CN207689367U - A kind of distributed liquid refractivity sensing device in parallel of two-way cascade - Google Patents
A kind of distributed liquid refractivity sensing device in parallel of two-way cascade Download PDFInfo
- Publication number
- CN207689367U CN207689367U CN201820102745.2U CN201820102745U CN207689367U CN 207689367 U CN207689367 U CN 207689367U CN 201820102745 U CN201820102745 U CN 201820102745U CN 207689367 U CN207689367 U CN 207689367U
- Authority
- CN
- China
- Prior art keywords
- fiber
- spr
- optical fiber
- light source
- core
- 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.)
- Active
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 78
- 239000000835 fiber Substances 0.000 claims abstract description 109
- 239000013307 optical fiber Substances 0.000 claims abstract description 61
- 238000001228 spectrum Methods 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims description 24
- 239000012528 membrane Substances 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 16
- 230000003595 spectral effect Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 7
- WSNMPAVSZJSIMT-UHFFFAOYSA-N COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 Chemical compound COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 WSNMPAVSZJSIMT-UHFFFAOYSA-N 0.000 claims description 6
- 230000005284 excitation Effects 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000012360 testing method Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 239000003574 free electron Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000002198 surface plasmon resonance spectroscopy Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003891 environmental analysis Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013077 target material Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
A kind of distributed liquid refractivity sensing device in parallel of two-way cascade of the utility model, can refractive index sensing fast and efficiently be realized to four kinds of prepare liquids, solve the problems, such as that traditional fiber spr sensor needs more set sensors when a variety of testing liquids need while detecting or frequently replaces sensing liquid to be measured.The device is made of light source, light source tail optical fiber, fiber optic splitter, twin-core fiber, reception optical fiber and spectrometer；The output end of light source is connected to the input terminal of light source tail optical fiber, the output end of light source tail optical fiber is connected to the input terminal of fiber optic splitter, two output ends of fiber optic splitter are welded with two fibre core faces of twin-core fiber input terminal respectively, reception optical fiber receives the SPR sensorgram spectrum of twin-core fiber output, is connect respectively with the input terminal of a spectrometer per root receiving fiber.The utility model realizes the used in parallel of the distributed spr sensor of two-way cascade on a set of sensing device, can carry out sensing detection by most multipair four kinds sensing liquid to be measured simultaneously.
Description
Technical field
The utility model is related to technical field of optical fiber sensing, are in particular a kind of distributed liquid in parallel of two-way cascade
Body refractive index sensing device.
Background technology
Excellent transmission medium of the optical fiber as modern society, with electrical insulating property is good, chemical property is stable, service life
The advantages that long, safe and reliable, pollution-free, and can work under such as inflammable and explosive, toxic under harsh conditions, high temperature and pressure environment
Make, is widely applied in fields such as communication, measurement, detection, medicine.
Optical fiber surface plasmon resonance body (SurfacePlasmonResonance, SPR) sensor is mainly to extraneous ring
The variation of a certain physical quantity in border is perceived and is transmitted, and physical quantity can be temperature, liquid refractivity, pressure etc..Liquid refracting
Rate has daily life the influence of every aspect, and the refractive index of liquid is in biomedicine, food inspection, environment point
The fields such as analysis are attached great importance to, and application scenarios are such as：Liquid refractivity is on biomedical biofluid detection, the ground of food inspection
The water sample detection etc. of the detection of ditch oil, environmental analysis.The utility model is with end reflection formula and two kinds of optical fiber liquid of on-line normalization formula
Based on body index sensor, traditional fiber SPR liquid refractive index sensors can sense the refraction of testing liquid all the way
Rate changes, and in order to expand the usage range of optical fiber SPR sensor, enhances practicability, distributed cascaded optical fiber spr sensor is met the tendency of
And give birth to, same sensing spectrum can obtain the variations in refractive index of two-way prepare liquid simultaneously.The utility model extends cascade distribution
The application method of formula spr sensor realizes novel the making of the distributed spr sensor parallel connection of two-way cascade on a sensor
With method, according to twin-core fiber devise it is a kind of can the variations in refractive index of sensing liquid to be measured to four tunnels simultaneously sensed
Sensing device improves sensing efficiency.
Invention content
A kind of distributed liquid refractivity sensing device in parallel of two-way cascade of the utility model, can be simple and quick, high
Effect realizes refractive index sensing to four kinds of prepare liquids, solves traditional fiber spr sensor and is needed simultaneously in a variety of testing liquids
The problem of needing more set sensors when detection or frequently replacing sensing liquid to be measured.
In order to solve the above technical problems, a kind of distributed liquid refractivity sensing dress in parallel of two-way cascade of the utility model
It sets and is made of light source, light source tail optical fiber, fiber optic splitter, twin-core fiber, reception optical fiber and spectrometer；
Light source is the super continuum source of spectral width 450nm-1100nm, the exciting light for generating excitation SPR phenomenons；
Light source tail optical fiber is used for transmission light source light spectrum；Fiber optic splitter is for the light of light source tail optical fiber to be divided into two bundles；Twin-core fiber is for feeling
Know that liquid refractivity changes, excite SPR phenomenons, generates SPR sensorgram spectrum；Reception optical fiber is for receiving and transmitting SPR sensorgram light
Spectrum；The spectral width 450nm-1100nm of spectrometer, for receiving, showing and record SPR sensorgram spectrum；
The output end of light source is connected to the input terminal of light source tail optical fiber, and the output end of light source tail optical fiber is connected to fiber optic splitter
Two output ends of input terminal, fiber optic splitter are welded with two fibre core faces of twin-core fiber input terminal respectively, and two piece-root graftings are received
Optical fiber receive respectively twin-core fiber output end two fibre cores output SPR sensorgram spectrum, per root receiving fiber respectively with one
The input terminal of spectrometer connects.
As advanced optimizing for the utility model, a kind of distributed liquid refracting in parallel of two-way cascade of the utility model
110 μm of two core centre distances of twin-core fiber described in rate sensing device, 100 μm of twin-core fiber inner diameter, twin-core light
Fine side is provided with SPR sensorgram structure I and SPR sensorgram structure II, and twin-core fiber output end end face is provided with SPR sensorgram structure III
With SPR sensorgram structure IV.
As advanced optimizing for the utility model, a kind of distributed liquid refracting in parallel of two-way cascade of the utility model
The composition of SPR sensorgram structure I described in rate sensing device includes fiber core, nanoporous metal membrane and sensing liquid to be measured；SPR sensorgram
The structure of structure I is the sensing groove using fiber core as bottom, and nanoporous metal membrane is covered on fiber core, sensing to be measured
The full sensing groove of liquid filling；The Nomenclature Composition and Structure of Complexes of SPR sensorgram structure II is identical as SPR sensorgram structure I.
As advanced optimizing for the utility model, a kind of distributed liquid refracting in parallel of two-way cascade of the utility model
The composition of SPR sensorgram structure III described in rate sensing device is identical as SPR sensorgram structure I；Structure is SPR cone angle structures, cone angle
Ranging from 8 °<α<20°；The composition of SPR sensorgram structure IV is identical as SPR sensorgram structure III as structure.
As advanced optimizing for the utility model, a kind of distributed liquid refracting in parallel of two-way cascade of the utility model
Nanoporous metal membrane described in rate sensing device is golden film or silverskin or other nanoporous metal membranes for exciting SPR phenomenons.
As advanced optimizing for the utility model, a kind of distributed liquid refracting in parallel of two-way cascade of the utility model
The ranges of indices of refraction of sensing liquid to be measured described in rate sensing device is 1.333-1.385.
As advanced optimizing for the utility model, a kind of distributed liquid refracting in parallel of two-way cascade of the utility model
Reception optical fiber described in rate sensing device is graded index multimode fiber or step multimode fibre.
A kind of two-way distributed liquid refractivity sensing device in parallel of cascade of the utility model has the beneficial effect that：
1. a kind of distributed liquid refractivity sensing device in parallel of the utility model two-way cascade, can it is simple and quick,
Refractive index sensing efficiently is realized to four kinds of prepare liquids, solve traditional fiber spr sensor needs in a variety of sensing liquid to be measured
The problem of needing more set sensors when detecting simultaneously or frequently replacing sensing liquid to be measured.
2. the utility model can carry out sensing detection by most multipair four kinds sensing liquid to be measured simultaneously.
3. the utility model realizes the used in parallel of the distributed spr sensor of two-way cascade on a set of sensing device,
The application method of optical fiber SPR sensor is expanded.
4. the utility model is based on optical fiber sensing principle, sensing outcome sensitivity is higher.
5. the utility model making material is simply easily sought, production method is simple, of low cost.
6. the utility model can be with continuous work, real-time high-efficiency, sensing spectrum are reachable in real time, and work efficiency is high.
7. the utility model can repeatedly use, cost-effective, highly reliable.
Description of the drawings
The utility model is described in more detail with specific implementation method below in conjunction with the accompanying drawings.
Fig. 1 is a kind of structural representation of the distributed liquid refractivity sensing device in parallel of two-way cascade of the utility model
Figure.
Fig. 2 is the sensing arrangement schematic diagram of Fig. 1.
Fig. 3 is the Nomenclature Composition and Structure of Complexes schematic diagram of I 4-1 of SPR sensorgram structure.
Fig. 4 is the structural schematic diagram of III 4-3 of SPR sensorgram structure.
In figure：Light source 1；Light source tail optical fiber 2；Fiber optic splitter 3；Twin-core fiber 4；I 4-1 of SPR sensorgram structure；Fiber core 4-
1-1；Nanoporous metal membrane 4-1-2；Sensing liquid 4-1-3 to be measured；II 4-2 of SPR sensorgram structure；III 4-3 of SPR sensorgram structure；SPR is passed
Feel IV 4-4 of structure；Reception optical fiber 5；Spectrometer 6；Optical fiber bonding machine 7；The cone angle of III 4-3 of SPR sensorgram structure.
Specific implementation mode
Illustrate present embodiment, a kind of distributed liquid in parallel of two-way cascade of the utility model with reference to Fig. 1,2,3,4
Body refractive index sensing device, can it is simple and quick, refractive index sensings efficiently are realized to four kinds of prepare liquids, solve traditional fiber
Spr sensor needs more set sensors when a variety of testing liquids need while detecting or frequently replaces asking for sensing liquid to be measured
Topic.
In order to solve the above technical problems, a kind of distributed liquid refractivity sensing dress in parallel of two-way cascade of the utility model
It sets and is made of light source 1, light source tail optical fiber 2, fiber optic splitter 3, twin-core fiber 4, reception optical fiber 5 and spectrometer 6；
Light source 1 is the super continuum source of spectral width 450nm-1100nm, the excitation for generating excitation SPR phenomenons
Light, resonant wavelength ranging from 450nm -1100nm of traditional fiber spr sensor, the spectral width of light source 1 need to include
450nm -1100nm, at least 450nm -1100nm；Light source tail optical fiber 2 is used for transmission light source light spectrum；Fiber optic splitter 3 is used for will
The light of light source tail optical fiber 2 is divided into two bundles, and is injected separately into two fibre cores of twin-core fiber 4 per beam output light；Twin-core fiber 4 is for feeling
Know that liquid refractivity changes, excite SPR phenomenons, generates SPR sensorgram spectrum, it is distributed that two-way cascade is provided on twin-core fiber 4
SPR sensorgram structure, I 4-1 of SPR sensorgram structure and IV 4-4 of SPR sensorgram structure are to cascade distributed SPR sensorgram structure, SPR all the way
II 4-2 of sensing arrangement and III 4-3 of SPR sensorgram structure is to cascade distributed SPR sensorgram structure all the way；Reception optical fiber 5 is for receiving
With transmission SPR sensorgram spectrum, reception optical fiber 5 can be that graded index multimode fiber is alternatively step multimode fibre；Spectrometer 6
Spectral width 450nm-1100nm, for receiving, showing and recording SPR sensorgram spectrum, the spectral width of spectrometer 6 at least wraps
Spectral width 450nm -1100nm containing light source 1, guarantee can receive complete sensing spectrum；
The output end of light source 1 is connected to the input terminal of light source tail optical fiber 2, and the output end of light source tail optical fiber 2 is connected to fiber beam splitting
The input terminal of device 3, by optical fiber bonding machine 7 by two output ends of fiber optic splitter 3 respectively with 4 input terminal of twin-core fiber two
A fibre core face welding, ensures that two fibre cores of twin-core fiber 4 can utmostly receive the output light of fiber optic splitter 3,
Two root receiving fibers 5 receive the SPR sensorgram spectrum of two fibre cores output of 4 output end of twin-core fiber respectively, per root receiving fiber 5
It is connect respectively with the input terminal of a spectrometer 6.
A kind of two-way of the utility model cascades the twin-core fiber 4 described in distributed liquid refractivity sensing device in parallel
Two 110 μm of core centre distances, 100 μm of 4 inner diameter of twin-core fiber, 4 side of twin-core fiber is provided with SPR sensorgram structure I
II 4-2 of 4-1 and SPR sensorgram structure, 4 output end end face of twin-core fiber are provided with III 4-3 of SPR sensorgram structure and SPR sensorgram structure
Ⅳ4-4。
SPR sensorgram structure described in a kind of distributed liquid refractivity sensing device in parallel of two-way cascade of the utility model
I 4-1 compositions include fiber core 4-1-1, the nanoporous metal membrane 4-1-2 of twin-core fiber 4 and sensing liquid 4-1-3 to be measured；SPR is passed
The structure for feeling I 4-1 of structure is the sensing groove using fiber core 4-1-1 as bottom, and nanoporous metal membrane 4-1-2 is covered in optical fiber
On fibre core 4-1-1, the full sensing groove of sensing liquid 4-1-3 fillings to be measured；The Nomenclature Composition and Structure of Complexes and SPR of II 4-2 of SPR sensorgram structure
I 4-1 of sensing arrangement is identical, and the composition of III 4-3 of SPR sensorgram structure is identical as I 4-1 of SPR sensorgram structure；Structure is SPR cone angle knots
The fiber end face of 4 output end of twin-core fiber is put on optical fiber cone grinding machine by structure, is milled into cone angle structure, ranging from 8 ° of cone angle<α<
20°；The composition of IV 4-4 of SPR sensorgram structure is identical as III 4-3 of SPR sensorgram structure as structure；The production method of SPR sensorgram structure：
One section of twin-core fiber 4 of 40cm-50cm is chosen first, is clamped using optical fiber at the 1cm-2cm of optical fiber both ends and is divested coat, uses nonwoven
Cloth dips the mixed liquor of alcohol and ether, is wiped repeatedly covering and is cleaned, both ends of the surface are cut by optical fiber cutter it is smooth,
The fiber segment for choosing one section of 1cm-2cm long altogether makes I 4-1 of SPR sensorgram structure, then, sensing unit optical fiber is divested by optical fiber pincers
Coat, the fibre cladding of this section of 1cm-2cm is removed using optical fiber side throwing method or hydrofluoric acid etch, make its leak out fibre core,
Sensing groove is made, the sensing groove bottom surface for leaking out fibre core is being plated by nanoporous metal membrane, film by small ion sputtering respectively
Thickness selection can excite SPR phenomenons, I bases 4-1 of SPR sensorgram structure to complete, and when use fills sensing liquid 4-1-3 to be measured
Sensing can be realized, the production method of II 4-2 of SPR sensorgram structure is identical as I 4-1 of SPR sensorgram structure, the position of each sensing unit
It is staggered as possible on 4 fibre core axis direction of twin-core fiber, the experimental situation easy to manufacture sensed in this way so that each sensing unit
Sensing liquid to be measured be not easy to interfere；4 output end of twin-core fiber is put on optical fiber cone grinding machine, by 4-3 pairs of SPR sensorgram structure III
The fibre core answered is milled into cone angle structure, 8 ° of cone angle range<α<20 °, the mixed liquor of alcohol and ether is dipped with non-woven fabrics, is wiped repeatedly
It wipes the fiber end face ground to be cleaned, its conical surface is put into plating in compact particle sputter upward sets nanoporous metal membrane, leads to
The value for overregulating the thickness of nanoporous metal membrane and the cone angle of III 4-3 of SPR sensorgram structure makes SPR sensorgram structure II 4-2 and SPR
The resonance trough of sensing arrangement III 4-3, two SPR phenomenons is not interfere with each other, by receive optical fiber 5 receive SPR sensorgram spectrum, and
It is shown on spectrometer 6, is clearly cascaded distributed SPR sensorgram spectrum, with two of the distributed spr sensor of cascade all the way
The gap of sensing unit nano metal film thickness selection is as big as possible, and guarantee may be implemented under conditions of cascading distributed SPR sensorgram, make
It must sense that effect is more excellent, the interference that two-stage senses the resonance trough of spectrum is as small as possible, and SPR sensorgram structure I 4-1 and SPR are passed
Feel the distributed SPR sensorgram construction manufacturing method of IV roads 4-4 of structure cascade and parameter selection similarly.
The SPR described in a kind of distributed liquid refractivity sensing device in parallel of two-way cascade of the utility model is passed
The composition for feeling III 4-3 of structure is identical as I 4-1 of SPR sensorgram structure；Structure is SPR cone angle structures, by 4 output end of twin-core fiber
Fiber end face is put on optical fiber cone grinding machine, is milled into cone angle structure, ranging from 8 ° of cone angle<α<20°；IV 4-4's of SPR sensorgram structure
Composition is identical as III 4-3 of SPR sensorgram structure as structure.
Nanoporous metal membrane described in a kind of distributed liquid refractivity sensing device in parallel of two-way cascade of the utility model
4-1-2 is golden film or silverskin or other nanoporous metal membranes for exciting SPR phenomenons, and film thickness selection needs that SPR phenomenons can be excited, when
When nanoporous metal membrane is golden film, experiment shows that when golden film thickness be that 50nm-55nm senses excellent effect, and nanoporous metal membrane passes through small
The plating of type ion sputtering instrument is set, and the metallic target material of the inside determines the type for the film that plating is set, can be small by adjusting taking human as replacement
The plating that required nanoporous metal membrane can be completed in vacuum degree, electric current and the time of type ion sputtering instrument is set, and the nanoporous metal membrane set is plated
Thickness detects whether thickness reaches requirement by three-dimensional appearance analyzer.
Sensing liquid to be measured described in a kind of distributed liquid refractivity sensing device in parallel of two-way cascade of the utility model
The ranges of indices of refraction of body 4-1-3 is 1.333-1.385, I 4-1 of SPR sensorgram structure, II 4-2 of SPR sensorgram structure, SPR sensorgram structure
III 4-3 and IV 4-4 of SPR sensorgram structure fill sensing liquid to be measured according to demand, and the sensing liquid filled identical also can may be used
Difference, according to demand depending on, the utility model can simultaneously at most carry out four kinds it is to be measured sensing liquid refractive index sensings.
Reception optical fiber 5 described in a kind of distributed liquid refractivity sensing device in parallel of the utility model two-way cascade is
Graded index multimode fiber or step multimode fibre.
The operation principle of the utility model is：
The light of light source 1 is passed to by light source tail optical fiber 2 in optical fiber score device 3, and fiber optic splitter 3 divides the light of light source tail optical fiber 2
For two beams, two beam output lights of fiber optic splitter 3 are injected separately into two of 4 input terminal of twin-core fiber by optical fiber bonding machine 7
In fibre core, for cascading distributed SPR sensorgram structure all the way：Light in the fibre core of twin-core fiber 4 transmits in transmission process
To the interface of the fiber core 4-1-1 of I 4-1 of side SPR sensorgram structure, the evanescent wave that light generates is in sensing liquid 4-1- to be measured
The light of certain frequency is consistent with the free electron frequency of nanoporous metal membrane 4-1-2 under the action of 3, generates resonance, and free electron is inhaled
Photon energy is received, therefore total reflection condition is destroyed, and the light of the frequency is spectrally shown by Electron absorption therefore due to its energy in sensing
It is shown as resonance trough, i.e. excitation generates SPR phenomenons, when SPR sensorgram spectral transmissions to 4 output end SPR sensorgram structure of twin-core fiber
Second of SPR phenomenon is excited when IV 4-4, since the cone angle of III 4-3 of thickness and SPR sensorgram structure of nanoporous metal membrane is all SPR
The influence factor of phenomenon resonance trough, therefore pass through the thickness and the cone angle of III 4-3 of SPR sensorgram structure for adjusting nanoporous metal membrane
Value is not so that two SPR phenomenons resonance troughs are interfere with each other, by receiving the reception SPR sensorgram spectrum of optical fiber 5, and on spectrometer 6
It has been shown that, is clearly cascaded distributed SPR sensorgram spectrum.The cascade of II 4-2 of SPR sensorgram structure and III 4-3 of SPR sensorgram structure
Distributed SPR sensorgram structure is similarly.When I 4-1 of SPR sensorgram structure, II 4-2 of SPR sensorgram structure, III 4-3 of SPR sensorgram structure and
When IV 4-4 of SPR sensorgram structure fills four kinds of different sensing liquid to be measured respectively, this device can be carried out at the same time four tunnel differences and wait for
Survey the sensing of liquid refractivity.
The utility model solves traditional fiber spr sensor and is needed when a variety of sensing liquid to be measured need while detecting
The problem of covering sensors or frequently replacing sensing liquid to be measured, sensing liquid to be measured to four kinds can sense more simultaneously, and
The used in parallel of the distributed spr sensor of two-way cascade is realized on a set of sensing device, has expanded optical fiber SPR sensor
Application method.
Certainly, above description is not limitation of the utility model, and the utility model is also not limited to the example above, this skill
The variations, modifications, additions or substitutions that the those of ordinary skill in art field is made in the essential scope of the utility model, also belong to
In the scope of protection of the utility model.
Claims (7)
1. a kind of distributed liquid refractivity sensing device in parallel of two-way cascade, it is characterised in that：Two-way cascade is distributed
Liquid refractivity sensing device in parallel is by light source (1), light source tail optical fiber (2), fiber optic splitter (3), twin-core fiber (4), reception
Optical fiber (5) and spectrometer (6) composition；
Light source (1) is the super continuum source of spectral width 450nm-1100nm, the exciting light for generating excitation SPR phenomenons；
Light source tail optical fiber (2) is used for transmission light source light spectrum；Fiber optic splitter (3) is for the light of light source tail optical fiber (2) to be divided into two bundles；Twin-core light
Fine (4) excite SPR phenomenons, generate SPR sensorgram spectrum for perceiving liquid refractivity variation；Reception optical fiber (5) for receive and
Transmit SPR sensorgram spectrum；The spectral width 450nm-1100nm of spectrometer (6), for receiving, showing and record SPR sensorgram light
Spectrum；
The output end of light source (1) is connected to the input terminal of light source tail optical fiber (2), and the output end of light source tail optical fiber (2) is connected to optical fiber point
The input terminal of beam device (3), two output ends of fiber optic splitter (3) respectively with two fibre cores of twin-core fiber (4) input terminal just
To welding, two root receiving fibers (5) receive the SPR sensorgram spectrum of two fibre cores output of twin-core fiber (4) output end respectively, often
Root receiving fiber (5) is connect with the input terminal of a spectrometer (6) respectively.
2. a kind of distributed liquid refractivity sensing device in parallel of two-way cascade according to claim 1, feature exist
In：110 μm of two core centre distances of the twin-core fiber (4), 100 μm of twin-core fiber (4) inner diameter, twin-core fiber
(4) side is provided with SPR sensorgram structure I (4-1) and SPR sensorgram structure II (4-2), the setting of twin-core fiber (4) output end end face
There are SPR sensorgram structure III (4-3) and SPR sensorgram structure IV (4-4).
3. a kind of distributed liquid refractivity sensing device in parallel of two-way cascade according to claim 2, feature exist
In：SPR sensorgram structure I (4-1) composition includes fiber core (4-1-1), nanoporous metal membrane (4-1-2) and sensing to be measured
Liquid (4-1-3)；The structure of SPR sensorgram structure I (4-1) is using fiber core (4-1-1) as the sensing groove of bottom, nanometer
Metal film (4-1-2) is covered on fiber core (4-1-1), the full sensing groove of sensing liquid (4-1-3) filling to be measured；SPR is passed
The Nomenclature Composition and Structure of Complexes for feeling structure II (4-2) is identical as SPR sensorgram structure I (4-1).
4. a kind of distributed liquid refractivity sensing device in parallel of two-way cascade according to claim 3, feature exist
In：The composition of the SPR sensorgram structure III (4-3) is identical as SPR sensorgram structure I (4-1)；Structure is SPR cone angle structures, cone
Angular region is 8 °<α<20°；The composition of SPR sensorgram structure IV (4-4) is identical as SPR sensorgram structure III (4-3) as structure.
5. a kind of distributed liquid refractivity sensing device in parallel of two-way cascade according to claim 3, feature exist
In：The nanoporous metal membrane (4-1-2) is golden film or silverskin or other nanoporous metal membranes for exciting SPR phenomenons.
6. a kind of distributed liquid refractivity sensing device in parallel of two-way cascade according to claim 3, feature exist
In：The ranges of indices of refraction of the sensing liquid (4-1-3) to be measured is 1.333-1.385.
7. a kind of distributed liquid refractivity sensing device in parallel of two-way cascade according to claim 1, feature exist
In：The reception optical fiber (5) is graded index multimode fiber or step multimode fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820102745.2U CN207689367U (en) | 2018-01-22 | 2018-01-22 | A kind of distributed liquid refractivity sensing device in parallel of two-way cascade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820102745.2U CN207689367U (en) | 2018-01-22 | 2018-01-22 | A kind of distributed liquid refractivity sensing device in parallel of two-way cascade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207689367U true CN207689367U (en) | 2018-08-03 |
Family
ID=62992106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820102745.2U Active CN207689367U (en) | 2018-01-22 | 2018-01-22 | A kind of distributed liquid refractivity sensing device in parallel of two-way cascade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207689367U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540179A (en) * | 2018-12-21 | 2019-03-29 | 南京信息工程大学 | Optical fiber taper sensing probe based on surface plasma body resonant vibration and preparation method thereof |
| CN113702339A (en) * | 2021-08-30 | 2021-11-26 | 桂林电子科技大学 | Parallel SPR sensor based on capillary optical fiber |
-
2018
- 2018-01-22 CN CN201820102745.2U patent/CN207689367U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540179A (en) * | 2018-12-21 | 2019-03-29 | 南京信息工程大学 | Optical fiber taper sensing probe based on surface plasma body resonant vibration and preparation method thereof |
| CN109540179B (en) * | 2018-12-21 | 2024-05-17 | 南京信息工程大学 | Optical fiber conical sensing probe based on surface plasma resonance and manufacturing method thereof |
| CN113702339A (en) * | 2021-08-30 | 2021-11-26 | 桂林电子科技大学 | Parallel SPR sensor based on capillary optical fiber |
| CN113702339B (en) * | 2021-08-30 | 2022-09-30 | 桂林电子科技大学 | Parallel SPR sensor based on capillary optical fiber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101769857B (en) | Plasma resonant type optical fiber biosensor based on annular core wave guide | |
| CN106841108B (en) | A kind of adjustable optical fiber SPR sensor of fiber core refractive index and preparation method thereof | |
| CN103868457B (en) | Optical fiber multiple spot micro-displacement sensing method and device based on surface plasma resonance | |
| CN104215610B (en) | Plasma resonance chamber-based fiber surface plasma sensor | |
| CN105911025B (en) | A kind of distribution helical-core fiber surface plasma resonance sensor and its measurement method | |
| CN110208220B (en) | Multi-core few-mode optical fiber local surface plasmon resonance sensor | |
| CN106066313A (en) | Distributed surface plasma resonance optical fiber sensor and the method for measuring refractive indexes of liquid | |
| CN101979963A (en) | Integrally molded fiber microsensor and manufacturing method thereof | |
| CN103398974B (en) | A kind of Fibre Optical Sensor, preparation method and the system of measurement | |
| CN106596474A (en) | Three-channel SPR (surface plasma resonance) sensor based on seven-core optical fiber | |
| CN108180840B (en) | A kind of optical fiber micro-displacement sensing and means for correcting and method | |
| CN203479701U (en) | Optical fiber sensor and measurement system | |
| CN101251616B (en) | Hollow core photon crystal optical fiber and spectral measurement device using said optical fiber | |
| CN207689367U (en) | A kind of distributed liquid refractivity sensing device in parallel of two-way cascade | |
| CN101303300A (en) | Minitype optical fiber F-P sensor, manufacturing method and liquid tester based on sensor | |
| CN201233367Y (en) | Spectral measurement apparatus by utilizing hollow photonic crystal fiber | |
| CN102809388A (en) | Optical fiber probe sensor | |
| CN110389111A (en) | One kind being based on bimodulus core shift optical fiber interference type index sensor | |
| CN207198385U (en) | A kind of fiber end face formula Echo Wall resonator based on microballoon | |
| CN209978960U (en) | Optical fiber sensor for simultaneously detecting temperature and humidity | |
| CN108281884A (en) | A kind of Raman spectrum detecting device of Fabry-Perot cavity enhancement method | |
| CN208588329U (en) | A kind of novel micro- deformation optical fiber sensing device | |
| CN114111857A (en) | Vernier effect based optical fiber FPI cascaded MI sensing device | |
| CN207689366U (en) | A kind of four road integrated SPR liquid refractivity sensing devices | |
| CN203798737U (en) | Liquid pyridine qualitative detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190712 Address after: 511300 Atuchen (Tuming) Workshop, Xinhe Village, Xintang Town, Zengcheng District, Guangzhou City, Guangdong Province 3 Patentee after: Guangzhou top Sheng Yi Electronic Technology Co., Ltd. Address before: No. 83, Xiabeishan Village, Zhanyuan Street, Jiaojiang District, Taizhou City, Zhejiang Province, 318000 Patentee before: Zhang Qian |
|
| TR01 | Transfer of patent right |