CN106199824A - Optical fiber - Google Patents
Optical fiber Download PDFInfo
- Publication number
- CN106199824A CN106199824A CN201610777550.3A CN201610777550A CN106199824A CN 106199824 A CN106199824 A CN 106199824A CN 201610777550 A CN201610777550 A CN 201610777550A CN 106199824 A CN106199824 A CN 106199824A
- Authority
- CN
- China
- Prior art keywords
- covering
- optical fiber
- refractive index
- fibre core
- microballon
- 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
- 239000013307 optical fiber Substances 0.000 title claims abstract description 32
- 239000000835 fiber Substances 0.000 claims abstract description 33
- 239000011521 glass Substances 0.000 claims abstract description 12
- 229920000642 polymer Polymers 0.000 claims abstract description 9
- 239000013078 crystal Substances 0.000 claims abstract description 7
- 239000002923 metal particle Substances 0.000 claims abstract description 7
- 238000005253 cladding Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 229920005479 Lucite® Polymers 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical group [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 3
- 239000002861 polymer material Substances 0.000 claims description 2
- 239000004215 Carbon black (E152) Substances 0.000 claims 1
- 229910052731 fluorine Inorganic materials 0.000 claims 1
- 239000011737 fluorine Substances 0.000 claims 1
- -1 fluorine alkene Hydrocarbon Chemical class 0.000 claims 1
- 229930195733 hydrocarbon Natural products 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 230000003287 optical effect Effects 0.000 description 8
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium dioxide Chemical compound O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229940119177 germanium dioxide Drugs 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000001069 Raman spectroscopy Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000000149 penetrating effect Effects 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
- G02B6/02052—Optical fibres with cladding with or without a coating comprising optical elements other than gratings, e.g. filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
-
- 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
- G02B6/03633—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 arranged - -
Abstract
The present invention and a kind of optical fiber, it is characterised in that: include fibre core, covering, in described covering, be mounted with luminous reflectance source, the refractive index more than covering of the refractive index of described fibre core；Described luminous reflectance source is external diameter bubble in 0.1 micron to 1000 micrometer ranges, glass microballoon, crystal microballon, transparent polymer microballon or metal particle.The optical fiber structure of the present invention is simple, low cost, purposes are wide, can be used for realizing the purpose of distributed or quasi-distributed monitoring sensing, has preferable market prospect.
Description
Technical field
The present invention relates to a kind of optical fiber.
Background technology
Based on traditional optic fibre characteristic, existing distribution type optical fiber sensing equipment mainly has Raman temperature sensing device and cloth
In deep pool scattering sensing device, but both distributed sensing device prices are higher, limit its popularization in Practical Project and make
With.
Summary of the invention
The present invention provides a kind of optical fiber, by disposing reflection sources in the covering of optical fiber, utilizes existing optical time domain reflection to fill
Put and can be formed by distributed monitoring device.This optical fiber has easy to use, low cost, has preferable application prospect.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
A kind of optical fiber, it is characterised in that: include fibre core, covering, in described covering, be mounted with luminous reflectance source, described fibre
The refractive index more than covering of the refractive index of core.
Described luminous reflectance source is that external diameter bubble in 0.1 micron to 1000 micrometer ranges, glass microballoon, crystal are micro-
Pearl, transparent polymer microballon or metal particle.
Transparent polymer microballon is lucite or transparent fluoroolefins material.
The refractive index of described glass microballoon, crystal microballon or transparent polymer microballon is with described cladding index not
With.
Described metal particle is Argent grain or alumina particles.
In described covering, the region away from fibre core and covering separating surface no more than 5 microns does not has luminous reflectance source.
Also having one layer of inner cladding between described fibre core and covering, the refractive index of described inner cladding is less than fibre core, is more than
The refractive index of covering.
The refractive index of described inner cladding and cladding index differences are not more than 0.1%.
Described fibre core and the material of inner cladding are silica-based glasses sills, and described covering is transparent polymer material
Material.
Silica-based glasses material can be silica glass material, or is added with the quartz glass of the additives such as germanium dioxide
Material.
Also having one layer of surrounding layer outside described covering, described cladding index is more than cladding refractive index.
The present invention compared with prior art has the advantage that
1, when optical signal transmits in a fiber, main energetic is distributed in fibre core, but still has a small amount of optical signal to be distributed in bag
In layer, owing to being mounted with luminous reflectance source in fibre cladding, then this optical signal is reflected back fibre core by luminous reflectance source, and at optical fiber
This optical signal can be detected in end, when this optical fiber state changes, such as case of bending, then the most permissible in the end of optical fiber
Monitor the change of optical signal, and according to the optical signal changed and the interval of incident optical signal time, it may be determined that the position of change,
Reach the purpose of distributed or quasi-distributed monitoring sensing.
2, in described covering, it is not more than the region of 5 microns away from fibre core and covering separating surface and does not adulterate active fluoro
Material, only under the conditions of bending, micro-bend or fibre strain etc., incident illumination just has and is partly coupled in covering, in covering
These incident illuminations are reflected and couple such as fibre core by the luminous reflectance source disposed, then the incidence end at optical fiber can detect light letter
Number change, thus realize distributed or quasi-distributed monitoring sensing purpose.
In sum, the optical fiber structure of the present invention is simple, low cost, purposes are wide, can be used for realizing distributed or quasi-distribution
The purpose of formula monitoring sensing, has preferable market prospect.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is present configuration schematic diagram.
1-fibre core；2-covering；3-surrounding layer；The cladding regions of reflection sources that 4-is unglazed；5-luminous reflectance source.
Detailed description of the invention
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1, Fig. 2 schematically show the structure of the XXXX of one embodiment of the present invention.
A kind of optical fiber as shown in Figure 1 and Figure 2, including fibre core 1, covering 2, is mounted with luminous reflectance source 5 in described covering 2,
The refractive index more than covering 2 of the refractive index of described fibre core 1.The lightwave signal overwhelming majority incident in optical fiber is in fibre core 1
Transmission, but have a small amount of lightwave signal and transmit in covering 2, the light wave entering covering 2 is anti-by the luminous reflectance source 5 in covering 2
After penetrating, and having and partially reflective be optically coupled into transmission in fibre core 1, the detector that this reflection light can be installed in optic fibre end obtains
Take；Optical fiber one is in when changing under external physical quantity effect, as optical fiber is bent, then and luminous reflectance source 5 shape at this optical fiber
State also changes, and such as change in location, makes the lightwave signal change of luminous reflectance source 5 reflection at this, is then positioned at the spy of optical fiber end
Survey device and be achieved with the reflecting light signal with measured physical quantity information, according to incident light wave and reflecting light and the pass of time
System, it is possible to know the position of measured physical quantity, reaches the purpose of distributed or quasi-distributed monitoring sensing.
Preferably, described luminous reflectance source 5 be external diameter bubble in 0.1 micron to 1000 micrometer ranges, glass microballoon,
Crystal microballon, transparent polymer microballon or metal particle.
Preferably, macromolecular material can be the material such as lucite, transparent fluoroolefins.
Preferably, the refractive index of described glass microballoon, crystal microballon or transparent polymer microballon and described covering 2 folding
Penetrate rate different.
Preferably, described metal particle is Argent grain or alumina particles.
Preferably, silica-based glasses material can be silica glass material, or is added with the additives such as germanium dioxide
Silica glass material.
Preferably, at the described outer also one layer of surrounding layer 3 of covering 2, described covering 2 refractive index is more than surrounding layer 3 folding
Penetrate rate.
As in figure 2 it is shown, in the present embodiment, described covering 2, be not more than 5 microns away from fibre core 1 and covering 2 separating surface
Region be the cladding regions 4 of unglazed reflection sources.So, only under the conditions of optical fiber is in bending, micro-bend or deformation etc., incident
Light just has and is partly coupled in covering 2 and is reflected by luminous reflectance source 5 and be coupled into fibre core, then be positioned at the detection of optical fiber end
Device is achieved with the reflecting light signal with measured physical quantity information, according to incident light wave and reflecting light and the pass of time
System, it is possible to know the position of measured physical quantity, reaches the purpose of distributed or quasi-distributed monitoring sensing.
Preferably, the cladding regions 4 of described unglazed reflection sources is inner cladding, and inner cladding is located at described fibre core 1 He
Between covering 2, the refractive index of described inner cladding is less than fibre core 1, refractive index more than covering 2.Inner cladding does not disposes luminous reflectance
Source 5.
Preferably, the refractive index of described inner cladding and covering 2 refractive index difference are not more than 0.1%.
Preferably, described fibre core 1 and the material of inner cladding are silica-based glasses sills, and described covering 2 is transparent
Macromolecular material.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, not
On the premise of departing from the invention design, it is also possible to making at least one deformation and improve, these broadly fall into the guarantor of the present invention
Protect scope.
Claims (9)
1. an optical fiber, it is characterised in that: include fibre core, covering, in described covering, be mounted with luminous reflectance source, described fibre core
The refractive index more than covering of refractive index.
Optical fiber the most according to claim 1, it is characterised in that: described luminous reflectance source is that external diameter is at 0.1 micron to 1000
Bubble, glass microballoon, crystal microballon, transparent polymer microballon or metal particle in micrometer range.
Optical fiber the most according to claim 1, it is characterised in that: transparent polymer microballon is lucite or transparent fluorine alkene
Hydrocarbon material.
Optical fiber the most according to claim 2, it is characterised in that: described glass microballoon, crystal microballon or transparent polymer
The refractive index of microballon is different from described cladding index.
Optical fiber the most according to claim 1, it is characterised in that: described metal particle is Argent grain or alumina particles.
Optical fiber the most according to claim 1, it is characterised in that: it is not more than away from fibre core and covering separating surface in described covering
The region of 5 microns does not has luminous reflectance source.
Optical fiber the most according to claim 1, it is characterised in that: also have one layer of inner cladding, institute between described fibre core and covering
The refractive index of the inner cladding stated is less than fibre core, refractive index more than covering.
Optical fiber the most according to claim 7, it is characterised in that: the refractive index of described inner cladding and cladding index differences
It is not more than 0.1%.
Optical fiber the most according to claim 7, it is characterised in that: described fibre core and the material of inner cladding are silica-based glasses
Sill, described covering is transparent polymer material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610777550.3A CN106199824A (en) | 2016-08-30 | 2016-08-30 | Optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610777550.3A CN106199824A (en) | 2016-08-30 | 2016-08-30 | Optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106199824A true CN106199824A (en) | 2016-12-07 |
Family
ID=58086790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610777550.3A Pending CN106199824A (en) | 2016-08-30 | 2016-08-30 | Optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106199824A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107608020A (en) * | 2017-10-11 | 2018-01-19 | 佛山杰致信息科技有限公司 | The preparation method of polymer photon crystal fiber |
| CN110231677A (en) * | 2019-06-06 | 2019-09-13 | 中国建筑材料科学研究总院有限公司 | Microlens array and preparation method thereof |
| CN111707206A (en) * | 2020-06-04 | 2020-09-25 | 哈尔滨工程大学 | Quantum dot optical fiber micro-bending sensor with position detection function |
| CN114288017A (en) * | 2021-12-31 | 2022-04-08 | 华科精准（北京）医疗科技有限公司 | Treatment optical fiber and laser thermotherapy system comprising same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123406A (en) * | 2011-11-18 | 2013-05-29 | 西安金和光学科技有限公司 | Optical fiber |
-
2016
- 2016-08-30 CN CN201610777550.3A patent/CN106199824A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123406A (en) * | 2011-11-18 | 2013-05-29 | 西安金和光学科技有限公司 | Optical fiber |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107608020A (en) * | 2017-10-11 | 2018-01-19 | 佛山杰致信息科技有限公司 | The preparation method of polymer photon crystal fiber |
| CN110231677A (en) * | 2019-06-06 | 2019-09-13 | 中国建筑材料科学研究总院有限公司 | Microlens array and preparation method thereof |
| CN110231677B (en) * | 2019-06-06 | 2020-12-18 | 中国建筑材料科学研究总院有限公司 | Microlens array and method for manufacturing the same |
| CN111707206A (en) * | 2020-06-04 | 2020-09-25 | 哈尔滨工程大学 | Quantum dot optical fiber micro-bending sensor with position detection function |
| CN114288017A (en) * | 2021-12-31 | 2022-04-08 | 华科精准（北京）医疗科技有限公司 | Treatment optical fiber and laser thermotherapy system comprising same |
| CN114288017B (en) * | 2021-12-31 | 2024-02-02 | 华科精准（北京）医疗科技有限公司 | Treatment optical fiber and laser thermal therapy system comprising same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161207 |