CN103926019A - Optical fiber temperature sensor and manufacturing method thereof - Google Patents
Optical fiber temperature sensor and manufacturing method thereof Download PDFInfo
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- CN103926019A CN103926019A CN201410167876.5A CN201410167876A CN103926019A CN 103926019 A CN103926019 A CN 103926019A CN 201410167876 A CN201410167876 A CN 201410167876A CN 103926019 A CN103926019 A CN 103926019A
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 121
- 238000004519 manufacturing process Methods 0.000 title 1
- 239000000835 fiber Substances 0.000 claims abstract description 69
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 229920000642 polymer Polymers 0.000 claims abstract description 36
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 18
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 claims description 14
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 12
- 239000013047 polymeric layer Substances 0.000 claims description 12
- 239000004973 liquid crystal related substance Substances 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 11
- 239000010410 layer Substances 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 8
- 235000011187 glycerol Nutrition 0.000 claims description 6
- 239000004642 Polyimide Substances 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- 229920000728 polyester Polymers 0.000 claims description 5
- 229920001721 polyimide Polymers 0.000 claims description 5
- 229920000098 polyolefin Polymers 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 230000035945 sensitivity Effects 0.000 abstract description 7
- 238000005253 cladding Methods 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 238000000411 transmission spectrum Methods 0.000 abstract 2
- 238000001228 spectrum Methods 0.000 description 15
- 238000005260 corrosion Methods 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 7
- 239000002253 acid Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 6
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 6
- 239000004926 polymethyl methacrylate Substances 0.000 description 6
- 239000004568 cement Substances 0.000 description 5
- 239000011260 aqueous acid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention provides an optical fiber temperature sensor which comprises a multimode optical fiber without cladding. The multimode optical fiber is fixed to a polymer product at a certain curvature and dipped in liquid and the refractive index of the liquid is higher than the refractive index of a fiber core of the multimode optical fiber. The multimode optical fiber without the cladding is fixed to the polymer product at the certain curvature and dipped in the liquid with the high refractive index and the polymer product is expanded after being heated, so that the curvature of the optical fiber fixed to the polymer product is changed. A transmission spectrum of a composite device is detected at different temperatures and the temperature sensitivity of the device is obtained through the relation of transmission spectrum peak displacement and the temperature.
Description
Technical field
The technical field that the present invention relates to fibre optic temperature sensor, relates in particular to a kind of fibre optic temperature sensor and preparation method thereof.
Background technology
Sensor (English name: transducer/sensor) be a kind of pick-up unit, can experience measured information, and the information that detection can be experienced, be for conversion into according to certain rules the information output of electric signal or other desired forms, to meet the requirements such as transmission, processing, storage, demonstration, record and control of information.
Fibre Optical Sensor, because anti-electromagnetic interference (EMI), volume are little, be beneficial to the plurality of advantages such as operated from a distance, obtains large quantity research in engineering.Its basic functional principle is for sending into modulator by the light from light source through optical fiber, after parameter to be measured and the light that enters modulator zone are interacted, cause the optical property (as light intensity, wavelength, frequency, phase place, polarization state etc.) of light to change, be called modulated flashlight, through optical fiber, send into photo-detector again, after demodulation, obtain measured parameter.
Fibre optic temperature sensor is to utilize the spectrum of part material absorbing to vary with temperature and the principle that changes, analyzes the spectra real time temperature of Optical Fiber Transmission.At present, the structure of fibre optic temperature sensor has bragg grating (FBG), long period fiber grating (LPFG), Fabry-Perot interferometer and single mode-multi-mode-single mode (SMS) optical fiber etc.SMS optical fiber structure is a kind of novel optical fiber structure based on multimode optical fiber internal schema principle of interference, and one section of multimode optical fiber and two section single-mould fiber meltings are formed, and compares and other structures, and this structure has makes simple, low cost and other advantages.
For sensor, sensitivity is a crucial factor, and the temperature control of FBG is 0.01nm/ ℃, and LPFG is 0.15nm/ ℃, and common SMS structure is 0.01nm/ ℃.Therefore, though the sensor of SMS structure has many merits, its sensitivity is not high, and therefore, in prior art, large quantity research is all devoted to improve its sensitivity.Wu Qiang in 2010 etc. are published in research on Electronics Letters, and by crooked SMS optical fiber, to improve its temperature control be 0.032nm/ ℃.But its sensitivity is still not high.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of fibre optic temperature sensor and preparation method thereof, and fibre optic temperature sensor provided by the invention is highly sensitive.
The invention provides a kind of fibre optic temperature sensor, comprising:
Remove the multimode optical fiber of covering;
Described multimode optical fiber is fixed on polymer product with certain curvature;
Described multimode optical fiber is dipped in liquid, and the refractive index of described liquid is higher than the refractive index of described multimode optical fiber fibre core.
Preferably, described multimode optical fiber is fixed in polymeric frame with certain curvature, and described curvature is greater than 0.
Preferably, described multimode optical fiber is fixed between the first polymeric layer and the second polymer layer with certain curvature, and described curvature is greater than 0.
Preferably, described multimode optical fiber is fixed between the first polymeric layer and the second polymer layer with certain curvature, and described curvature equals 0, and described the first polymkeric substance is different with the thermal expansivity of the second polymkeric substance.
Preferably, described multimode optical fiber is fixed in polymer pipe with certain curvature, and described curvature is greater than 0.
Preferably, described multimode optical fiber is fixed on polymeric layer with certain curvature, and described curvature is greater than 0.
Preferably, described polymkeric substance is selected from a kind of in acrylic compounds resin, polyester, polyurethane, polyolefin and polyimide; Described liquid is selected from a kind of in benzene, carbon disulphide, glycerine and liquid crystal.
Preferably, the length of described multimode optical fiber is 0.5～5cm; The core diameter of described multimode optical fiber is 40～120 μ m.
The present invention also provides a kind of preparation method of fibre optic temperature sensor, comprises the steps:
Step a) is removed multimode optical fiber covering;
Step b) described multimode optical fiber is fixed on polymer product with certain curvature;
Step c) described multimode optical fiber is dipped in liquid, the refractive index of described liquid is higher than the refractive index of described multimode optical fiber fibre core.
Preferably, described polymkeric substance is selected from a kind of in acrylic compounds resin, polyester, polyurethane, polyolefin and polyimide; Described liquid is selected from a kind of in benzene, carbon disulphide, glycerine and liquid crystal.
Compared with prior art, the invention provides a kind of fibre optic temperature sensor, comprising: the multimode optical fiber of removing covering; Described multimode optical fiber is fixed on polymer product with certain curvature; Described multimode optical fiber is dipped in liquid, and the refractive index of described liquid is higher than the refractive index of described multimode optical fiber fibre core.The present invention by the multimode optical fiber that removes covering is fixed on polymer product with certain curvature and submergence and high refractive index liquid in, make polymer product expanded by heating cause the curvature of optical fiber fixed thereon to change, by measuring set composite seeing through under different temperatures, compose, by seeing through the relation of spectral peak shift and temperature, obtain the temperature control of this device.Experimental result shows, the sensitivity of the fibre optic temperature sensor that the present invention prepares is 6.5nm/ ℃.
Accompanying drawing explanation
Fig. 1 is structured optical fiber schematic diagram of the present invention;
Fig. 2 is the fibre optic temperature sensor structural representation that the embodiment of the present invention 1 or embodiment 2 prepare;
Fig. 3 is that fibre optic temperature sensor the seeing through under different temperatures that the embodiment of the present invention 1 prepares composed;
Fig. 4 is the fibre optic temperature sensor for preparing for the embodiment of the present invention 1 corresponding relation figure through spectrum peak position and temperature;
Fig. 5 is that device seeing through under different temperatures under exceptionally straight state that comparative example 1 of the present invention prepares composed;
Fig. 6 is that multimode optical fiber of the present invention is fixed on structural representation in polymer pipe;
Fig. 7 is that multimode optical fiber of the present invention is fixed on ELECTRODE WITH BILAYER POLYMERIC thing interlayer expanded by heating distortion schematic diagram;
Fig. 8 is that fibre optic temperature sensor the seeing through under different temperatures that the embodiment of the present invention 2 prepares composed;
Fig. 9 is the fibre optic temperature sensor for preparing for the embodiment of the present invention 2 corresponding relation figure through spectrum peak position and temperature;
Figure 10 is that the embodiment of the present invention 3 optical fiber seeing through under different distance composed;
Figure 11 is that the embodiment of the present invention 3 is simulated the corresponding relation figure that the fibre optic temperature sensor obtaining sees through spectrum peak position and temperature.
Embodiment
A fibre optic temperature sensor, comprising:
Remove the multimode optical fiber of covering;
Described multimode optical fiber is fixed on polymer product with certain curvature;
Described multimode optical fiber is dipped in liquid, and the refractive index of described liquid is higher than the refractive index of described multimode optical fiber fibre core.
The invention provides a kind of fibre optic temperature sensor, comprise the multimode optical fiber of removing covering.In the present invention, the length of described multimode optical fiber is preferably 0.5～5cm, more preferably 1～4cm; The core diameter of described multimode optical fiber is preferably 40～120 μ m, more preferably 50～100 μ m.The present invention does not limit the kind of described multimode optical fiber and model, as long as meet above-mentioned condition.In the present invention, described optical fiber is not limited, described optical fiber can be SMS optical fiber, and as shown in Figure 1, Fig. 1 is SMS structured optical fiber schematic diagram of the present invention to structure, and wherein 1 is the liquid of submergence SMS optical fiber multimode section; 2 is single-mode fiber, and 3 is multimode optical fiber.Multimode optical fiber of the present invention can be commercially available, model be commercially available all can, as can be 50 μ m/125 μ m according to core diameter and the integral diameter classification that adds covering, 62.5 μ m/125 μ m, MM-S105/125-15A, the mode of described removal covering is preferably acid corrosion method.Be specially multimode optical fiber is placed in to aqueous acid.Corrosion optical fiber solvent adopts hydrofluorite (HF) or BHF solution (HF+NH conventionally
4oH/HNO
3), described acid is preferably HF, and the percent by volume of described aqueous acid is preferably 20%～40%, and more preferably 30%.Described etching time is preferably 30min～100min.
In the present invention, described fibre optic temperature sensor comprises that multimode optical fiber is fixed on polymer product with certain curvature.The present invention does not limit for described polymer product, is preferably selected from polymer sheet, a kind of in polymeric frame, polymeric layer and polymer pipe.
The present invention does not limit for described fixed form, and wherein a kind of mode can be for being fixed on multimode optical fiber in polymeric frame with certain curvature, and described curvature is greater than 0.As shown in Figure 2, Fig. 2 is the fibre optic temperature sensor structural representation that the embodiment of the present invention 1 or embodiment 2 prepare; In Fig. 2,4 is multimode optical fiber, and 5 is polymeric frame, and 6 for inserting the groove of liquid, 7 optical cements that are fixed fiber.
Wherein a kind of mode can be fixed between the first polymeric layer and the second polymer layer with certain curvature for multimode optical fiber, and described curvature is greater than 0.In the case, the first polymeric layer and the second polymer layer can be the same or different, and the present invention does not limit this.
Wherein a kind of mode can be fixed between the first polymeric layer and the second polymer layer with certain curvature for described multimode optical fiber, and described curvature equals 0, and described the first polymkeric substance is different with the thermal expansivity of the second polymkeric substance.As shown in Figure 7, Fig. 7 is that multimode optical fiber of the present invention is fixed on ELECTRODE WITH BILAYER POLYMERIC thing interlayer expanded by heating distortion schematic diagram.
Wherein a kind of mode can be fixed in polymer pipe with certain curvature for described multimode optical fiber, and described curvature is greater than 0.As shown in Figure 6, Fig. 6 is that multimode optical fiber of the present invention is fixed on structural representation in polymer pipe; Wherein 4 is multimode optical fiber, and 8 is polymeric jacket.
Wherein a kind of mode can be fixed on polymeric layer with certain curvature for multimode optical fiber, and described curvature is greater than 0.
In the present invention, described polymkeric substance is preferably selected from acrylic compounds resin, polyester, and polyurethane, polyolefin, polyimide etc., as: a kind of in polymethylmethacrylate, polycarbonate and polystyrene.
Fibre optic temperature sensor of the present invention also comprises described multimode optical fiber is dipped in liquid, and the refractive index of described liquid is higher than the refractive index of described multimode optical fiber fibre core.Described liquid is preferably selected from a kind of in benzene, carbon disulphide, glycerine and liquid crystal, wherein in liquid crystal, is preferably E7.
The present invention also provides a kind of preparation method of fibre optic temperature sensor, comprises the steps:
Step a) is removed multimode optical fiber covering;
Step b) described multimode optical fiber is fixed on polymer product with certain curvature;
Step c) described multimode optical fiber is dipped in liquid, the refractive index of described liquid is higher than the refractive index of described multimode optical fiber fibre core.
In the present invention, first multimode optical fiber is removed to covering.The length of described multimode optical fiber is preferably 0.5～5cm, more preferably 1～4cm; The core diameter of described multimode optical fiber is preferably 40～120 μ m, more preferably 50～100 μ m.The present invention does not limit the kind of described multimode optical fiber and model, as long as meet above-mentioned condition.In the present invention, described multimode optical fiber can be commercially available, and model is commercially available all can, according to core diameter, can be 50 μ m/125 μ m with the integral diameter classification that adds covering, 62.5 μ m/125 μ m, MM-S105/125-15A, the mode of described removal covering is preferably acid corrosion method.Be specially multimode optical fiber is placed in to aqueous acid.Described acid is preferably HF, and the percent by volume of described aqueous acid is preferably 20%～40%, and more preferably 30%.Described etching time is preferably 30min～100min.
Remove after covering, described multimode optical fiber is fixed on polymer product with certain curvature.The present invention does not limit for described polymer product, is preferably selected from polymer sheet, a kind of in polymeric frame, polymeric layer and polymer pipe.Of the present invention as described above for fixed form and structure, do not repeat them here.
After fixing, described multimode optical fiber is dipped in liquid, the refractive index of described liquid is higher than the refractive index of described multimode optical fiber fibre core.Described liquid is preferably selected from a kind of in benzene, carbon disulphide, glycerine and liquid crystal, wherein in liquid crystal, is preferably E7.
The present invention is by being fixed on certain curvature the multimode optical fiber that removes covering on polymer product and being immersed in high refractive index liquid, make polymer product expanded by heating cause the curvature of optical fiber fixed thereon to change, by measuring this device seeing through under different temperatures, compose, by seeing through the relation of spectral peak shift and temperature, obtain the temperature control of this device.
Device of the present invention can be applied to prepare index meter or thermometer etc., highly sensitive.Be specifically as follows under same temperature, after demarcating in advance well, inject different liquids, can measure by output spectra the refractive index of filling liquid, become an easy index meter.Inject the liquid of known refractive index, after demarcating in advance well under different temperatures, this device is placed under a certain environment temperature, according to the temperature of the known environment of output spectra, can make like this thermometer.
In order to further illustrate the present invention, below in conjunction with embodiment, fibre optic temperature sensor provided by the invention and preparation method thereof is described in detail.
Embodiment 1
First remove multimode optical fiber (MM-S105/125-15A) covering, the method for generally removing fibre cladding is with acid corrosion, and concrete operation method is: by long, be fused between two section single-mould fibers for the multimode optical fiber of 1cm.By 30% HF aqueous corrosion 30min to 100 μ m for the multimode section of SMS optical fiber, remove covering.By the multimode of having corroded liquid crystal (E7, n=1.546,25 ℃) submergence for section.Get polymethylmethacrylate (PMMA) polymeric frame, there being the two ends of the SMS optical fiber of certain curvature to be fixed on frame with optical cement, as shown in Figure 2, Fig. 2 is the fibre optic temperature sensor structural representation that the embodiment of the present invention 1 or embodiment 2 prepare.In Fig. 2,4 is SMS optical fiber, and 5 is polymeric frame, and 6 for inserting the groove of liquid, 7 optical cements that are fixed fiber.
This fibre optic temperature sensor is placed in to constant temperature control box, change temperature and keep 5min at 51 ℃～70 ℃ each temperature, test respectively the spectrum that sees through under different temperatures, experimental result as shown in Figure 3 and Figure 4, Fig. 3 is that the fibre optic temperature sensor for preparing of the embodiment of the present invention 1 sees through spectrum under different temperatures, and Fig. 4 is the fibre optic temperature sensor for preparing for the embodiment of the present invention 1 corresponding relation figure through spectrum peak position and temperature.As can be seen from Figure 3, when temperature raises, peak moves toward long wavelength's direction, and during cooling, process is reversible.Experimental result shows, the fibre optic temperature sensor temperature control that the embodiment of the present invention 1 prepares is 6.5nm/ ℃.
Comparative example 1
First remove multimode optical fiber (MM-S105/125-15A) covering, the method for generally removing fibre cladding is with acid corrosion, and concrete operation method is: by long, be fused between two section single-mould fibers for the multimode optical fiber of 1cm.By 30% HF aqueous corrosion 30min to 100 μ m for the multimode section of SMS optical fiber, remove covering.Multimode section is around with using liquid crystal E7 (n=1.546,25 ℃) submergence.The SMS optical fiber having corroded is fixed on to polymeric frame (PMMA) upper, tests this structure seeing through at 20 ℃ and 100 ℃ and compose, as shown in Figure 5, Fig. 5 is that device seeing through under different temperatures under exceptionally straight state that comparative example 1 of the present invention prepares composed to result.According to Fig. 5, can find out the displacement that can't occur peak under exceptionally straight state.
Embodiment 2
By long, for being fused to, the multimode optical fiber of 1cm between two section single-mould fibers, obtains SMS optical fiber.By 30% HF aqueous corrosion 30min to 100 μ m for the multimode section of above-mentioned SMS optical fiber, remove covering.By the multimode of having corroded carbon disulphide (n=1.6276,25 ℃) submergence for section.Get PMMA polymeric frame, there being the two ends of the SMS optical fiber of certain curvature to be fixed on plate with optical cement, as shown in Figure 2, Fig. 2 is the fibre optic temperature sensor structural representation that the embodiment of the present invention 1 or embodiment 2 prepare.In Fig. 2,4 is SMS optical fiber, and 5 is polymeric frame, and 6 for inserting the groove of liquid, 7 optical cements that are fixed fiber.
Fibre optic temperature sensor is placed in to constant temperature oven, change temperature and keep 5min at 59 ℃～82 ℃ each temperature, test respectively the spectrum that sees through under different temperatures, experimental result as shown in Figure 8 and Figure 9, Fig. 8 is that the fibre optic temperature sensor for preparing of the embodiment of the present invention 2 sees through spectrum under different temperatures, and Fig. 9 is the fibre optic temperature sensor for preparing for the embodiment of the present invention 2 corresponding relation figure through spectrum peak position and temperature.Experimental result shows, the fibre optic temperature sensor temperature control that the embodiment of the present invention 2 prepares is 3.9nm/ ℃.
Embodiment 3
By long, be fused between two section single-mould fibers for the multimode optical fiber of 1cm.By 30% HF aqueous corrosion 30min to 100 μ m for the multimode section of above-mentioned SMS optical fiber, remove covering.Then by the multimode section liquid crystal submergence of having corroded.Optical fiber two ends are placed in to three-dimensional transfer table, can change the curvature of optical fiber by moving three dimension transfer table, as shown in figure 10, if Figure 10 is that the embodiment of the present invention 3 optical fiber see through spectrum under different distance, experimental result shows result, and sensitivity is 0.56nm/ μ m.
Above-mentioned optical fiber is placed between two layers of polymers to upper strata PMMA (thermal expansivity 6 * 10
-5), lower floor is polystyrene (thermal expansivity 8 * 10
-5), upper and lower two-layer during room temperature is all the length of 10.0cm, optics glue-line is 0.2mm.As shown in Figure 7, there is optical fiber moves when curling distance bound between the two deformation in alternating temperature, is reduced to the two mean value.Obtaining analog variation curve is Figure 11, and Figure 11 is that the embodiment of the present invention 3 is simulated the corresponding relation figure that the fibre optic temperature sensor obtaining sees through spectrum peak position and temperature.Experimental result shows, the fibre optic temperature sensor temperature control that the embodiment of the present invention 3 prepares is 3.92nm/ ℃.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a fibre optic temperature sensor, is characterized in that, comprising:
Remove the multimode optical fiber of covering;
Described multimode optical fiber is fixed on polymer product with certain curvature;
Described multimode optical fiber is dipped in liquid, and the refractive index of described liquid is higher than the refractive index of described multimode optical fiber fibre core.
2. fibre optic temperature sensor according to claim 1, is characterized in that, described multimode optical fiber is fixed in polymeric frame with certain curvature, and described curvature is greater than 0.
3. fibre optic temperature sensor according to claim 1, is characterized in that, described multimode optical fiber is fixed between the first polymeric layer and the second polymer layer with certain curvature, and described curvature is greater than 0.
4. fibre optic temperature sensor according to claim 1, it is characterized in that, described multimode optical fiber is fixed between the first polymeric layer and the second polymer layer with certain curvature, and described curvature equals 0, and described the first polymkeric substance is different with the thermal expansivity of the second polymkeric substance.
5. fibre optic temperature sensor according to claim 1, is characterized in that, described multimode optical fiber is fixed in polymer pipe with certain curvature, and described curvature is greater than 0.
6. fibre optic temperature sensor according to claim 1, is characterized in that, described multimode optical fiber is fixed on polymeric layer with certain curvature, and described curvature is greater than 0.
7. according to the fibre optic temperature sensor described in claim 1～6 any one, it is characterized in that, described polymkeric substance is selected from a kind of in acrylic compounds resin, polyester, polyurethane, polyolefin and polyimide; Described liquid is selected from a kind of in benzene, carbon disulphide, glycerine and liquid crystal.
8. according to the fibre optic temperature sensor described in claim 1～6 any one, it is characterized in that, the length of described multimode optical fiber is 0.5～5cm; The core diameter of described multimode optical fiber is 40～120 μ m.
9. a preparation method for fibre optic temperature sensor, comprises the steps:
Step a) is removed multimode optical fiber covering;
Step b) described multimode optical fiber is fixed on polymer product with certain curvature;
Step c) described multimode optical fiber is dipped in liquid, the refractive index of described liquid is higher than the refractive index of described multimode optical fiber fibre core.
10. the preparation method of fibre optic temperature sensor according to claim 8, is characterized in that, described polymkeric substance is selected from a kind of in acrylic compounds resin, polyester, polyurethane, polyolefin and polyimide; Described liquid is selected from a kind of in benzene, carbon disulphide, glycerine and liquid crystal.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526751A (en) * | 2016-11-29 | 2017-03-22 | 西安电子科技大学 | Temperature control tunable optical fiber filter based on micro-nano optical fibers and manufacturing method |
| WO2017114084A1 (en) * | 2015-12-31 | 2017-07-06 | 段兆祥 | Manufacturing method for waterproof and moisture-proof temperature sensor, and prepared temperature sensor |
| CN110702266A (en) * | 2019-11-15 | 2020-01-17 | 哈尔滨理工大学 | Packaging method of high-temperature-resistant FBG temperature sensor |
| CN112649402A (en) * | 2020-11-24 | 2021-04-13 | 哈尔滨工程大学 | Liquid crystal laser type VOC gas optical fiber sensing device and manufacturing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1963400A (en) * | 2006-11-16 | 2007-05-16 | 国家纳米技术与工程研究院 | Fibre optic sensor for measuring temperature and refractive index of liquid contemporarily |
| CN103134775A (en) * | 2011-11-30 | 2013-06-05 | 中国计量学院 | Optical fiber liquid refractive index and temperature sensor |
-
2014
- 2014-04-24 CN CN201410167876.5A patent/CN103926019B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1963400A (en) * | 2006-11-16 | 2007-05-16 | 国家纳米技术与工程研究院 | Fibre optic sensor for measuring temperature and refractive index of liquid contemporarily |
| CN103134775A (en) * | 2011-11-30 | 2013-06-05 | 中国计量学院 | Optical fiber liquid refractive index and temperature sensor |
Non-Patent Citations (6)
| Title |
|---|
| L.YANG.ET AL.: ""Guided-mode-leaky-mode-guided-mode fiber structure and its application to high refractive index sensing"", 《OPTICS LETTERS》, vol. 37, 15 December 2012 (2012-12-15) * |
| QIANG WU.ET AL.: ""Bent SMS Fiber Structure for Temperature Measurement"", 《ELECTRONICS LETTERS》, vol. 46, no. 16, 1 January 2010 (2010-01-01) * |
| YUAN GONG.ET AL.: ""All-fiber Curvature Sensor Based on Multimode Interference"", 《PHOTONICS TECHNOLOGY LETTERS》, vol. 23, no. 11, 7 May 2011 (2011-05-07) * |
| YUJUAN ZHANG ET AL: ""Super-High Sensitivity of Fiber Temperature Sensor Based on Leaky-Mode Bent SMS Structure"", 《IEEE PHOTONICS TECHNOLOGY LETTERS》 * |
| 薛林林: "复模展开方法及其在光纤器件分析中的应用", 《中国博士学位论文全文库信息科技辑》, no. 10, 15 October 2013 (2013-10-15), pages 67 - 77 * |
| 赵方: ""SMS结构型光纤传感器的研究"", 《中国优秀硕士学位论文全文数据库信息科技辑》, no. 6, 15 June 2011 (2011-06-15), pages 28 - 34 * |
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| CN106526751A (en) * | 2016-11-29 | 2017-03-22 | 西安电子科技大学 | Temperature control tunable optical fiber filter based on micro-nano optical fibers and manufacturing method |
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