CN207600625U - A kind of refractive index temperature biparameter sensor based on surface plasma body resonant vibration - Google Patents
A kind of refractive index temperature biparameter sensor based on surface plasma body resonant vibration Download PDFInfo
- Publication number
- CN207600625U CN207600625U CN201721536441.9U CN201721536441U CN207600625U CN 207600625 U CN207600625 U CN 207600625U CN 201721536441 U CN201721536441 U CN 201721536441U CN 207600625 U CN207600625 U CN 207600625U
- Authority
- CN
- China
- Prior art keywords
- mmf
- refractive index
- tcf
- spr
- golden film
- 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.)
- Expired - Fee Related
Links
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model is related to a kind of refractive index temperature biparameter sensor based on surface plasma body resonant vibration, feature includes：Wideband light source is coated with the MMF TCF MMF structures of golden film, spectrometer；The SPR sensorgram plot structure is to sputter one layer of golden film in MMF TCF MMF body structure surfaces using magnetron sputtering technology to be prepared；Since the core diameter of thin-core fibers is much smaller than common multimode fibre, strong evanscent field and SPR effects are generated in thin-core fibers, during the small increase of the refractive index near sensing unit, the depth down of SPR spectrums, and range extension is presented to long wave direction；Simultaneously, the low order cladding mode light that incident light excites when entering TCF by the last period MMF, evanscent field and SPR effects are not generated, when entering latter section of MMF, a part can form the MZ interference effects of multimode with core model, only temperature sensitive since MZ interference is not influenced by extraneous refractive index, when temperature near sensing unit changes, apparent variation occurs for the interference paddy wavelength of MZ interference spectrums.Therefore, the variation of refractive index can be obtained using the SPR energy variations composed, temperature can be demarcated using the interference paddy position of MZ interference spectrums, so as to realize the two-parameter measurement sensor based on SPR effects.
Description
Technical field
The utility model belongs to technical field of optical fiber sensing, be related to it is a kind of based on Surface Plasmon Resonance Technology can be same
When measure the optical fiber sensing system of refractive index and temperature biparameter.
Background technology
Surface plasma body resonant vibration (Surface Plasmon Resonance, abbreviation SPR) principle refers to when suitable optical frequency
The p-type polarised light that sends out of light source from optically denser medium incidence, during by the interface of medium and metallic film, if meeting incidence angle
More than the critical angle of total reflection, form the gradient distribution of electron concentration on the surface, can excitating surface plasma resonance, shape
Into surface plasma wave, meeting the light of resonance wavelength will be partly absorbed, the incident optical energy that the light of commplementary wave length will be reflected
Measure transfer phenomena.Beginning of the seventies late 1960s, roentgen Otto and Kretschmann are respectively used
The method of (Attenuated Total Reflection, abbreviation ATR) realizes the surface plasma of optical frequency wave band in an experiment
The excitation of body.
Since the sensor based on SPR effects has the characteristics that not by electromagnetic interference, high sensitivity, from the eighties in last century
So far, surface plasma resonance sensor is set on the basis of Kretschmann models there are many scholar in the world
Numerous studies have been made in meter, production and application, further provide various improved theoretical and methods.However, existing SPR sensorgram
Device is typically to be used for measuring refractive index, and the change of ambient temperature can cause the variation of refractive index, therefore, give refractive index
Measured value need to provide corresponding temperature.But existing spr sensor can only measure refractive index parameter, it is impossible to measure simultaneously
Temperature parameter all has ignored the influence of temperature, it is impossible to complete refractive index information is provided, therefore, when ambient temperature changes
The refractometry value that spr sensor provides can be caused deviation occur.From this, existing optical fiber SPR sensor is not due to
Temperature and refractive index parameter can be measured simultaneously, so as to provide accurate refractive index measurements.
Temperature and refractive index can not be carried out together based on surface plasma body resonant vibration (SPR) sensor for above-mentioned existing
When the problem of measuring, the utility model proposes a kind of simple structures --- the refraction based on Surface Plasmon Resonance Technology
Rate temperature biparameter sensor contains mark once moral interference effect (MZ interference) and SPR simultaneously in a single structure
Effect.Refractive index only is measured to the characteristic of extraneous refractive index sensitivity using SPR effects, it is quick only to temperature using MZ interference effects
The characteristic of sense demarcates temperature, measures while realizing refractive index and temperature.On the one hand, consider in the measurement of refractive index
The influence of temperature improves the integrality and accuracy of refractive index measurements；On the other hand, monitoring temperature is chemical industry, life
One key factor in the fields such as object, measures temperature parameter, increases the practical value of spr sensor.In addition, the biography
Sensor have it is simple in structure, it is at low cost, the advantages of high sensitivity.
Utility model content
In order to overcome existing surface plasma body resonant vibration (SPR) sensor that is based on that can not be carried out together to temperature and refractive index
When the problem of measuring, it is at low cost the utility model proposes a kind of simple in structure, have very strong practical value based on surface etc.
The refractive index temperature biparameter sensor of gas ions resonance principle.
The device that the utility model is taken to solve technical problem：
A kind of refractive index temperature biparameter sensor based on surface plasma body resonant vibration, including：Wideband light source is coated with gold
Multimode fibre-thin-core fibers-multimode fibre (MMF-TCF-MMF) structure of film, spectrometer.
The output terminal of wideband light source is connected with one section of multimode fibre, the other end of multimode fibre and the MMF- for being coated with golden film
TCF- MMF structure phase weldings, the other end and the second segment multimode fibre phase welding of the structure, second segment multimode fibre it is another
End is connected with spectrometer；Multimode fibre makees Transmission Fibers；The MMF-TCF-MMF structures for being coated with golden film are sensing unit；It is coated with golden film
MMF-TCF-MMF structures by one section of multimode fibre, one section of thin-core fibers and another section of multimode fibre welding successively, and at it
Uper side surface is coated with one layer of golden film and forms；Thin-core fibers length is between 1.2cm to 1.8cm；The golden film of the structure is to utilize magnetic
Control ion sputtering is sputtered in the uper side surface of MMF-TCF-MMF structures, the thickness of golden film 30nm to 50nm it
Between, the mean square deviation of surface roughness is less than or equal to 5nm；Spectrometer is as signal demodulating system.
The beneficial effects of the utility model are：
By the use of the MMF-TCF-MMF structures of golden film are coated with as the sensing plot structure of system, flashlight passes through the utility model
SPR effects and MZ interference occur when crossing sensing unit, is deepened by the loss of SPR spectroscopy and broadening degree obtains refractive index parameter,
The variation of temperature is demarcated by the interference paddy wavelength change of MZ interference spectrums, can realize that the refractive index temperature based on SPR effects is double
The advantages of parameter measurement sensor has high sensitivity, simple in structure, at low cost, and practical value is high.
Description of the drawings
Fig. 1 is a kind of structure diagram of the refractive index temperature biparameter sensor based on surface plasma body resonant vibration.Fig. 2
For the transmitted light spectrogram in the case of different refractivity.
Specific embodiment
Utility model is further described below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of refractive index temperature biparameter sensor based on surface plasma body resonant vibration, including：Broadband
Light source 1, the MMF-TCF-MMF structures 2 for being coated with golden film, spectrometer 3；
The working method of the utility model is：Wideband light source 1 generates flashlight, is transferred by multimode fibre and is coated with golden film
MMF-TCF-MMF structures 2,2 export optical signal spectrometer 3 is transferred to by multimode fibre.It is coated with the MMF-TCF of golden film
- MMF structures 2 are by one section of multimode fibre, 4, one sections of thin-core fibers 5 and another section of welding successively of multimode fibre 6, and on its upper side
Magnetron sputtering is coated with golden film 7 of a layer thickness between 30nm to 50nm and forms.It is coated with 2 quilt of MMF-TCF- MMF structures of golden film
It is fixed on glass slide, is positioned in culture dish, the SPR sensorgram area as system.When optical signal light is by the last period multimode fibre 4
During into thin-core fibers 5, a part of light can be activated into cladding mode, and high-order cladding mode in part therein reaches 5 He of thin-core fibers
The interface of golden film 7, when meeting pattern match condition, can occur at thin-core fibers and the interface of golden film 7 surface etc. from
There is apparent SPR formants and energy attenuation in output spectrum in daughter resonance effects.It is defeated with the increase of extraneous refractive index
Red shift occurs for the SPR summits gone out in spectrum so that entire spectrum is deepened in the energy loss of long wavelength part, as shown in Figure 2.Together
When, when flashlight enters thin-core fibers 5 by the last period multimode fibre 4, low order cladding mode will not arrive in the cladding mode being excited
Reach thin-core fibers 5 and the interface of golden film 7, do not generate SPR effects.Low order cladding mode transmits in the covering of thin-core fibers 5,
Up to thin-core fibers 5 and latter section of multimode fibre 6 interface when, a part can be re-coupled to sandwich layer, and with the basic mode of sandwich layer
Light interferes, and forms the MZ interference effects of multimode, and the MZ interference spectrums of pectination are generated on spectrogram.MZ interference spectrums are only by temperature
Influence, will not be influenced by variations in refractive index.The interference paddy of MZ interference spectrum intermediate waves part is chosen as monitoring wavelength, it will
It will not be influenced by SPR formants, therefore MZ interference is only related to temperature change in the interference paddy position of shortwave part, such as schemes
Shown in 2.In the utility model, the depth down of surface plasma body resonant vibration spectrum and the range to long wave direction are extended by the external world
Variations in refractive index causes, and interference paddy wavelength of the MZ interference spectrums in shortwave part is only determined by temperature change；Pass through SPR energy attenuations
Situation of change can obtain the variation of refractive index, temperature can be demarcated by the MZ interference paddy wavelength interfered.Therefore, in this reality
With compact proposed in novel and in compact structure, using SPR effect detection refractive index, the interference paddy of MZ interference spectrums is utilized
Position detection temperature, so as to fulfill refractive index and temperature while, measure.
The device can realize a kind of key of the refractive index temperature biparameter sensor based on surface plasma body resonant vibration
Technology has：
(1) since the core diameter of thin-core fibers is much smaller than common multimode fibre, when flashlight by the last period multimode fibre into
When entering thin-core fibers, part light energy can leak into the interface of covering, even up to thin-core fibers and golden film, effectively to send out
Raw SPR effects provide condition.
(2) when flashlight is propagated in multimode fibre, light energy concentrates on sandwich layer.When incident light arrival multimode fibre and carefully
At first interface of core fibre, due to core diameter mismatch, the cut-off condition of optical transport changes, and a part of flashlight can be swashed
It sends out as cladding mode light, is transmitted in covering with together with core model light.Wherein, low order cladding mode reaches thin-core fibers and multimode fibre
The second interface when, a part can be re-coupled to sandwich layer, and MZ interference occurs with core model light.Since MZ interference is only to temperature
Variation is sensitive, is not influenced by SPR effects or variations in refractive index, therefore the interference paddy wavelength of MZ interference and temperature change phase
It closes, can be used for demarcating temperature.
(3) on the one hand, covered without the use of circulator in optical fiber side deposited gold film layer using magnetron sputtering technology
The whole surface of lid optical fiber can reduce manufacture difficulty, so as to cost-effective；On the other hand, thin-core fibers surface institute gold-plated film
Thickness can influence the acuity and extinction ratio of SPR formants, and then influence the sensing capabilities of system, therefore the thickness of golden film
It is strict controlled between 30nm~50nm.
This SPR sensorgram system had not only achieved the purpose that two parameters of refractive index and temperature measured simultaneously, but also protect
Accuracy and the sensitivity of measuring method are hindered, have also reduced cost, there is very high practical value.
In one specific example of the utility model：Halogen light source of one spectrum width from 300nm to 1000nm；One
The mini optical fibre grating spectrograph of JA2000 series；The model S405-XP of thin-core fibers, axial length 1.8cm, sandwich layer
A diameter of 3 μm, cladding diameter is 125 μm；A diameter of 62.5 μm of the sandwich layer of multimode fibre, cladding diameter are 125 μm；Golden film is thick
It spends for 40nm；Refractometry ranging from 1.34~1.4161；Temperature measurement range is 35 DEG C~75 DEG C.Experimental data such as table 1
Shown in table 2：
The corresponding energy of 1 different refractivity of table
| Refractive index | 1.34 | 1.3461 | 1.3491 | 1.354 | 1.3597 | 1.3652 | 1.3699 | 1.3758 |
| Energy (dB) | -11.3156 | -11.147 | -10.9023 | -10.7521 | -10.5202 | -10.3044 | -10.2246 | -9.98341 |
| Refractive index | 1.3797 | 1.3864 | 1.391 | 1.3968 | 1.4012 | 1.406 | 1.4116 | 1.4161 |
| Energy (dB) | -9.9383 | -9.82002 | -9.74848 | -9.76369 | -9.69668 | -9.63953 | -9.52542 | -9.59622 |
The corresponding wavelength of 2 different temperatures of table
| Temperature | 35 | 45 | 55 | 65 | 75 |
| Wavelength (nm) | 572.55 | 571.82 | 571.45 | 571.08 | 570.71 |
Claims (1)
1. a kind of refractive index temperature biparameter sensor based on surface plasma body resonant vibration, including：Wideband light source is coated with golden film
Multimode fibre-thin-core fibers-multimode fibre（MMF-TCF-MMF）Structure, spectrometer, it is characterised in that：Wideband light source it is defeated
Outlet is connected with one section of multimode fibre, the other end of multimode fibre and the MMF-TCF-MMF structure phase weldings for being coated with golden film,
The other end of the structure is connected with second segment multimode fibre phase welding, the other end of second segment multimode fibre with spectrometer；Multimode
Optical fiber makees Transmission Fibers；MMF-TCF-MMF the structures for being coated with golden film are sensing unit；Spectrometer is as signal demodulating system；
MMF-TCF-MMF the structures for being coated with golden film, it is characterised in that：By one section of multimode fibre（MMF）, it is one section thin
Core fibre（TCF）With another section of multimode fibre（MMF）Welding successively, and surface is coated with one layer of golden film composition on its upper side；Thin core
Fiber lengths are between 1.2cm to 1.8cm；The golden film of the structure be using magnetron sputtering technology MMF-TCF-
The uper side surface of MMF structures sputters, and the thickness of golden film is between 30nm to 50nm, and the mean square deviation of surface roughness is less than etc.
In 5nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721536441.9U CN207600625U (en) | 2017-11-17 | 2017-11-17 | A kind of refractive index temperature biparameter sensor based on surface plasma body resonant vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721536441.9U CN207600625U (en) | 2017-11-17 | 2017-11-17 | A kind of refractive index temperature biparameter sensor based on surface plasma body resonant vibration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207600625U true CN207600625U (en) | 2018-07-10 |
Family
ID=62760454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721536441.9U Expired - Fee Related CN207600625U (en) | 2017-11-17 | 2017-11-17 | A kind of refractive index temperature biparameter sensor based on surface plasma body resonant vibration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207600625U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917857A (en) * | 2018-09-13 | 2018-11-30 | 东北大学 | A kind of long-distance surface plasmon resonance sensor based on coreless fiber |
| CN108981956A (en) * | 2018-09-05 | 2018-12-11 | 东北大学 | Brass tube encapsulation type optical fiber temperature sensor |
| CN113049013A (en) * | 2021-03-05 | 2021-06-29 | 桂林电子科技大学 | Novel double-parameter optical fiber biochemical sensor |
-
2017
- 2017-11-17 CN CN201721536441.9U patent/CN207600625U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108981956A (en) * | 2018-09-05 | 2018-12-11 | 东北大学 | Brass tube encapsulation type optical fiber temperature sensor |
| CN108917857A (en) * | 2018-09-13 | 2018-11-30 | 东北大学 | A kind of long-distance surface plasmon resonance sensor based on coreless fiber |
| CN113049013A (en) * | 2021-03-05 | 2021-06-29 | 桂林电子科技大学 | Novel double-parameter optical fiber biochemical sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107894292B (en) | Refractive index temperature double-parameter measurement method and device based on optical fiber surface plasmon resonance | |
| US9285534B2 (en) | Fiber-optic surface plasmon resonance sensor and sensing method using the same | |
| CN207600625U (en) | A kind of refractive index temperature biparameter sensor based on surface plasma body resonant vibration | |
| CN112098339A (en) | Multi-parameter sensor for surface plasma resonance of D-type photonic crystal fiber | |
| CN105157585A (en) | Standard interference piece fitting method capable of acquiring film thickness and refractivity simultaneously | |
| Sultan et al. | Surface plasmon resonance based fiber optic sensor: theoretical simulation and experimental realization | |
| CN108414474A (en) | A kind of SPR fibre optical sensors and preparation method thereof based on temperature self-compensation | |
| CN114062309B (en) | Double-parameter sensing system based on near-infrared band double-peak PCF concentration and magnetic field | |
| CN205656127U (en) | Reflective SPR refracting index sensor based on tapered fiber long period grating | |
| CN109253986B (en) | Double-ring optical sensor of cascade Fourier transform spectrometer | |
| Yin et al. | A broadband SPR sensor based on a no-core fiber coated with gold-silver for refractive index and temperature measurement | |
| Zhang et al. | Dual-core photonic crystal fiber surface plasmon resonance sensor with high sensitivity and narrow FWHM | |
| Tong et al. | Surface plasmon resonance fiber optic biosensor-based graphene and photonic crystal | |
| Wang et al. | SPR sensor based on cascaded NCF and U-shaped multimode fibers for simultaneous detection of refractive index and temperature | |
| CN209459675U (en) | A kind of three-decker D-type optical fiber spr sensor | |
| CN207937357U (en) | A kind of Streptavidin spr sensor based on fiber bragg grating | |
| CN104570219A (en) | Integrated optical sensor based on period waveguide microcavity resonance interference effect | |
| CN216746487U (en) | Double-parameter optical fiber sensor with cascaded microsphere cavities | |
| CN208043656U (en) | A kind of SPR fibre optical sensors based on temperature self-compensation | |
| Kumar et al. | Modelling of surface plasmon resonance sensor for detection of mass concentration of ethanol and methanol in a binary mixture | |
| CN111928880B (en) | Mach-Zehnder interference optical fiber based on surface plasma effect and sensor thereof | |
| CN206594060U (en) | A kind of index sensor for the Michelson structure that CNT is modified based on thin-core fibers | |
| CN108956530A (en) | A kind of index sensor based on bragg fiber end face gold hole array structure | |
| Ma et al. | Theoretical and experimental investigation of an all-fiber waveguide coupled surface plasmon resonance sensor with Au–ZnO–Au sandwich structure | |
| CN115290604B (en) | Refractive index sensor with temperature compensation function based on double-D structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201230 Address after: 114001, No. 368, Qianshan Road, hi tech Zone, Liaoning, Anshan Patentee after: ANSHAN FENGLAN TECHNOLOGY Co.,Ltd. Address before: 310018 Hangzhou, Zhejiang, Jianggan District province Xiasha Higher Education Park, No. 258 source street Patentee before: China Jiliang University |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180710 Termination date: 20211117 |