CN107017551A - It is a kind of（2+1）Melt the method for packing of tapered fiber pump combiner in × 1 side - Google Patents
It is a kind of（2+1）Melt the method for packing of tapered fiber pump combiner in × 1 side Download PDFInfo
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- CN107017551A CN107017551A CN201710392135.0A CN201710392135A CN107017551A CN 107017551 A CN107017551 A CN 107017551A CN 201710392135 A CN201710392135 A CN 201710392135A CN 107017551 A CN107017551 A CN 107017551A
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- 239000000835 fiber Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000012856 packing Methods 0.000 title claims abstract description 13
- 239000013307 optical fiber Substances 0.000 claims abstract description 160
- 238000005086 pumping Methods 0.000 claims abstract description 75
- 239000003292 glue Substances 0.000 claims abstract description 25
- 239000000758 substrate Substances 0.000 claims abstract description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 43
- 239000000377 silicon dioxide Substances 0.000 claims description 21
- 230000004927 fusion Effects 0.000 claims description 6
- 230000035515 penetration Effects 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000003628 erosive effect Effects 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 10
- 230000004313 glare Effects 0.000 abstract description 4
- 238000002474 experimental method Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 description 12
- 238000010168 coupling process Methods 0.000 description 12
- 238000005859 coupling reaction Methods 0.000 description 12
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000006854 communication Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 210000000020 growth cone Anatomy 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000009022 nonlinear effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094049—Guiding of the pump light
- H01S3/094053—Fibre coupled pump, e.g. delivering pump light using a fibre or a fibre bundle
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
The invention discloses one kind（2+1）Melt the method for packing of tapered fiber pump combiner in × 1 side, its product prepared includes one piece of substrate, Baltimore groove is provided with the substrate, its trend is provided with a signal optical fibre in Baltimore groove, two pumping optical fibers are equipped with the pumping optical fiber side by side, the pumping optical fiber is connected as one with signal optical fibre by fixture, pumping optical fiber, signal optical fibre are fixed as one by dispensing and Baltimore groove, the welding end of the pumping optical fiber is the conical section after stretching, and the welding section of the conical section and signal optical fibre after signal optical fibre welding has gradient.In the encapsulating structure of the present invention, the veiling glare of temperature rise can be caused by being effectively derived by simple three road glue process, and bundling device temperature rise point is effectively cooled down, so as to avoid the fire damage of pump combiner, experiment proves that the packaged type can realize thousands of watts of pump power tolerance.
Description
Technical field
The present invention relates to optical field, more particularly, to one kind（2+1）Melt the envelope of tapered fiber pump combiner in × 1 side
Dress method.
Background technology
Fiber pump combiner is the core devices of optical fiber laser, is mainly used in entering the LD coupling pump lights with tail optical fiber
Enter in the signal optical fibre that adulterates, so as to produce laser or laser is amplified.At present, most widely used type optical fiber pumping is closed
Beam device is the full fiber type fiber pump combiner based on fused biconical taper technology, and such bundling device can be divided into end pumping type and side
Face-pumping type two types.
Wherein, the principle of end pumping bundling device is by N root pumping optical fibers（Or N root pumping pipelines add a signal optical fibre）
With output signal optical fiber welding after fused biconical taper, so that pump light is injected to realize coupling by the end face of signal optical fibre.And
The principle of profile pump type bundling device is from side coupling by some technological means such as grating, interior lens, V-groove etc. by pump light
Close in entering signal fibre cladding.Compared to face type pump combiner, the advantage of profile pump bundling device is apparent：1）Pump
The coupling of Pu light is no longer limited to two end faces of signal optical fibre, and coupling can be realized in the optional position of signal optical fibre, from
And bigger pumping light power coupling can be further realized, and pump light is in the uniform coupling of whole signal optical fibre, while also subtracting
The pyrocaloric effect produced during small end coupling；2）Because the signal optical fibre of profile pump bundling device is not almost deformed, its
The loss very little of flashlight, therefore, profile pump type optical-fiber bundling device can be used in backward pump formula high-capacity optical fiber laser,
So as to optimize or solve all kinds of problems caused by the nonlinear effect and fuel factor of optical fiber laser.
Although profile pump type optical-fiber bundling device has many advantages, such as, due to the complexity of its technique, its current product is big
It is in the laboratory research stage more, is difficult to find a real ripe profile pump type optical-fiber bundling device product on the market.
Therefore, in the urgent need to a kind of new device or method, to solve the above problems.
The content of the invention
It is an object of the invention to provide one kind（2+1）The method for packing of tapered fiber pump combiner is melted in × 1 side, eliminates
Total reflection of the pump light in pumping optical fiber, so that pumping luminous energy is smoothly coupled into signal optical fibre.
To achieve the above object, the present invention is adopted the following technical scheme that：
It is a kind of（2+1）Melt on tapered fiber pump combiner and its packaging system, including one piece of substrate, the substrate × 1 side
It is provided with Baltimore groove, Baltimore groove to be provided with a signal optical fibre, the pumping optical fiber along its trend and is equipped with two side by side
Pumping optical fiber, the pumping optical fiber is connected as one with signal optical fibre by fixture, and pumping optical fiber, signal optical fibre pass through dispensing
It is fixed as one with Baltimore groove, the welding end of the pumping optical fiber is the conical section after stretching, the conical section and signal optical fibre
The welding section of signal optical fibre has gradient after welding.
In the above-mentioned technical solutions, the pumping optical fiber is divided into three sections, and first paragraph is the naked fibre section for eroding silica clad
For carrying out welding with signal optical fibre, second segment is the silica clad of pumping optical fiber, and the 3rd section is that pumping optical fiber is polymer-coated
Layer.
In the above-mentioned technical solutions, any position on the silica clad by fixture by pumping optical fiber and flashlight
Fibre is fixed.
In the above-mentioned technical solutions, the fixture is heat-shrinkable T bush.
In the above-mentioned technical solutions, the heat-shrinkable T bush shrinks the cone area section start in pumping optical fiber and signal optical fibre.
In the above-mentioned technical solutions, the pumping optical fiber and signal optical fibre have three fixed glue points with Baltimore groove.
In the above-mentioned technical solutions, one of fixed glue point is arranged on the fixedly connected part of pumping optical fiber and signal optical fibre
On, and the silica clad signal optical fibre that a fixed glue point is arranged on pumping optical fiber has the position of overlay, and last is consolidated
Determine glue point to be arranged on single signal optical fibre coat.
In the above-mentioned technical solutions, the substrate is metal substrate.
It is a kind of（2+1）The method for packing of tapered fiber pump combiner is melted in × 1 side, comprises the following steps：
Step one：The overlay of two pumping optical fiber one end is removed, it is small to remove reservation one in the fiber segment of coat in this section
After the complete bare fibre of section, the silica clad of remaining bare fibre is eroded；
Step 2：The bare fibre for eroding silica clad is stretched into growth pyramidal structure；
Step 3：A signal optical fibre is taken, one section of overlay will be got rid of in the middle of signal optical fibre, one section of bare fibre is formed；
Step 4：Two pumping optical fibers for drawing completion Chang Zhui areas are close to be arranged in the same of this segment signal bare optical fiber segment
Side, and pumping optical fiber and signal optical fibre are fixed as one using fixedly connected part；
Step 5：The bare fibre fixed section is heated using oxyhydrogen flame so that pumping optical fiber is micro- to be melted on signal optical fibre；
Step 6, carries out overall micro- drawing by micro- signal optical fibre melted and pumping optical fiber and bores so that pumping optical fiber bores area and signal
Certain fusion penetration is formed between optical fiber；
Step 7：The optical fiber stretched after finishing is put into the Baltimore groove of substrate, and by the dispensing on groove and optical fiber, led to
Cross glue optical fiber is fixed in Baltimore groove, and set lid to complete encapsulation on substrate.
In the above-mentioned technical solutions, the thickness of remaining silica clad is 0 ~ 5um after corroding on the pumping optical fiber.
In the above-mentioned technical solutions, the bare fibre on the pumping optical fiber is magnanimous small more than 15mm, beam waist diameter to stretch
In 40um long wimble structure.
In the above-mentioned technical solutions, the cone section length of the pumping optical fiber is less than the bare fibre length of signal optical fibre.
In the above-mentioned technical solutions, the ratio of the beam waist diameter of the bare fibre and initial diameter is more than 90%.
In the above-mentioned technical solutions, there is the optical fiber in the Baltimore groove glue point at three to be fixed.
In the above-mentioned technical solutions, the glue is ultraviolet high folding glue, and glue is rolled over except the ultraviolet height beyond in fixedly connected part
Position is not filled into signal optical fibre naked fibre just to cover the coat of flashlight naked fibre both sides.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
Remove silica clad pumping optical fiber be drawn growth cone area so that the angle of divergence of pump light cone area's communication process in not
Disconnected increase, when pumping optical fiber from side with signal optical fibre welding after, pump light can quickly be coupled into signal optical fibre from side
In.The fusion penetration of pumping optical fiber and signal optical fibre is bigger, and its overlapping region is bigger, the easier coupling of pump light, therefore, will believe
Number optical fiber and pumping optical fiber carry out overall micro- drawing cone, the fusion penetration between increase pumping optical fiber cone area and signal optical fibre, from
And significantly increase pump coupling efficiency.Fibre-optic waveguide structure in the invention is all optical fibre structure, by direct between optical fiber
Coupling pump light, therefore the high-power pump light of tolerable kilowatt magnitude are realized in welding.In the encapsulating structure of the invention, pass through
Simple three road glue process, which is effectively derived, can cause the veiling glare of temperature rise, and bundling device temperature rise point is effectively cooled down, from
And the fire damage of pump combiner is avoided, experiment proves that the packaged type can realize thousands of watts of pump power tolerance.
Brief description of the drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein：
Fig. 1 is the schematic diagram of the silica clad of HF acid corrosion pumping optical fibers；
Fig. 2 is that pumping optical fiber is corroded one section of silica clad and draws the Chang Zhui areas formed；
Fig. 3 is（2+1）× 1 profile form pump combiner schematic three dimensional views；
Fig. 4 is that the structural representation that area carries out micro- drawing cone comprising signal optical fibre region is bored to pumping optical fiber；
Fig. 5 is（2+1）× 1 side pump bundling device encapsulating structure schematic diagram；
Wherein：1 is signal optical fibre, and 1-1 is overlay, and 1-2 is bare fibre, and 2 be pumping optical fiber, and 2-1 is bare fibre, and 2-2 is stone
English covering, 2-3 is overlay, and 3 be fixedly connected part, and 4 be metal substrate, and 5 be glue.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
Bundling device in the present invention includes a signal optical fibre and two pumping optical fibers, to eliminate pump light in pumping optical fiber
In total reflection so that pumping luminous energy is smoothly coupled into signal optical fibre, the silica clad of two pumping optical fibers needs
The overwhelming majority is eroded by hydrofluoric acid, the 0 ~ 5um only bigger than its silica core of the pumping optical fiber silica clad diameter after corrosion.For example
Shown in Fig. 1, the pumping optical fiber that silica clad has been corroded is drawn into length and is less than 40um's more than 15mm, beam waist diameter
Chang Zhui areas, as shown in Figure 2.One section of coat is got rid of in the centre of signal optical fibre, a segment length is formed long more than pumping optical fiber
The bare fibre in area is bored, then is close to be arranged in this segment signal bare optical fiber segment by two pumping optical fibers for drawing completion Chang Zhui areas
The same side, and by a bit of heat-shrink tube heat shrink in cone area's section start, so that pumping optical fiber Chang Zhui areas is close to be fixed on
In signal optical fibre naked fibre.As shown in Figure 3.Finally, above-mentioned waveguiding structure is placed on oxyhydrogen flame and heated, treat that pumping optical fiber cone area is micro-
It is melted into after signal optical fibre and bores the micro- drawing cone of whole region progress of the area comprising signal optical fibre to pumping optical fiber again so that pumping optical fiber is bored
Certain fusion penetration is formed between area and signal optical fibre, so as to promote coupling of the pump light to signal optical fibre, as shown in Figure 4.
Carry out it is micro- draw after cone technique, signal optical fibre is there is also the cone area of a slope very little, and the ratio of its beam waist diameter and initial diameter is big
In 90%, fusion penetrationdAbout a few micrometers to some tens of pm.
The encapsulating structure of the bundling device of the present invention is as shown in figure 5, will be made（2+1）Melt tapered pumping and close beam in × 1 side
Device waveguiding structure is placed on a metal substrate with groove, is then applied respectively in the two ends signal optical fibre close to signal optical fibre naked fibre
The ultraviolet high folding glue of certain length is irrigated on coating and on heat-shrink tube, so that bundling device is fixed on metallic substrates, and it is logical
Cross ultraviolet height at the three of perfusion and roll over glue by the spuious light-output in bundling device and to because of temperature rise progress caused by absorption veiling glare
Cooling.In order to which effective cooling signal optical fiber coating is to temperature rise caused by the absorption of veiling glare, ultraviolet high folding glue position for dispensing glue
The coat of flashlight naked fibre both sides should just be covered by putting, and is not filled into naked fibre, otherwise can cause a large amount of of pump light
Leakage.
Embodiment：
Pumping optical fiber 220um/242um/0.22, signal optical fibre 20um/400um/0.06/0.46
First, pumping optical fiber is served as with two model 220um/242um/NA0.22 multimode fibre, by the one of pumping optical fiber
End about 12cm coat is got rid of, and the silica clad that then this end is removed to the optical fiber of coat is eroded with hydrofluoric acid solution
It is most of so that the diameter of its silica clad is decreased to 224um, the length that silica clad is corroded about 10cm by 242um；
Then, it is 25mm, beam a segment length to be drawn in the pumping optical fiber naked fibre that silica clad is corroded with optical fiber to draw cone machining
Waist diameter 36um Chang Zhui areas, by the centre of model 20um/400um/0.06/0.46 signal optical fibres about 8cm one section long painting
Coating removes, and exposes the naked fibre of signal optical fibre, and two pumping optical fibers for drawing Hao Changzhui areas are close to be arranged in signal optical fibre
Upside, then passes through pumping optical fiber and signal optical fibre with about 2mm one section long Teflon heat-shrink tube, and pump light is fixed in heating
Xian Zhui areas the initial segment；
Then, pumping optical fiber is entirely bored to area with thermal source to be melted in slightly on signal optical fibre and carry out micro- drawing cone technique so that pump
A segment signal optical fiber one initial diameter of formation that Pu optical taper area is covered is 400um, and beam waist diameter is 385um, bores section length
Yue8mmZhui areas；
Finally, the profile pump bundling device of (2+1) × 1 is packaged, waveguiding structure formed above is suspended vacantly in aluminum
In the groove of substrate, then irrigated respectively on the two ends signal optical fibre coat close to signal optical fibre naked fibre and on heat-shrink tube
The ultraviolet high folding glue of certain length.
The invention is not limited in foregoing embodiment.The present invention, which is expanded to, any in this manual to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (8)
1. it is a kind of（2+1）Melt the method for packing of tapered fiber pump combiner in × 1 side, it is characterised in that comprise the following steps：
Step one：The overlay of two pumping optical fiber one end is removed, it is small to remove reservation one in the fiber segment of coat in this section
After the complete bare fibre of section, the silica clad of remaining bare fibre is eroded；
Step 2：The bare fibre for eroding silica clad is stretched into growth pyramidal structure；
Step 3：A signal optical fibre is taken, one section of overlay will be got rid of in the middle of signal optical fibre, one section of bare fibre is formed；
Step 4：Two pumping optical fibers for drawing completion Chang Zhui areas are close to be arranged in the same of this segment signal bare optical fiber segment
Side, and pumping optical fiber and signal optical fibre are fixed as one using fixedly connected part；
Step 5：The bare fibre fixed section is heated using oxyhydrogen flame so that pumping optical fiber is micro- to be melted on signal optical fibre；
Step 6, carries out overall micro- drawing by micro- signal optical fibre melted and pumping optical fiber and bores so that pumping optical fiber bores area and signal
Certain fusion penetration is formed between optical fiber；
Step 7：The optical fiber stretched after finishing is put into the Baltimore groove of substrate, and by the dispensing on groove and optical fiber, led to
Cross glue optical fiber is fixed in Baltimore groove, and set lid to complete encapsulation on substrate.
2. one kind according to claim 1（2+1）The method for packing of tapered fiber pump combiner is melted in × 1 side, and it is special
The thickness for levying remaining silica clad after being to corrode on the pumping optical fiber is 0 ~ 5um.
3. one kind according to claim 1（2+1）The method for packing of tapered fiber pump combiner is melted in × 1 side, and it is special
It is the magnanimous long wimble structure for being less than 40um more than 15mm, beam waist diameter of stretching to levy the bare fibre being on the pumping optical fiber.
4. one kind according to claim 3（2+1）The method for packing of tapered fiber pump combiner is melted in × 1 side, and it is special
Levy and be that the cone section length of the pumping optical fiber is less than the bare fibre length of signal optical fibre.
5. one kind according to claim 3（2+1）The method for packing of tapered fiber pump combiner is melted in × 1 side, and it is special
The ratio for levying the beam waist diameter for being the bare fibre and initial diameter is more than 90%.
6. one kind according to claim 1（2+1）The method for packing of tapered fiber pump combiner is melted in × 1 side, and it is special
Levying the optical fiber being in the Baltimore groove, there is glue point at three to be fixed.
7. one kind according to claim 6（2+1）The method for packing of tapered fiber pump combiner is melted in × 1 side, and it is special
Levy and be that one of glue point is arranged in the fixedly connected part of pumping optical fiber and signal optical fibre, a fixed glue point is arranged on pump
Silica clad after the fiber optical corrosive of Pu and signal optical fibre have the position of overlay, and last is fixed glue point and is arranged on individually
On signal optical fibre.
8. one kind according to claim 7（2+1）The method for packing of tapered fiber pump combiner is melted in × 1 side, and it is special
Levy and be that the glue is ultraviolet high folding glue, be just to cover flashlight except the ultraviolet high folding glue position beyond in fixedly connected part
The coat of naked fibre both sides, and be not filled into signal optical fibre naked fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710392135.0A CN107017551A (en) | 2017-05-27 | 2017-05-27 | It is a kind of（2+1）Melt the method for packing of tapered fiber pump combiner in × 1 side |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710392135.0A CN107017551A (en) | 2017-05-27 | 2017-05-27 | It is a kind of（2+1）Melt the method for packing of tapered fiber pump combiner in × 1 side |
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| CN107017551A true CN107017551A (en) | 2017-08-04 |
Family
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| CN201710392135.0A Pending CN107017551A (en) | 2017-05-27 | 2017-05-27 | It is a kind of（2+1）Melt the method for packing of tapered fiber pump combiner in × 1 side |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108462028A (en) * | 2018-04-17 | 2018-08-28 | 中国工程物理研究院激光聚变研究中心 | Side pump-type fibre pump signal bundling device and preparation method thereof |
| CN114488400A (en) * | 2022-02-19 | 2022-05-13 | 中红外激光研究院(江苏)有限公司 | High-brightness optical fiber beam combiner based on evanescent wave coupling and preparation method thereof |
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