CN111458790A - Quartz optical fiber bundle - Google Patents
Quartz optical fiber bundle Download PDFInfo
- Publication number
- CN111458790A CN111458790A CN201910059766.XA CN201910059766A CN111458790A CN 111458790 A CN111458790 A CN 111458790A CN 201910059766 A CN201910059766 A CN 201910059766A CN 111458790 A CN111458790 A CN 111458790A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- fiber bundle
- bare
- quartz
- filling layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 239000013307 optical fiber Substances 0.000 title claims abstract description 41
- 239000010453 quartz Substances 0.000 title claims abstract description 30
- 239000000835 fiber Substances 0.000 claims abstract description 40
- 239000011347 resin Substances 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 239000000377 silicon dioxide Substances 0.000 claims description 20
- 239000002131 composite material Substances 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 238000005253 cladding Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 abstract description 6
- 238000010168 coupling process Methods 0.000 abstract description 6
- 238000005859 coupling reaction Methods 0.000 abstract description 6
- 238000005286 illumination Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 2
- 239000013308 plastic optical fiber Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000005350 fused silica glass Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
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
- G02B6/04—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
- G02B6/06—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres the relative position of the fibres being the same at both ends, e.g. for transporting images
-
- 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
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/441—Optical cables built up from sub-bundles
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The invention discloses a quartz optical fiber bundle, which comprises a plurality of bare fibers, a quartz filling layer and a resin layer, wherein one bare fiber is taken as a center, the rest bare fibers are tightly arranged around the center, the bare fibers are tightly arranged to form the bare fiber bundle, the quartz filling layer and the resin layer are sequentially arranged on the bare fiber bundle from inside to outside, the quartz filling layer is formed after a quartz tube is fused, the quartz optical fibers are directly fused and bundled to replace a single optical fiber, and the diameter of the end surface of the fused optical fiber bundle is far larger than the core diameter of the single optical fiber, so that the effective receiving area is increased, sunlight is more easily coupled into the optical fiber, and the sunlight coupling efficiency is improved.
Description
Technical Field
The invention relates to the technical field of optical fiber illumination, in particular to a quartz optical fiber bundle.
Background
The sunlight collecting and illuminating device is characterized in that natural sunlight is focused and collected through an optical collecting system and then transmitted to indoor or underground places needing sunlight by using a light guide optical fiber on the premise of not carrying out energy conversion of heat, electricity, machinery and the like, and the illuminating mode harmoniously and uniformly integrates the concepts of green illumination, ecological illumination, natural illumination, healthy illumination and the like, thereby being a novel illuminating product.
In order to realize the optimal coupling of the sunlight focusing light spot and the optical fiber, the optical fiber with the largest diameter is selected as much as possible. The traditional optical fiber for solar optical coupling is a large-core-diameter plastic optical fiber, has high loss and can only meet the illumination requirement in a short distance. And the working temperature of the plastic optical fiber is low, so that the problems of failure and the like caused by local burning are easy to occur. And the quartz optical fiber has low transmission loss, can transmit in a long distance, has high damage threshold value and does not have the problem of burning failure. However, the technology of the tension wire is limited, the maximum core diameter of the domestic quartz optical fiber for transmitting light is 1.25mm at present, and the coupling efficiency of big sunlight is limited.
Disclosure of Invention
The invention aims to provide a quartz optical fiber bundle, which solves the problem of efficiency of coupling sunlight into an optical fiber.
In order to solve the above technical problems, an embodiment of the present invention provides a silica fiber bundle, including a plurality of bare fibers, a silica filling layer, and a resin layer, wherein one bare fiber is used as a center, the other bare fibers are tightly arranged around the center, the plurality of bare fibers are tightly arranged to form a bare fiber bundle, the silica filling layer and the resin layer are sequentially disposed on the bare fiber bundle from inside to outside, and the silica filling layer is formed by melting a silica tube.
Embodiments of the present invention also provide an optical cable comprising a plurality of sets of silica fiber bundles as described above.
Compared with the prior art, the embodiment of the invention directly fuses the plurality of quartz optical fibers into a bundle to replace a single optical fiber, and the diameter of the end surface of the fused optical fiber bundle is far larger than the diameter of the core of the single optical fiber, so that the effective receiving area is increased, sunlight is more easily coupled into the optical fiber, and the sunlight coupling efficiency is improved.
The number of the bare fibers was 7, and the cross section of each bare fiber was a regular hexagon.
The bare fiber had a core diameter of 600m, a clad layer of 630m, and a coating of 750m, and an NA of 0.37.
In addition, the quartz filling layer has a refractive index of 1.42-1.48 and a thickness of 0.25-0.55 mm.
In addition, the outer surface of the resin layer is provided with an aluminum-plastic composite belt, and the section of the aluminum-plastic composite belt is wavy.
In addition, the annular wall thickness formed by the aluminum-plastic composite belt is 1 mm-2 mm.
Drawings
FIG. 1 is a cross-sectional view of a silica optical fiber bundle according to a first embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.
A first embodiment of the present invention relates to a silica optical fiber bundle, as shown in fig. 1, the silica optical fiber bundle includes a plurality of bare fibers 1, a silica filling layer 2, and a resin layer 3, wherein one bare fiber 1 is used as a center, the other bare fibers 1 are closely arranged around the center, the plurality of bare fibers 1 are closely arranged to form a bare fiber bundle, the silica filling layer 2 and the resin layer 3 are sequentially disposed from inside to outside of the bare fiber bundle, and the silica filling layer 2 is formed by fusing a silica tube.
In a preferred embodiment, the number of bare fibers 1 is 7, the cross section of the bare fiber 1 is a regular hexagon, the core diameter of the bare fiber 1 is 600m, the cladding layer 630m is 750m, and NA is 0.37.
Specifically, one end of 7 bare fibers 1 arranged in line was inserted into a 15mm long quartz tube having a melting point lower than that of the cladding of the optical fiber, and then placed in an oxyhydrogen flame apparatus to be fused at a high temperature, and the quartz tube was softened to form a quartz filling layer 2 because the melting point of the quartz tube was lower than that of the optical fiber, so that the optical fiber was contracted inside the quartz tube by the contraction force of the fusion of the quartz tube. The resin layer 3 of 0.37 is coated on the outer side of the quartz tube, which is more favorable for light transmission. And finally, grinding, polishing and cabling the end face of the optical fiber bundle. The end face diameter of the fused fiber bundle is much larger than the diameter of a single fiber. Therefore, sunlight can be more easily coupled into the fused silica optical fiber bundle after passing through the collecting device, and the emergent end of the optical fiber bundle is matched with the optical fiber lamp to distribute light to an area needing the light.
Specifically, the refractive index of the quartz filling layer 2 is 1.42-1.48, and the thickness is 0.25-0.55 mm.
As a preferred embodiment, the outer surface of the resin layer 3 is provided with an aluminum-plastic composite tape 4, the section of the aluminum-plastic composite tape 4 is in a wave shape, specifically, the quartz optical fiber bundle has a sufficient ventilation space due to the wave-shaped aluminum-plastic composite tape 4, and the quartz optical fiber bundle has a radial gap due to the wave shape, so that the fire retardant effect is good.
Specifically, the annular wall thickness formed by the aluminum-plastic composite belt 4 is 1 mm-2 mm.
A second embodiment of the invention relates to an optical cable comprising several groups of silica fiber bundles as described in the first embodiment.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (7)
1. The utility model provides a quartz fiber bundle, its characterized in that, includes a plurality of bare fibers, quartz filling layer and resin layer, wherein, uses one bare fiber is the center, and all the other many bare fiber centers on the center is closely arranged, a plurality of bare fiber closely arranges and constitutes a bare fiber bundle, bare fiber bundle from inside to outside sets gradually quartz filling layer and the resin layer, the quartz filling layer forms after the quartz tube melting.
2. The silica optical fiber bundle according to claim 1, wherein the number of the bare fibers is 7, and the cross section of the bare fiber is a regular hexagon.
3. The silica optical fiber bundle according to claim 1, wherein the bare fiber has a core diameter of 600m, a cladding of 630m, a coating of 750m, and an NA of 0.37.
4. The silica optical fiber bundle according to claim 1, wherein the silica filling layer has a refractive index of 1.42 to 1.48 and a thickness of 0.25 to 0.55 mm.
5. The silica optical fiber bundle according to any one of claims 1 to 4, wherein an aluminum-plastic composite tape is disposed on an outer surface of the resin layer, and a cross section of the aluminum-plastic composite tape is wavy.
6. The quartz optical fiber bundle of claim 5, wherein the aluminum-plastic composite tape forms an annular wall thickness of 1mm to 2 mm.
7. An optical cable comprising a plurality of sets of silica optical fiber bundles according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910059766.XA CN111458790A (en) | 2019-01-22 | 2019-01-22 | Quartz optical fiber bundle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910059766.XA CN111458790A (en) | 2019-01-22 | 2019-01-22 | Quartz optical fiber bundle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111458790A true CN111458790A (en) | 2020-07-28 |
Family
ID=71676398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910059766.XA Pending CN111458790A (en) | 2019-01-22 | 2019-01-22 | Quartz optical fiber bundle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111458790A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891951A (en) * | 2014-09-30 | 2016-08-24 | 中国兵器装备研究院 | Modularized manufacturing method of multi-core beam combiner |
| CN209496166U (en) * | 2019-01-22 | 2019-10-15 | 北京首量科技股份有限公司 | Silica fibre beam and optical cable |
-
2019
- 2019-01-22 CN CN201910059766.XA patent/CN111458790A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891951A (en) * | 2014-09-30 | 2016-08-24 | 中国兵器装备研究院 | Modularized manufacturing method of multi-core beam combiner |
| CN209496166U (en) * | 2019-01-22 | 2019-10-15 | 北京首量科技股份有限公司 | Silica fibre beam and optical cable |
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