CN103030270A - Method for making bow-shaped polarization maintaining optical fiber for Y waveguide - Google Patents
Method for making bow-shaped polarization maintaining optical fiber for Y waveguide Download PDFInfo
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- CN103030270A CN103030270A CN2013100033392A CN201310003339A CN103030270A CN 103030270 A CN103030270 A CN 103030270A CN 2013100033392 A CN2013100033392 A CN 2013100033392A CN 201310003339 A CN201310003339 A CN 201310003339A CN 103030270 A CN103030270 A CN 103030270A
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- Prior art keywords
- polarization maintaining
- maintaining optical
- optical fiber
- optical fibre
- bow
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
- C03B37/01807—Reactant delivery systems, e.g. reactant deposition burners
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/30—Polarisation maintaining [PM], i.e. birefringent products, e.g. with elliptical core, by use of stress rods, "PANDA" type fibres
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The invention belongs to a method for making a polarization maintaining optical fiber and particularly relates to a method for making a bow-shaped polarization maintaining optical fiber for a Y waveguide. A polarization maintaining optical fiber is made through adopting a modified chemical vapor deposition (MCVD) method and then drawn into the polarization maintaining optical fiber by a drawing tower. The method provided by the invention sequentially comprises the following steps of: 1, connecting a liner tube, a guide tube and a tail tube; 2, depositing an outer skin layer; 3, depositing a stress layer; 4, etching the stress layer; 5, depositing an inner skin layer; 6, depositing a core layer; and 7 enabling the perform to shrink. The method has the advantages of one-step molding and simple technology. Besides, all processes are carried out in an airtight environment and are free from external interference, and the optical fiber has excellent strength. Through the adjusting optimization of the ratio of deposited materials in a stress zone, the bow-shaped polarization maintaining optical fiber for the Y waveguide is obtained, and the requirement of a technology for making the Y waveguide is met.
Description
Technical field
The present invention relates to a kind of Y waveguide with the manufacture method of bow-tie type polarization maintaining optical fibre, use this manufacture method and can obtain Y waveguide bow-tie type polarization maintaining optical fibre, have advantages of that manufacture craft is simple, fiber strength is high, polarization property is stable.The present invention can be used for making the polarization maintaining optical fibre that works in various wavelength.
Background technology
Polarization maintaining optical fibre has very strong polarization hold facility for line polarized light, is mainly used in the measurement of polarized light interference type angular turn, and its typically used is for the manufacture of in fiber optic gyro, fibre optic hydrophone and the coherent optical communication system.And Y waveguide also belongs to a class of polarization maintaining optical fibre with bow-tie type bow-tie type polarization maintaining optical fibre, is mainly used in the making of optical fiber Y waveguide.
At present, polarization maintaining optical fibre commonly used is divided into panda type, bow-tie type and ellipse according to the difference of stressed zone, but no matter be panda type, bow-tie type or ellipse polarization maintaining optical fibre, a large amount of boron oxide owing to having mixed in its stressed zone, cause the stressed zone to have very large thermal expansivity, when carrying out grinding and polishing, very easily burst.Therefore purpose of the present invention just is to overcome the deficiency that exists in the above technology, and a kind of stressed zone boron-doping relative concentration is lower, thermal expansivity is relatively low and have the processing method of the polarization maintaining optical fibre of polarization hold facility and provide.
Summary of the invention
The present invention mainly solve conventional polarization maintaining optical fibre at Y waveguide with the problem that bursts in using, the manufacture method of a kind of oval stressed zone type polarization maintaining optical fibre is provided.
The present invention mainly may further comprise the steps:
1, adopt chemical vapor deposition method to deposit respectively exodermis, the stressor layers of prefabricated rods, the material amount is low with respect to common polarization maintaining optical fibre material amount during the deposition stressor layers, and germanium, boron are than larger than traditional polarization maintaining optical fibre;
2, deposited stressor layers after, utilize etching lamp counter stress layer to carry out etching, stressor layers disconnects and to get final product;
3, with behind the bushing pipe Rotate 180 °, carrying out etching, this direction stressor layers is being carved open;
4, then deposit endodermis, sandwich layer;
5, after all structures have deposited, carry out the operations such as forward is collapsed, oppositely collapsed, polishing and make polarization-preserving fiber preform;
6, the polarization maintaining optical fibre that on wire-drawer-tower, is 80 μ m with its drawing optic fibre diameter.
The advantage that the present invention has is:
1, once shaped, without external environmental interference, physical strength is good;
2, fiber stress district thermal expansivity less can not burst during grinding and polishing;
3, the optical fiber structure symmetry is good, and polarization property is stable.
Description of drawings
Fig. 1 bow-tie type polarization maintaining optical fibre structure diagram
Fig. 2 bow-tie type polarization-preserving fiber preform fabrication processing
Reference numeral:
Fibre core 1, endodermis 2, stressor layers 3, exodermis 4.
Embodiment
The invention provides a kind of Y waveguide with the manufacture method of bow-tie type polarization maintaining optical fibre, below in conjunction with accompanying drawing and embodiment, the present invention is further elaborated.Specific embodiment described herein only in order to explain the present invention, does not limit the present invention.
The embodiment of the invention relates to the manufacture method that a kind of Y waveguide is used the bow-tie type polarization maintaining optical fibre, may further comprise the steps:
(1) on lathe, skirt is connected with bushing pipe with tail pipe, and bushing pipe is carried out the pre-treatment polishing;
(2) adopt chemical vapor deposition method to deposit respectively exodermis, the stressor layers of prefabricated rods, the material amount is low with respect to common polarization maintaining optical fibre material amount during the deposition stressor layers, and germanium, boron are than larger than traditional polarization maintaining optical fibre;
(3) deposited stressor layers after, utilize etching lamp counter stress layer to carry out etching, stressor layers disconnects and to get final product;
(4) with behind the bushing pipe Rotate 180 °, carrying out etching, this direction stressor layers is being carved open;
(5) then deposit endodermis, sandwich layer;
(6) after all structures have deposited, carry out the operations such as forward is collapsed, oppositely collapsed, polishing and make polarization-preserving fiber preform;
(7) polarization maintaining optical fibre that is 80 μ m with its drawing optic fibre diameter on wire-drawer-tower, 1980 ± 50 ℃ of wire-drawing temperatures, optical fiber external diameter are 80 ± 1 μ m, and drawing tensile force is 45 ± 5g, and drawing speed is 80 ± 10m/min.
Below, describe with two specific exampless:
Embodiment 1:
(1) carries out as shown in Figure 2 the pre-treatment of bushing pipe at the MCVD lathe;
(2) adopt the operations such as MCVD process deposits exodermis, deposition stressor layers, etching stressor layers, deposition endodermis, deposition sandwich layer, forward are collapsed, oppositely collapsed, polishing to make the bow-tie type polarization-preserving fiber preform, the optical fiber prefabricating rod outside diameter is 11.2mm, wherein germanium, boron are than being 6:1, and total amount germanium, boron total amount will be 50% of traditional polarization maintaining optical fibre material amount;
(3) then polarization-preserving fiber preform is pulled into the polarization maintaining optical fibre that diameter is 80.5 μ m at wire-drawer-tower; wire-drawing temperature is 1985 ℃; drawing tensile force is 45g; drawing speed of optical fiber is 85m/min; and optical fiber surface coat two-layer photo-cured coating with the protection optical fiber, finally make the polarization maintaining optical fibre that the optical fiber coating diameter is 173 μ m, the stressed zone is refracted as-7.0 ‰; simultaneously, the optics of prepared polarization maintaining optical fibre, geometry and double refraction index all satisfy the requirement of Y waveguide manufacture craft.
Embodiment 2:
(1) carries out as shown in Figure 2 the pre-treatment of bushing pipe at the MCVD lathe;
(2) adopt the operations such as MCVD process deposits exodermis, deposition stressor layers, etching stressor layers, deposition endodermis, deposition sandwich layer, forward are collapsed, oppositely collapsed, polishing to make the bow-tie type polarization-preserving fiber preform, the optical fiber prefabricating rod outside diameter is 19.8mm, wherein germanium, boron are than being 5:1, and total amount germanium, boron total amount will be 50% of traditional polarization maintaining optical fibre material amount;
(3) then polarization-preserving fiber preform is pulled into the polarization maintaining optical fibre that diameter is 80.5 μ m at wire-drawer-tower; wire-drawing temperature is 2000 ℃; drawing tensile force is 44g; drawing speed of optical fiber is 84m/min; and optical fiber surface coat two-layer photo-cured coating with the protection optical fiber, finally make the polarization maintaining optical fibre that the optical fiber coating diameter is 172 μ m, the stressed zone is refracted as-9.0 ‰; simultaneously, the optics of prepared polarization maintaining optical fibre, geometry and double refraction index all satisfy the requirement of Y waveguide manufacture craft.
Claims (5)
1. a Y waveguide is with the manufacture method of bow-tie type polarization maintaining optical fibre, it is characterized in that polarization-preserving fiber preform adopts chemical Vapor deposition process (MCVD) manufacturing to finish, all processes are all once finished on lathe, without the external environment contact, then utilize wire-drawer-tower that it is pulled into polarization maintaining optical fibre.
2. by the manufacture method of a kind of Y waveguide claimed in claim 1 with the bow-tie type polarization maintaining optical fibre, it is characterized in that the prefabricated rods external diameter is 11～20mm.
3. use the manufacture method of bow-tie type polarization maintaining optical fibre by claim 1 or 2 described a kind of Y waveguides, it is characterized in that the specific refractory power of stressed zone is lower than the specific refractory power of covering, refractive index contrast is-8 ± 1 ‰, and the thermal expansivity of stressed zone is greater than the thermal expansivity of covering.
4. use the manufacture method of bow-tie type polarization maintaining optical fibre by claim 1 or 2 described a kind of Y waveguides, it is characterized in that in the drawing process, the Control for Kiln Temperature of wire-drawer-tower is at 1980 ± 50 ℃, and the drawing optical fibers tension control is at 45 ± 5g, and drawing speed of optical fiber is controlled at 80 ± 10m/min.
5. by the manufacture method of a kind of Y waveguide claimed in claim 4 with the bow-tie type polarization maintaining optical fibre, the diameter that it is characterized in that polarization maintaining optical fibre is 80 ± 1 μ m, and the coat diameter is 170 ± 5 μ m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100033392A CN103030270A (en) | 2013-01-06 | 2013-01-06 | Method for making bow-shaped polarization maintaining optical fiber for Y waveguide |
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| CN2013100033392A CN103030270A (en) | 2013-01-06 | 2013-01-06 | Method for making bow-shaped polarization maintaining optical fiber for Y waveguide |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110244405A (en) * | 2019-06-18 | 2019-09-17 | 烽火通信科技股份有限公司 | A kind of multiband bow-tie type polarization maintaining optical fibre |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4480897A (en) * | 1981-08-27 | 1984-11-06 | Nippon Telegraph & Telephone Public Corporation | Single-polarization single-mode optical fiber |
| CN1892268A (en) * | 2005-06-29 | 2007-01-10 | 株式会社藤仓 | Polarization-maintaining optical fiber and optical fiber gyro |
| US20070089462A1 (en) * | 2002-03-19 | 2007-04-26 | Nufern | Optical Fiber |
| CN201229414Y (en) * | 2008-06-13 | 2009-04-29 | 北京玻璃研究院 | Bar-shaped polarization maintaining fiber |
| CN101734852A (en) * | 2009-12-30 | 2010-06-16 | 上海亨通光电科技有限公司 | Spindle type polarization-preserving fiber preform and production method thereof |
-
2013
- 2013-01-06 CN CN2013100033392A patent/CN103030270A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4480897A (en) * | 1981-08-27 | 1984-11-06 | Nippon Telegraph & Telephone Public Corporation | Single-polarization single-mode optical fiber |
| US20070089462A1 (en) * | 2002-03-19 | 2007-04-26 | Nufern | Optical Fiber |
| CN1892268A (en) * | 2005-06-29 | 2007-01-10 | 株式会社藤仓 | Polarization-maintaining optical fiber and optical fiber gyro |
| CN201229414Y (en) * | 2008-06-13 | 2009-04-29 | 北京玻璃研究院 | Bar-shaped polarization maintaining fiber |
| CN101734852A (en) * | 2009-12-30 | 2010-06-16 | 上海亨通光电科技有限公司 | Spindle type polarization-preserving fiber preform and production method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110244405A (en) * | 2019-06-18 | 2019-09-17 | 烽火通信科技股份有限公司 | A kind of multiband bow-tie type polarization maintaining optical fibre |
| CN110244405B (en) * | 2019-06-18 | 2020-07-07 | 烽火通信科技股份有限公司 | Multiband bow-tie polarization maintaining optical fiber |
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Application publication date: 20130410 |