CN105866880B - A kind of preparation method of polarization maintaining optical fibre - Google Patents
A kind of preparation method of polarization maintaining optical fibre Download PDFInfo
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- CN105866880B CN105866880B CN201610412177.1A CN201610412177A CN105866880B CN 105866880 B CN105866880 B CN 105866880B CN 201610412177 A CN201610412177 A CN 201610412177A CN 105866880 B CN105866880 B CN 105866880B
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- plug
- optical fibre
- maintaining optical
- polarization maintaining
- quartz
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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
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/024—Optical fibres with cladding with or without a coating with polarisation maintaining properties
-
- 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
-
- 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)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The invention discloses a kind of preparation methods of polarization maintaining optical fibre, comprising the following steps: prepares plug using conventional method；According to plug and the size of required prefabricated rods, the mold of semicylinder is prepared using the material that temperature resistant range is 2500~3000 degrees Celsius；The silica liquid that melting is injected into mold obtains quartz after its condensation and partly cuts casing；The half stressed zone slot and half plug slot compatible with plug size that required shape is polished on casing are partly cut in quartz；The quartz that two centers are put into plug is partly cut into casing by melting heating and is melt into an entirety；In the mixture of the stressed zone hole of formation filling silica and diboron trioxide.Two molding quartz of polishing are partly cut casing by integrated combination fusion method and combined together with plug by the present invention, realize the stressed zone hole of Multiple Shape and large-sized polarization-preserving fiber preform, guarantee the good optical property of polarization-preserving fiber preform, manufacturing cost is effectively reduced and promotes the manufacture efficiency of polarization maintaining optical fibre.
Description
Technical field
The present invention relates to the technical fields of fiber manufacturing, and in particular to a kind of preparation method of polarization maintaining optical fibre.
Background technique
Polarization-maintaining fiber (Polarization Maintaining Optical Fiber, PMF) abbreviation polarization maintaining optical fibre.
Since the polarization characteristic of optical waveguide has many special purposes, in addition have relatively better compatibility with standard single-mode fiber,
Polarization maintaining optical fibre is widely used in fields such as fiber optic communication, Fibre Optical Sensor, light polarization Sensitive Apparatuses.
Since nineteen seventies, each state is all competitively researching and developing high performance polarization maintaining optical fibre.Polarization-maintaining light
There are many fine type, there is different manufacturing methods according to different types of polarization maintaining optical fibre.Round polarization maintaining optical fibre is mainly using drilling
Method and fluting method realize that fan-shaped polarization maintaining optical fibre is then mostly manufactured using improved chemical gaseous phase manufacturing process.
But with the large-scale application of polarization maintaining optical fibre, higher want is proposed to large batch of mass manufacturing techniques
It asks.The polarization-preserving fiber preform size of technique is generally less than normal at present, and size is generally confined within 50mm diameter and length of string
Within 50km, 200mm diameter optical wand with Standard single-mode fiber, highest can draw the manufacturing process of 3000km to fall far short.And
With the new technology development such as optical fibre gyro, Fibre Optical Sensor, the manufacture demand of new type polarization maintaining optical fibre also emerges one after another, existing
Boring method, fluting method and improved chemical gaseous phase manufacturing process etc. have respective limitation, it is difficult to realize diversified big ruler
The manufacture of very little polarization-preserving fiber preform.
In view of this, being badly in need of providing a kind of manufacturing method that can manufacture Multiple Shape, large-sized polarization-preserving fiber preform, energy
The manufacturing technology of polarization maintaining optical fibre and the ability of batch production are effectively driven, the development of optical fiber sensing technology is driven.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of preparation methods of polarization maintaining optical fibre, including following step
It is rapid:
It is heavy using chemical vapour deposition, Plasma Enhanced Chemical Vapor Deposition (PECVD), outside chemical vapor deposition method or axial gas phase
Area method prepares plug；
According to plug and the size of required prefabricated rods, the material preparation half for the use of temperature resistant range being 2500~3000 degrees Celsius
The mold of cylindrical body；
The silica liquid that melting is injected into the mold of semicylinder obtains the stone of the semicolumn bodily form after its condensation
English partly cuts casing, and the periphery that quartz partly cuts casing is composed of center section and semicircle cambered surface；
Half stressed zone slot of required shape is polished on the center section that quartz partly cuts casing and is mutually fitted with plug size
The half plug slot matched；
Two semicylinder quartz are partly cut into sleeve combination together, two halves plug slot group is combined into plug hole, two halves stress
Area's slot combines to form stressed zone hole, and plug is put into plug hole, and two quartz are partly cut casing and plug by melting heating
It is melt into an entirety；
The mixture that silica and diboron trioxide are filled in stressed zone hole, obtains the stressed zone with required shape
The polarization-preserving fiber preform in hole；
Polarization-preserving fiber preform is drawn on wire-drawer-tower, can be obtained the polarization maintaining optical fibre of various diameters.
In the above-mentioned methods, the material that the temperature resistant range is 2500~3000 degrees Celsius is graphite.
In the above-mentioned methods, the shape in the stressed zone hole is circle, sector, hexagon, ellipse or rectangular.
In the above-mentioned methods, the number in the stressed zone hole is two, and is oppositely arranged on the two sides in the plug hole.
In the above-mentioned methods, the stressed zone hole is that circular preform diameter is up to 150mm, the guarantor being drawn into
Inclined fiber lengths are 500km or more.
In the above-mentioned methods, it is 40~200um, coating that the polarization-preserving fiber preform, which can be drawn into silica clad diameter,
Diameter is the polarization maintaining optical fibre of 80~400um.
In the above-mentioned methods, the middle part equating that quartz is partly cut to the semicircle cambered surface of casing by polishing method or aciding, makes
Semicircle cambered surface becomes two sides and partly cuts casing for the adjusting type quartz of arc, mid-plane.
In the above-mentioned methods, the weight ratio range of the silica and diboron trioxide is 9:(0.2~2).
The present invention by preparation quartz partly cut polished on casing required shape half stressed zone hole and with plug size
Compatible half plug slot, and the quartz that two are matched partly is cut by casing by integrated combination fusion method and is permeated with plug
Body realizes the stressed zone hole of Multiple Shape and the manufacture of large-sized polarization-preserving fiber preform, and can guarantee polarization maintaining optical fiber preformed
The good optical property of stick is effectively reduced the manufacturing cost of polarization maintaining optical fibre and promotes the manufacture efficiency of polarization maintaining optical fibre.
Detailed description of the invention
Fig. 1 is the schematic diagram of polarization-preserving fiber preform plug provided by the invention；
Fig. 2 is the structural schematic diagram of embodiment one provided by the invention；
Fig. 3 is the radial cross section of embodiment two provided by the invention；
Fig. 4 is the radial cross section of embodiment three provided by the invention；
Fig. 5 is the radial cross section of example IV provided by the invention；
Fig. 6 is the radial cross section of embodiment five provided by the invention；
Fig. 7 is the radial cross section of embodiment six provided by the invention.
Specific embodiment
The present invention realizes the manufacture of a kind of stressed zone hole Multiple Shape and large-sized polarization maintaining optical fibre, while can realize diameter
Up to the manufacture of the polarization-preserving fiber preform of 80mm or more or even 150mm, and it can guarantee that polarization-preserving fiber preform is good optical
Can, the manufacturing cost of polarization maintaining optical fibre is effectively reduced and promotes the manufacture efficiency of polarization maintaining optical fibre.Combined with specific embodiments below and say
Bright book attached drawing is described in detail the present invention.
The present invention provides a kind of preparation methods of polarization maintaining optical fibre, comprising the following steps:
S1, modified chemical vapor deposition (MCVD), Plasma Enhanced Chemical Vapor Deposition (PECVD) (PCVD), externalizing are used first
The method for learning vapour deposition process (OVD) or axial vapor deposition method (VAD) prepares plug, as shown in Figure 1, plug 11 includes sandwich layer
12 and it is wrapped in the first covering 13 of 12 periphery of sandwich layer, the first covering 13 can be in the process of polarization-preserving fiber preform integrated combination
In, avoid introduced contaminants from entering sandwich layer 12, so that the optical property of optical fiber be avoided to be affected.
S2, it is reached according to plug 11 and the size of required prefabricated rods using high temperature resistants such as graphite using integrated combination fusion method
2500~3000 degrees Celsius of material prepares the mold of semicylinder.
S3, the silica liquid melted after temperature reaches 2300 degrees Celsius is infused in into the mold of semicylinder, to
After it is condensed, the quartz that can be obtained the semicolumn bodily form of required shape partly cuts casing, and quartz partly cuts the periphery of casing by center
Section and semicircle cambered surface are composed.
S4, quartz partly cut casing center section on polish required shape half stressed zone slot and with 11 size of plug
Compatible half plug slot.
S5, two semicylinder quartz are partly cut into sleeve combination together, half plug slot group is combined into plug hole, and two and half answer
Power area slot combines to form stressed zone hole, and plug 11 is put into plug hole, then by way of melting heating, by two semicircles
Cylinder quartz partly cuts casing and plug 11 is melt into an entirety, forms quartz socket tube.
S6, the mixture that silica and diboron trioxide are filled in the stressed zone hole of formation, obtain to have difference
The polarization-preserving fiber preform in the stressed zone hole of shape.The weight ratio range of silica and diboron trioxide mixture is 9:
(0.2~2), to be prepared into high cross-talk or the well crackless polarization-preserving fiber preform of conventional cross-talk end surface grinding；
S7, the polarization-preserving fiber preform of acquisition is drawn on wire-drawer-tower, can be obtained the polarization maintaining optical fibre of various diameters.
The polarization-preserving fiber preform obtained using the above method, is drawn on wire-drawer-tower, can be drawn into silica clad diameter
In 40~200um, polarization maintaining optical fibre of the coating diameter in 80~400um.
In the case where operation wavelength is 850nm, decaying can be lower than 2.0dB/km, and extinction ratio is higher than 40dB/100m, clap
It is long to be less than 2.5mm；In the case where operation wavelength is 1550nm, decaying can be lower than 0.5dB/km, and extinction ratio is higher than 40dB/
100m is clapped long less than 3mm.
Wherein, the shape in stressed zone hole can be circle, sector, hexagon, ellipse or rectangular.Wherein, round, fan-shaped,
The number in hexagon or rectangular stressed zone hole is two, and is oppositely arranged on the two sides in plug hole, oval stressed zone hole
Number is 1, and the periphery in plug hole is arranged in.
The typical case of the polarization-preserving fiber preform of the shape in round, fan-shaped, rectangular, hexagonal stressed zone hole is real individually below
Apply example.
Embodiment one
As shown in Fig. 2, the quartz for round stressed zone hole 31 provided by the invention partly cuts casing schematic diagram, plug hole 21 is
Circle, preform diameter maximum can be 150mm at this time, and the polarization maintaining optical fibre length being drawn into is 500km or more.
The 6 kinds of various sizes of round polarization maintaining optical fibres produced according to the method for embodiment one, this 6 kinds round polarization maintaining optical fibres
The test comparison of each parameter the results are shown in Table 1.
The test parameter of 16 kinds of the table polarization maintaining optical fibres with round stressed zone hole
Embodiment two
As shown in figure 3, polarization maintaining optical fibre has fan-shaped stressed zone hole 32.
Embodiment three
As shown in figure 4, polarization maintaining optical fibre has rectangular stressed zone hole 33.
Example IV
As shown in figure 5, polarization maintaining optical fibre has hexagon stressed zone hole 34.
2 kinds of optical fiber are respectively produced according to the method for embodiment two, embodiment three and example IV, amount to 6 kinds of optical fiber, it is each to join
The results are shown in Table 2 for several test comparisons.
The test parameter of the polarization maintaining optical fibre of 2 different stressed zone hole shape of table
In the present invention, when filling stressed zone hole using the mixture of silica and diboron trioxide, due to mixture
Under high-temperature fusion, internal air can be discharged, and will cause stressed zone hole that can reduce under high-temperature fusion, to cause to protect
Outer diameter of the inclined preform 20 in stressed zone hole two sides reduces, and is not one regular so as to cause the polarization maintaining optical fibre finally drawn
Circle.It is below the embodiment of improved plan in response to this problem.
As shown in Figure 6 and Figure 7, quartz is partly cut by polishing method or aciding and is repaired in the middle part of the semicircle cambered surface of casing 20
It is flat, so that semicircle cambered surface is become two sides arc, the adjusting type quartz of mid-plane partly cuts casing 40.
Embodiment five
As shown in fig. 6, polarization maintaining optical fibre has round stressed zone hole 31.Polarization-preserving fiber preform is placed on high temperature under wire-drawer-tower
When melt drawing, the plane area that adjusting type quartz partly cuts casing 40 can become round under the action of high-temperature fusion is with surface tension, answer
In the case that 21 collapsing of power area hole reduces, the outer diameter of the polarization maintaining optical fibre of two sides also has corresponding reduction, the polarization maintaining optical fibre of formation
Outer diameter a more regular circle can be presented, and its non-circularity of cladding is still able to maintain good value, can be controlled in 1% with
It is interior.
Embodiment six
As shown in fig. 7, polarization maintaining optical fibre has oval stressed zone hole 35.Plug 11, can be to ellipse under high-temperature fusion
The long axis direction in stressed zone hole 35 extends, and then also synchronization can be to 11 collapsing of plug, finally for the long axis in oval stressed zone hole 35
Fire the integral polarization-preserving fiber preform containing elliptical core.Since the long axis direction in oval stressed zone hole 35 is vacuumizing
In the state of melting, it will drive two adjusting type quartz and partly cut casing 40 to the diameter in central longitudinal axis direction reduction collapsing, at this time
The plane area that adjusting type quartz partly cuts casing 40 can become round under high-temperature fusion under surface tension effects, to make to ultimately form
The outer boundary of elliptical core polarization-preserving fiber preform a regular circle is still presented, polarization maintaining optical fibre is drawn on wire-drawer-tower
When, non-circularity of cladding is still able to maintain good value, can be controlled within 1%.
A kind of polarization maintaining optical fibre is respectively prepared according to embodiment five and embodiment six, design parameter is as shown in table 3.
Table 3 has the test parameter of the fibre core polarization maintaining optical fibre in oval stressed zone hole
| Example 13 | Example 14 | |
| Optical wand diameter mm | 45 | 68 |
| Cladding diameter μm | 80 | 125 |
| Coating diameter μm | 165 | 245 |
| It can drawing optical fiber length km | 122 | 152 |
| Operation wavelength nm | 1550 | 1550 |
| Decay dB/km | 0.58 | 0.59 |
| Extinction ratio dB/100m | 35 | 36 |
| Clap long mm | 2.6 | 2.8 |
| Non-circularity of cladding | 0.95% | 0.92% |
The present invention have it is following the utility model has the advantages that
1, the present invention realizes a kind of manufacture of large scale polarization-preserving fiber preform, can disposably draw the guarantor of hundreds of km
Polarisation is fine, to can effectively reduce the manufacturing cost of polarization maintaining optical fibre, effectively promotes the manufacture efficiency of polarization maintaining optical fibre.
2, the present invention can get the polarization maintaining optical fibre of a variety of stressed zone hole shapes, be suitble to grinding for all types of Novel polarization-maintaining opticals
System.
3, the present invention can be suitble to prepare high cross-talk or the well crackless polarization maintaining optical fibre of conventional cross-talk end surface grinding.
The present invention by preparation quartz partly cut polished on casing required shape half stressed zone hole and with plug size
Compatible half plug slot, and the quartz that two are matched partly is cut by casing by integrated combination fusion method and is permeated with plug
Body realizes the stressed zone hole of Multiple Shape and the manufacture of large-sized polarization-preserving fiber preform, and can guarantee polarization maintaining optical fiber preformed
The good optical property of stick is effectively reduced the manufacturing cost of polarization maintaining optical fibre and promotes the manufacture efficiency of polarization maintaining optical fibre.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn that the knots made under the inspiration of the present invention
Structure variation, the technical schemes that are same or similar to the present invention are fallen within the scope of protection of the present invention.
Claims (8)
1. a kind of preparation method of polarization maintaining optical fibre, which comprises the following steps:
Using chemical vapour deposition, Plasma Enhanced Chemical Vapor Deposition (PECVD), outside chemical vapor deposition method or axial vapor deposition method
Prepare plug；
According to plug and the size of required prefabricated rods, semicolumn is prepared using the material that temperature resistant range is 2500~3000 degrees Celsius
The mold of body；
The silica liquid that melting is injected into the mold of semicylinder obtains the quartz half of the semicolumn bodily form after its condensation
Casing is cut, the periphery that quartz partly cuts casing is composed of center section and semicircle cambered surface；
Half stressed zone slot of required shape and compatible with plug size is polished on the center section that quartz partly cuts casing
Half plug slot；
Two semicylinder quartz are partly cut into sleeve combination together, two halves plug slot group is combined into plug hole, two halves stressed zone slot
Combination form stressed zone hole, plug is put into plug hole, then melting heating by way of, by two quartz partly cut casing with
Plug is melt into an entirety；
In the mixture of stressed zone hole filling silica and diboron trioxide, the guarantor with the stressed zone hole of required shape is obtained
Inclined preform；
Polarization-preserving fiber preform is drawn on wire-drawer-tower, can be obtained the polarization maintaining optical fibre of various diameters.
2. a kind of preparation method of polarization maintaining optical fibre as described in claim 1, which is characterized in that the temperature resistant range is 2500~
3000 degrees Celsius of material is graphite.
3. a kind of preparation method of polarization maintaining optical fibre as described in claim 1, which is characterized in that the shape in the stressed zone hole is
Circle, sector, hexagon, ellipse or rectangular.
4. a kind of preparation method of polarization maintaining optical fibre as described in claim 1, which is characterized in that the number in the stressed zone hole is
Two, and it is oppositely arranged on the two sides in the plug hole.
5. a kind of preparation method of polarization maintaining optical fibre as claimed in claim 3, which is characterized in that the stressed zone hole is circular
Preform diameter is up to 150mm, and the polarization maintaining optical fibre length being drawn into is 500km or more.
6. a kind of preparation method of polarization maintaining optical fibre as described in claim 1, which is characterized in that the polarization-preserving fiber preform can
It is drawn into the polarization maintaining optical fibre that silica clad diameter is 40~200um, coating diameter is 80~400um.
7. a kind of preparation method of polarization maintaining optical fibre as described in claim 1, which is characterized in that will by polishing method or aciding
Quartz partly cuts the middle part equating of the semicircle cambered surface of casing, and semicircle cambered surface is made to become the adjusting type stone of two sides arc, mid-plane
English partly cuts casing.
8. a kind of preparation method of polarization maintaining optical fibre as described in claim 1, which is characterized in that the silica and three oxidations
The range of the weight ratio of two boron is 9:(0.2~2).
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106746586B (en) * | 2016-12-13 | 2023-01-17 | 江苏法尔胜光电科技有限公司 | Stress type polarization maintaining optical fiber preform with symmetrical hole structure |
| CN109100332B (en) * | 2018-07-10 | 2021-07-02 | 桂林电子科技大学 | Double-transmission peak plasma optical fiber sensor based on asymmetric opening ring structure |
| JP2020194014A (en) * | 2019-05-24 | 2020-12-03 | 株式会社フジクラ | Optical fiber and laser device |
| CN111792835B (en) * | 2020-06-18 | 2022-08-05 | 广州宏晟光电科技股份有限公司 | Glass capillary tube and preparation method thereof |
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Effective date of registration: 20161230 Address after: 430074 East Lake Development Zone, Hubei, Optics Valley Venture Street, No. 67, No. Applicant after: Fenghuo Communication Science and Technology Co., Ltd. Applicant after: Rui Light Communication Technology Co Ltd Address before: 430074 East Lake Development Zone, Hubei, Optics Valley Venture Street, No. 67, No. Applicant before: Fenghuo Communication Science and Technology Co., Ltd. |
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