CN101950050A - Welding method of optical fibers with mismatched waveguide number - Google Patents
Welding method of optical fibers with mismatched waveguide number Download PDFInfo
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- CN101950050A CN101950050A CN 201010252606 CN201010252606A CN101950050A CN 101950050 A CN101950050 A CN 101950050A CN 201010252606 CN201010252606 CN 201010252606 CN 201010252606 A CN201010252606 A CN 201010252606A CN 101950050 A CN101950050 A CN 101950050A
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- leaded light
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- single waveguide
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Abstract
The invention relates to a welding method of optical fibers with mismatched waveguide number, which belongs to the technical fields of optical communication and optical sensing and comprises the following steps of: (1), stripping coatings on one ends of a first and a second single-waveguide optical fibers and inserting parts with coatings stripped into a quartz capillary; (2) heating and melting the middle of the quartz capillary so as to melt and contract the two single-waveguide optical fibers and the quartz capillary into a whole in a heating area; (3), cutting off from the middle of the heating area for exposing waveguide cores of the first and the second single-waveguide optical fibers; and forming a first double-side D type double-waveguide optical fiber on a part with a tail optical fiber; and (4), aligning and welding the first double-side D type double-waveguide optical fiber with a second double-side D type double-waveguide optical fiber made by the prior art through a commercial welder. The double-waveguide optical fibers and the two single-waveguide optical fibers can be welded simultaneously by using the method, and welding loss is less than 0.1dB.
Description
Technical field
The invention belongs to optical communication technique and light field of sensing technologies, be applicable to optical devices such as making coupling mechanism, wave filter.
Background technology
In recent years, research for double wave leaded light fibre has obtained paying close attention to widely, it is a kind of novel special construction optical fiber that comprises the pair of parallel waveguide core, by the double wave leaded light fibre of design different structure parameter, can make the optical device that the single waveguide fiber of many utilizations can't be finished.
For example, the gain balance when utilizing double wave leaded light fibre can realize the amplification of Erbium-Doped Fiber Amplifier multichannel, it is to utilize the amplification of the different next balanced pump lights of the coupling coefficient of light between two waveguide core of different wave length to different wave length laser.In addition, utilize the fine all right fabrication direction coupling mechanism of double wave leaded light, Mach-Zehnder wave filter, wavelength division multiplexer.If two of double wave leaded light fibre or a waveguide core have light sensitive characteristic, just can on this waveguide core, write grating, thereby make the powerful optical fibre device of more complexity, as the Add/drop Voice Channel wave filter.Compare with single waveguide fiber, the double wave leaded light is fine both to have can be used as optical transmission medium owing to have special structure, can construct new unit again, and utilized the fine device architecture of making of double wave leaded light simple, stable performance.In addition, utilize double wave leaded light fibre to make and be used for the stable narrow band filter of fiber laser, variable attenuator and the senior devices such as all-optical switch that utilize the coupling mechanism nonlinear effect in optical fiber communication, especially have wide practical use in all optical communication.
Welding between waveguide number mismatch optical fiber (being the fine and single waveguide fiber of double wave leaded light) is the major reason that restriction is furtherd investigate double wave leaded light fibre always, special construction double wave leaded light fiber device (for example at present, a waveguide core is positioned at the center of optical fiber) solved with the technical matters of a single waveguide fiber welding, but an end of many double wave leaded light fiber devices needs to carry out welding with two single waveguide fibers simultaneously, and these problems fail to be solved always, have therefore limited its commercial application.
Summary of the invention
Technical matters to be solved by this invention be the double wave leaded light fine simultaneously with the welding of two single waveguide fibers, the welding process between a kind of waveguide number mismatch optical fiber is provided.
The technical solution adopted for the present invention to solve the technical problems is:
Welding process between a kind of waveguide number mismatch optical fiber, the method includes the steps of:
Step 4, the middle part heating and melting to the capillary quartz ampoule of step 3 makes first single waveguide fiber in the heating region, the molten integral body that is condensed to of second single waveguide fiber and capillary quartz ampoule;
Step 5 is blocked from the middle part of heating region, exposes the waveguide core of first single waveguide fiber and the waveguide core of second single waveguide fiber, and the fine part of magnetic tape trailer forms the first bilateral D type double wave leaded light fibre;
Step 6, according to document: Peterka, P., et al., Twin-core fiber design andpreparation for easy splicing.Photonics Technology Letters, IEEE, 2000.12 (12): p.1656-1658 make the centre distance between two waveguide core with the first bilateral D type double wave leaded light fibre and equate the second bilateral D type double wave leaded light fibre that cross sectional shape is identical;
Step 7 utilizes commercial heat sealing machine accurately to aim at the first bilateral D type double wave leaded light fibre and the second bilateral D type double wave leaded light fibre, is welded together then.
The commercial heat sealing machine of the described utilization of step 7 is accurately aimed at and is meant that dependence first bilateral D type double wave leaded light fibre and the fine identical cross sectional shape of the second bilateral D type double wave leaded light carry out coarse alignment, then to first single waveguide fiber and the identical laser of second single waveguide fiber difference power input, luminous power to the fine output of the second bilateral D type double wave leaded light is monitored, regulate the relative position of the first bilateral D type double wave leaded light fibre and the second bilateral D type double wave leaded light fibre, make the luminous power of the fine output of the second bilateral D type double wave leaded light that monitors reach maximum, reach accurate aligning this moment.
Technique effect of the present invention:
Utilize the method can realize the fine welding with two single waveguide fibers time of double wave leaded light, and splice loss, splice attenuation is less than 0.1dB.
Description of drawings
Fig. 1 is the schematic cross-section after first single waveguide fiber and second single waveguide fiber are inserted into the capillary quartz ampoule.
Fig. 2 is the fine schematic cross-section of the first bilateral D type double wave leaded light.
Fig. 3 is the fine schematic cross-section of the second bilateral D type double wave leaded light.
Fig. 4 is the fine cross section of first a double wave leaded light pictorial diagram of utilizing this method to make.
Fig. 5 is the fine cross section of second a bilateral D type double wave leaded light pictorial diagram.
Embodiment
Below in conjunction with accompanying drawing welding process of the present invention is described further.
Embodiment one:
Welding process between waveguide number mismatch optical fiber may further comprise the steps:
Step 4 to the middle part heating and melting of the capillary quartz ampoule 3 of step 3, makes first single waveguide fiber 1, the second single waveguide fiber 2 and the capillary quartz ampoule 3 molten integral body that are condensed in the heating region;
Step 5, block from the middle part of heating region, expose the waveguide core of first single waveguide fiber 1 and the waveguide core of second single waveguide fiber 2, as Fig. 2, shown in Figure 4, the centre distance of the waveguide core of the waveguide core of first single waveguide fiber 1 and second single waveguide fiber 2 is reduced into 45 microns herein, and the fine part of magnetic tape trailer forms the first bilateral D type double wave leaded light fibre;
Step 6, according to document: Peterka, P., et al., Twin-core fiber design and preparation for easy splicing.Photonics Technology Letters, IEEE, 2000.12 (12): p.1656-1658. make the fine prefabricated rods of circular double wave leaded light that a double wave is led symmetrical distribution, then both sides grinding of the fine prefabricated rods of circular double wave leaded light or cutting are made into the fine prefabricated rods of bilateral D type double wave leaded light, make centre distance between two waveguide core by drawing process at last and equal 45 microns, the second bilateral D type double wave leaded light fibre identical with the cross sectional shape of the first bilateral D type double wave leaded light fibre, as Fig. 3, shown in 5;
Step 7, utilize commercial heat sealing machine that the first bilateral D type double wave leaded light fibre and the second bilateral D type double wave leaded light fibre are carried out coarse alignment, then to first single waveguide fiber 1 and the identical laser of second single waveguide fiber 2 difference power inputs, luminous power to the fine output of the second bilateral D type double wave leaded light is monitored, regulate the relative position of the first bilateral D type double wave leaded light fibre and the second bilateral D type double wave leaded light fibre, make the luminous power of the fine output of the second bilateral D type double wave leaded light that monitors reach maximum, reach accurate aligning this moment, then the first bilateral D type double wave leaded light fibre and the second bilateral D type double wave leaded light fibre are welded together, finishing a kind of single waveguide fiber and waveguide core distance is the welding of 45 microns double wave leaded light fibre.
Embodiment two:
Welding process between waveguide number mismatch optical fiber may further comprise the steps:
Step 4 to the middle part heating and melting of the capillary quartz ampoule 3 of step 3, makes first single waveguide fiber 1, the second single waveguide fiber 2 and the capillary quartz ampoule 3 molten integral body that are condensed in the heating region;
Step 5, block from the middle part of heating region, expose the waveguide core of first single waveguide fiber 1 and the waveguide core of second single waveguide fiber 2, as Fig. 2, shown in Figure 4, the centre distance of the waveguide core of the waveguide core of first single waveguide fiber 1 and second single waveguide fiber 2 is reduced into 101 microns herein, and the fine part of magnetic tape trailer forms the first bilateral D type double wave leaded light fibre;
Step 6, make the second bilateral D type double wave leaded light fibre that the distance between two multimode waveguide cores equals 101 microns, as Fig. 3, shown in 5, its end surface shape is identical with the first bilateral D type double wave leaded light fibre that step 5 is made, and method for making is identical with embodiment one;
Step 7, according to the commercial heat sealing machine of the alignment so utilization of embodiment one step 7 the first bilateral D type double wave leaded light fibre and the second bilateral D type double wave leaded light fibre are welded together, finishing single waveguide fiber of a kind of multimode and fibre-optic waveguide core distance is the welding of 101 microns double wave leaded light fibre.
Claims (2)
1. the welding process between a waveguide number mismatch optical fiber is characterized in that the method includes the steps of:
Step 1 is got first single waveguide fiber (1) and second single waveguide fiber (2), divests the coat of first single waveguide fiber (1) and second single waveguide fiber (2) one ends respectively;
Step 2, get one section capillary quartz ampoule (3), its length is 2～10 centimetres, and its cross section interior diameter is bigger 1～10 micron than the cross section external diameter sum of first single waveguide fiber (1) and second single waveguide fiber (2), and the cross section overall diameter of capillary quartz ampoule (3) is bigger 1～60 micron than its cross section interior diameter;
Step 3, an end that first single waveguide fiber (1) and second single waveguide fiber (2) is divested coat is inserted in the capillary quartz ampoule (3);
Step 4, the middle part heating and melting to the capillary quartz ampoule (3) of step 3 makes first single waveguide fiber (1) in the heating region, the molten integral body that is condensed to of second single waveguide fiber (2) and capillary quartz ampoule (3);
Step 5 is blocked from the middle part of heating region, exposes the waveguide core of first single waveguide fiber (1) and the waveguide core of second single waveguide fiber (2), and the fine part of magnetic tape trailer forms the first bilateral D type double wave leaded light fibre;
Step 6 selects the centre distance between two waveguide core with the first bilateral D type double wave leaded light fibre to equate the second bilateral D type double wave leaded light fibre that cross sectional shape is identical;
Step 7 utilizes commercial heat sealing machine accurately to aim at the first bilateral D type double wave leaded light fibre and the second bilateral D type double wave leaded light fibre, is welded together then.
2. the welding process between a kind of waveguide number mismatch optical fiber according to claim 1, it is characterized in that, the commercial heat sealing machine of the described utilization of step 7 is accurately aimed at and is meant that dependence first bilateral D type double wave leaded light fibre and the fine identical cross sectional shape of the second bilateral D type double wave leaded light carry out coarse alignment, then to first single waveguide fiber (1) and the identical laser of second single waveguide fiber (2) difference power input, luminous power to the fine output of the second bilateral D type double wave leaded light is monitored, regulate the relative position of the first bilateral D type double wave leaded light fibre and the second bilateral D type double wave leaded light fibre, make the luminous power of the fine output of the second bilateral D type double wave leaded light that monitors reach maximum, reach accurate aligning this moment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010102526066A CN101950050B (en) | 2010-08-13 | 2010-08-13 | Welding method of optical fibers with mismatched waveguide number |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102526066A CN101950050B (en) | 2010-08-13 | 2010-08-13 | Welding method of optical fibers with mismatched waveguide number |
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| CN101950050A true CN101950050A (en) | 2011-01-19 |
| CN101950050B CN101950050B (en) | 2011-11-30 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5129021A (en) * | 1988-07-12 | 1992-07-07 | British Telecommunications Public Limited Company | Optical star couplers |
| CN1090057A (en) * | 1992-12-31 | 1994-07-27 | 康宁股份有限公司 | Achromatic coupler |
| US5339372A (en) * | 1993-06-09 | 1994-08-16 | Corning Incorporated | Low loss coupler |
| CN2630873Y (en) * | 2003-07-15 | 2004-08-04 | 洪祯宏 | Multi-core optical fiber connector |
| US7016573B2 (en) * | 2003-11-13 | 2006-03-21 | Imra America, Inc. | Optical fiber pump multiplexer |
| CN1967302A (en) * | 2006-11-17 | 2007-05-23 | 哈尔滨工程大学 | Single fiber and multi-core fiber coupler and fused biconic taper coupling method thereof |
| CN101647162A (en) * | 2007-04-27 | 2010-02-10 | 株式会社藤仓 | Multi-core fiber for optical pumping device and method of manufacturing the same, optical pumping device, fiber laser, and fiber amplifier |
-
2010
- 2010-08-13 CN CN2010102526066A patent/CN101950050B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5129021A (en) * | 1988-07-12 | 1992-07-07 | British Telecommunications Public Limited Company | Optical star couplers |
| CN1090057A (en) * | 1992-12-31 | 1994-07-27 | 康宁股份有限公司 | Achromatic coupler |
| US5339372A (en) * | 1993-06-09 | 1994-08-16 | Corning Incorporated | Low loss coupler |
| CN2630873Y (en) * | 2003-07-15 | 2004-08-04 | 洪祯宏 | Multi-core optical fiber connector |
| US7016573B2 (en) * | 2003-11-13 | 2006-03-21 | Imra America, Inc. | Optical fiber pump multiplexer |
| CN1967302A (en) * | 2006-11-17 | 2007-05-23 | 哈尔滨工程大学 | Single fiber and multi-core fiber coupler and fused biconic taper coupling method thereof |
| CN101647162A (en) * | 2007-04-27 | 2010-02-10 | 株式会社藤仓 | Multi-core fiber for optical pumping device and method of manufacturing the same, optical pumping device, fiber laser, and fiber amplifier |
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| CN101950050B (en) | 2011-11-30 |
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