal layer, and liquid-metal layer is the thickest, can cause dispelling the heat in time, so liquid
State metal coating 4 thickness selects at tens microns to hundreds of micron.
As in figure 2 it is shown, fibre core 1 cross section is circular, covering 2, protection sleeve 3 and seal member 4 cross section are annular.
As it is shown on figure 3, when the laser of a certain angle enters covering, cladding light is entering covering and liquid-metal layer every time
During interface, having fraction of laser light to be absorbed, remaining laser is reflected, and laser, in weakened after several secondary reflections, enters bag
The laser of layer is gradually stripped out, and is gradually absorbed in difference, liquid-metal layer is not likely to produce hot-spot situation；By
In liquid-metal layer, the laser of different angles being had different refractive indexs, absorbance is different along with angle difference, the most also may be used
So that being not likely to produce hot-spot situation on liquid-metal layer.
Further, liquid-metal layer is coated on whole bare fibre, forms cladding mode stripping on whole laser transmission fiber
From, can be effectively peeled off when laser beam enters laser transmission fiber due to reasons such as alignment error, beam quality not couplings
Enter the laser of covering, it is also possible to effectively peel off and enter the laser of covering due to the middle part overbending of laser transmission fiber,
The laser that can also peel off the reflection by processing workpiece and enter in covering, this timely and effective on whole laser transmission fiber
Peel off enter covering undesirably light ensure that Transmission Fibers is difficult to be burned out.
Further, since protection sleeve pipe surrounds liquid-metal layer in the laser beam direction of propagation, have bigger with liquid-metal layer
Contact area, is conducive to heat radiation, and liquid metal for conducting heat is preferable, and heat is not easy at one concentrate, it is ensured that Transmission Fibers is not
Easily it is burned out.
This laser transmission fiber can not only peel off in covering undesirably light timely and effectively, additionally it is possible to stands high temperature also
Heat is spread rapidly, improves the service life of laser transmission fiber, can be widely applied to need to transmit high power laser light
Field, such as, laser machine.
As it will be easily appreciated by one skilled in the art that and the foregoing is only presently preferred embodiments of the present invention, not in order to
Limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, all should comprise
Within protection scope of the present invention.
Claims (8)
1. the laser transmission fiber that a band cladding mode is peeled off, it is characterised in that include bare fibre, liquid-metal layer and protection
Sleeve pipe, wherein, bare fibre includes that fibre core and the covering being coated on outside fibre core, protection sleeve pipe are placed on outside bare fibre, liquid-metal layer
By between bare fibre and protection sleeve pipe.
Laser transmission fiber the most according to claim 1, it is characterised in that also include the sealing being positioned at protection sleeve pipe two ends
Parts, described seal member seals with protection sleeve pipe and bare fibre and coordinates.
Laser transmission fiber the most according to claim 1, it is characterised in that also include being positioned at laser transmission fiber input
Optical fiber end cap.
Laser transmission fiber the most according to claim 1, it is characterised in that also include the packaging system of band active cooling,
Described protection sleeve is positioned at inside the packaging system of described band active cooling.
5. according to the laser transmission fiber described in any one of claim 1-4, it is characterised in that described bare fibre cross sectional shape is
Square, circular or octagonal.
6. according to the laser transmission fiber described in any one of claim 1-4, it is characterised in that described liquid metal is hydrargyrum, gallium
Or gallium-indium-tin alloy.
7. according to the laser transmission fiber described in any one of claim 1-4, it is characterised in that the material of described seal member is
Ultra-violet curing glue or metallic tin.
8. according to the laser transmission fiber described in any one of claim 1-4, it is characterised in that described protection shell material is gold
Belong to copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610572817.5A CN106054332A (en) | 2016-07-20 | 2016-07-20 | Laser transmission fiber with cladding mode stripping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610572817.5A CN106054332A (en) | 2016-07-20 | 2016-07-20 | Laser transmission fiber with cladding mode stripping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106054332A true CN106054332A (en) | 2016-10-26 |
Family
ID=57188669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610572817.5A Pending CN106054332A (en) | 2016-07-20 | 2016-07-20 | Laser transmission fiber with cladding mode stripping |
Country Status (1)
| Country | Link |
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| CN (1) | CN106054332A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107340680A (en) * | 2017-06-27 | 2017-11-10 | 上海悉德信息科技有限公司 | Short distance laser projection system |
| CN109765663A (en) * | 2019-02-22 | 2019-05-17 | 武汉锐科光纤激光技术股份有限公司 | A kind of dual-headed laser transmission cable and preparation method thereof |
| CN110323654A (en) * | 2018-03-31 | 2019-10-11 | 深圳市创鑫激光股份有限公司 | Laser export head and laser |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5373576A (en) * | 1993-05-04 | 1994-12-13 | Polaroid Corporation | High power optical fiber |
| CN104037598A (en) * | 2014-06-17 | 2014-09-10 | 中国人民解放军国防科学技术大学 | Efficient cooling method for high-power optical fibre |
| CN104185931A (en) * | 2011-12-19 | 2014-12-03 | Ipg光子公司 | High power metal clad mode absorber |
| US20160141826A1 (en) * | 2014-11-13 | 2016-05-19 | Bae Systems Information And Electronic Systems Integration Inc. | Liquid cladding for multiple clad fiber laser |
-
2016
- 2016-07-20 CN CN201610572817.5A patent/CN106054332A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5373576A (en) * | 1993-05-04 | 1994-12-13 | Polaroid Corporation | High power optical fiber |
| CN104185931A (en) * | 2011-12-19 | 2014-12-03 | Ipg光子公司 | High power metal clad mode absorber |
| CN104037598A (en) * | 2014-06-17 | 2014-09-10 | 中国人民解放军国防科学技术大学 | Efficient cooling method for high-power optical fibre |
| US20160141826A1 (en) * | 2014-11-13 | 2016-05-19 | Bae Systems Information And Electronic Systems Integration Inc. | Liquid cladding for multiple clad fiber laser |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107340680A (en) * | 2017-06-27 | 2017-11-10 | 上海悉德信息科技有限公司 | Short distance laser projection system |
| CN110323654A (en) * | 2018-03-31 | 2019-10-11 | 深圳市创鑫激光股份有限公司 | Laser export head and laser |
| CN109765663A (en) * | 2019-02-22 | 2019-05-17 | 武汉锐科光纤激光技术股份有限公司 | A kind of dual-headed laser transmission cable and preparation method thereof |
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Application publication date: 20161026 |