CN107870391A - A kind of method that femto-second laser auxiliary prepares fiber coupler - Google Patents
A kind of method that femto-second laser auxiliary prepares fiber coupler Download PDFInfo
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- CN107870391A CN107870391A CN201610853289.0A CN201610853289A CN107870391A CN 107870391 A CN107870391 A CN 107870391A CN 201610853289 A CN201610853289 A CN 201610853289A CN 107870391 A CN107870391 A CN 107870391A
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- Prior art keywords
- optical fiber
- femto
- pumping
- laser
- fibre
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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
- G02B6/255—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
- G02B6/24—Coupling light guides
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2555—Alignment or adjustment devices for aligning prior to splicing
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
The invention discloses a kind of method that femto-second laser auxiliary prepares fiber coupler, this method specifically includes following steps：1）, N roots pumping optical fiber and a signal optical fibre welding form to one, wherein N is the integer more than or equal to 1；2）, cut using femto-second laser on one end of each pumping optical fiber light output and form the angle of wedge, then the optical surface by the inclined-plane hot melt of the angle of wedge into total internal reflection.Using above method, pump light in pumping optical fiber enters in the covering of signal optical fibre after the reflection of the optical surface of total internal reflection, pump light hardly projects from end face again, therefore the pump light in each pumping optical fiber almost realizes that 100% is coupled in the covering of signal optical fibre, so as to realize miniaturization, the making of high power coupler.
Description
Technical field
The present invention relates to laser field, more particularly to a kind of method that femto-second laser auxiliary prepares fiber coupler.
Background technology
The technology of fused biconical taper is typically used when prior art makes fiber coupler, it is specific as follows：First by N root pumpings
Optical fiber is centered around outside a signal optical fibre and forms fibre bundle, is then placed on fibre bundle and draws fused biconical taper on cone machine to connect to form one
Body.The above method draws the method bored using violence, and peripheral pumping optical fiber not can determine that position during cone is drawn, therefore molten
The quality connect is unstable, it is impossible to which the relative position of adjustment pumping optical fiber and signal optical fibre is to adjust the hot spot of output light as needed
Quality and raising coupling efficiency.Moreover, also part pump light projects from the end face of pumping optical fiber, the loss that luminous energy be present lacks
Point.
The content of the invention
In order to solve deficiency of the prior art, it is an object of the invention to provide a kind of femtosecond with effectively high coupling ratios to swash
The method that light device auxiliary prepares fiber coupler.
To achieve the above object, the present invention uses following technical scheme：
A kind of method that femto-second laser auxiliary prepares fiber coupler, this method specifically include following steps：
1）, N roots pumping optical fiber and a signal optical fibre welding form to one, wherein N is the integer more than or equal to 1；
2）, cut using femto-second laser on one end of each pumping optical fiber light output and form the angle of wedge, then the inclined-plane heat by the angle of wedge
It is melt into the optical surface of total internal reflection.
Further, the step 1）Specific method it is as follows：
A, treat to be etched respectively with femto-second laser on the surface of weld portion in signal optical fibre and be adapted with each pumping optical fiber external diameter
Arc groove, each pumping optical fiber is fitted tightly on signal optical fibre in corresponding arc groove respectively to form fibre bundle；
B, above-mentioned fibre bundle is placed on and drawn on cone machine, draw cone machine to carry out melting drawing to the joint portion of signal optical fibre and pumping optical fiber
Stretch, so as to which N roots pumping optical fiber and signal optical fibre are connected to form one.
Further, the axial both ends of each arc groove pass through arcwall face transition.
The present invention uses above technical scheme, has the advantages that：
1st, the pump light in pumping optical fiber enters in the covering of signal optical fibre after the reflection of the optical surface of total internal reflection, pumping
Light hardly projects from end face again, therefore the pump light in each pumping optical fiber almost realizes 100% in the covering of signal optical fibre
Coupled, so as to realize miniaturization, the making of high power coupler.
2nd, fused biconical taper is carried out after each pumping optical fiber is positioned on the surface of signal optical fibre by arc groove again, is being drawn
The relative position of each pumping optical fiber and signal optical fibre can keep stable during cone, will not produce displacement, therefore fused biconical taper
Quality it is higher, more stable.And it is processed using femto-second laser and can etches required arc groove as needed
With the position of required cut-out and there is very high machining accuracy, therefore the optical quality of output light can be adjusted as needed
It is whole.
Brief description of the drawings
The present invention is described in further details below in conjunction with the drawings and specific embodiments：
Fig. 1 is step 1 of the present invention）In pass through the schematic diagram that arc groove and each pumping optical fiber coordinate on signal optical fibre surface；
Fig. 2 is step 1 of the present invention）Middle fibre bundle passes through the schematic diagram after fused biconical taper；
Fig. 3 is step 2 of the present invention）In each pumping optical fiber light output end form the schematic diagram on total internal reflection optical surface.
Embodiment
As shown in one of Fig. 1-3, method that a kind of femto-second laser auxiliary of the present invention prepares fiber coupler, this method tool
Body comprises the following steps：
1）, N roots pumping optical fiber and a signal optical fibre welding form to one, wherein N is the integer more than or equal to 1, this reality
Apply N=6, step 1 in example）Specific method it is as follows,
A, treat to be etched respectively with femto-second laser on the surface of weld portion in signal optical fibre 1 and mutually fitted with each external diameter of pumping optical fiber 2
The arc groove matched somebody with somebody, each pumping optical fiber 2 is fitted tightly on signal optical fibre 1 in corresponding arc groove respectively to form optical fiber
Beam；Wherein, the axial both ends of each arc groove pass through arcwall face transition；
B, above-mentioned fibre bundle is placed on and drawn on cone machine, draw cone machine to carry out melting drawing to the joint portion of signal optical fibre 1 and pumping optical fiber 2
Stretch, so as to which 6 pumping optical fibers 2 and signal optical fibre 1 are connected to form one；
2）, cut using femto-second laser on one end of each light output of pumping optical fiber 2 and form the angle of wedge 21, then by the oblique of the angle of wedge 21
Face heats the optical surface into total internal reflection.
The above method is melted again after using arc groove, each pumping optical fiber 2 is positioned on the surface of signal optical fibre 1
Cone is drawn, the relative position of each pumping optical fiber 2 and signal optical fibre 1 can keep stable during cone is drawn, and will not produce displacement, because
The quality of this fused biconical taper is higher, more stable；In addition, the position of arc groove can be etched as needed using femto-second laser
And machining accuracy is high, so as to adjust the optical quality of required output light and improve coupling efficiency.
In addition, the pump light in pumping optical fiber 2 enters the bag of signal optical fibre 1 after the reflection of the optical surface of total internal reflection
In layer, pump light hardly projects from end face again, therefore the pump light in each pumping optical fiber 2 almost realizes 100% in flashlight
Coupled in the covering of fibre 1, so as to realize the making of super high power coupler.And pumping laser there's almost no loss,
Therefore the volume of coupler can be reduced without using radiator, so as to realize miniaturization.
Claims (3)
1. a kind of method that femto-second laser auxiliary prepares fiber coupler, it is characterised in that：Methods described specifically includes following
Step：
1）, N roots pumping optical fiber and a signal optical fibre welding form to one, wherein N is the integer more than or equal to 1；
2）, cut using femto-second laser on one end of each pumping optical fiber light output and form the angle of wedge, then the inclined-plane heat by the angle of wedge
It is melt into the optical surface of total internal reflection.
2. the method that a kind of femto-second laser auxiliary according to claim 1 prepares fiber coupler, it is characterised in that：Institute
State step 1）Specific method it is as follows：
A, treat to be etched respectively with femto-second laser on the surface of weld portion in signal optical fibre and be adapted with each pumping optical fiber external diameter
Arc groove, each pumping optical fiber is fitted tightly on signal optical fibre in corresponding arc groove respectively to form fibre bundle；
B, above-mentioned fibre bundle is placed on and drawn on cone machine, draw cone machine to carry out melting drawing to the joint portion of signal optical fibre and pumping optical fiber
Stretch, so as to which N roots pumping optical fiber and signal optical fibre are connected to form one.
3. the method that a kind of femto-second laser auxiliary according to claim 2 prepares fiber coupler, it is characterised in that：Respectively
The axial both ends of arc groove pass through arcwall face transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610853289.0A CN107870391A (en) | 2016-09-27 | 2016-09-27 | A kind of method that femto-second laser auxiliary prepares fiber coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610853289.0A CN107870391A (en) | 2016-09-27 | 2016-09-27 | A kind of method that femto-second laser auxiliary prepares fiber coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107870391A true CN107870391A (en) | 2018-04-03 |
Family
ID=61752359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610853289.0A Pending CN107870391A (en) | 2016-09-27 | 2016-09-27 | A kind of method that femto-second laser auxiliary prepares fiber coupler |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050094952A1 (en) * | 2003-10-29 | 2005-05-05 | Francois Gonthier | Optical coupler comprising multimode fibers and method of making the same |
| US20050207455A1 (en) * | 2003-12-15 | 2005-09-22 | Maccormack Stuart | Method and apparatus for efficient coupling of pump light into fiber amplifiers |
| CN101405635A (en) * | 2006-02-07 | 2009-04-08 | Itf实验室 | Multimode fiber outer cladding coupler for multi-clad fibers |
| CN201417321Y (en) * | 2009-06-05 | 2010-03-03 | 深圳朗光科技有限公司 | Doubly clad optical fiber side pump combiner |
| KR20110062946A (en) * | 2009-12-04 | 2011-06-10 | 한국전자통신연구원 | Laser generator |
| JP2011243672A (en) * | 2010-05-17 | 2011-12-01 | Panasonic Corp | Optical combiner, fiber laser and manufacturing method for optical combiner |
| CN102298173A (en) * | 2011-08-29 | 2011-12-28 | 武汉安扬激光技术有限责任公司 | Lateral pumped fiber structure and manufacturing method thereof |
| CN102730960A (en) * | 2012-06-11 | 2012-10-17 | 烽火通信科技股份有限公司 | Manufacturing method of porous optical fiber preform |
| CN104932057A (en) * | 2015-05-08 | 2015-09-23 | 重庆大学 | In-fiber type optical echo wall micro-cavity structure and manufacturing method thereof |
-
2016
- 2016-09-27 CN CN201610853289.0A patent/CN107870391A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050094952A1 (en) * | 2003-10-29 | 2005-05-05 | Francois Gonthier | Optical coupler comprising multimode fibers and method of making the same |
| US20050207455A1 (en) * | 2003-12-15 | 2005-09-22 | Maccormack Stuart | Method and apparatus for efficient coupling of pump light into fiber amplifiers |
| CN101405635A (en) * | 2006-02-07 | 2009-04-08 | Itf实验室 | Multimode fiber outer cladding coupler for multi-clad fibers |
| CN201417321Y (en) * | 2009-06-05 | 2010-03-03 | 深圳朗光科技有限公司 | Doubly clad optical fiber side pump combiner |
| KR20110062946A (en) * | 2009-12-04 | 2011-06-10 | 한국전자통신연구원 | Laser generator |
| JP2011243672A (en) * | 2010-05-17 | 2011-12-01 | Panasonic Corp | Optical combiner, fiber laser and manufacturing method for optical combiner |
| CN102298173A (en) * | 2011-08-29 | 2011-12-28 | 武汉安扬激光技术有限责任公司 | Lateral pumped fiber structure and manufacturing method thereof |
| CN102730960A (en) * | 2012-06-11 | 2012-10-17 | 烽火通信科技股份有限公司 | Manufacturing method of porous optical fiber preform |
| CN104932057A (en) * | 2015-05-08 | 2015-09-23 | 重庆大学 | In-fiber type optical echo wall micro-cavity structure and manufacturing method thereof |
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Application publication date: 20180403 |