CN116482798A - Composite material hollow anti-resonance optical fiber with low-loss light guide in mid-infrared band - Google Patents
Composite material hollow anti-resonance optical fiber with low-loss light guide in mid-infrared band Download PDFInfo
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- CN116482798A CN116482798A CN202310481093.3A CN202310481093A CN116482798A CN 116482798 A CN116482798 A CN 116482798A CN 202310481093 A CN202310481093 A CN 202310481093A CN 116482798 A CN116482798 A CN 116482798A
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- 239000002131 composite material Substances 0.000 title claims abstract description 74
- 239000013307 optical fiber Substances 0.000 title claims abstract description 42
- 238000005253 cladding Methods 0.000 claims abstract description 53
- 239000000835 fiber Substances 0.000 claims abstract description 51
- 239000000463 material Substances 0.000 claims abstract description 40
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 238000002834 transmittance Methods 0.000 claims abstract description 5
- 230000017525 heat dissipation Effects 0.000 claims description 12
- 230000003287 optical effect Effects 0.000 claims description 11
- 238000000151 deposition Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 5
- 230000010287 polarization Effects 0.000 claims description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 2
- 239000010432 diamond Substances 0.000 claims description 2
- 229910003460 diamond Inorganic materials 0.000 claims description 2
- AKUCEXGLFUSJCD-UHFFFAOYSA-N indium(3+);selenium(2-) Chemical compound [Se-2].[Se-2].[Se-2].[In+3].[In+3] AKUCEXGLFUSJCD-UHFFFAOYSA-N 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 8
- 238000013461 design Methods 0.000 abstract description 6
- 239000010453 quartz Substances 0.000 description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 19
- 238000010586 diagram Methods 0.000 description 6
- 239000012510 hollow fiber Substances 0.000 description 6
- 230000008021 deposition Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 239000004038 photonic crystal Substances 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- UKUVVAMSXXBMRX-UHFFFAOYSA-N 2,4,5-trithia-1,3-diarsabicyclo[1.1.1]pentane Chemical compound S1[As]2S[As]1S2 UKUVVAMSXXBMRX-UHFFFAOYSA-N 0.000 description 2
- 229940052288 arsenic trisulfide Drugs 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- -1 and simultaneously Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 235000015243 ice cream Nutrition 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008832 photodamage Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
Classifications
-
- 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
- G02B6/02295—Microstructured optical fibre
- G02B6/02314—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes
- G02B6/02342—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes characterised by cladding features, i.e. light confining region
-
- 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
- G02B6/032—Optical fibres with cladding with or without a coating with non solid core or cladding
-
- 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
- G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
- G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
- G02B6/03622—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Glass Compositions (AREA)
Abstract
The invention discloses a composite material hollow anti-resonance optical fiber with low loss light guide in a middle infrared band, which comprises the following components: the fiber core region, the microstructure cladding region and the outer cladding region are sequentially arranged from inside to outside; the microstructure cladding region is composed of a plurality of composite material rings which are spaced from each other and uniformly distributed circumferentially, and the outer cladding region is composed of an outer cladding which covers the microstructure cladding region; each composite ring comprises an inner ring and an outer ring, the material of the inner ring is the same as that of the outer cladding, and the material of the outer ring is selected to have high transmittance in a required wave band. The composite material hollow anti-resonance fiber of the invention reduces the transmission loss of the mid-infrared band laser by the innovative design of the microstructure cladding while ensuring that the composite material hollow anti-resonance fiber has a plurality of advantages of the traditional hollow anti-resonance fiber, and reduces the absorption of the hollow anti-resonance fiber to light, thereby ensuring that the composite material hollow anti-resonance fiber has low transmission loss and even ultra-low loss transmission less than 0.022dB/m@4 mu m.
Description
Technical Field
The invention relates to the technical field of optical fibers, in particular to a composite material hollow anti-resonance optical fiber with low-loss light guide in a middle infrared band.
Background
The mid-infrared band laser has important application value in various fields such as military photoelectric countermeasure, atmospheric environment detection, special remote monitoring, spectrum research and the like. Along with the rapid development of laser technology, optical fiber technology is also increasingly widely applied to the fields, so that not only is technical innovation brought to the fields, but also the rapid development of related fields is promoted. The quartz optical fiber has remarkable effects in the bands of visible light, near infrared and the like due to the advantages of small transmission loss, good chemical stability, high mechanical strength and the like, and is widely applied to the fields of communication, detection, sensing, laser transmission and the like, but is limited by intrinsic absorption of materials, and the quartz optical fiber cannot play a role in the mid-infrared band. Because of the lack of the optical fibers in the corresponding wave bands, the optical fibers can be transmitted and detected only through free space in many application fields, which means that the whole device is huge in size and complex in structure, extra loss and instability are brought, and various applications in the middle infrared wave bands are seriously affected.
In order to solve the requirements of the mid-infrared band transmission optical fiber, soft glass optical fiber and coated optical fiber are generated, but the soft glass optical fiber and the coated optical fiber cannot be applied to the fields due to the defects of high loss, low mechanical strength, poor chemical stability, low laser damage threshold, poor bending resistance, high preparation difficulty and the like.
The hollow-core photonic crystal fiber is one of the most important inventions in the field of fiber photonics, and since the birth of the hollow-core photonic crystal fiber, the hollow-core photonic crystal fiber has the advantages of low dispersion, low delay, low nonlinearity, high photodamage threshold, interference resistance, liquid or gas filling and the like which are not possessed by the traditional solid-core fiber, and has great application potential and wide development prospect in various fields. Hollow photonic crystal fibers are classified into hollow photonic bandgap fibers and hollow antiresonant fibers, and hollow antiresonant fibers are widely focused by students at home and abroad by their simpler cladding structure, wider spectrum and lower transmission loss compared with hollow photonic bandgap fibers. In recent years, with the deep exploration of the light guiding mechanism of the hollow anti-resonance optical fiber by scientific researchers, the hollow anti-resonance optical fiber structure layers with excellent optical performance such as single ring non-node, non-node embedded pipe, non-node conjoined pipe and the like are endless, the light guiding wave band can be from ultraviolet to middle infrared, and the communication wave band loss can reach 0.174dB/km beyond the quartz optical fiber. Although the hollow anti-resonance optical fiber can widen the spectrum width to a middle infrared band, the hollow anti-resonance optical fiber is limited by higher mode field overlapping degree and intrinsic defects of glass materials at a long wavelength, so that absorption loss is dominant, the application requirement of a longer band cannot be met, and the design of the hollow anti-resonance optical fiber made of a composite material for low-loss light guide of the middle infrared band is still lacking in the prior art.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a composite material hollow anti-resonance optical fiber with low-loss light guide in a mid-infrared band.
The invention discloses a composite material hollow anti-resonance optical fiber with low loss light guide in a middle infrared band, which comprises the following components: the fiber core region, the microstructure cladding region and the outer cladding region are sequentially arranged from inside to outside;
the microstructure cladding region is composed of a plurality of composite material rings which are spaced from each other and uniformly distributed in the circumferential direction, and the outer cladding region is composed of an outer cladding which covers the microstructure cladding region;
each composite ring comprises an inner ring and an outer ring, the material of the inner ring is the same as that of the outer cladding, and the material of the outer ring is selected from materials with high transmittance in a required wave band.
As a further improvement of the invention, the composite hollow anti-resonance optical fiber guides light based on an anti-resonance reflection optical waveguide principle, and low-loss light guide is realized in different wave bands through the composite ring.
As a further improvement of the invention, the refractive index of the composite material ring is regulated and controlled by regulating the thickness of the material deposited on the outer ring, so that the regulation and control of the resonance peak position are realized.
As a further improvement of the present invention, the composite ring includes, but is not limited to, one of a circular ring, a nested tube, a negative curvature, an ice cream, a straight, and a conjoined tube.
As a further improvement of the present invention, the number of the composite rings is not less than 3.
As a further improvement of the invention, the outer ring is obtained by depositing materials on the inner ring, and the materials of the outer ring are materials with good light transmission performance in the middle infrared band, including but not limited to one of sulfide, fluoride, diamond, indium selenide and other optical materials.
As a further improvement of the present invention, the refractive index of the core region is lower than the refractive index of the outer ring, the inner ring and the outer cladding, and the core medium of the core region is gas, vacuum or liquid; wherein, the fiber core region can be filled with gas or liquid for nonlinear optical study, and the fiber core region is filled with inert gas to eliminate H 2 O, HCl and the like, loss peaks due to absorption in the transmission band.
As a further improvement of the invention, the wall thickness, the dimensions, the mutual spacing, etc. of the composite rings can be adjusted by varying the drawing parameters, and the thickness of the outer cladding can be adjusted by varying the drawing parameters.
As a further improvement of the invention, single-mode or multimode transmission is achieved by adjusting the dimensional ratio of the composite ring to the core region.
As a further development of the invention, the adjustment of the laser polarization is achieved by the structure of the composite ring and the selective deposition.
As a further improvement of the invention, a plurality of heat dissipation holes which are spaced from each other and uniformly distributed in the circumferential direction are arranged in the outer layer, and the heat dissipation holes can have the advantages of fast heat dissipation, polarization maintaining transmission and the like on the premise of not damaging the light guiding performance of the optical fiber, and simultaneously, gas or liquid with higher heat conductivity coefficient can be injected into the heat dissipation holes so as to improve the heat dissipation capacity.
Compared with the prior art, the invention has the beneficial effects that:
the composite material hollow anti-resonance fiber of the invention reduces the transmission loss of the mid-infrared band laser by the innovative design of the microstructure cladding while ensuring that the composite material hollow anti-resonance fiber has a plurality of advantages of the traditional hollow anti-resonance fiber, and reduces the absorption of the hollow anti-resonance fiber to light, thereby ensuring that the composite material hollow anti-resonance fiber has low transmission loss and even ultra-low loss transmission less than 0.022dB/m@4 mu m.
Drawings
FIG. 1 is a schematic diagram of the end face/radial cross-section of a composite hollow-core antiresonant fiber disclosed in example 1 of the present invention;
FIG. 2 is a graph of the loss of the composite hollow-core antiresonant fiber of example 1 of the present invention;
FIG. 3 is a graph showing the loss of the composite hollow-core antiresonant fiber of example 1 of the present invention;
FIG. 4 is a graph showing the loss of a composite hollow-core antiresonant fiber of example 1 according to the present invention;
FIG. 5 is a schematic diagram of the end/radial cross-section of a composite hollow-core antiresonant fiber disclosed in example 2 of the present invention;
FIG. 6 is a schematic diagram of an end/radial cross-section of a composite hollow-core antiresonant fiber disclosed in example 3 of the present invention;
FIG. 7 is a schematic diagram of an end/radial cross-section of a composite hollow-core antiresonant fiber disclosed in example 4 of the present invention;
FIG. 8 is a schematic diagram of the end/radial cross-section of a composite hollow-core antiresonant fiber disclosed in example 5 of the present invention;
FIG. 9 is a schematic diagram showing the structure of the end face/radial cross section of the composite hollow-core antiresonant fiber disclosed in example 6 of the present invention.
In the figure:
10. a core region; 20. a microstructured cladding region; 21. a composite ring; 22. an inner ring; 23. an outer ring; 30. an outer cladding region; 31. an outer cladding; 32. and the heat dissipation holes.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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 of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention is described in further detail below with reference to the attached drawing figures:
example 1:
as shown in fig. 1, the present invention provides a composite material hollow anti-resonance optical fiber for low-loss light guide in mid-infrared band, comprising: the micro-structure cladding region 20 consists of 7 composite material rings 21 which are spaced from each other and uniformly distributed circumferentially, the outer cladding region 30 consists of an outer cladding 31 which covers the micro-structure cladding region, the fiber core region 10 is an inscribed circle of a plurality of composite material rings, and the outer cladding region 30 is an circumscribed circle of a plurality of composite material rings; each composite ring 21 includes an inner ring 22 and an outer ring 23, the material of the inner ring 22 is the same as that of the outer cladding 31, and the material of the outer ring 23 is selected to have high transmittance in the mid-infrared band.
Specific:
as shown in FIG. 1, the core diameter is 120 μm, and for any one of the 7 composite rings 21, the deposited material of the outer ring 23 is arsenic trisulfide (As 2 S 3 ) Glass having a diameter of 60.1 μm and a deposited material thickness of 0.643 μm; the material of the inner ring 22 is the same quartz material as the outer cladding 31, and has a diameter of 60 μm and a thickness of 0.1 μm. The parameters such as wall thickness and pitch of the hollow anti-resonance fiber need to satisfy the anti-resonance condition. As long as the hollow anti-resonance optical fiber is used as an optical fiber in the parameter range required by anti-resonance reflection, the optical leakage can be coherently and destructively restrained through the anti-resonance principle and the design of the optical fiber, so that the loss of the optical fiber is reduced.
The present invention is that example 1 combines a plurality of materials, a plurality of concentric composite rings 21 spaced apart from each other, and a core medium having a lower refractive index than any thin-walled material, which results in the following technical effects: the overlapping degree of the optical field and the quartz material is obviously reduced, and the absorption loss of the optical fiber in the mid-infrared band is reduced.
As shown in FIG. 2, at the wavelength of 4 μm, the transmission loss is as low as 0.022dB/m, and compared with the pure quartz optical fiber with the same structure, the performance is greatly improved.
The key point of the invention is the additional deposition layer and its design, and the material of the deposition layer is arsenic trisulfide (As 2 S 3 ) Glass or borosilicate glass and the like can reduce the overlapping degree of an optical field and quartz to a certain extent, so that the absorption of the optical fiber to laser energy is reduced; in the case of unchanged optical fiber structural parameters, the deposited layer materials are chosen to differ in low loss performance.
As shown in fig. 3, for the hollow fiber made of composite materials with different thicknesses of the deposited layers, the difference of the thicknesses reduces the overlapping area of the optical field and quartz, and the refractive index of the whole microstructure cladding has a regulating effect, so that the resonance peak of the hollow fiber is shifted. The thicknesses of quartz walls corresponding to the composite hollow fiber with different deposition layer thicknesses are also different, and the purpose of the composite hollow fiber is to fix the first-order resonance peak to be 3 mu m so as to realize low-loss transmission at the 4 mu m wave band.
Furthermore, the composite concentric rings in fig. 1 are 7, and alternative 6 concentric rings or other numbers are also contemplated. In principle, the number is recommended to be 3 or more.
As shown in fig. 4, for the composite hollow fiber with different deposited layer materials, the materials are mainly selected according to the light guide band and the application environment, and besides the light transmittance of different materials in a specific band, the difference of refractive indexes also causes the difference of regulating and controlling the integral resonance peak. FIG. 4 shows the loss spectrum of a different optical material at a first order resonance peak of 3 μm, compared to a similar structure of quartz fiber. Wherein, the thickness of quartz wall in the microstructure cladding of the composite hollow fiber made of different materials is fixed at 0.4 μm, and the difference of the structural parameters is only reflected on the thickness of the deposition layer.
It is also not critical as to whether the shape of the minimum individual cells of the microstructured cladding is circular or nested, since the additional deposited layer material reduces the overlap of the optical field with the quartz, whether circular or nested. The microstructural cladding minimum structural element shape differs only in the low-loss performance difference, with the remaining structural parameters unchanged.
Example 2:
as shown in fig. 5, in order to further satisfy the transmission requirement of the high-power mid-infrared laser, on the basis of embodiment 1, uniformly distributed heat dissipation holes 32 are added in the outer cladding 31, and the diameter of the heat dissipation holes in the outer cladding is 2 μm, and the number of the heat dissipation holes is 12.
Example 3:
as shown in fig. 6, the difference between the embodiment 3 and the embodiment 1 is that the composite material ring adopts a nested tube structure, the radial section of the nested tube is two tangent and nested circles, the diameter of the quartz ring closer to the outer layer structure is 30 μm, the diameter of the quartz ring closer to the fiber core is 60 μm, and the deposited layer material is adhered on the outer sides of the two circles; wherein the thickness of the quartz wall is 0.1 μm and the thickness of the deposited layer material is 0.643 μm.
Example 4:
as shown in fig. 7, in order to further satisfy the transmission requirement of the high-power mid-infrared laser, on the basis of example 3, uniformly distributed heat dissipating holes 32 were added in the outer cladding 31, and the diameter of the heat dissipating holes in the outer cladding was 2 μm, and the number was 12.
Example 5:
as shown in fig. 8, the difference between embodiment 3 and embodiment 1 is that the composite ring has a one-piece tube structure whose radial cross section is formed by a semicircular ring with a thin plate in the middle. The radius of the part of the quartz ring close to the fiber core is 14 mu m, the radius of the part of the quartz ring close to the outer cladding is 16 mu m, and the deposited layer material is attached to the outer side of the quartz wall; wherein the thickness of the quartz wall is 0.1 μm and the thickness of the deposited layer material is 0.643 μm.
Example 6:
as shown in fig. 9, in order to further satisfy the transmission requirement of the high-power mid-infrared laser, on the basis of example 5, uniformly distributed heat dissipating holes 32 are added in the outer cladding 31, and the diameter of the heat dissipating holes in the outer cladding is 2 μm, and the number of the heat dissipating holes is 12.
The invention has the advantages that:
1. the composite material hollow anti-resonance fiber of the invention reduces the transmission loss of the mid-infrared band laser by the innovative design of the microstructure cladding while ensuring that the composite material hollow anti-resonance fiber has a plurality of advantages of the traditional hollow anti-resonance fiber, and reduces the absorption of the hollow anti-resonance fiber to light, thereby ensuring that the composite material hollow anti-resonance fiber has low transmission loss and even ultra-low loss transmission less than 0.022dB/m@4 mu m.
2. The composite material rings are not contacted with each other, and the whole structure of the optical fiber is relatively simple;
3. in the application scene of high-power laser transmission, the heat dissipation performance of the optical fiber can be greatly improved by increasing the thickness of the outer cladding and adding the microstructure area for heat dissipation into the outer cladding, so that the deposited layer and the anti-resonance cladding of the optical fiber are prevented from being damaged by heating;
4. the composite material hollow anti-resonance optical fiber has the characteristics of low transmission loss in the middle infrared band, effective single-mode transmission, polarization maintaining, high nonlinear threshold, high damage threshold and the like, and provides an effective solution for the fields of laser transmission, detection, spectrum analysis, trace gas detection and the like.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a low-loss light-conducting composite material hollow anti-resonance optical fiber of mid-infrared band which characterized in that includes: the fiber core region, the microstructure cladding region and the outer cladding region are sequentially arranged from inside to outside;
the microstructure cladding region is composed of a plurality of composite material rings which are spaced from each other and uniformly distributed in the circumferential direction, and the outer cladding region is composed of an outer cladding which covers the microstructure cladding region;
each composite ring comprises an inner ring and an outer ring, the material of the inner ring is the same as that of the outer cladding, and the material of the outer ring is selected from materials with high transmittance in a required wave band.
2. The composite hollow anti-resonance optical fiber according to claim 1, wherein the composite hollow anti-resonance optical fiber guides light based on an anti-resonance reflection optical waveguide principle, and low-loss light guide is realized in different wave bands through a composite ring.
3. The composite hollow-core antiresonant fiber of claim 1, wherein the refractive index of the composite ring is controlled by adjusting the thickness of the material deposited by the outer ring, thereby achieving a control of the resonant peak position.
4. The composite hollow-core antiresonant fiber of claim 1, wherein the composite ring comprises, but is not limited to, one of a torus, a thimble, and a conjoined tube.
5. The composite hollow-core antiresonant fiber of claim 1, wherein the number of composite rings is not less than 3.
6. The composite hollow anti-resonance optical fiber according to claim 1, wherein the outer ring is obtained by depositing a material on the inner ring, and the material of the outer ring is a material with good light transmission performance in a mid-infrared band, including but not limited to one of sulfide, fluoride, diamond and indium selenide.
7. The composite hollow-core antiresonant fiber of claim 1, wherein the refractive index of the core region is lower than the refractive indices of the outer ring, inner ring and outer cladding, and the core medium of the core region is a gas, vacuum or liquid.
8. The composite hollow-core antiresonant fiber of claim 1, wherein single-mode or multimode transmission is achieved by adjusting the dimensional ratio of the composite ring to the core region.
9. The composite hollow-core antiresonant fiber of claim 1, wherein tuning of laser polarization is achieved by the composite ring.
10. The composite hollow-core antiresonant fiber of claim 1, wherein the outer cladding is provided with a plurality of circumferentially spaced and uniformly distributed heat dissipation holes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310481093.3A CN116482798A (en) | 2023-04-28 | 2023-04-28 | Composite material hollow anti-resonance optical fiber with low-loss light guide in mid-infrared band |
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|---|---|---|---|
| CN202310481093.3A CN116482798A (en) | 2023-04-28 | 2023-04-28 | Composite material hollow anti-resonance optical fiber with low-loss light guide in mid-infrared band |
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| CN116482798A true CN116482798A (en) | 2023-07-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116990901A (en) * | 2023-09-27 | 2023-11-03 | 北京精诚恒创科技有限公司 | Low-loss hollow anti-resonance optical fiber with multi-refractive index cladding |
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- 2023-04-28 CN CN202310481093.3A patent/CN116482798A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116990901A (en) * | 2023-09-27 | 2023-11-03 | 北京精诚恒创科技有限公司 | Low-loss hollow anti-resonance optical fiber with multi-refractive index cladding |
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