CN102252999A - Optical fiber SPR (Surface Plasmon Resonance) sensor for monitoring methyl orange sewage degradation - Google Patents
Optical fiber SPR (Surface Plasmon Resonance) sensor for monitoring methyl orange sewage degradation Download PDFInfo
- Publication number
- CN102252999A CN102252999A CN2011101128757A CN201110112875A CN102252999A CN 102252999 A CN102252999 A CN 102252999A CN 2011101128757 A CN2011101128757 A CN 2011101128757A CN 201110112875 A CN201110112875 A CN 201110112875A CN 102252999 A CN102252999 A CN 102252999A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- methyl orange
- sensor
- spr
- monitoring
- 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
Images
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses an optical fiber SPR (Surface Plasmon Resonance) sensor for monitoring methyl orange sewage degradation. The system of the optical fiber SPR sensor mainly consists of a bandwidth light source (1), a Y-type coupler (2), an optical fiber probe (3), a spectrum analyzer (4), a USB (Universal Serial Bus) data wire (5) and a computer (6). The optical fiber SPR sensor is characterized in that: the entire sensing optical path is accomplished by only one Y-type coupler, three ports of the Y-type coupler are connected with the optical fiber probe, the spectrum analyzer and the bandwidth light source respectively, and measurement is mainly completed by a multi-mode large-diameter optical fiber probe based on a wavelength modulation-type sensor. Thus, the SPR sensor has higher measurement precision than other sensors and high specificity and sensitivity for methyl orange molecules to be measured without labeling the methyl orange molecules, avoids secondary pollution and has the advantages of being quite simple in operation, convenient for processing, good in movement, etc.
Description
Technical field
The invention belongs to the surface plasma wave sensor technical field, be specially the wavelength-modulated type spr sensor that is used for methyl orange sewage degrading monitoring.
Background technology
Methyl orange is the organic contaminant of a kind of very difficult degradation in the dyeing sewage, is important topic in the field of environment protection to its research of degradation technique always.At present, main utilization is the absorbance of ultraviolet spectrophotometer to degradation process sampling and measuring samples in the degrading monitoring process of methyl orange, thereby calculates the concentration of sample.But such method also is not suitable for being applied in the real-time monitoring, because methyl orange concentration in degradation process is constantly to change, its refractive index also can be followed variation accordingly.Spr sensor relies on to external world the hypersensitivity of the variation of liquid refractivity just can realize methyl orange degradation is monitored this function.Surface plasma-wave resonance (Surface Plasma Resonance, SPR) technology is the interactional technology of analysing biomolecules that is used for that develops rapidly in recent years, its cardinal principle is exactly an application surface plasma resonance effect, promptly a kind of optical phenomena that occurs on metal and the electrolyte interface.The first Application of surface plasma-wave resonance technique will be traced back to the Liedberg of Swede of nineteen eighty-three.The SPR effect is more and more widely used in biochemistry and environmental monitoring especially in recent years.
Optical fiber SPR sensor because have that anti-electromagnetic interference capability is strong, measuring mechanism is simple, the transducing part volume is little, can long-haul telemetry, real-time dynamic monitoring and have very high sensitivity and spr signal is not vulnerable to remarkable advantage such as extraneous factor influence and has been subjected to extensive concern.This sensor is mainly based on phase modulation-type and angular modulation type, and these two kinds of modulation formats are because the complex structure of himself, cost costliness and heavy instrument have been subjected to a lot of restrictions on using.A kind of new modulator approach be wavelength-modulated type spr sensor so develop.This modulator approach is simple to operate, simple in structure, be convenient to move and price very cheap, use on a large scale so be highly suitable in the rugged surroundings.
Summary of the invention
The objective of the invention is to develop a kind of sensor that can monitor the methyl orange degradation process, and will satisfy certain measuring accuracy, can realize real-time dynamic monitoring, and can in rugged surroundings, work.Thereby proposed based on the monitoring of wavelength-modulated type spr sensor system realization to the methyl orange degradation process.
This kind sensing system mainly is made up of wideband light source, Y type coupling mechanism, fibre-optical probe, spectroanalysis instrument, usb data line, computing machine.It is characterized in that: whole sensing light path is only finished by a Y type coupling mechanism, three ports of Y type coupling mechanism are connected with fibre-optical probe, spectroanalysis instrument, wideband light source respectively, measure and mainly finish, and be based on the sensor of wavelength-modulated type by multimode particle size fibre-optical probe.
The present invention is based on wavelength-modulated type SPR sensor-based system to the principle of work of methyl orange degradation monitoring is: at first send light by wideband light source, light passes to sensor probe by Y type coupling mechanism again, at the probe end face reflection takes place then and enters fiber spectrometer through coupling mechanism once more.By fibre optic spectral analyzer light signal is changed into electric signal again and be input in the middle of the computing machine, by computing machine electric signal is changed into digital signal output again.The variation why fibre-optical probe can monitor out extraneous methyl orange molecule concentration is that this metal film under certain condition can drive surface plasma resonance phenomenon because be coated with certain thickness metal film on fibre-optical probe.Extraneous methyl orange molecule is adsorbed onto the metal film outer surface, and when the methyl orange concentration change, its refractive index also can change to some extent.The resonant wavelength that the light that light source sends produces when on metal film and optical fibre interface the SPR effect taking place is just different, common analyzing and processing by spectroanalysis instrument and computing machine just can draw the variation of resonant wavelength, thereby draws the situation of change of extraneous methyl orange concentration.
Why this sensor is selected based on the wavelength-modulated type, be because the whole optical path of wavelength-modulated type spr sensor system realizes full fiberize, so it is simpler with respect to other modulation type spr sensor system operations, and the signal after being handled by spectroanalysis instrument in wavelength-modulated type spr sensor system is spectral signal rather than light intensity signal, spectral signal has better stability comparatively speaking, do not need very complex apparatus yet, so wavelength-modulated type spr sensor has higher precision, this just makes wavelength-modulated type spr sensor be adapted at using in the rugged surroundings, also can promote the use of on a large scale.
The invention has the beneficial effects as follows:
1. this system adopts the sensing light path of full fiberize to make preparation process very simple, required raw material is also very cheap, and is easy to operate in the process of monitoring, can also move anywhere or anytime, can under rugged environment, work, and be fit to promote the use of on a large scale.
2. this system adopts the spr sensor of wavelength-modulated type to make observation process simpler, and the monitoring accuracy also spr sensor of specific strength modulation type increases.
3. utilize native system to go to monitor the degradation process of methyl orange, can realize real time on-line monitoring to the whole process of methyl orange degradation, and not need it is carried out mark, thereby also avoided secondary pollution methyl orange.
Description of drawings:
Fig. 1 is that wavelength-modulated type spr sensor system forms synoptic diagram
Fig. 2 is the fibre-optical probe structural representation
Fig. 3 is the emulation SPR resonance spectrum that obtains in the different refractivity medium
Label title among the above-mentioned figure: 1. wideband light source, 2. Y type coupling mechanism, 3. fibre-optical probe, 4. spectroanalysis instrument, 5. usb data line, 6. computing machine, 7. covering, 8. surface plasma wave, 9. fibre core, 10. metal film, 11. incident raies.
Embodiment
The present invention utilizes the SPR effect that the susceptibility of surrounding medium refractive index is come the methyl orange degradation process is monitored, the advantage of this sensing system be the precision height, simple to operate, simple in structure, can realize real time on-line monitoring, be fit to large-scale promotion and use.
By Fig. 1 and 2 as can be known, the concrete working method of this sensing system is: the light that is sent by wideband light source 1 enters fibre-optical probe through Y type coupling mechanism 2, the SPR effect takes place and produces surface plasma-wave 8 in light 11 on the interface of metal film 10 and extraneous medium (methyl orange solution), spread out of fibre-optical probe and enter Y type coupling mechanism 2 again through reflection repeatedly again, import into after overcoupling then in the spectroanalysis instrument 4, spectroanalysis instrument carries out after the analyzing and processing input again to light and advances in the computing machine and show by specific software again.So promptly realized monitoring to the methyl orange solution degradation process.
The making of fibre-optical probe is after the covering of optical fiber one end is removed, to plate the thick metal film of one deck 50nm 10, deposits the thick metal film of one deck 500nm as micro-reflector at end face then.When light is propagated therein, if the wave vector of the plasma wave of the horizontal wave vector of evanescent wave and metallic film surface is complementary, then can produce the plasma wave-wave resonant effect, make catoptrical light intensity reach minimum constantly, so on spectrometer, just formed a trench after receiving reflected light at this.
Claims (1)
1. optical fiber SPR sensor that is used for methyl orange sewage degrading monitoring, it is characterized in that: total system comprises wideband light source (1), Y type coupling mechanism (2), fibre-optical probe (3), spectroanalysis instrument (4), three ports of Y type coupling mechanism are connected with fibre-optical probe (3), spectroanalysis instrument (4), wideband light source (5) respectively, and spectroanalysis instrument links to each other with computing machine (6) by usb data line (5); Above-mentioned fibre-optical probe is made up of fibre core, metal film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101128757A CN102252999A (en) | 2011-05-04 | 2011-05-04 | Optical fiber SPR (Surface Plasmon Resonance) sensor for monitoring methyl orange sewage degradation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101128757A CN102252999A (en) | 2011-05-04 | 2011-05-04 | Optical fiber SPR (Surface Plasmon Resonance) sensor for monitoring methyl orange sewage degradation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102252999A true CN102252999A (en) | 2011-11-23 |
Family
ID=44980389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101128757A Pending CN102252999A (en) | 2011-05-04 | 2011-05-04 | Optical fiber SPR (Surface Plasmon Resonance) sensor for monitoring methyl orange sewage degradation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102252999A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661933A (en) * | 2012-05-17 | 2012-09-12 | 苏州大学 | Wet steam dryness measuring device and measuring method based on surface plasma resonance |
| CN102692397A (en) * | 2012-06-15 | 2012-09-26 | 重庆绿色智能技术研究院 | Portable optical fiber surface plasmons resonance (SPR) food safety detector |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004117325A (en) * | 2002-09-30 | 2004-04-15 | Osp:Kk | Light reflective sensor and its structure |
| US20040186359A1 (en) * | 2001-07-09 | 2004-09-23 | Beaudoin Stephen P. | Afinity biosensor for monitoring biological process |
| CN101819136A (en) * | 2010-04-23 | 2010-09-01 | 天津大学 | Human glucose concentration continuous monitoring device based on optical fiber surface plasmon resonance |
-
2011
- 2011-05-04 CN CN2011101128757A patent/CN102252999A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040186359A1 (en) * | 2001-07-09 | 2004-09-23 | Beaudoin Stephen P. | Afinity biosensor for monitoring biological process |
| JP2004117325A (en) * | 2002-09-30 | 2004-04-15 | Osp:Kk | Light reflective sensor and its structure |
| CN101819136A (en) * | 2010-04-23 | 2010-09-01 | 天津大学 | Human glucose concentration continuous monitoring device based on optical fiber surface plasmon resonance |
Non-Patent Citations (1)
| Title |
|---|
| 张晓丽等: "《基于光纤SPR光谱分析的污水降解过程监测研究》", 《光谱学与光谱分析》, vol. 30, no. 2, 28 February 2010 (2010-02-28), pages 533 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661933A (en) * | 2012-05-17 | 2012-09-12 | 苏州大学 | Wet steam dryness measuring device and measuring method based on surface plasma resonance |
| CN102661933B (en) * | 2012-05-17 | 2014-11-05 | 苏州大学 | Wet steam dryness measuring device and measuring method based on surface plasma resonance |
| CN102692397A (en) * | 2012-06-15 | 2012-09-26 | 重庆绿色智能技术研究院 | Portable optical fiber surface plasmons resonance (SPR) food safety detector |
| CN102692397B (en) * | 2012-06-15 | 2015-02-04 | 重庆绿色智能技术研究院 | Portable optical fiber surface plasmons resonance (SPR) food safety detector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203824907U (en) | Surface plasma resonance optical fiber pH sensing chip and detecting system | |
| CN1712928A (en) | MZ interference SPR chemical and biological sensor and system with fibre-optical microstructure | |
| CN203479701U (en) | Optical fiber sensor and measurement system | |
| CN105092536A (en) | Multimode-single- fiber surface plasma mode structured optical resonance sensor and detection method thereof | |
| CN104596992A (en) | Maximally tilted fiber bragg grating SPR (Surface Plasmon Resonance) biochemical sensor and manufacture method thereof | |
| CN203587177U (en) | Optical fiber liquid level sensor | |
| CN103822901A (en) | Hydrogen concentration and environmental temperature double-parameter measuring device based on tilted fiber bragg grating | |
| CN102095719A (en) | Optical fiber type sensor system based on surface plasma resonance and stimulated Raman scattering | |
| CN102788768A (en) | Method for measuring liquid refractive index based on novel reflection-type fiber loop mirror | |
| CN102175645B (en) | Polarized light detection-based highly-sensitive photonic crystal fiber refractive index sensor | |
| CN205656127U (en) | Reflective SPR refracting index sensor based on tapered fiber long period grating | |
| CN100561198C (en) | Fibre-optical microstructure Michelson interfere type surface plasma resonance chemistry and biology sensor and system | |
| CN101251534B (en) | Biochemistry and medical hollow core prague optical fiber measurement analysis system | |
| Liu et al. | Fiber SPR micro displacement sensor based on heterocore structure of graded index multimode fiber | |
| CN102252999A (en) | Optical fiber SPR (Surface Plasmon Resonance) sensor for monitoring methyl orange sewage degradation | |
| Li et al. | Sensitive and reproducible on-chip SERS detection by side-polished fiber probes integrated with microfluidic chips | |
| CN210923475U (en) | Serum albumin detection system based on optical fiber SPR sensor | |
| CN103398982A (en) | Method and sensor for testing surface plasmon resonance of pohotonic crystal fibers | |
| Li-hui et al. | Mixed oil detection method based on tapered fiber SPR sensor | |
| CN104614345A (en) | Portable optical fiber SPR (Surface Plasma Resonance) image sensor | |
| CN203798737U (en) | Liquid pyridine qualitative detector | |
| CN1712930A (en) | Interference evanescent wave chemical and biological sensor and system with fibre-optical Michelson | |
| Jiang et al. | Design of optical fiber SPR sensing system for water quality monitoring | |
| CN104034698A (en) | Portable replaceable optical fiber SPR sensor probe | |
| CN100567957C (en) | A kind of many optical fiber surface plasmon resonance probes with temperature correction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111123 |