CN109031517A - A kind of rectangle hollow optical fiber - Google Patents
A kind of rectangle hollow optical fiber Download PDFInfo
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- CN109031517A CN109031517A CN201811248362.7A CN201811248362A CN109031517A CN 109031517 A CN109031517 A CN 109031517A CN 201811248362 A CN201811248362 A CN 201811248362A CN 109031517 A CN109031517 A CN 109031517A
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- medium tube
- ring medium
- tube
- optical fiber
- wall
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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
- G02B6/036—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
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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
- 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)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The present invention provides a kind of rectangle hollow optical fiber, 4 region of fibre core of cladding regions and low-refraction including high refractive index, and the cladding regions are made of first kind straight-flanked ring medium tube, the second class rectangle ring medium tube and third class rectangle ring medium tube；The outer wall of the outermost layer medium tube of the first kind straight-flanked ring medium tube provides a part of boundary for the fibre core, the inner wall of the innermost layer medium tube of second class rectangle ring medium tube provides another part boundary for the fibre core, and third class rectangle ring medium tube is distributed in outermost layer；The first kind straight-flanked ring medium tube, the second class rectangle ring medium tube and third class rectangle ring medium tube are successively nested from inside to outside；The region that the inner wall of the innermost layer medium tube of the outer wall of the outermost layer medium tube of the first rectangular like type ring medium tube and the second rectangular like type ring medium tube surrounds is the core region.Fiber mode provided by the invention is distributed in empty fibre core, be can effectively reduce the material absorption loss of optical fiber, is improved the damage threshold of optical fiber.
Description
Technical field
The present invention relates to fiber optic communication field more particularly to a kind of rectangle hollow optical fiber.
Background technique
With flourishing for Global Internet, people propose increasingly higher demands to the information transmission technology, thus
Cause light transmission capacity crisis.Hollow optic fibre is expected to become ideal transmission line, and light field is mainly distributed on empty fibre core
In, overcome fibre loss, dispersion and in terms of have greater advantage.
By the development of many years, hollow optic fibre has developed into hollow photon band-gap optical fiber and two kinds of antiresonant type hollow optic fibre
Type.Hollow Bragg optical fiber is one kind of hollow photon band-gap optical fiber, overlapping by hollow core area and high low-index layer
Period coaxial configuration covering is constituted, and the loss of optical fiber reduces, usual covering as the medium number of plies in fibre cladding increases
Middle high low-index layer is made of real medium.Two kinds of overlapping media in Bragg fiber reflector have high refractive index
Difference helps to obtain wide low-loss bandwidth [Steven G. Johnson, et al., " Low-loss
asymptotically single-mode propagation inlarge-coreOmniGuide fibers,”Opt.
Express, 2001, 9(13), 748–779].AlirezaHassani et al. [AlirezaHassani, et al.,
“Porous polymer fibers for low-lossTerahertz guiding,”Opt. Express, 2008, 16
(9), 6340-6351] it proposes and supports and connect dielectric layer reflecting mirror as connecting bridge using sub-wavelength dielectric cylinder come real
Existing Bragg optical fiber, however dielectric cylinder causes the appearance of more cladding modes, the low-loss bandwidth of optical fiber is restricted.It is negative
Curvature antiresonance hollow optic fibre [F. Yu, et al. " Low loss silica hollow core fibers for 3-4
μm spectral region, " Optics Express, 2012,20 (10), 11153-11158] node can be arranged
In the place apart from fibre core as far as possible, to weaken influence of the node to optical fiber property.
In the prior art, have by the way that thin-walled layer is added in the capillary of fibre cladding or does support member using capillary
To increase fibre cladding to reduce fibre loss, as the Chinese invention patent application of Publication No. CN107797175A discloses
" a kind of hollow antiresonance optical fiber of multi-resonant layer ", which includes the core region of low-refraction and the clad region of high refractive index
Domain, the cladding regions of the high refractive index include inner cladding region and urrounding layer region, and the urrounding layer region coats inner cladding region
Domain and core region, the inner cladding region include the first antiresonance layer and the second antiresonance layer, and the first antiresonance layer
Core region is surrounded with the second antiresonance layer；The first antiresonance layer includes several layers microcapillary, second antiresonance
Layer supports the first antiresonance layer.But the technology will increase the node in fibre cladding, so as to cause excessive cladding mode,
It needs accurately to adjust in fiber preparation to avoid the influence of cladding mode at node.
Therefore, it needs to research and develop one kind by increasing dielectric layer to drop low-loss hollow optic fibre.
Summary of the invention
In order to solve the above technical problems, first aspect present invention provides a kind of rectangle hollow optical fiber, the optical fiber includes
The cladding regions of high refractive index and the core region of low-refraction, the cladding regions are by first kind straight-flanked ring medium tube, second
Class rectangle ring medium tube and third class rectangle ring medium tube composition；The outermost layer medium tube of the first kind straight-flanked ring medium tube
Outer wall provides a part of boundary for the fibre core, and the inner wall of the innermost layer medium tube of the second class rectangle ring medium tube is described
Fibre core provides another part boundary, and the third class rectangle ring medium tube is distributed in outermost layer；The first kind straight-flanked ring medium
Pipe, the second class rectangle ring medium tube and the third class rectangle ring medium tube are successively nested from inside to outside；The first kind
The inner wall of the innermost layer medium tube of the outer wall of the outermost layer medium tube of square type ring medium tube and the second rectangular like type ring medium tube
The region of encirclement is the core region.
Wherein, the tube wall in the one of direction of first kind straight-flanked ring medium tube all falls within the third class rectangle ring and is situated between
On the tube wall of matter pipe.
Wherein, the tube wall in the one of direction of the second class rectangle ring medium tube all falls within the third class rectangle ring and is situated between
On the tube wall of matter pipe.
Wherein, the tube wall in the second class rectangle ring medium tube two of them direction all falls within the third class rectangle ring and is situated between
On the tube wall of matter pipe.
Wherein, the first kind straight-flanked ring medium tube, the second class rectangle ring medium tube and the third class rectangle ring
The cross section of medium tube is rectangle.
Wherein, the material of the cladding regions is any one in silica, soft glass or plastics.
Wherein, the core region is using one or two or more kinds of gas fillings.
Wherein, the core region is vacuum.
Wherein, the number of the first rectangular like type ring medium tube is 2,3,4,5,6,7,8,9,10.
Wherein, the number of the second rectangular like type ring medium tube is 2,3,4,5,6,7,8,9,10.
Beneficial effects of the present invention:
A kind of rectangle hollow optical fiber provided by the invention, fiber mode are only distributed in empty fibre core, can effectively reduce optical fiber
Material absorption loss improves the damage threshold of optical fiber.Optical fiber can pass through the layer of the increase first kind and the second rectangular like type ring medium tube
Number increases the reflecting layer to light, to increase the constraint ability of light, reduction mode leakage losses.Fiber Node apart from fibre core away from
From that can be adjusted by increasing the size of the first rectangular like type medium tube, can be reduced at core mode and node by increasing this distance
The coupling of cladding mode, to reduce influence of the cladding mode to core mode at node.It adjusts between fibre cladding middle layer and layer
Away from the high-order mode and covering mode coupling that can make in fibre core, increase fibre core high-order mode loss, to realize single mode transport.Fiber core
For rectangle, convenient for breaking symmetry, to realize high birefringence hollow optic fibre.
Detailed description of the invention
It, below will be simple to needing attached drawing to be used to make in embodiment in order to illustrate more clearly of technical solution of the present invention
Singly introduce, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, corresponds to the general of this field
For logical technical staff, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram for the rectangle hollow optical fiber that the embodiment of the present invention 1 provides；
Fig. 2 is the structural schematic diagram for the rectangle hollow optical fiber that the embodiment of the present invention 2 provides；
Title corresponding to appended drawing reference in attached drawing are as follows: 1- the first rectangular like type ring medium tube, 2- the second rectangular like type ring medium tube, 3-
Third rectangular like type ring medium tube, 4- fibre core.
Specific embodiment
It is the preferred embodiment of the present invention below, it is noted that for those skilled in the art,
Various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as this hair
Bright protection scope.
Embodiment 1
The present invention provides a kind of rectangle hollow optical fiber, as shown in Figure 1, the optical fiber includes the cladding regions of high refractive index and low
4 region of fibre core of refractive index, the cladding regions are by first kind straight-flanked ring medium tube 1, the second class rectangle ring medium tube 2 and third
Class rectangle ring medium tube 3 forms；The outer wall of the outermost layer medium tube of the first kind straight-flanked ring medium tube 1 is that the fibre core 4 mentions
For a part of boundary, the inner wall of the innermost layer medium tube of the second class rectangle ring medium tube 2 is that the fibre core 4 provides another portion
Divide boundary, the third class rectangle ring medium tube 3 is distributed in outermost layer；The first kind straight-flanked ring medium tube 1, second class
Straight-flanked ring medium tube 2 and the third class rectangle ring medium tube 3 are successively nested from inside to outside；The first rectangular like type ring medium tube
The region that the inner wall of the innermost layer medium tube of the outer wall of 1 outermost layer medium tube and the second rectangular like type ring medium tube 2 surrounds
For 4 region of fibre core.
The tube wall in the one of direction of the first kind straight-flanked ring medium tube 1 all falls within the third class rectangle ring medium tube
On 3 tube wall, the second class rectangle ring medium tube 2 and the tube wall of 1 same direction of first kind straight-flanked ring medium tube are fallen
On the tube wall of the third class rectangle ring medium tube 3；The first kind straight-flanked ring medium tube 1, the second class rectangle ring are situated between
The cross section of matter pipe 2 and the third class rectangle ring medium tube 3 is rectangle；The material of the cladding regions is silica,
4 region of fibre core is filled using air, and the number of the first rectangular like type ring medium tube 1 is 3, and the second rectangular like type ring is situated between
The number of matter pipe 2 is 3.
Embodiment 2
The present invention provides a kind of rectangle hollow optical fiber, as shown in Fig. 2, the optical fiber includes the cladding regions of high refractive index and low
4 region of fibre core of refractive index, the cladding regions are by first kind straight-flanked ring medium tube 1, the second class rectangle ring medium tube 2 and third
Class rectangle ring medium tube 3 forms；The outer wall of the outermost layer medium tube of the first kind straight-flanked ring medium tube 1 is that the fibre core 4 mentions
For a part of boundary, the inner wall of the innermost layer medium tube of the second class rectangle ring medium tube 2 is that the fibre core 4 provides another portion
Divide boundary, the third class rectangle ring medium tube 3 is distributed in outermost layer；The first kind straight-flanked ring medium tube 1, second class
Straight-flanked ring medium tube 2 and the third class rectangle ring medium tube 3 are successively nested from inside to outside；The first rectangular like type ring medium tube
The region that the inner wall of the innermost layer medium tube of the outer wall of 1 outermost layer medium tube and the second rectangular like type ring medium tube 2 surrounds
For 4 region of fibre core.
The tube wall in the one of direction of the first kind straight-flanked ring medium tube 1 all falls within the third class rectangle ring medium tube
On 3 tube wall, the tube wall of the opposite both direction of the second class rectangle ring medium tube 2 all falls within the third class rectangle ring medium
On the tube wall of pipe 3, the second class rectangle ring medium tube 2 is opposite with the region that the third class rectangle ring medium tube 3 is surrounded to be set
The first kind straight-flanked ring medium tube 1 there are two setting；The first kind straight-flanked ring medium tube 1, the second class rectangle ring medium
The cross section of pipe 2 and the third class rectangle ring medium tube 3 is rectangle；The material of the cladding regions is silica, institute
It states 4 region of fibre core to fill using vacuum, the number of the first rectangular like type ring medium tube 1 is 3, the second rectangular like type ring medium
The number of pipe 2 is 3.
Embodiment 3
The present invention provides a kind of rectangle hollow optical fiber, the optical fiber includes the cladding regions of high refractive index and the fibre of low-refraction
4 region of core, the cladding regions are situated between by first kind straight-flanked ring medium tube 1, the second class rectangle ring medium tube 2 and third class rectangle ring
Matter pipe 3 forms；The outer wall of the outermost layer medium tube of the first kind straight-flanked ring medium tube 1 is that the fibre core 4 provides a part of side
Boundary, the inner wall of the innermost layer medium tube of the second class rectangle ring medium tube 2 are that the fibre core 4 provides another part boundary, institute
It states third class rectangle ring medium tube 3 and is distributed in outermost layer；The first kind straight-flanked ring medium tube 1, the second class rectangle ring are situated between
Matter pipe 2 and the third class rectangle ring medium tube 3 are successively nested from inside to outside；The first rectangular like type ring medium tube 1 it is outermost
The region that the inner wall of the innermost layer medium tube of the outer wall and the second rectangular like type ring medium tube 2 of layer medium tube surrounds is the fibre
4 region of core.
The tube wall in the one of direction of the first kind straight-flanked ring medium tube 1 all falls within the third class rectangle ring medium tube
On 3 tube wall, the second class rectangle ring medium tube 2 and the tube wall of 1 same direction of first kind straight-flanked ring medium tube are fallen
On the tube wall of the third class rectangle ring medium tube 3；The first kind straight-flanked ring medium tube 1, the second class rectangle ring are situated between
The cross section of matter pipe 2 and the third class rectangle ring medium tube 3 is rectangle；The material of the cladding regions is soft glass, institute
It states 4 region of fibre core to fill using vacuum, the number of the first rectangular like type ring medium tube 1 is 5, the second rectangular like type ring medium
The number of pipe 2 is 2.
Embodiment 4
The present invention provides a kind of rectangle hollow optical fiber, the optical fiber includes the cladding regions of high refractive index and the fibre of low-refraction
4 region of core, the cladding regions are situated between by first kind straight-flanked ring medium tube 1, the second class rectangle ring medium tube 2 and third class rectangle ring
Matter pipe 3 forms；The outer wall of the outermost layer medium tube of the first kind straight-flanked ring medium tube 1 is that the fibre core 4 provides a part of side
Boundary, the inner wall of the innermost layer medium tube of the second class rectangle ring medium tube 2 are that the fibre core 4 provides another part boundary, institute
It states third class rectangle ring medium tube 3 and is distributed in outermost layer；The first kind straight-flanked ring medium tube 1, the second class rectangle ring are situated between
Matter pipe 2 and the third class rectangle ring medium tube 3 are successively nested from inside to outside；The first rectangular like type ring medium tube 1 it is outermost
The region that the inner wall of the innermost layer medium tube of the outer wall and the second rectangular like type ring medium tube 2 of layer medium tube surrounds is the fibre
4 region of core.
The tube wall in the one of direction of the first kind straight-flanked ring medium tube 1 all falls within the third class rectangle ring medium tube
On 3 tube wall, the second class rectangle ring medium tube 2 and the tube wall of 1 same direction of first kind straight-flanked ring medium tube are fallen
On the tube wall of the third class rectangle ring medium tube 3；The first kind straight-flanked ring medium tube 1, the second class rectangle ring are situated between
The cross section of matter pipe 2 and the third class rectangle ring medium tube 3 is rectangle；The material of the cladding regions is plastics, described
4 region of fibre core is filled using air, and the number of the first rectangular like type ring medium tube 1 is 4, the second rectangular like type ring medium tube
2 number is 6.
Embodiment 5
The present invention provides a kind of rectangle hollow optical fiber, the optical fiber includes the cladding regions of high refractive index and the fibre of low-refraction
4 region of core, the cladding regions are situated between by first kind straight-flanked ring medium tube 1, the second class rectangle ring medium tube 2 and third class rectangle ring
Matter pipe 3 forms；The outer wall of the outermost layer medium tube of the first kind straight-flanked ring medium tube 1 is that the fibre core 4 provides a part of side
Boundary, the inner wall of the innermost layer medium tube of the second class rectangle ring medium tube 2 are that the fibre core 4 provides another part boundary, institute
It states third class rectangle ring medium tube 3 and is distributed in outermost layer；The first kind straight-flanked ring medium tube 1, the second class rectangle ring are situated between
Matter pipe 2 and the third class rectangle ring medium tube 3 are successively nested from inside to outside；The first rectangular like type ring medium tube 1 it is outermost
The region that the inner wall of the innermost layer medium tube of the outer wall and the second rectangular like type ring medium tube 2 of layer medium tube surrounds is the fibre
4 region of core.
The tube wall in the one of direction of the first kind straight-flanked ring medium tube 1 all falls within the third class rectangle ring medium tube
On 3 tube wall, the tube wall of the opposite both direction of the second class rectangle ring medium tube 2 all falls within the third class rectangle ring medium
On the tube wall of pipe 3, the second class rectangle ring medium tube 2 is opposite with the region that the third class rectangle ring medium tube 3 is surrounded to be set
The first kind straight-flanked ring medium tube 1 there are two setting；The first kind straight-flanked ring medium tube 1, the second class rectangle ring medium
The cross section of pipe 2 and the third class rectangle ring medium tube 3 is rectangle；The material of the cladding regions is soft glass, described
4 region of fibre core is filled using vacuum, and the number of the first rectangular like type ring medium tube 1 is 6, the second rectangular like type ring medium tube
2 number is 3.
Embodiment 6
The present invention provides a kind of rectangle hollow optical fiber, the optical fiber includes the cladding regions of high refractive index and the fibre of low-refraction
4 region of core, the cladding regions are situated between by first kind straight-flanked ring medium tube 1, the second class rectangle ring medium tube 2 and third class rectangle ring
Matter pipe 3 forms；The outer wall of the outermost layer medium tube of the first kind straight-flanked ring medium tube 1 is that the fibre core 4 provides a part of side
Boundary, the inner wall of the innermost layer medium tube of the second class rectangle ring medium tube 2 are that the fibre core 4 provides another part boundary, institute
It states third class rectangle ring medium tube 3 and is distributed in outermost layer；The first kind straight-flanked ring medium tube 1, the second class rectangle ring are situated between
Matter pipe 2 and the third class rectangle ring medium tube 3 are successively nested from inside to outside；The first rectangular like type ring medium tube 1 it is outermost
The region that the inner wall of the innermost layer medium tube of the outer wall and the second rectangular like type ring medium tube 2 of layer medium tube surrounds is the fibre
4 region of core.
The tube wall in the one of direction of the first kind straight-flanked ring medium tube 1 all falls within the third class rectangle ring medium tube
On 3 tube wall, the tube wall of the opposite both direction of the second class rectangle ring medium tube 2 all falls within the third class rectangle ring medium
On the tube wall of pipe 3, the second class rectangle ring medium tube 2 is opposite with the region that the third class rectangle ring medium tube 3 is surrounded to be set
The first kind straight-flanked ring medium tube 1 there are two setting；The first kind straight-flanked ring medium tube 1, the second class rectangle ring medium
The cross section of pipe 2 and the third class rectangle ring medium tube 3 is rectangle；The material of the cladding regions is plastics, the fibre
4 region of core is filled using air, and the number of the first rectangular like type ring medium tube 1 is 4, the second rectangular like type ring medium tube 2
Number be 8.
Only several embodiments of the present invention are expressed for above embodiments, and the description thereof is more specific and detailed, but can not
Therefore limitations on the scope of the patent of the present invention are interpreted as.It should be pointed out that for those of ordinary skill in the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, these are all to belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of rectangle hollow optical fiber, the optical fiber includes the cladding regions of high refractive index and the core region of low-refraction,
Be characterized in that: the cladding regions are situated between by first kind straight-flanked ring medium tube, the second class rectangle ring medium tube and third class rectangle ring
Matter pipe composition；The outer wall of the outermost layer medium tube of the first kind straight-flanked ring medium tube provides a part of boundary for the fibre core,
The inner wall of the innermost layer medium tube of the second class rectangle ring medium tube provides another part boundary, the third for the fibre core
Class rectangle ring medium tube is distributed in outermost layer；The first kind straight-flanked ring medium tube, the second class rectangle ring medium tube and institute
It is successively nested from inside to outside to state third class rectangle ring medium tube；Outside the outermost layer medium tube of the first rectangular like type ring medium tube
The region that the inner wall of the innermost layer medium tube of wall and the second rectangular like type ring medium tube surrounds is the core region.
2. a kind of rectangle hollow optical fiber according to claim 1, it is characterised in that: the first kind straight-flanked ring medium tube its
In the tube wall in a direction all fall on the tube wall of the third class rectangle ring medium tube.
3. a kind of rectangle hollow optical fiber according to claim 2, it is characterised in that: the second class rectangle ring medium tube its
In the tube wall in a direction all fall on the tube wall of the third class rectangle ring medium tube.
4. a kind of rectangle hollow optical fiber according to claim 2, it is characterised in that: the second class rectangle ring medium tube its
The tube wall of middle both direction is all fallen on the tube wall of the third class rectangle ring medium tube.
5. a kind of rectangle hollow optical fiber described in claim according to claim 1 ~ any one of 4, it is characterised in that: institute
The cross section for stating first kind straight-flanked ring medium tube, the second class rectangle ring medium tube and the third class rectangle ring medium tube is equal
For rectangle.
6. a kind of rectangle hollow optical fiber described in claim according to claim 1 ~ any one of 4, it is characterised in that: described
The material of cladding regions is any one in silica, soft glass or plastics.
7. a kind of rectangle hollow optical fiber described in claim according to claim 1 ~ any one of 4, it is characterised in that: described
Core region is using one or two or more kinds of gas fillings.
8. a kind of rectangle hollow optical fiber described in claim according to claim 1 ~ any one of 4, it is characterised in that: described
Core region is vacuum.
9. a kind of rectangle hollow optical fiber described in claim according to claim 1 ~ any one of 4, it is characterised in that: described
The number of first rectangular like type ring medium tube is 2,3,4,5,6,7,8,9,10.
10. a kind of rectangle hollow optical fiber described in claim according to claim 1 ~ any one of 4, it is characterised in that: institute
The number for stating the second rectangular like type ring medium tube is 2,3,4,5,6,7,8,9,10.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811248362.7A CN109031517B (en) | 2018-10-25 | 2018-10-25 | Rectangular hollow optical fiber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811248362.7A CN109031517B (en) | 2018-10-25 | 2018-10-25 | Rectangular hollow optical fiber |
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| CN109031517A true CN109031517A (en) | 2018-12-18 |
| CN109031517B CN109031517B (en) | 2023-06-02 |
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| CN110579836A (en) * | 2019-07-31 | 2019-12-17 | 江西师范大学 | Multi-resonance-layer hollow optical fiber |
| CN112859245A (en) * | 2021-01-15 | 2021-05-28 | 江西师范大学 | Double-core terahertz optical fiber coupler |
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| CN112859245A (en) * | 2021-01-15 | 2021-05-28 | 江西师范大学 | Double-core terahertz optical fiber coupler |
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| Publication number | Publication date |
|---|---|
| CN109031517B (en) | 2023-06-02 |
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