CN116332496A - Multi-core erbium ytterbium praseodymium codoped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber and preparation method thereof - Google Patents
Multi-core erbium ytterbium praseodymium codoped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber and preparation method thereof Download PDFInfo
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 72
- DFHCFFALRPIRJD-UHFFFAOYSA-N [Pr].[Yb].[Er] Chemical compound [Pr].[Yb].[Er] DFHCFFALRPIRJD-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 239000005354 aluminosilicate glass Substances 0.000 title claims abstract description 49
- 229910052746 lanthanum Inorganic materials 0.000 title claims abstract description 49
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000000835 fiber Substances 0.000 claims abstract description 141
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000011521 glass Substances 0.000 claims abstract description 10
- 238000000227 grinding Methods 0.000 claims abstract description 4
- 238000005498 polishing Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 8
- 239000010453 quartz Substances 0.000 claims description 8
- 238000010309 melting process Methods 0.000 claims description 5
- 239000007790 solid phase Substances 0.000 claims description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 2
- 150000002910 rare earth metals Chemical class 0.000 claims description 2
- 238000005253 cladding Methods 0.000 abstract description 5
- 238000012681 fiber drawing Methods 0.000 abstract description 2
- -1 ytterbium-praseodymium-lanthanum Chemical compound 0.000 abstract 1
- 239000011162 core material Substances 0.000 description 172
- 230000005540 biological transmission Effects 0.000 description 8
- 229910052777 Praseodymium Inorganic materials 0.000 description 4
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 4
- 239000005368 silicate glass Substances 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- BGZYUAAGFXBZMA-UHFFFAOYSA-N [Pr].[Er] Chemical compound [Pr].[Er] BGZYUAAGFXBZMA-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- KWMNWMQPPKKDII-UHFFFAOYSA-N erbium ytterbium Chemical compound [Er].[Yb] KWMNWMQPPKKDII-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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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
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
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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
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/022—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from molten glass in which the resultant product consists of different sorts of glass or is characterised by shape, e.g. hollow fibres, undulated fibres, fibres presenting a rough surface
- C03B37/023—Fibres composed of different sorts of glass, e.g. glass optical fibres, made by the double crucible technique
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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- Geochemistry & Mineralogy (AREA)
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Abstract
The invention discloses a multi-core erbium ytterbium praseodymium codoping lanthanum aluminosilicate glass integrated mixed microstructure optical fiber and a preparation method thereof, wherein the optical fiber is of a cylindrical structure and consists of a fiber core, air holes and Dan Yingou; each of the cores has 6 air holes around it. The preparation method comprises the following steps: (1) Preparing erbium-doped ytterbium-praseodymium-lanthanum aluminosilicate glass, polishing and grinding the glass to serve as a fiber core; (2) Arranging the fiber core and the quartz glass capillary tube into an optical fiber structure preform rod, and sleeving the preform rod into the quartz glass tube; filling the gap of the quartz glass tube with a capillary high-purity quartz glass rod to prepare an optical fiber preform; and (3) placing the optical fiber preform on an optical fiber drawing tower for drawing. According to the multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber, due to the addition of the air cladding, the inter-core crosstalk is small, and meanwhile, the uniformity of the adopted erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass is higher, so that the gain uniformity is ensured, and the inter-core gain difference is reduced.
Description
Technical Field
The invention belongs to the technical field of optical fibers, and particularly relates to a multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber and a preparation method thereof.
Background
The transmission capacity of the single-core single-mode optical fiber at present is close to 100Tb/s of the shannon transmission limit, and with the rapid development of 5G and Internet+, the single-core optical fiber transmission capacity can not meet the commercial requirements of modern communication networks. The space division multiplexing of the multi-core optical fiber is an effective method for solving the limit of the transmission capacity of the single-mode single-core optical fiber at present, and the space division multiplexing dimension of the multi-core optical fiber is N multiplied by M under the assumption that each optical fiber has N fibers and each fiber core supports M modes, so that the transmission capacity of the single optical fiber can be greatly improved. However, to realize long-distance transmission, the multi-core optical fiber space division multiplexing system must compensate the transmission loss through an optical fiber amplifier, so that the multi-core optical fiber amplifier becomes a key device for the practical trend of multi-core optical fiber space division multiplexing. However, the multi-core optical fiber adopted by the current multi-core optical fiber amplifier has the problems of large inter-core crosstalk and unbalanced inter-core amplification, and in addition, the signal gain is realized by adopting an erbium-doped or erbium-ytterbium co-doped mode for the core material, so that the communication requirement of wide bandwidth of C+L communication wave band cannot be effectively met.
Disclosure of Invention
The invention provides a multi-core erbium ytterbium praseodymium codoping lanthanum aluminosilicate glass integrated mixed microstructure optical fiber, which solves the problems of inter-core crosstalk, unbalanced gain and narrow transmission bandwidth of the existing multi-core amplifying optical fiber.
The multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber is of a cylindrical structure, and the cylindrical structure consists of a plurality of fiber cores, a plurality of air holes and Dan Yingou; the fiber core is an erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass fiber core; the quartz area consists of a quartz glass tube and a capillary high-purity quartz glass rod filled in the quartz glass tube; each air hole is a quartz glass capillary; and 6 air holes are distributed around each fiber core.
In the multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber, the outer diameter of the quartz area is 125-500 micrometers, the outer diameter of each air hole is 10-30 micrometers, and the outer diameter of each fiber core is 10-30 micrometers.
In the multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber, the inner diameters of the air holes are equal, and the inner diameters of the air holes are equal to the outer diameter of the fiber core.
In the multi-core erbium-ytterbium praseodymium co-doped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber, the total fiber cores are 7, the fiber cores consist of 1 central fiber core and 6 outer fiber cores, the 6 outer fiber cores form a hexagonal structure, and the central fiber core is positioned at the center of the hexagonal structure.
In the multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber, the total number of fiber cores is 19, and the fiber cores consist of a central fiber core and 18 outer fiber cores; wherein the number of the first outer layer fiber cores is 6, and the number of the second outer layer fiber cores is 12; each outer core forms a hexagonal structure, and the central core is located at the center of the first outer core.
In the multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber, the total number of fiber cores is 37, and the fiber cores consist of a central fiber core and 36 outer fiber cores; wherein the number of the first outer layer fiber cores is 6, the number of the second outer layer fiber cores is 12, and the number of the third outer layer fiber cores is 18; each outer core forms a hexagonal structure, and the central core is located at the center of the first outer core.
In the multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber, the total number of fiber cores is 61, and the fiber cores consist of a central fiber core and 60 outer fiber cores; wherein the number of the first outer layer fiber cores is 6, the number of the second outer layer fiber cores is 12, the number of the third outer layer fiber cores is 18, and the number of the fourth outer layer fiber cores is 24; each outer core forms a hexagonal structure, and the central core is located at the center of the first outer core.
In the multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber, the total fiber cores are 1+6× (1+2+3+4 … … N), N is an integer greater than 4, and the fiber cores consist of a central fiber core and 6× (1+2+3+4 … … N) outer fiber cores; wherein the number of the first outer layer fiber cores is 6, the number of the second outer layer fiber cores is 12, the number of the third outer layer fiber cores is 18, the number of the fourth outer layer fiber cores is 24, and the number of the … … Nth layer is 6N; each outer core forms a hexagonal structure, and the central core is located at the center of the first outer core.
In the multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber, the rare earth doping concentration of the fiber core is 0.01-0.6mol%.
In the multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber, the air holes are periodically arranged and combined to form a hexagonal structure.
The preparation method of the invention comprises the following steps:
(1) Preparing erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass by utilizing a solid-phase melting process, polishing and grinding the glass to prepare a glass rod serving as a fiber core;
(2) Arranging the fiber cores and the quartz glass capillaries into optical fiber structure prefabricated bars by a stacking method, and sleeving the optical fiber structure prefabricated bars into the quartz glass tubes; gaps among the fiber cores, the quartz glass capillaries and the quartz glass tubes are filled with capillary high-purity quartz glass rods, so that optical fiber preforms are manufactured;
(3) And drawing the optical fiber preform to form the multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber.
In the method, the temperature for preparing the erbium-ytterbium-doped praseodymium silicate glass is 1720 ℃.
In the method, the diameter of the glass rod is 2mm.
In the above method, the quartz glass tube has an outer diameter of 36mm and an inner diameter of 26mm.
The invention is mainly used for amplifying the signals of the communication system; the existing multi-core amplifying optical fiber has the problems of inter-core crosstalk, unbalanced inter-core gain, narrow communication bandwidth and the like; in the multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber, 6 air holes form a cladding surrounding 1 fiber core, namely 1 optical fiber unit in a 6+1 mode, all the units are combined to form the whole multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber, inter-core crosstalk is effectively reduced by the air hole cladding, and the erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass fiber core is higher in glass uniformity due to the fact that glass materials of the erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass fiber core are prepared by a melting process, so that the problem of gain uniformity is effectively solved, meanwhile, due to the fact that praseodymium is added, the gain bandwidth of the optical fiber is effectively expanded through particle transition between erbium-praseodymium energy level, the bandwidth is expanded to a communication L band, and even is wider.
Compared with the existing multi-core optical fiber for multi-core amplification, the multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber has the advantages that due to the addition of an air cladding, inter-core crosstalk is small, meanwhile, the uniformity of the erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass adopted by the optical fiber core is higher, gain uniformity is guaranteed, inter-core gain difference is reduced, in addition, the addition of praseodymium effectively expands the gain bandwidth of each independent optical fiber unit, communication capacity is improved, support is provided for multi-core optical fiber communication, especially long-distance communication application, inter-core crosstalk is reduced, inter-core gain difference is reduced, and communication bandwidth is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a multi-core erbium ytterbium praseodymium co-doped lanthanum aluminosilicate glass integrated hybrid microstructure optical fiber in an embodiment of the invention.
Fig. 2 is a physical diagram of a multi-core erbium ytterbium praseodymium codoped lanthanum aluminosilicate glass integrated hybrid microstructure optical fiber in an embodiment of the invention.
In fig. 1-2, 1, core, 2, air holes, 3, quartz region.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which are obtained by a person skilled in the art based on the embodiments of the present invention, fall within the scope of protection of the present invention.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
In the embodiment of the invention, erbium ytterbium praseodymium codoping silicate glass is prepared by utilizing a solid phase melting process, and the method comprises the following steps of: zhuoyuan Huang, jiahao Yang, zhifeng Mo, jiaao Lu, changming Xia, zhiyun Hou, guiyao Zhou, visible and near-infrared emission and energy transition of Er 3+ -Pr 3+ -Yb 3+ tri-doped lanthanum aluminium silicate glasses,Journal of Non-Crystalline Solids,Volume 591,2022,121718,https://doi.org/10.1016/j.jnoncrysol.2022.121718。
Example 1
The embodiment provides a multi-core erbium ytterbium praseodymium codoped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber, the structure of which is shown in figure 1, and which is a cylindrical structure consisting of a fiber core 1, an air hole 2 and a quartz area 3; the fiber core 1 is an erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass fiber core; the quartz area 3 is composed of a quartz glass tube and a capillary high-purity quartz glass rod filled in the quartz glass tube; the air hole 2 is a quartz glass capillary; 6 air holes 2 are distributed around each fiber core 1;
the outer diameter of the quartz area 3 is 360 micrometers, the outer diameter of the air hole 2 is 20 micrometers, and the outer diameter of the fiber core 1 is 20 micrometers;
the inner diameter of each air hole 2 is equal, and the inner diameter of each air hole 2 is equal to the outer diameter of the fiber core 1;
the total number of fiber cores is 7, and the fiber core consists of a central fiber core and six outer fiber cores;
the air holes 2 are arranged and combined periodically to form a hexagonal structure; the six outer fiber cores also form a hexagonal structure;
the doping concentration (mol%) of the central fiber core and the six outer fiber cores are the same, er 2 O 3 、Pr 6 O 11 、Yb 2 O 3 The doping concentration of the alloy is 0.2mol percent, 0.1mol percent and 0.3mol percent respectively, and the composition is 0.2Er 2 O 3 -0.1Pr 6 O 11 -0.3Yb 2 O 3 -69.4SiO 2 -21Al 2 O 3 -9La 2 O 3 ；
The preparation method comprises the following steps:
(1) Preparing erbium-ytterbium-praseodymium co-doped silicate glass by utilizing a solid-phase melting process at 1720 ℃, and preparing the glass rod with the diameter of 2mm as a fiber core by polishing and grinding;
(2) Arranging fiber cores and quartz glass capillaries into optical fiber preformed bars by a butt stacking method, and sleeving the optical fiber structural preformed bars into a quartz glass tube with the outer diameter of 36mm and the inner diameter of 26 mm; the fiber core and the gaps between the quartz glass capillary tube and the quartz glass tube are filled with capillary high-purity quartz glass rods to prepare optical fiber preformed rods;
(3) Placing the optical fiber preform on an optical fiber drawing tower, and drawing a multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber; the real object is shown in figure 2.
In addition, in the multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber, the number of fiber cores can be 19, and the fiber cores consist of one central fiber core and 18 outer fiber cores; wherein the number of the first outer layer fiber cores is 6, and the number of the second outer layer fiber cores is 12; each outer core forms a hexagonal structure, and the central core is located at the center of the first outer core. Alternatively, the total of 37 cores, consisting of one central core and 36 outer cores; wherein the number of the first outer layer fiber cores is 6, the number of the second outer layer fiber cores is 12, and the number of the third outer layer fiber cores is 18; each outer core forms a hexagonal structure, and the central core is located at the center of the first outer core. Alternatively, there are 61 total cores, consisting of one central core and 60 outer cores; wherein the number of the first outer layer fiber cores is 6, the number of the second outer layer fiber cores is 12, the number of the third outer layer fiber cores is 18, and the number of the fourth outer layer fiber cores is 24; each outer core forms a hexagonal structure, and the central core is located at the center of the first outer core.
Similarly, the fiber cores can also have 1+6× (1+2+3+4 … … N), N is an integer greater than 4, and consists of a central fiber core and 6× (1+2+3+4 … … N) outer fiber cores; wherein the number of the first outer layer fiber cores is 6, the number of the second outer layer fiber cores is 12, the number of the third outer layer fiber cores is 18, the number of the fourth outer layer fiber cores is 24, and the number of the … … Nth layer is 6N; each outer core forms a hexagonal structure, and the central core is located at the center of the first outer core.
In summary, the integrated mixed microstructure fiber of the multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass has small inter-core crosstalk due to the addition of the air cladding, and meanwhile, the erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass adopted by the fiber core of the fiber of the invention has higher uniformity, thereby being beneficial to ensuring the uniformity of gain and reducing the difference of gain between cores, and in addition, the addition of praseodymium effectively expands the gain bandwidth of each independent fiber unit, improves the communication capability, and the fiber can provide support for multi-core fiber communication, especially long-distance communication application, reduce the inter-core crosstalk, reduce the difference of gain between cores and improve the communication bandwidth.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (10)
1. The multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber is characterized in that the multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber is of a cylindrical structure, and the cylindrical structure consists of a plurality of fiber cores, a plurality of air holes and Dan Yingou; the fiber core is an erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass fiber core; the quartz area consists of a quartz glass tube and a capillary high-purity quartz glass rod filled in the quartz glass tube; each air hole is a quartz glass capillary; and 6 air holes are distributed around each fiber core.
2. The integrated and mixed micro-structured fiber of multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass according to claim 1, wherein the outer diameter of the quartz region 3 is 125-500 micrometers, the outer diameter of each air hole is 10-30 micrometers, and the outer diameter of each fiber core is 10-30 micrometers.
3. The multi-core erbium ytterbium praseodymium codoped lanthanum aluminosilicate glass integrated hybrid microstructure fiber according to claim 2, wherein each of the air holes has an equal inner diameter and the air holes has an equal inner diameter to the outer diameter of the fiber core.
4. The multi-core erbium ytterbium praseodymium codoped lanthanum aluminosilicate glass integrated hybrid microstructure optical fiber according to claim 1, wherein the total of 7 fiber cores is composed of 1 central fiber core and 6 outer fiber cores, the 6 outer fiber cores form a hexagonal structure, and the central fiber core is positioned at the center of the hexagonal structure.
5. The multi-core erbium ytterbium praseodymium codoped lanthanum aluminosilicate glass integrated hybrid microstructure fiber according to claim 1, wherein the total of 19 fiber cores is composed of one central fiber core and 18 outer fiber cores; wherein the number of the first outer layer fiber cores is 6, and the number of the second outer layer fiber cores is 12; each outer core forms a hexagonal structure, and the central core is located at the center of the first outer core.
6. The multi-core erbium ytterbium praseodymium codoped lanthanum aluminosilicate glass integrated hybrid microstructure fiber according to claim 1, wherein the total of 37 fiber cores consists of one central fiber core and 36 outer fiber cores; wherein the number of the first outer layer fiber cores is 6, the number of the second outer layer fiber cores is 12, and the number of the third outer layer fiber cores is 18; each outer core forms a hexagonal structure, and the central core is located at the center of the first outer core.
7. The multi-core erbium ytterbium praseodymium codoping lanthanum aluminosilicate glass integrated hybrid microstructure optical fiber according to claim 1, wherein the total of the fiber cores is 61, and the fiber cores consist of one central fiber core and 60 outer fiber cores; wherein the number of the first outer layer fiber cores is 6, the number of the second outer layer fiber cores is 12, the number of the third outer layer fiber cores is 18, and the number of the fourth outer layer fiber cores is 24; each outer core forms a hexagonal structure, and the central core is located at the center of the first outer core.
8. The multi-core erbium ytterbium praseodymium codoping lanthanum aluminosilicate glass integrated hybrid microstructure fiber according to claim 1, wherein the total number of fiber cores is 1+6× (1+2+3+4 … … N), N is an integer greater than 4, and consists of one central fiber core and 6× (1+2+3+4 … … N) outer fiber cores; wherein the number of the first outer layer fiber cores is 6, the number of the second outer layer fiber cores is 12, the number of the third outer layer fiber cores is 18, the number of the fourth outer layer fiber cores is 24, and the number of the … … Nth layer is 6N; each outer core forms a hexagonal structure, and the central core is located at the center of the first outer core.
9. The multi-core erbium ytterbium praseodymium codoping lanthanum aluminosilicate glass integrated hybrid microstructure optical fiber according to claim 1, wherein the rare earth doping concentration of the fiber core is 0.01-0.6mol%; the air holes are arranged and combined periodically to form a hexagonal structure.
10. The preparation method of the multi-core erbium ytterbium praseodymium codoped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber as claimed in any one of claims 1 to 9, which is characterized by comprising the following steps:
(1) Preparing erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass by utilizing a solid-phase melting process, polishing and grinding the glass to prepare a glass rod serving as a fiber core;
(2) Arranging the fiber cores and the quartz glass capillaries into optical fiber structure prefabricated bars by a stacking method, and sleeving the optical fiber structure prefabricated bars into the quartz glass tubes; gaps among the fiber cores, the quartz glass capillaries and the quartz glass tubes are filled with capillary high-purity quartz glass rods, so that optical fiber preforms are manufactured;
(3) And drawing the optical fiber preform to form the multi-core erbium-ytterbium-praseodymium co-doped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310093461.7A CN116332496A (en) | 2023-02-03 | 2023-02-03 | Multi-core erbium ytterbium praseodymium codoped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber and preparation method thereof |
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| CN202310093461.7A CN116332496A (en) | 2023-02-03 | 2023-02-03 | Multi-core erbium ytterbium praseodymium codoped lanthanum aluminosilicate glass integrated mixed microstructure optical fiber and preparation method thereof |
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| CN117388979B (en) * | 2023-12-12 | 2024-03-12 | 华南师范大学 | Multi-core microstructure optical fiber and preparation method thereof |
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