CN104656192A - Multimode optical fiber butt fusion method - Google Patents
Multimode optical fiber butt fusion method Download PDFInfo
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- CN104656192A CN104656192A CN201310589092.7A CN201310589092A CN104656192A CN 104656192 A CN104656192 A CN 104656192A CN 201310589092 A CN201310589092 A CN 201310589092A CN 104656192 A CN104656192 A CN 104656192A
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- optical fiber
- multimode
- cone
- welding
- welding process
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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
- G02B6/2551—Splicing of light guides, e.g. by fusion or bonding using thermal methods, e.g. fusion welding by arc discharge, laser beam, plasma torch
-
- 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
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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 relates to a multimode optical fiber butt fusion method, and belongs to the technical field of optical fibers. The method comprises the following steps: tapering one end of a second optical fiber to form a tapered region with the same diameter as that of a first optical fiber; carrying out butt fusion on the tapered region and the first optical fiber to conveniently realize butt fusion between two optical fibers with a great difference between fiber cores. Therefore, the butt fusion loss can be reduced as much as possible, and the performance index can meet the requirement; meanwhile, the multimode optical fiber butt fusion method is quite low in realizing cost and is particularly suitable for butt fusion between a pump with non-matched optical fibers and a beam combiner.
Description
Technical field
The present invention relates to technical field of optical fiber, particularly optical fiber splicing method technical field, specifically refer to a kind of multimode optical fiber welding process.
Background technology
Make at fiber laser and fiber amplifier light path or in relevant light path experimentation, often need the welding problem processing different core optical fibers.If directly welding by force, splice loss, splice attenuation generally all can be very large, thus affect the making of light path and the result of experiment.Two kinds of fibre core differences are not very large fused fiber splices, and common disposal route is that the parameter (such as weld time, strength of discharge etc.) by adjusting heat sealing machine reaches the object reducing splice loss, splice attenuation.But for the fused fiber splice that two kinds of fibre cores differ greatly, only regulate the parameter of heat sealing machine, be difficult to reach the object reducing splice loss, splice attenuation.
In high-capacity optical fiber laser and fiber amplifier, the pumping of employing multimode adds the scheme that doubly clad optical fiber carries out amplifying usually.By the impact of the nonlinear effect of Active Optical Fiber own, when pump power rises to certain value, light path inside will produce stimulated Brillouin scattering (SBS), thus causes the damage of light path.Therefore, how improving the threshold power of amplifier SBS, is make one of problem that high-capacity optical fiber laser and fiber amplifier must solve.Conventional method is the Active Optical Fiber of the large core diameter that employing SBS threshold power is higher.Correspondingly, in order to mate, bundling device also needs to adopt the passive fiber of large core diameter to make, and such bundling device, pumping input arm adopts MM200/2400.22A optical fiber usually.And the output tail optical fiber of multimode pumping is generally MM105/1250.15A, if adopt existing welding mode, because not mating thus causing splice loss, splice attenuation to increase of optical fiber between pumping with bundling device, efficiency can be caused to reduce on the one hand, also easily cause burning of this fusion point simultaneously.In order to address this problem, the optical fiber matched with the pumping input arm of bundling device can be used to go to customize multimode pumping, to reduce splice loss, splice attenuation.But the unfavorable factor done like this is: the customization pumping process-cycle is long, and cost is high, and properties and specifications all not easily reaches the set goal.
Summary of the invention
The object of the invention is to overcome above-mentioned shortcoming of the prior art, a kind of welding that can realize easily between optical fiber that two kinds of fibre cores differ greatly is provided, reduce splice loss, splice attenuation, and realize with low cost, performance index can meet the demands, and are specially adapted to the welding between unmatched for optical fiber pumping and bundling device.
In order to realize above-mentioned object, multimode optical fiber welding process of the present invention comprises the following steps:
(1) diameter of the first optical fiber is measured;
(2) draw cone to one end of the second optical fiber, form cone district, the diameter in described cone district is identical with the first described optical fiber;
(3) the cone district described in cutting and the first described optical fiber;
(4) by the cone district welding of the first described optical fiber and the second described optical fiber.
In this multimode optical fiber welding process, the first described optical fiber is that multimode pumping exports tail optical fiber, and the second described optical fiber is bundling device pumping input arm.
In this multimode optical fiber welding process, the cladding diameter that described multimode pumping exports tail optical fiber is 125 μm.
In this multimode optical fiber welding process, described method is further comprising the steps of before step (1):
(0) output power of the multimode pumping described in test.
In this multimode optical fiber welding process, described method is further comprising the steps of after step (4):
(5) test the bundling device output power after welding, calculate splice loss, splice attenuation.
In this multimode optical fiber welding process, described draws cone to one end of the second optical fiber, forms cone district, is specially: utilize the first heat sealing machine one end to the second optical fiber to draw cone, forms cone district.
In this multimode optical fiber welding process, by the cone district welding of the first described optical fiber and the second described optical fiber, be specially: utilize the second heat sealing machine by the cone district welding of the first described optical fiber and the second described optical fiber.
Have employed the multimode optical fiber welding process of this invention, because one end of the second optical fiber first carries out drawing cone by it, form the cone district identical with the first fibre diameter, Zai Jiangzhui district and the first fused fiber splice, thus the welding that can realize easily between optical fiber that two kinds of fibre cores differ greatly, reduce splice loss, splice attenuation as much as possible, and performance index can meet the demands, simultaneously to realize cost quite cheap for multimode optical fiber welding process of the present invention, is specially adapted to the welding between unmatched for optical fiber pumping and bundling device.
Accompanying drawing explanation
Fig. 1 is the flow chart of steps of multimode optical fiber welding process of the present invention.
Fig. 2 is the structural drawing of the high-power fiber amplifier utilizing multimode optical fiber welding process of the present invention to manufacture.
Embodiment
In order to more clearly understand technology contents of the present invention, describe in detail especially exemplified by following examples.
Referring to shown in Fig. 1, is the flow chart of steps of multimode optical fiber welding process of the present invention.
In one embodiment, this multimode optical fiber welding process comprises the following steps:
(1) diameter of the first optical fiber is measured;
(2) draw cone to one end of the second optical fiber, form cone district, the diameter in described cone district is identical with the first described optical fiber;
(3) the cone district described in cutting and the first described optical fiber;
(4) by the cone district welding of the first described optical fiber and the second described optical fiber.
In one more preferably embodiment, the first described optical fiber is that multimode pumping exports tail optical fiber, and the second described optical fiber is bundling device pumping input arm.The cladding diameter that described multimode pumping exports tail optical fiber is 125 μm.
In a kind of further preferred embodiment, described method is further comprising the steps of before step (1):
(0) output power of the multimode pumping described in test.
Described method is further comprising the steps of after step (4):
(5) test the bundling device output power after welding, calculate splice loss, splice attenuation.
In preferred embodiment, described in step (2), cone is drawn to one end of the second optical fiber, form cone district, be specially: utilize the first heat sealing machine one end to the second optical fiber to draw cone, form cone district.In step (4) by the cone district welding of the first described optical fiber and the second described optical fiber, be specially: utilize the second heat sealing machine by the cone district welding of the first described optical fiber and the second described optical fiber.
In actual applications, as shown in Figure 2, method of the present invention can adopt following steps to the structure of the high-power fiber amplifier utilizing multimode optical fiber welding process of the present invention to manufacture:
1, first test the output power of multimode pumping source, it exports tail optical fiber is MM-105/125-0.15A.
2, by Vytran GPX3400 type heat sealing machine, cone process is drawn to bundling device pumping input arm, become by MM-200/240-0.22A fibre-optical drawing covering to be the optical fiber of 125 μm.
3, by the cutter of Vytran, will draw the optical fiber of having bored, at cone, district cuts flat.
4, the tail optical fiber of the multimode pumping source of MM-105/125-0.15A is cut.
5, two kinds of optical fiber are passed through Teng storehouse 60S type heat sealing machine, use MM AUTO program to carry out welding.
6, testing the power after welding, calculate insertion loss, is probably about 0.1dB.
Method of the present invention is adopted in high-power fiber amplifier manufacture, efficiently solve because multimode pumping exports tail optical fiber and the different of bundling device pumping input arm optical fiber that splice loss, splice attenuation that is that cause is excessive, the problem that light path work efficiency reduces, improve stability and the security of light path work, avoid the waste of cost, there is very high practical value.
Have employed the multimode optical fiber welding process of this invention, because one end of the second optical fiber first carries out drawing cone by it, form the cone district identical with the first fibre diameter, Zai Jiangzhui district and the first fused fiber splice, thus the welding that can realize easily between optical fiber that two kinds of fibre cores differ greatly, reduce splice loss, splice attenuation as much as possible, and performance index can meet the demands, simultaneously to realize cost quite cheap for multimode optical fiber welding process of the present invention, is specially adapted to the welding between unmatched for optical fiber pumping and bundling device.
In this description, the present invention is described with reference to its specific embodiment.But, still can make various amendment and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, instructions and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (7)
1. a multimode optical fiber welding process, is characterized in that, described method comprises the following steps:
(1) diameter of the first optical fiber is measured;
(2) draw cone to one end of the second optical fiber, form cone district, the diameter in described cone district is identical with the first described optical fiber;
(3) the cone district described in cutting and the first described optical fiber;
(4) by the cone district welding of the first described optical fiber and the second described optical fiber.
2. multimode optical fiber welding process according to claim 1, is characterized in that, the first described optical fiber is that multimode pumping exports tail optical fiber, and the second described optical fiber is bundling device pumping input arm.
3. multimode optical fiber welding process according to claim 2, is characterized in that, the cladding diameter that described multimode pumping exports tail optical fiber is 125 μm.
4. multimode optical fiber welding process according to claim 2, is characterized in that, described method is further comprising the steps of before step (1):
(0) output power of the multimode pumping described in test.
5. multimode optical fiber welding process according to claim 2, is characterized in that, described method is further comprising the steps of after step (4):
(5) test the bundling device output power after welding, calculate splice loss, splice attenuation.
6. multimode optical fiber welding process according to any one of claim 1 to 5, is characterized in that, described draws cone to one end of the second optical fiber, forms cone district, is specially:
Utilize the first heat sealing machine one end to the second optical fiber to draw cone, form cone district.
7. multimode optical fiber welding process according to claim 6, is characterized in that, by the cone district welding of the first described optical fiber and the second described optical fiber, is specially:
Utilize the second heat sealing machine by the cone district welding of the first described optical fiber and the second described optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310589092.7A CN104656192A (en) | 2013-11-21 | 2013-11-21 | Multimode optical fiber butt fusion method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310589092.7A CN104656192A (en) | 2013-11-21 | 2013-11-21 | Multimode optical fiber butt fusion method |
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| CN104656192A true CN104656192A (en) | 2015-05-27 |
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| CN201310589092.7A Pending CN104656192A (en) | 2013-11-21 | 2013-11-21 | Multimode optical fiber butt fusion method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324756A (en) * | 2016-11-18 | 2017-01-11 | 中国联合网络通信集团有限公司 | Optical fiber splicing method and device |
| CN108333685A (en) * | 2018-02-24 | 2018-07-27 | 长飞光纤光缆股份有限公司 | A kind of welding process of single mode optical fiber and multimode fibre |
| CN108469652A (en) * | 2018-04-03 | 2018-08-31 | 长飞光纤光缆股份有限公司 | A kind of optical mode adapter and preparation method thereof |
| CN110501782A (en) * | 2019-07-27 | 2019-11-26 | 复旦大学 | A kind of low-loss of large mode area pcf, high-intensitive welding process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062901A (en) * | 2010-11-30 | 2011-05-18 | 中国人民解放军国防科学技术大学 | Method for welding doubly clad optical fiber and photonic crystal fiber |
| CN102866462A (en) * | 2012-08-31 | 2013-01-09 | 董浩 | Optical fiber mode field adapter capable of realizing low-loss conversion of diameter of LP01 mode field |
| CN202975389U (en) * | 2012-11-10 | 2013-06-05 | 广东汉唐量子光电科技有限公司 | High power optical fiber output head |
-
2013
- 2013-11-21 CN CN201310589092.7A patent/CN104656192A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062901A (en) * | 2010-11-30 | 2011-05-18 | 中国人民解放军国防科学技术大学 | Method for welding doubly clad optical fiber and photonic crystal fiber |
| CN102866462A (en) * | 2012-08-31 | 2013-01-09 | 董浩 | Optical fiber mode field adapter capable of realizing low-loss conversion of diameter of LP01 mode field |
| CN202975389U (en) * | 2012-11-10 | 2013-06-05 | 广东汉唐量子光电科技有限公司 | High power optical fiber output head |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324756A (en) * | 2016-11-18 | 2017-01-11 | 中国联合网络通信集团有限公司 | Optical fiber splicing method and device |
| CN108333685A (en) * | 2018-02-24 | 2018-07-27 | 长飞光纤光缆股份有限公司 | A kind of welding process of single mode optical fiber and multimode fibre |
| CN108469652A (en) * | 2018-04-03 | 2018-08-31 | 长飞光纤光缆股份有限公司 | A kind of optical mode adapter and preparation method thereof |
| CN108469652B (en) * | 2018-04-03 | 2020-09-01 | 长飞光纤光缆股份有限公司 | Optical mode adapter and preparation method thereof |
| CN110501782A (en) * | 2019-07-27 | 2019-11-26 | 复旦大学 | A kind of low-loss of large mode area pcf, high-intensitive welding process |
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Application publication date: 20150527 |
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