CN106525776A - Surface plasma resonance hydrogen sensor on basis of optical fibers with mismatched fiber cores - Google Patents
Surface plasma resonance hydrogen sensor on basis of optical fibers with mismatched fiber cores Download PDFInfo
- Publication number
- CN106525776A CN106525776A CN201611173915.8A CN201611173915A CN106525776A CN 106525776 A CN106525776 A CN 106525776A CN 201611173915 A CN201611173915 A CN 201611173915A CN 106525776 A CN106525776 A CN 106525776A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- film
- mode optical
- surface plasma
- hydrogen
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/55—Specular reflectivity
- G01N21/552—Attenuated total reflection
- G01N21/553—Attenuated total reflection and using surface plasmons
Abstract
The invention discloses a surface plasma resonance hydrogen sensor on the basis of optical fibers with mismatched fiber cores. The surface plasma resonance hydrogen sensor comprises a white light source, the first multi-mode optical fiber, a single-mode optical fiber, the second multi-mode optical fibers, a sensor, a gold film, a Ta2O5 film, a Pd film and a spectrometer. Light beams with the wavelengths of 400-1800 nm are emitted by the white light source and are transmitted into the first multi-mode optical fiber via transmission optical fibers, a large quantity of light can be transmitted into coating portions of the single mode optical fiber when light continues to advance onto interfaces of the first multi-mode optical fiber and the single mode optical fiber owing to mismatching of the fiber cores of the multi-mode optical fiber and the single mode optical fiber, the gold film is plated on the surface of the single mode optical fiber, SPR (surface plasma resonance) effects of gold can be stimulated by the light which is transmitted into coatings, and SPR wavelengths can be tuned by the Ta2O5 film to obtain long wavelengths; the Pd film is used as a sensitive base plate for detecting hydrogen and the spectrometer is used for detecting variation of SPR signals. As shown by experimental results, the SPR wavelengths are varied by 28 nm when the concentration of the hydrogen is changed and reaches 4% from the original 0%, and accordingly explosion of the hydrogen can be prevented as long as the variable quantities of the resonance wavelengths in actually measured spectra are lower than 28 nm.
Description
The invention belongs to technical field of optical fiber sensing, and in particular to a kind of surface plasma that optical fiber is mismatched based on fibre core
Resonance body hydrogen gas sensor technical field.
Background technology
At present, hydrogen has had been applied in many fields as a kind of new clean energy resource, for example propellant and
Metallurgy also has other various industrial process.On the other hand, due to the inflammable volatile characteristic of hydrogen so that its storage is stranded very much
It is difficult.Hydrogen concentration at room temperature has just reached LEL when being about 4%, it is therefore desirable to a kind of quickly and reliable
Hydrogen gas sensor detecting to the leakage of hydrogen.
Fibre Optical Sensor possesses good ability to work in explosive atmosphere, therefore, sensing equipment should be used it as very
It is promising.Most of Optical Fider Hybrogen Sensors use palladium (Pd) as sensitive material, because Pd can detect hydrogen.When Pd absorbs hydrogen
When, the dielectric constant of Pd there occurs change, and this change is reversible and nonlinear.Surface plasma body resonant vibration (SPR) light
Learn sensor to possess with high sensitivity, the advantage of real-time and quick detection.Therefore, hydrogen detection is carried out using SPR technique, can be with
Realize quick and high-sensitive hydrogen sensor.
The content of the invention
For the deficiencies in the prior art, it is an object of the invention to provide a kind of surface that optical fiber is mismatched based on fibre core etc.
Ion resonance body hydrogen gas sensor, realizes the inspection to hydrogen explosion by the changed wavelength at the formant of observation spectrum
Survey, the structure is easily achieved.
The present invention is achieved through the following technical solutions：A kind of surface plasma body resonant vibration hydrogen that optical fiber is mismatched based on fibre core
Gas sensor, by white light source (1), the first multimode fibre (2), single-mode fiber (3), the second multimode fibre (4), sensor (5),
Golden film (6), Ta2O5Film (7), Pd films (8), spectrometer (9) composition, it is characterised in that：White light source (1) and the first multimode fibre
(2) left end is connected with Transmission Fibers, the first multimode fibre (2) right-hand member and single-mode fiber (3) left end welding under heat sealing machine, single mode
Optical fiber (3) right-hand member and (4) the left end welding under heat sealing machine of the second multimode fibre, the second multimode fibre (4) right-hand member pass through transmission light
Fibre is connected with spectrometer (9).
The core diameter of described the first multimode fibre (2) is 50um, and cladding diameter is 125um.
The core diameter of described the second multimode fibre (4) is 50um, and cladding diameter is 125um.
The core diameter of described single-mode fiber (3) is 3um, and cladding diameter is 125um, and length is 15mm.
Described sensor (5) is constituted with a single-mode fiber (3), and surface uniformly plates golden film (6), and the thickness of film is
25nm, uniformly plates outward Ta in golden film (6)2O5Film (7), the thickness of film is 60nm, in Ta2O5Film (7) uniformly plates outward Pd films
(8), the thickness of film is 5nm.
Described spectrometer (9) model Si720.
The present invention operation principle be：The light beam of white light source (1) launch wavelength 400nm～1800nm is through Transmission Fibers
Into the first multimode fibre (2), when on the interface that light continues proceed to the first multimode fibre (2) and single-mode fiber (3), by
Mismatch in the fibre core of multimode fibre and single-mode fiber, have substantial amounts of light to enter the clad section of single-mode fiber, due to single-mode optics
Fine surface is coated with golden film (6), and the light into covering will excite the SPR effects of gold, Ta2O5Film (7) by SPR resonant wavelengths be tuned to
Higher wavelength, Pd films (8) serve as the sensitive substrate of hydrogen detection, and spectrometer (9) detects the change of spr signal, experimental result
It is that, when density of hydrogen changes to 4% from 0%, the resonant wavelength of SPR changes 28nm, therefore in actually measured spectrum only
Want the knots modification of resonant wavelength that blast would not occur less than 28nm hydrogen, the knots modification for observing resonant wavelength comes to hydrogen gas leakage
Degree carries out early warning.
The invention has the beneficial effects as follows：A kind of realistic plan is provided for Optical Fider Hybrogen Sensor, by observation
The knots modification of resonant wavelength is early warning is carried out to hydrogen gas leakage, simple, convenient and reliable.
Description of the drawings
Fig. 1 is a kind of system diagram of the surface plasma body resonant vibration hydrogen gas sensor that optical fiber is mismatched based on fibre core.
Fig. 2 is a kind of transmitted light spectrogram of the surface plasma body resonant vibration hydrogen gas sensor that optical fiber is mismatched based on fibre core.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Referring to accompanying drawing 1, a kind of surface plasma body resonant vibration hydrogen gas sensor that optical fiber is mismatched based on fibre core, by white light light
Source (1), the first multimode fibre (2), single-mode fiber (3), the second multimode fibre (4), sensor (5), golden film (6), Ta2O5Film
(7), Pd films (8), spectrometer (9) composition, it is characterised in that：White light source (1) and the first multimode fibre (2) left end transmission light
It is fine to be connected, the first multimode fibre (2) right-hand member and single-mode fiber (3) left end welding under heat sealing machine, single-mode fiber (3) right-hand member and the
(4) the left end welding under heat sealing machine of two multimode fibres, the second multimode fibre (4) right-hand member pass through Transmission Fibers and spectrometer (9) phase
Even；The core diameter of the first multimode fibre (2) is 50um, and cladding diameter is 125um；The core diameter of the second multimode fibre (4)
For 50um, cladding diameter is 125um；The core diameter of single-mode fiber (3) is 3um, and cladding diameter is 125um, and length is 15mm；
Sensor (5) is constituted with a single-mode fiber (3), and surface uniformly plates golden film (6), and the thickness of film is 25nm, in golden film (6) outward
Ta is plated uniformly2O5Film (7), the thickness of film is 60nm, in Ta2O5Film (7) uniformly plates outward Pd films (8), and the thickness of film is 5nm；
Spectrometer (9) model Si720.
The present invention operation principle be：The light beam of white light source (1) launch wavelength 400nm～1800nm is through Transmission Fibers
Into the first multimode fibre (2), when on the interface that light continues proceed to the first multimode fibre (2) and single-mode fiber (3), by
Mismatch in the fibre core of multimode fibre and single-mode fiber, have substantial amounts of light to enter the clad section of single-mode fiber, due to single-mode optics
Fine surface is coated with golden film (6), and the light into covering will excite the SPR effects of gold, Ta2O5Film (7) by SPR resonant wavelengths be tuned to
Higher wavelength, Pd films (8) serve as the sensitive substrate of hydrogen detection, and spectrometer (9) detects the change of spr signal, experimental result
It is that, when density of hydrogen changes to 4% from 0%, the resonant wavelength of SPR changes 28nm, therefore in actually measured spectrum only
Want the knots modification of resonant wavelength that blast would not occur less than 28nm hydrogen, the knots modification for observing resonant wavelength comes to hydrogen gas leakage
Degree carries out early warning.
Claims (6)
1. it is a kind of based on fibre core mismatch optical fiber surface plasma body resonant vibration hydrogen gas sensor, by white light source (1), more than first
Mode fiber (2), single-mode fiber (3), the second multimode fibre (4), sensor (5), golden film (6), Ta2O5Film (7), Pd films (8), light
Spectrometer (9) is constituted, it is characterised in that：White light source (1) is connected with Transmission Fibers with the first multimode fibre (2) left end, more than first
Mode fiber (2) right-hand member and single-mode fiber (3) left end welding under heat sealing machine, single-mode fiber (3) right-hand member and the second multimode fibre (4)
Left end welding under heat sealing machine, the second multimode fibre (4) right-hand member are connected with spectrometer (9) by Transmission Fibers.
2. it is according to claim 1 it is a kind of based on fibre core mismatch optical fiber surface plasma body resonant vibration hydrogen gas sensor,
It is characterized in that：The core diameter of described the first multimode fibre (2) is 50um, and cladding diameter is 125um.
3. it is according to claim 1 it is a kind of based on fibre core mismatch optical fiber surface plasma body resonant vibration hydrogen gas sensor,
It is characterized in that：The core diameter of described the second multimode fibre (4) is 50um, and cladding diameter is 125um.
4. it is according to claim 1 it is a kind of based on fibre core mismatch optical fiber surface plasma body resonant vibration hydrogen gas sensor,
It is characterized in that：The core diameter of described single-mode fiber (3) is 3um, and cladding diameter is 125um, and length is 15mm.
5. it is according to claim 1 it is a kind of based on fibre core mismatch optical fiber surface plasma body resonant vibration hydrogen gas sensor,
It is characterized in that：Described sensor (5) is constituted with a single-mode fiber (3), and surface uniformly plates golden film (6), the thickness of film
For 25nm, Ta is uniformly plated outward in golden film (6)2O5Film (7), the thickness of film is 60nm, in Ta2O5Film (7) uniformly plates outward Pd films
(8), the thickness of film is 5nm.
6. it is according to claim 1 it is a kind of based on fibre core mismatch optical fiber surface plasma body resonant vibration hydrogen gas sensor,
It is characterized in that：Described spectrometer (9) model Si720.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611173915.8A CN106525776A (en) | 2016-12-14 | 2016-12-14 | Surface plasma resonance hydrogen sensor on basis of optical fibers with mismatched fiber cores |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611173915.8A CN106525776A (en) | 2016-12-14 | 2016-12-14 | Surface plasma resonance hydrogen sensor on basis of optical fibers with mismatched fiber cores |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106525776A true CN106525776A (en) | 2017-03-22 |
Family
ID=58340292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611173915.8A Pending CN106525776A (en) | 2016-12-14 | 2016-12-14 | Surface plasma resonance hydrogen sensor on basis of optical fibers with mismatched fiber cores |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106525776A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414474A (en) * | 2018-03-30 | 2018-08-17 | 南京信息工程大学 | A kind of SPR fibre optical sensors and preparation method thereof based on temperature self-compensation |
| CN108955774A (en) * | 2018-09-05 | 2018-12-07 | 东北大学 | Reflection-type optical fibre sensor for seawater salinity and temperature simultaneously measuring |
| CN109187440A (en) * | 2018-08-06 | 2019-01-11 | 天津大学 | Single mode-based on mode excitation lacks mould/multimode fibre spr sensor |
| CN111122456A (en) * | 2019-12-25 | 2020-05-08 | 桂林电子科技大学 | Dislocation heterostructure optical fiber surface plasma resonance sensor |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080158563A1 (en) * | 2006-08-21 | 2008-07-03 | Pierre Simon Joseph Berini | Sensors |
| CN101451959A (en) * | 2008-12-30 | 2009-06-10 | 清华大学 | Hydrogen sensor and pd film hydrogen sensing system |
| WO2009154216A1 (en) * | 2008-06-20 | 2009-12-23 | 国立大学法人横浜国立大学 | Distributed optical-fiber hydrogen sensor, distributed optical-fiber hydrogen sensor for multipoint observation, hydrogen-sensitive film, and process for producing the same |
| JP2014059300A (en) * | 2012-08-24 | 2014-04-03 | Soka Univ | Hydrogen sensor, and detector using the same |
| CN103994985A (en) * | 2014-06-12 | 2014-08-20 | 潘国新 | Optical fiber hydrogen sensor and manufacturing method thereof |
| CN105115939A (en) * | 2015-07-28 | 2015-12-02 | 重庆大学 | Tapered multimode interference-based high-sensitivity optical fiber methane sensing device |
| JP2016133491A (en) * | 2015-01-22 | 2016-07-25 | オリエントブレイン株式会社 | Gas detection device |
| CN206270245U (en) * | 2016-12-14 | 2017-06-20 | 中国计量大学 | A kind of surface plasma body resonant vibration hydrogen gas sensor that optical fiber is mismatched based on fibre core |
-
2016
- 2016-12-14 CN CN201611173915.8A patent/CN106525776A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080158563A1 (en) * | 2006-08-21 | 2008-07-03 | Pierre Simon Joseph Berini | Sensors |
| WO2009154216A1 (en) * | 2008-06-20 | 2009-12-23 | 国立大学法人横浜国立大学 | Distributed optical-fiber hydrogen sensor, distributed optical-fiber hydrogen sensor for multipoint observation, hydrogen-sensitive film, and process for producing the same |
| CN101451959A (en) * | 2008-12-30 | 2009-06-10 | 清华大学 | Hydrogen sensor and pd film hydrogen sensing system |
| JP2014059300A (en) * | 2012-08-24 | 2014-04-03 | Soka Univ | Hydrogen sensor, and detector using the same |
| CN103994985A (en) * | 2014-06-12 | 2014-08-20 | 潘国新 | Optical fiber hydrogen sensor and manufacturing method thereof |
| JP2016133491A (en) * | 2015-01-22 | 2016-07-25 | オリエントブレイン株式会社 | Gas detection device |
| CN105115939A (en) * | 2015-07-28 | 2015-12-02 | 重庆大学 | Tapered multimode interference-based high-sensitivity optical fiber methane sensing device |
| CN206270245U (en) * | 2016-12-14 | 2017-06-20 | 中国计量大学 | A kind of surface plasma body resonant vibration hydrogen gas sensor that optical fiber is mismatched based on fibre core |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414474A (en) * | 2018-03-30 | 2018-08-17 | 南京信息工程大学 | A kind of SPR fibre optical sensors and preparation method thereof based on temperature self-compensation |
| CN109187440A (en) * | 2018-08-06 | 2019-01-11 | 天津大学 | Single mode-based on mode excitation lacks mould/multimode fibre spr sensor |
| CN108955774A (en) * | 2018-09-05 | 2018-12-07 | 东北大学 | Reflection-type optical fibre sensor for seawater salinity and temperature simultaneously measuring |
| CN111122456A (en) * | 2019-12-25 | 2020-05-08 | 桂林电子科技大学 | Dislocation heterostructure optical fiber surface plasma resonance sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Rifat et al. | A novel photonic crystal fiber biosensor using surface plasmon resonance | |
| CN106525776A (en) | Surface plasma resonance hydrogen sensor on basis of optical fibers with mismatched fiber cores | |
| CN205691490U (en) | A kind of cascade connection type FPI hydrogen gas sensor based on cursor effect | |
| US20090103851A1 (en) | Surface plasmon resonance fiber sensor | |
| CN105911025B (en) | A kind of distribution helical-core fiber surface plasma resonance sensor and its measurement method | |
| CN101979963A (en) | Integrally molded fiber microsensor and manufacturing method thereof | |
| CN105092536A (en) | Multimode-single- fiber surface plasma mode structured optical resonance sensor and detection method thereof | |
| CN102095719A (en) | Optical fiber type sensor system based on surface plasma resonance and stimulated Raman scattering | |
| CN206270245U (en) | A kind of surface plasma body resonant vibration hydrogen gas sensor that optical fiber is mismatched based on fibre core | |
| CN106052912A (en) | Optical fiber stress sensing device based on Fabry-Perot microcavity structure | |
| CN104596992A (en) | Maximally tilted fiber bragg grating SPR (Surface Plasmon Resonance) biochemical sensor and manufacture method thereof | |
| CN106052727A (en) | Senor device based on fiber miniature Fabry-Perot cavity | |
| CN103344277A (en) | Fabry-Perot sensor capable of simultaneously detecting double parameters and detection device | |
| Yan et al. | A fast response hydrogen sensor with Pd metallic grating onto a fiber's end-face | |
| CN207318351U (en) | Solution concentration detection system based on SPR sensor | |
| CN105758827A (en) | Protein detection fiber optic sensor based on TFBG-SPR | |
| CN102175645B (en) | Polarized light detection-based highly-sensitive photonic crystal fiber refractive index sensor | |
| CN108180840B (en) | A kind of optical fiber micro-displacement sensing and means for correcting and method | |
| CN105911026B (en) | A kind of end reflection type helical-core fiber surface plasma resonance sensor | |
| JP2015232522A (en) | Optical fiber sensor device | |
| CN111928880B (en) | Mach-Zehnder interference optical fiber based on surface plasma effect and sensor thereof | |
| Liyun et al. | Optical fiber sensor determination of the water salinity based on surface plasmon resonance | |
| CN206074429U (en) | It is a kind of to be based on photonic crystal resonant cavity technology multichannel optoacoustic spectroscopy intensifier | |
| CN104034698A (en) | Portable replaceable optical fiber SPR sensor probe | |
| CN110823808B (en) | Tapered side-polished optical fiber biosensor and method for preparing tapered side-polished optical fiber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |