CN102354024B - Optical fiber splicing method - Google Patents
Optical fiber splicing method Download PDFInfo
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- CN102354024B CN102354024B CN 201110185695 CN201110185695A CN102354024B CN 102354024 B CN102354024 B CN 102354024B CN 201110185695 CN201110185695 CN 201110185695 CN 201110185695 A CN201110185695 A CN 201110185695A CN 102354024 B CN102354024 B CN 102354024B
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- cooling fluid
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- sleeve pipe
- circulating cooling
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Abstract
The invention discloses an optical fiber splicing method, which comprises the following steps of: putting optical fibers with different melting temperatures and the same mode field diameter between a pair of body heating sources, sleeving a heat resistance sleeve with a rectangular section on the outer side of the optical fiber at low melting temperature, feeding circulation cooling fluid into the heat resistance sleeve and then splicing; and putting optical fibers with different melting temperatures and different mode field diameters between the pair of body heating sources, sleeving the heat resistance sleeve with the rectangular section on the outer side of the optical fiber at the low melting temperature and sleeving a heat resistance sleeve with a wedged section on the outer side of the optical fiber with the small mode field diameter, feeding circulation cooling fluid into the heat resistance sleeves and then splicing. By the method, optical fibers with large melting temperature differences and large mode field diameter differences can be connected with one another efficiently.
Description
Technical field
The present invention relates to the optical fiber splicing method field, specifically a kind of optical fiber splicing method.
Background technology
Traditional optical fiber communication and optical fibre device are mainly realized by rear-earth-doped quartz glass optical fiber, between quartz glass optical fiber owing to having similar optical characteristics and thermodynamic behaviour, the common symmetrical type of heating of general employing can be realized low loss welding, and the fusion techniques between quartz glass optical fiber is also comparatively ripe.Yet quartz glass optical fiber causes its rear-earth-doped content lower due to its intrinsic design feature, and this has seriously limited gain coefficient of quartz glass optical fiber etc.Therefore, the multicomponent glass optical fiber with high rear-earth-doped ability, excellent performance has great importance for the development of all-optical network of future generation, optical fiber sensing system and Internet of Things! Yet, be faced with again a new problem with multicomponent glass optical fiber as the development of the novel optical fiber device of medium---how to realize the welding between multicomponent glass optical fiber and conventional quartz glass optical fiber, two kinds of high-quality being welded together of glass optical fiber that will have not isotype field, different melt temperature, different optical characteristic and thermodynamic behaviour, need to when fused fiber splice, realize simultaneously suitable temperature field intensity, gradient and distribution in the both sides of fusion point.Sweden Ellison Telephone Co., Ltd (ZL 200480026815.1) once proposed in 2004 by taking warm image to capture thermo-optical and launch and to determine to heat the arc center position during pre-fusion process, the control temperature field distributes, and has realized having the welding of adaptive mode field diameter optical fiber.Corning Incorporateds etc. also once utilized the mode of asymmetric heating to realize welding between different melt temperature glass optical fibers.Yet, be simultaneously temperature field intensity, gradient and the distribution of heating region regulated and controled, realize simultaneously the welding of different melt temperatures, different mode field diameter optical fiber, also have sizable difficulty! In addition, than the mode an of heating source (as LASER HEATING etc.), body heating source (as resistance board heating etc.) has more uniform heating-up temperature field, is more applicable for the welding that has between thicker diameter and abnormally-structured optical fiber.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of optical fiber splicing method is provided, the present invention utilize the shape of regulating thermal resistance sleeve pipe section and in the thermal resistance coefficient of the circulating fluid that passes into, effectively realize the welding between different thermal characteristics and mode field diameter optical fiber.
The present invention realizes that the technical scheme that purpose adopts is:
A kind of optical fiber splicing method comprises: the optical fiber of different melt temperatures, identical mode field diameter is placed between a pair of body heating source, and puts the thermal resistance sleeve pipe of rectangular cross section in the low melting glass outer fiber, and pass into circulating cooling fluid, then carry out welding; The optical fiber of different melt temperatures, different mode field diameters is placed between a pair of body heating source, not only put the thermal resistance sleeve pipe of rectangular cross section in the low melting glass outer fiber, and put the thermal resistance sleeve pipe of wedge section in the little outer fiber of mode field diameter, all pass into circulating cooling fluid in sleeve pipe, then carry out welding.
Described circulating cooling fluid comprises that the room temperature coefficient of heat conductivity is that the water of 0.62 W/mK or mass percent that the room temperature coefficient of heat conductivity is 0.55 W/mK are 30% calcium chloride brine, atmospheric argon gas and nitrogen.
When described circulating cooling fluid was liquid, its flow rate was 0.01 ~ 5 m/s.
When described circulating cooling fluid was gas, its flow rate was 0.01 ~ 10 m/s.
Compared with prior art, the present invention has following advantage and beneficial effect:
Advantage of the present invention is, the different melt temperatures that the classic method of welding simultaneously can not welding, the optical fiber of different mode field diameters.Shape by regulating thermal resistance sleeve pipe section and in the thermal resistance coefficient of the circulating fluid that passes into, can in very large range regulate temperature field intensity and gradient and distribute, realize the permanent welding of low-loss of the optical fiber of different melt temperatures, different mode field diameters.
Description of drawings
Fig. 1 is the welding schematic diagram of the different melt temperatures of the present invention, identical mode field diameter optical fiber;
Fig. 2 is the mode that the passes into schematic diagram of circulating cooling fluid of the present invention;
Fig. 3 is the welding schematic diagram of the different melt temperatures of the present invention, different mode field diameter optical fiber;
Fig. 4 is the welding schematic diagram of the different melt temperatures of the present invention, different mode field diameter optical fiber.
Embodiment
Below in conjunction with specific embodiment, the present invention is done further concrete detailed description the in detail, but embodiments of the present invention are not limited to this, the technological parameter for not indicating especially can carry out with reference to routine techniques.
(softening point is as 450～700 take low melting glass phosphate glass optical fiber
oC) and high melting temperature standard quartz glass optical fiber (softening point is 1600～1750
oC) welding between is example.
As shown in Figure 1, phosphate glass optical fiber 1 and the silica fibre 2 that divests coat carefully are positioned in the V-type groove of heat sealing machine, regulate the position of two optical fiber, make two profile of optic fibre symmetries be positioned over symmetrical heating source 12 centers.when phosphate glass optical fiber mode fields 3 with silica fibre mould field 4 diameters that divest coat when identical, a section is the thermal resistance sleeve pipe 5 of rectangle on phosphate glass optical fiber 1 outer race, passing into circulating cooling fluid-room temperature coefficient of heat conductivity in this rectangular resistance thermal sleeve 5 is the water of 0.62 W/mK, the temperature field is adjusted to is fit to silica fibre 2 thermal characteristics, make phosphate glass optical fiber 1 one temperature fields, territory, lateral areas and its thermal characteristic coupling, like this, silica fibre 2 is in the high-temperature region, 1 of phosphate glass optical fiber is in low-temperature space, two optical fiber all are in molten condition, after fixture 6 mobile devices advance, well be welded together.
Thermal resistance sleeve pipe 5 adopts the mode that passes into circulating cooling fluid to carry out thermal resistance, and the mode that passes into of circulating cooling fluid is flow to by import 7 as shown in Figure 2, then is flowed out by outlet 8 circulations.
as shown in Figure 3, when phosphate glass optical fiber mode fields 9 diameters during less than quartz glass optical fiber mould field 10 diameter, a section is the thermal resistance sleeve pipe 11 of wedge shape on phosphate glass optical fiber 1 outer race, the temperature field is adjusted to the thermal characteristic that is fit to silica fibre 2, the mass percent that passes into the room temperature coefficient of heat conductivity in wedge shape thermal resistance sleeve pipe 11 and be 0.55 W/mK is 30% calcium chloride brine, make phosphate glass optical fiber 1 one temperature fields, territory, lateral areas and its thermal characteristic coupling, utilize simultaneously the wedge section of wedge shape thermal resistance sleeve pipe 11, form suitable temperature gradient field in phosphate glass optical fiber 1 one sides, this temperature gradient field can play the effect that enlarges phosphate glass optical fiber mode fields 9 diameters, make phosphate glass optical fiber 1 one sides have suitable temperature field and gradient fields distribution, realize the welding between little mode field diameter phosphate glass optical fiber and large mode field diameter silica fibre.
As shown in Figure 4, when phosphate glass optical fiber mode fields 9 diameters during greater than quartz glass optical fiber mould field 10 diameter, a section is 5 whiles of thermal resistance sleeve pipe of rectangle on phosphate glass optical fiber 1 outer race, a section is the thermal resistance sleeve pipe 11 of wedge shape on quartz glass optical fiber 2 outer race, pass into circulating cooling fluid-one an atmospheric argon gas in two kinds of sleeve pipes, make phosphate glass optical fiber 1 one territories, lateral areas have suitable low temperature field intensity; And make quartz glass optical fiber 1 one sides have suitable temperature field and gradient fields distribution, thereby realize the welding between large mode field diameter phosphate glass optical fiber and little mode field diameter silica fibre.
Above-described embodiment is the better embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, within being included in protection scope of the present invention.
Claims (4)
1. optical fiber splicing method, it is characterized in that, comprise: the optical fiber of different melt temperatures, identical mode field diameter is placed between a pair of body heating source, and be heated in the low melting glass outer fiber thermal resistance sleeve pipe that part puts rectangular cross section, and pass into circulating cooling fluid in the thermal resistance sleeve pipe of rectangular cross section, then carry out welding; The optical fiber of different melt temperatures, different mode field diameters is placed between a pair of body heating source, not only put the thermal resistance sleeve pipe of rectangular cross section in the low melting glass outer fiber, and be heated in the little outer fiber of mode field diameter the thermal resistance sleeve pipe that part puts wedge section, wedge shaped tip is towards fusion point, all pass into circulating cooling fluid in sleeve pipe, then carry out welding.
2. method according to claim 1, it is characterized in that, described circulating cooling fluid comprises that the room temperature coefficient of heat conductivity is that the water of 0.62 W/mK or mass percent that the room temperature coefficient of heat conductivity is 0.55 W/mK are 30% calcium chloride brine, or the mixed gas that consists of of atmospheric argon gas and nitrogen.
3. method according to claim 1, is characterized in that, when described circulating cooling fluid was liquid, its flow rate was 0.01 ~ 5 m/s.
4. method according to claim 1, is characterized in that, when described circulating cooling fluid was gas, its flow rate was 0.01 ~ 10 m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110185695 CN102354024B (en) | 2011-07-05 | 2011-07-05 | Optical fiber splicing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110185695 CN102354024B (en) | 2011-07-05 | 2011-07-05 | Optical fiber splicing method |
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| CN102354024A CN102354024A (en) | 2012-02-15 |
| CN102354024B true CN102354024B (en) | 2013-06-12 |
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| CN 201110185695 Active CN102354024B (en) | 2011-07-05 | 2011-07-05 | Optical fiber splicing method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103885128A (en) * | 2013-12-27 | 2014-06-25 | 广东省广播电视网络股份有限公司 | Tail fiber joint used for fiber-to-the-home and protective method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5570446A (en) * | 1994-06-16 | 1996-10-29 | Telefoanaktiebolaget Lm Ericsson | Alignment and control in splicing optical fibers |
| CN1409140A (en) * | 2001-09-25 | 2003-04-09 | 住友电气工业株式会社 | Method and device for heating welding parts of thermal optical fiber and optical fiber array |
| CN101183161A (en) * | 2007-12-07 | 2008-05-21 | 华南理工大学 | Welding joint method of glass optical fibre with different component |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2618544B2 (en) * | 1991-06-06 | 1997-06-11 | 株式会社フジクラ | Optical fiber connection method |
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2011
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5570446A (en) * | 1994-06-16 | 1996-10-29 | Telefoanaktiebolaget Lm Ericsson | Alignment and control in splicing optical fibers |
| CN1409140A (en) * | 2001-09-25 | 2003-04-09 | 住友电气工业株式会社 | Method and device for heating welding parts of thermal optical fiber and optical fiber array |
| CN101183161A (en) * | 2007-12-07 | 2008-05-21 | 华南理工大学 | Welding joint method of glass optical fibre with different component |
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| CN102354024A (en) | 2012-02-15 |
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Effective date of registration: 20190114 Address after: 519030 Room 105-24877, No. 6 Baohua Road, Hengqin New District, Zhuhai City, Guangdong Province Patentee after: Hengqin Donghui Technology Co., Ltd. Address before: 510640 No. five, 381 mountain road, Guangzhou, Guangdong, Tianhe District Patentee before: South China University of Technology |