CN108761649A - A kind of micro- FP chambers of online light fluid based on suspension core fibre - Google Patents
A kind of micro- FP chambers of online light fluid based on suspension core fibre Download PDFInfo
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- CN108761649A CN108761649A CN201810274923.4A CN201810274923A CN108761649A CN 108761649 A CN108761649 A CN 108761649A CN 201810274923 A CN201810274923 A CN 201810274923A CN 108761649 A CN108761649 A CN 108761649A
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- core fibre
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Classifications
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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
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
- G02B6/29361—Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
-
- 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
- G02B6/24—Coupling light guides
- G02B6/25—Preparing the ends of light guides for coupling, e.g. cutting
-
- 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
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/262—Optical details of coupling light into, or out of, or between fibre ends, e.g. special fibre end shapes or associated optical elements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The present invention relates to online optical fiber light fluid micro- FP chambers fields.The micro- FP chambers of a kind of online light fluid based on suspension core fibre, by quartz capillary（2）, be welded on quartz capillary（2）The single mode optical fiber of left end（1）, be welded on quartz capillary（2）The suspension core fibre of right end（3）Composition, single mode optical fiber（1）, quartz capillary（2）, suspension core fibre（3）Axial line overlaps.The present invention has many advantages, such as that manufacture craft is simple, at low cost, contrast is high, response is fast, mechanical strength is good, temperature-insensitive, high temperature resistant.
Description
Technical field
The present invention relates to online optical fiber light fluid micro- FP chambers fields.
Background technology
Be integrated with optics and Microfluidics light stream body technique have in the fields such as bio-measurement and chemical analysis it is huge
Application prospect becomes structure micromation, integrated, high analyte ability biochemical analysis equipment one of mainstream technology.
Traditional light fluid FP（Fabry-Pérot）Chamber is by the separate types such as lens, light source, beam splitter optical component and has
The device of microfluidic channel, and the encapsulation technology specially designed is combined to constitute, there are bulky, unstable, easy for this kind of system
The shortcomings of affected by environment.The online micro- FP chambers of optical fiber light fluid can be effectively prevented from the above problem, realize light fluid FP chambers
Be miniaturized, integration, effectively improve the stability of light fluid FP chambers, become optofluidic device future the main direction of development
One of.
It has been reported that the preparation methods of the micro- FP chambers of online optical fiber light fluid include mainly：Femtosecond laser, 157nm swash
Light, photoetching, grinding and focused ion beam etc., the instrument and equipment used in these methods is very expensive, while needing to coordinate high-precision
The fine motion control system of degree, substantially increases the complexity of manufacture craft, while it is micro- to also improve online optical fiber light fluid
The cost of FP chambers, and then limit the practicalization of the micro- FP chambers of online optical fiber light fluid.
Invention content
The technical problem to be solved by the present invention is to：How the cost of online optical fiber light fluid micro- FP chamber is reduced.
The technical solution adopted in the present invention is：The micro- FP chambers of a kind of online light fluid based on suspension core fibre, by stone
English capillary（2）, be welded on quartz capillary（2）The single mode optical fiber of left end（1）, be welded on quartz capillary（2）Right end hangs
Floating core fibre（3）Composition, single mode optical fiber（1）, quartz capillary（2）, suspension core fibre（3）Axial line overlaps.
As a kind of preferred embodiment：The fibre core of suspension core fibre is silica, suspension core fibre（3）Covering be have six
The stomata covering of a large scale airport.
As a kind of preferred embodiment：Single mode optical fiber（1）Fibre core outer diameter be less than quartz capillary（2）Internal diameter, suspension core
Optical fiber（3）Stomata（7）Outer diameter is less than quartz capillary（2）Internal diameter.
As a kind of preferred embodiment：Single mode optical fiber（1）With quartz capillary（2）Welding surface formed first reflecting surface
（5）, quartz capillary（2）With suspension core fibre（3）Welding surface formed second reflecting surface（6）, it is between two reflectings surface
Interference cavity.
As a kind of preferred embodiment：To prevent its reflected light from generating modulation to the reflectance spectrum of interference cavity, to suspension core fibre
（3）Right side be ground, make suspension core fibre（3）Right side and suspension core fibre（3）Axial line at 80-85 degree press from both sides
Angle.
As a kind of preferred embodiment：A length of 10-100 μm of the chamber of interference cavity, suspension core fibre（3）Length be 5-50 μm.
The beneficial effects of the invention are as follows：The present invention is with manufacture craft is simple, at low cost, contrast is high, response is fast, machinery
The advantages that intensity is good, temperature-insensitive, high temperature resistant.The preparation of the present invention only needs the conventional fibers such as heat sealing machine and cutter to handle
Equipment does not need the expensive equipments such as femtosecond laser, focused ion beam and high-precision fine motion control system, therefore prepared by the device
Technique is very simple, and processing cost is low；Meanwhile the reflecting surface that heat sealing machine welding procedure is formed is than reflection that the equipment such as femtosecond are formed
Face is more smooth, is conducive to obtain higher contrast and resolution ratio；In addition, the large scale stomata of suspension core fibre can be effective
Improve the response speed of sensor in ground.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the suspension core fibre structural schematic diagram that the present invention uses；
Fig. 3 is the measurement system diagram of micro- FP chambers in the present invention；
Fig. 4 is the reflectance spectrum of micro- FP chambers in the present invention；
Wherein, 1, single mode optical fiber, 2, quartz capillary, 3, suspension core fibre, 4, the fibre core of single mode optical fiber.5, first reflection
Face, 6, second reflectings surface, 7, suspension core fibre stomata.
Specific implementation mode
The present invention proposes a kind of micro- FP chambers of the online light fluid based on suspension core fibre, by general single mode fiber 1, stone
English capillary 2 and suspension core fibre 3 are constituted, and structural schematic diagram is as shown in Figure 1；Wherein there are 6 in the covering of suspension core fibre 3
Large scale stomata, as shown in Fig. 2, 6 large scale stomatas surround suspension core fibre stomata 7；One end of general single mode fiber 1 and quartz
One end of capillary 2 is welded, and wherein the internal diameter of quartz capillary 2 is more than the diameter of the fibre core 4 of general single mode fiber；Quartzy capillary
The other end of pipe 2 is welded with one end of suspension core fibre 3, and wherein the internal diameter of quartz capillary 2 is more than the stomata of suspension core fibre 3
Outer diameter；The other end of suspension core fibre 3 is by tilting grinding or roughening treatment, making the right side of suspension core fibre 3 and hanging
The axial line of floating core fibre 3 is at 82 degree of angles；The right side of general single mode fiber 1 forms the first reflecting surface 5, suspension core fibre 3
The left side of fibre core form the second reflecting surface 6, constitute micro- FP chambers between two reflectings surface；Light is from a left side for general single mode fiber 1
It holds into FP chambers in a subtle way, the reflected light by measuring general single mode fiber 1 obtains the reflectance spectrum of micro- FP chambers, and then to micro- FP intracavitary light
Interaction with fluid carries out real-time dynamic monitoring.
Operation principle：The micro- FP chambers of the online light fluid based on suspension core fibre of the present invention are inserted into fluid to be measured
In, the light that fluid enters interference cavity and intracavitary by suspension core fibre stomata 7 interacts, by observing micro- FP cavity reflections spectrum
Variation, may be implemented the real-time monitoring of light and fluid interaction process.Its reflective light intensity is：
Wherein：I1And I2For the reflective light intensity of two reflectings surface, L is that chamber is long, and λ is lambda1-wavelength, nanIt is the folding of fluid to be measured
Penetrate rate.
The experiment test of the micro- FP chambers of the online light fluid based on suspension core fibre based on suspension core fibre of the present invention
System is shown in Fig. 3, including spectrometer, wideband light source and fiber coupler etc..
Fig. 4 is the reflectance spectrum of micro- FP chambers in the present invention, and chamber length is respectively the reflection interference spectrum of 46 μm and 94 μm of micro- FP chambers,
The contrast of micro- FP chambers of a length of 46 μm of its lumen is up to 28dB.
The invention also provides the following preferred parameter plans of establishment：The length of the quartz capillary 2 of micro- FP chambers is
10-100 μm, the length of suspension core fibre 3 is 5-50 μm.
Claims (6)
1. a kind of micro- FP chambers of online light fluid based on suspension core fibre, it is characterised in that：By quartz capillary（2）, welding
In quartz capillary（2）The single mode optical fiber of left end（1）, be welded on quartz capillary（2）The suspension core fibre of right end（3）Composition,
Single mode optical fiber（1）, quartz capillary（2）, suspension core fibre（3）Axial line overlaps.
2. the micro- FP chambers of a kind of online light fluid based on suspension core fibre belonging to claim 1, it is characterised in that：It is outstanding
The fibre core of floating core fibre is silica, suspension core fibre（3）Covering be there are six large scale airport stomata covering.
3. the micro- FP chambers of a kind of online light fluid based on suspension core fibre belonging to claim 2, it is characterised in that：It is single
Mode fiber（1）Fibre core outer diameter be less than quartz capillary（2）Internal diameter, suspension core fibre（3）Stomata（7）Outer diameter is less than quartz wool
Tubule（2）Internal diameter.
4. the micro- FP chambers of a kind of online light fluid based on suspension core fibre belonging to claim 1, it is characterised in that：It is single
Mode fiber（1）With quartz capillary（2）Welding surface formed first reflecting surface（5）, quartz capillary（2）With suspension core fibre
（3）Welding surface formed second reflecting surface（6）, it is interference cavity between two reflectings surface.
5. the micro- FP chambers of a kind of online light fluid based on suspension core fibre belonging to claim 4, it is characterised in that：For
Prevent its reflected light from generating modulation to the reflectance spectrum of interference cavity, to suspension core fibre（3）Right side be ground, make suspension core
Optical fiber（3）Right side and suspension core fibre（3）Axial line at 80-85 degree angles.
6. the micro- FP chambers of a kind of online light fluid based on suspension core fibre belonging to claim 4, it is characterised in that：It is dry
Relate to a length of 10-100 μm of the chamber of chamber, suspension core fibre（3）Length be 5-50 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810274923.4A CN108761649A (en) | 2018-03-30 | 2018-03-30 | A kind of micro- FP chambers of online light fluid based on suspension core fibre |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810274923.4A CN108761649A (en) | 2018-03-30 | 2018-03-30 | A kind of micro- FP chambers of online light fluid based on suspension core fibre |
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| CN108761649A true CN108761649A (en) | 2018-11-06 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110967791A (en) * | 2019-11-29 | 2020-04-07 | 哈尔滨工程大学 | Hole-assisted dual-core optical fiber mode converter based on cone |
| CN112629744A (en) * | 2020-12-03 | 2021-04-09 | 国网黑龙江省电力有限公司电力科学研究院 | Atmospheric pressure sensor based on cascade fiber Fabry-Perot interferometer |
| CN112629743A (en) * | 2020-12-03 | 2021-04-09 | 国网黑龙江省电力有限公司电力科学研究院 | Air pressure sensor based on optical fiber double-cavity vernier effect sensitization |
| CN113465771A (en) * | 2021-06-02 | 2021-10-01 | 哈尔滨工业大学 | Optical fiber temperature sensing device based on vernier effect |
| WO2022160822A1 (en) * | 2021-01-26 | 2022-08-04 | 广东海洋大学 | High-sensitivity high-temperature sensor based on suspended optical fiber dislocation fusion splicing |
| CN115790923A (en) * | 2022-10-25 | 2023-03-14 | 西北大学 | Fabry-Perot interference type all-fiber pressure sensor based on cantilever structure sensitization |
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| CN102374874A (en) * | 2011-09-20 | 2012-03-14 | 重庆大学 | Quartz capillary tube embedded all-silica fiber Fabry-Perot interferometric sensor and manufacturing method thereof |
| US20150377765A1 (en) * | 2014-06-30 | 2015-12-31 | Baker Hughes Incorporated | Systems and devices for sensing corrosion and deposition for oil and gas applications |
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| CN102374874A (en) * | 2011-09-20 | 2012-03-14 | 重庆大学 | Quartz capillary tube embedded all-silica fiber Fabry-Perot interferometric sensor and manufacturing method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110967791A (en) * | 2019-11-29 | 2020-04-07 | 哈尔滨工程大学 | Hole-assisted dual-core optical fiber mode converter based on cone |
| CN110967791B (en) * | 2019-11-29 | 2021-04-06 | 哈尔滨工程大学 | Hole-assisted dual-core optical fiber mode converter based on cone |
| CN112629744A (en) * | 2020-12-03 | 2021-04-09 | 国网黑龙江省电力有限公司电力科学研究院 | Atmospheric pressure sensor based on cascade fiber Fabry-Perot interferometer |
| CN112629743A (en) * | 2020-12-03 | 2021-04-09 | 国网黑龙江省电力有限公司电力科学研究院 | Air pressure sensor based on optical fiber double-cavity vernier effect sensitization |
| WO2022160822A1 (en) * | 2021-01-26 | 2022-08-04 | 广东海洋大学 | High-sensitivity high-temperature sensor based on suspended optical fiber dislocation fusion splicing |
| CN113465771A (en) * | 2021-06-02 | 2021-10-01 | 哈尔滨工业大学 | Optical fiber temperature sensing device based on vernier effect |
| CN115790923A (en) * | 2022-10-25 | 2023-03-14 | 西北大学 | Fabry-Perot interference type all-fiber pressure sensor based on cantilever structure sensitization |
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Application publication date: 20181106 |
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