CN102701584A - Method for processing optical fiber preform - Google Patents
Method for processing optical fiber preform Download PDFInfo
- Publication number
- CN102701584A CN102701584A CN2012101890891A CN201210189089A CN102701584A CN 102701584 A CN102701584 A CN 102701584A CN 2012101890891 A CN2012101890891 A CN 2012101890891A CN 201210189089 A CN201210189089 A CN 201210189089A CN 102701584 A CN102701584 A CN 102701584A
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- China
- Prior art keywords
- preform
- processed
- working method
- optical fiber
- grinding machine
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Classifications
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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
- C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
- C03B37/01211—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube
- C03B37/01217—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube for making preforms of polarisation-maintaining optical fibres
-
- 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
- C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
- C03B37/01225—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing
- C03B37/01228—Removal of preform material
- C03B37/01234—Removal of preform material to form longitudinal grooves, e.g. by chamfering
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/10—Internal structure or shape details
-
- 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
Abstract
The invention discloses a method for processing an optical fiber preform. The method comprises the following steps of: annealing the preform to obtain the optical fiber preform to be processed; fixing the optical fiber preform to be processed on a grinding machine; grinding one side of the optical fiber preform to form a groove, and polishing; and turning over the optical fiber preform to be processed and fixing on the grinding machine, and grinding the other side of the optical fiber preform to form a groove and polishing to obtain the processed optical fiber perform. According to the method, the optical fiber perform is processed by a method for forming the grooves symmetrically on the sides, so that the optical fiber preform processed by the method has the advantages of flexible design and simplicity in manufacturing, and can be easily drawn into a polarization maintaining optical fiber which has a superfine diameter (a cladding diameter is 45 mu m) and is used for an oval stress area easily.
Description
Technical field
The present invention relates to the optic fibre manufacturing technology field, particularly relate to a kind of working method of preform.
Background technology
Polarization maintaining optical fibre has stronger polarization hold facility for line polarized light, and with general single mode fiber good consistency is arranged.Because these characteristics of polarization maintaining optical fibre, it has obtained application more and more widely, the particularly application in fibre optic gyroscope in opticfiber communication and optical fiber sensing system.Along with both at home and abroad the research of fibre optic gyroscope being goed deep into; One of them important developing direction is exactly the miniaturized of fibre optic gyroscope; To reduce the volume of optical fiber loop at first exactly, under the constant situation of optical fiber loop length, can only be through reducing the volume that fibre diameter reduce optical fiber loop.In addition, because the minimizing of fibre diameter can also reduce the number of plies that ring twines under equal length, this also has positive meaning for the temperature performance that improves optical fiber loop.At present, the polarization maintaining optical fibre of using always is divided into panda type, knot type and ellipse according to the difference of stressed zone.Theoretical investigation shows; Oval stressed zone type polarization maintaining optical fibre has remarkable advantages aspect the ultra-fine optical fiber of making; It is little that reason is that the stressed zone reduces for the birefringence effect influence of oval stressed zone type polarization maintaining optical fibre, is easier to reach high birefringence, satisfies the requirement of fibre optic gyroscope; Therefore, oval stressed zone type polarization maintaining optical fibre is that polarization maintaining optical fibre adapts to the preferred option that fibre optic gyroscope develops towards light, little, clever direction.
Summary of the invention
The technical problem that the present invention will solve provides a kind of working method of preform, in order to satisfy scientific research, to produce the demand to thin diameter polarization maintaining optical fibre.
For solving the problems of the technologies described above, the present invention provides a kind of working method of preform, may further comprise the steps:
Prefabricated rods is annealed, obtain preform to be processed;
Said preform to be processed is fixed on the grinding machine, grinds out groove in said preform one side, and polish;
Said preform turn-over to be processed is fixed on the grinding machine, grinds out groove at said preform opposite side, and polish, the preform that obtains processing.
Further, annealing temperature is 1000 ± 50 ℃, and annealing time is 24 ± 1 hours.
Further, said preform to be processed is fixed on the grinding machine, specifically may further comprise the steps:
Preform to be processed is fixed in the processing district of grinding machine;
With the kind of calliper height of preform on anchor clamps to be processed; With the excellent core of microscope from top observation preform to be processed; The limit moves horizontally preform limit to be processed and observes; The tilt adjustment leading screw of turn grinding machine, the excellent core of regulating preform to be processed is consistent with the grinder level travel direction.
Further, said groove is shaped as rectangle, trilateral, circle or two fluting shape.
Further, the degree of depth of said groove is 5% ~ 25% of a preform diameter.
Further, the polishing degree of depth is: 0.3mm ~ 1mm; Polishing time is: 0.5 ~ 2 hour.
Further, the said preform that processes is drawn into polarization maintaining optical fibre on wire-drawer-tower.
Further, the said preform that processes is heated to 2000 ± 100 ℃ at wire-drawer-tower, make its fusion softening after, be drawn into polarization maintaining optical fibre.
Further, polarization maintaining optical fibre is the polarization maintaining optical fibre of oval stressed zone, and its cladding diameter is 45 μ m.
Further, the diameter of said preform to be processed is: 10mm ~ 20mm.
Beneficial effect of the present invention is following:
The present invention adopts the method processing preform of side symmetrical grooving; Adopt this method processed optical fiber prefabricated rods; Have flexible design, make simple advantage, and preform can be drawn into the polarization maintaining optical fibre of the oval stressed zone in ultra-fine footpath (cladding diameter is 45 μ m) easily.
Description of drawings
Fig. 1 is the schema of a kind of working method of preform in the embodiment of the invention;
Fig. 2 is the end view of preform to be processed in the embodiment of the invention;
Fig. 3 is the end view that preform is processed with triangular groove in the embodiment of the invention;
Fig. 4 is the end face signal that preform is processed with rectangular recess in the embodiment of the invention;
Fig. 5 is the end face signal that preform is processed with circular groove in the embodiment of the invention;
Fig. 6 is the end face signal that preform is processed with two fluting connected in stars in the embodiment of the invention;
Fig. 7 is the drawing process synoptic diagram of preform in the embodiment of the invention.
Embodiment
The invention provides a kind of working method of preform,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, does not limit the present invention.
As shown in Figure 1, the embodiment of the invention relates to a kind of working method of preform, may further comprise the steps:
Step S101 anneals to prefabricated rods, obtains preform to be processed; Wherein, annealing temperature is 1000 ± 50 ℃, and annealing time is 24 ± 1 hours.Optical fiber prefabricating rod shape to be processed is as shown in Figure 2.Among Fig. 2, the annulus in bosom is represented fibre core, and the stressed zone is represented in the shadow region in the fibre core outside, and the zone in the outside, stressed zone is quartzy district.The diameter of preform to be processed is: 10mm ~ 20mm.
Step S102 is fixed on said preform to be processed on the grinding machine, grinds out groove in said preform one side, and polishes;
Wherein, said preform to be processed is fixed on the grinding machine, specifically may further comprise the steps:
Preform to be processed is fixed in the processing district of grinding machine;
With the kind of calliper height of preform on anchor clamps to be processed; With the excellent core of microscope from top observation preform to be processed; The limit moves horizontally preform limit to be processed and observes; The tilt adjustment leading screw of turn grinding machine, the excellent core of regulating preform to be processed is consistent with the grinder level travel direction.
During milled grooves, drop to emery wheel close with preform height to be processed, the range estimation emery wheel is vertical with the vertex of preform to be processed.Preform to be processed one side is ground out the groove of the desired shape and the degree of depth.For example: triangular form, rectangle, circle, two fluting shape, shown in Fig. 3 ~ 6, in Fig. 3 ~ 6, dashed region is exactly a slotted zones.Wherein, two fluting shapes are exactly to grind a large diameter circular groove earlier, in circular groove, grind the circular groove of a small dia again, form two grooves.The depth of groove of different shape is 5% ~ 25% of a preform diameter.
During polishing, the degree of depth of reservation 0.3mm ~ 1mm (the polishing degree of depth) is strolled the cutter polishing, polishes to stop after 0.5 ~ 2 hour.
Step S103 is fixed on said preform turn-over to be processed on the grinding machine, grinds out groove at said preform opposite side, and polishes, the preform that obtains processing.The concrete operations of this step are identical with step S102, and just in the opposite side machined grooves of preform to be processed, therefore, this step is not described in detail.
After the preform that obtains processing, make its fusion softening the preform that processes temperature with 2000 ± 100 ℃ on wire-drawer-tower, be drawn into polarization maintaining optical fibre.Drawing process is as shown in Figure 7, and the effect of quartzy cladding surface tension force makes the profile sphering of prefabricated rods, and inner circular stressed zone part is deformed into ellipse.The polarization maintaining optical fibre that obtains after the drawing is the polarization maintaining optical fibre of oval stressed zone, and its cladding diameter is 45 μ m.
Below, be elaborated with two specific exampless:
First embodiment:
(1) temperature with 950 ℃ was annealed 25 hours to prefabricated rods in chamber type electric resistance furnace, reduced remaining thermal stresses in the prefabricated rods;
(2) be the processing district that 12mm preform to be processed is fixed in multi-purpose grinding machine with diameter;
(3) with the height of kind of calliper prefabricated rods on anchor clamps, it is consistent with the horizontal machine direction of multi-purpose grinding machine to adjust excellent core through pad; From top observation prefabricated rods rod core, the limit moves horizontally the prefabricated rods limit and observes with microscope, the tilt adjustment leading screw of turn multi-purpose grinding machine, and regulating preform core and multi-purpose grinding machine, to move horizontally direction consistent;
(4) drop to emery wheel close with the prefabricated rods height, the range estimation emery wheel vertical with the vertex of prefabricated rods;
Groove, the degree of depth of (5) preform one side being ground out triangular shape are 2mm.
(6) degree of depth of reserving 0.4mm is strolled the cutter polishing, polishes to stop after 0.6 hour.
(7) the prefabricated rods turn-over is clamped in the processing district of multi-purpose grinding machine, repeating step 3-6.
(8) with the preform that processes on wire-drawer-tower with 2000 ℃ temperature, be drawn into oval stressed zone polarization maintaining optical fibre.
Second embodiment:
(1) in chamber type electric resistance furnace, prefabricated rods was annealed 23 hours, reduce remaining thermal stresses in the prefabricated rods with 1050 ℃ of temperature;
(2) be the processing district that 20mm preform to be processed is fixed in multi-purpose grinding machine with diameter;
(3) with the height of kind of calliper prefabricated rods on anchor clamps, it is consistent with the horizontal machine direction of multi-purpose grinding machine to adjust excellent core through pad; From top observation prefabricated rods rod core, the limit moves horizontally the prefabricated rods limit and observes with microscope, the tilt adjustment leading screw of turn multi-purpose grinding machine, and regulating preform core and multi-purpose grinding machine, to move horizontally direction consistent;
(4) drop to emery wheel close with the prefabricated rods height, the range estimation emery wheel vertical with the vertex of prefabricated rods;
Groove, the degree of depth of (5) preform one side being ground out semi-circular shape are 4mm;
(6) degree of depth of reserving 0.8mm is strolled the cutter polishing, polishes to stop after 1.2 hours;
(7) the prefabricated rods turn-over is clamped in the processing district of multi-purpose grinding machine, repeating step 3-6;
(8) with the preform that processes on wire-drawer-tower with 2050 ℃ temperature, be drawn into oval stressed zone polarization maintaining optical fibre.
Can find out by the foregoing description; The present invention adopts the method processing preform of side symmetrical grooving; Adopt this method processed optical fiber prefabricated rods; Have flexible design, make simple advantage, and preform can be drawn into the polarization maintaining optical fibre of the oval stressed zone in ultra-fine footpath (cladding diameter is 45 μ m) easily.
Although be the example purpose, the preferred embodiments of the present invention are disclosed, it also is possible those skilled in the art will recognize various improvement, increase and replacement, therefore, scope of the present invention should be not limited to the foregoing description.
Claims (10)
1. the working method of a preform is characterized in that, may further comprise the steps:
Prefabricated rods is annealed, obtain preform to be processed;
Said preform to be processed is fixed on the grinding machine, grinds out groove in said preform one side, and polish;
Said preform turn-over to be processed is fixed on the grinding machine, grinds out groove at said preform opposite side, and polish, the preform that obtains processing.
2. the working method of preform as claimed in claim 1 is characterized in that, annealing temperature is 1000 ± 50 ℃, and annealing time is 24 ± 1 hours.
3. the working method of preform as claimed in claim 1 is characterized in that, said preform to be processed is fixed on the grinding machine, specifically may further comprise the steps:
Preform to be processed is fixed in the processing district of grinding machine;
With the kind of calliper height of preform on anchor clamps to be processed; With the excellent core of microscope from top observation preform to be processed; The limit moves horizontally preform limit to be processed and observes; The tilt adjustment leading screw of turn grinding machine, the excellent core of regulating preform to be processed is consistent with the grinder level travel direction.
4. the working method of preform as claimed in claim 1 is characterized in that, said groove be shaped as rectangle, trilateral, circle or two fluting shape.
5. the working method of preform as claimed in claim 4 is characterized in that, the degree of depth of said groove is 5% ~ 25% of a preform diameter.
6. the working method of preform as claimed in claim 1 is characterized in that, the polishing degree of depth is: 0.3mm ~ 1mm; Polishing time is: 0.5 ~ 2 hour.
7. the working method of preform as claimed in claim 1 is characterized in that, the said preform that processes is drawn into polarization maintaining optical fibre on wire-drawer-tower.
8. the working method of preform as claimed in claim 7 is characterized in that, the said preform that processes is heated to 2000 ± 100 ℃ at wire-drawer-tower, make its fusion softening after, be drawn into polarization maintaining optical fibre.
9. like the working method of claim 7 or 8 described preforms, it is characterized in that polarization maintaining optical fibre is the polarization maintaining optical fibre of oval stressed zone, its cladding diameter is 45 μ m.
10. like the working method of each described preform of claim 1 ~ 9, it is characterized in that the diameter of said preform to be processed is: 10mm ~ 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210189089.1A CN102701584B (en) | 2012-06-11 | 2012-06-11 | Method for processing optical fiber preform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210189089.1A CN102701584B (en) | 2012-06-11 | 2012-06-11 | Method for processing optical fiber preform |
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| CN102701584A true CN102701584A (en) | 2012-10-03 |
| CN102701584B CN102701584B (en) | 2015-04-15 |
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| CN201210189089.1A Expired - Fee Related CN102701584B (en) | 2012-06-11 | 2012-06-11 | Method for processing optical fiber preform |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102976608A (en) * | 2012-12-19 | 2013-03-20 | 江苏亨通光电股份有限公司 | Method and device for producing diboron trioxide-doped stress rod |
| CN104608020A (en) * | 2015-02-03 | 2015-05-13 | 中国电子科技集团公司第四十六研究所 | Machining method of double-clad fiber octangle inner clad and fixture |
| CN104865635A (en) * | 2015-06-01 | 2015-08-26 | 武汉睿芯特种光纤有限责任公司 | Elliptical cladding polarization-maintaining large-mode-area gain fiber |
| CN110606657A (en) * | 2018-06-15 | 2019-12-24 | 华中科技大学 | Large-core-diameter rare earth doped optical fiber preform and preparation method thereof |
| CN116065245A (en) * | 2023-01-05 | 2023-05-05 | 华南理工大学 | Polymer fiber with controllable conduction path, preparation device and preparation method thereof |
| CN116065245B (en) * | 2023-01-05 | 2024-04-19 | 华南理工大学 | Polymer fiber with controllable conduction path, preparation device and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5482525A (en) * | 1988-05-27 | 1996-01-09 | Hitachi Cable Limited | Method of producing elliptic core type polarization-maintaining optical fiber |
| CN101033112A (en) * | 2006-12-29 | 2007-09-12 | 北京交通大学 | Panda-shape polarization maintaining optical fiber prepared by lateral symmetrical open groove and method |
-
2012
- 2012-06-11 CN CN201210189089.1A patent/CN102701584B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5482525A (en) * | 1988-05-27 | 1996-01-09 | Hitachi Cable Limited | Method of producing elliptic core type polarization-maintaining optical fiber |
| CN101033112A (en) * | 2006-12-29 | 2007-09-12 | 北京交通大学 | Panda-shape polarization maintaining optical fiber prepared by lateral symmetrical open groove and method |
Non-Patent Citations (1)
| Title |
|---|
| 卫延: ""新型特种光纤和相关制作工艺的研究"", 《中国博士学位论文全文数据库 信息科技辑》, no. 5, 15 May 2008 (2008-05-15), pages 110 - 123 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102976608A (en) * | 2012-12-19 | 2013-03-20 | 江苏亨通光电股份有限公司 | Method and device for producing diboron trioxide-doped stress rod |
| CN104608020A (en) * | 2015-02-03 | 2015-05-13 | 中国电子科技集团公司第四十六研究所 | Machining method of double-clad fiber octangle inner clad and fixture |
| CN104865635A (en) * | 2015-06-01 | 2015-08-26 | 武汉睿芯特种光纤有限责任公司 | Elliptical cladding polarization-maintaining large-mode-area gain fiber |
| CN104865635B (en) * | 2015-06-01 | 2018-10-12 | 武汉睿芯特种光纤有限责任公司 | A kind of ellipse covering polarization-maintaining large mode field gain fibre |
| CN110606657A (en) * | 2018-06-15 | 2019-12-24 | 华中科技大学 | Large-core-diameter rare earth doped optical fiber preform and preparation method thereof |
| CN110606657B (en) * | 2018-06-15 | 2020-10-16 | 华中科技大学 | Large-core-diameter rare earth doped optical fiber preform and preparation method thereof |
| CN116065245A (en) * | 2023-01-05 | 2023-05-05 | 华南理工大学 | Polymer fiber with controllable conduction path, preparation device and preparation method thereof |
| CN116065245B (en) * | 2023-01-05 | 2024-04-19 | 华南理工大学 | Polymer fiber with controllable conduction path, preparation device and preparation method thereof |
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| CN102701584B (en) | 2015-04-15 |
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