CN108775973A - A kind of thermometry of the photic fuel factor of material - Google Patents
A kind of thermometry of the photic fuel factor of material Download PDFInfo
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- CN108775973A CN108775973A CN201810710070.4A CN201810710070A CN108775973A CN 108775973 A CN108775973 A CN 108775973A CN 201810710070 A CN201810710070 A CN 201810710070A CN 108775973 A CN108775973 A CN 108775973A
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- fiber grating
- offset
- photic
- thermometry
- fuel factor
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- 239000000463 material Substances 0.000 title claims abstract description 69
- 239000000446 fuel Substances 0.000 title claims abstract description 24
- 238000004861 thermometry Methods 0.000 title claims abstract description 21
- 239000000835 fiber Substances 0.000 claims abstract description 70
- 239000013307 optical fiber Substances 0.000 claims abstract description 11
- 230000001678 irradiating effect Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 17
- 238000000576 coating method Methods 0.000 claims description 5
- 238000000691 measurement method Methods 0.000 claims description 5
- 239000002086 nanomaterial Substances 0.000 claims description 5
- 238000001228 spectrum Methods 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims 2
- 238000005259 measurement Methods 0.000 abstract description 17
- 238000011897 real-time detection Methods 0.000 abstract description 4
- 239000000758 substrate Substances 0.000 abstract description 4
- 238000009529 body temperature measurement Methods 0.000 abstract description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 16
- 230000000694 effects Effects 0.000 description 12
- 229910052709 silver Inorganic materials 0.000 description 10
- 239000004332 silver Substances 0.000 description 10
- 239000002073 nanorod Substances 0.000 description 6
- 238000005253 cladding Methods 0.000 description 4
- 238000001069 Raman spectroscopy Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000012876 topography Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The present invention discloses a kind of thermometry of the photic fuel factor of material, is related to technical field of temperature measurement comprising：Using laser irradiating fiber grating, the first offset Δ λ that fiber grating temperature under laser irradiation increases caused resonant wavelength is measured1；Detected materials are coated on to the surface of fiber grating, and use same laser irradiating fiber grating, measure the second offset Δ λ of fiber grating resonant wavelength2；According to the first offset Δ λ1With the second offset Δ λ2, determine the temperature variation that laser irradiation makes detected materials generate.The present invention proposes a kind of thermometry of the photic fuel factor of material, simple in structure, be easily achieved, high certainty of measurement, is suitable for the real-time detection to part photo-thermal temperature change at the substrate interfaces such as material and optical fiber.
Description
Technical field
The present invention relates to technical field of temperature measurement more particularly to a kind of thermometries of the photic fuel factor of material.
Background technology
Photo-thermal effect is a kind of critical nature of material.The photo-thermal effect of material has in fields such as therapeutic treatment, magnetic storages
There is good application prospect.
The temperature change of the photic fuel factor of traditional material measures generally using thermocouple, compensation by thermistor, heat
The equipment such as imager, this kind of sensor sensitivity is relatively low, cannot achieve the measurement of microcell local temperature.In order to realize that material photo-thermal is led
The measurement of the microcell local temperature of cause mainly has Through Optical Interference Spectra, thermal lens method, outside photo-thermal it has been developed that measurement method
Poor method, these three methods have been respectively adopted the interference that local temperature increases caused by the variation such as caused phase, refractive index and have believed
Number and scattering and the variation of projection optical signal monitor, precision is higher, but equipment is accurate expensive.In addition there are fluorescence and Raman point
Sub- sonde method realizes the indirect measurement of local temperature using the temperature sensitive feature of the fluorescence and Raman signal of sensitive molecule.
The measurement of this method needs very high to probe molecule requirement, needs accurately to demarcate temperature.
In conclusion the temperature change measurement method of the photic fuel factor of material has the disadvantage that at present：The sensitivity of measurement
Spend it is relatively low, cannot achieve the measurement of microcell local temperature, measuring apparatus is expensive or realizes that difficulty is high.
Invention content
Technical problem to be solved by the present invention lies in for the above-mentioned deficiency of the prior art, propose that a kind of material is photic
The thermometry of fuel factor, it is simple in structure, be easily achieved, high certainty of measurement, it is suitable for substrates circle such as material and optical fiber
The real-time detection of the temperature change of local light thermal effect at face.
In order to solve the above-mentioned technical problem, present applicant proposes a kind of thermometries of the photic fuel factor of material.
The thermometry of the photic fuel factor of material includes：
Using laser irradiating fiber grating, measures fiber grating temperature under laser irradiation and increase caused resonant wavelength
First offset Δ λ1；
Detected materials are coated on to the surface of fiber grating, and use same laser irradiating fiber grating, measure optical fiber
Second offset Δ λ of grating resonance wavelength2；
According to the first offset Δ λ1With the second offset Δ λ2, determine that the temperature that laser irradiation makes detected materials generate becomes
Change amount.
Optionally, the resonant wavelength is the wavelength of the reflected light reflected by fiber grating.
Optionally, the first offset Δ λ1With the second offset Δ λ2Measurement method be：The light that wideband light source is sent out
Input spectrum analyzer is reflected through fiber grating, spectroanalysis instrument measures the offset of reflected light.
Optionally, the temperature variation calculation formula that laser irradiation makes detected materials generate is as follows：
Wherein, Δ T is the temperature variation that laser irradiation makes detected materials generate；Δλ1For the first offset of resonant wavelength
Amount；Δλ2For the second offset of resonant wavelength；S is optic fiber grating wavelength temperature-sensitivity coefficient, i.e. ambient temperature often changes 1 DEG C
The offset that fiber grating resonant wavelength generates.
Optionally, the fiber grating is Bragg grating or long-period gratings.
Optionally, the detected materials are metal, semiconductor microactuator nanostructure or film.
Optionally, the surface that detected materials are coated on to fiber grating is specially：
By coating process, czochralski method, dripping method, be physically or chemically vapor-deposited is coated on fiber grating by detected materials
Surface.
The present invention proposes a kind of thermometry of the photic fuel factor of material, simple in structure, be easily achieved, measure essence
Degree is high, is suitable for the real-time detection to part photo-thermal temperature change at the substrate interfaces such as material and optical fiber.The measurement side of the application
Method is specially adapted to the measurement of the local temperature of micro Nano material under photo-thermal effect.
Description of the drawings
Fig. 1 is the application scenarios according to the thermometry of the photic fuel factor of material shown in an exemplary embodiment
Figure.
Fig. 2 is the flow chart according to the thermometry of the photic fuel factor of material shown in an exemplary embodiment.
Fig. 3 is the curve graph of the reflection wavelength and temperature relation according to the fiber grating shown in an exemplary embodiment.
Fig. 4 is according to the detected materials Nano silver grain for being coated on fiber grating surface shown in an exemplary embodiment
Scanning electron microscope (SEM) photograph.
Fig. 5 is according to the resonant wavelength offset before and after the fiber grating cladding Nano silver grain shown in an exemplary embodiment
Measure the change curve with laser irradiation time.
Fig. 6 is the scanning electron microscope according to the Silver nanorod for being coated on fiber grating surface shown in an exemplary embodiment
Figure.
Fig. 7 is according to the resonant wavelength offset before and after the fiber grating cladding Silver nanorod shown in an exemplary embodiment
With the change curve of laser irradiation time.
Specific implementation mode
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
It is also understood that specific embodiment described herein is used only for understanding the present invention, it is not used to limit this hair
It is bright.
Fig. 1 is the application scenarios according to the thermometry of the photic fuel factor of material shown in an exemplary embodiment
Figure, is related to wideband light source 11, fiber grating 13, spectroanalysis instrument 12, detected materials 14, laser 15.
Laser 15 is used for irradiation optical fiber grating 13 and detected materials 14, and fiber grating 13 and detected materials 14 is made to be imitated because of photo-thermal
Temperature is answered to increase.
The light that wideband light source 11 is sent out reflects input spectrum analyzer 12 through fiber grating 13, and spectroanalysis instrument 12 is measured
The wavelength shift of reflected light.
Before and after coating detected materials 14, using 15 irradiation optical fiber grating 13 of laser, and measured by spectroanalysis instrument 12
Go out the wavelength shift of reflected light, and then calculates the temperature variation of detected materials 14.
Fig. 2 is according to the flow chart of the thermometry of the photic fuel factor of material shown in an exemplary embodiment, in detail
It states as follows：
Step S201, using laser irradiating fiber grating, measurement fiber grating is under laser irradiation caused by temperature raising
First offset of resonant wavelength.
In the present embodiment, laser illumination fiber grating can be used；Since fiber grating is under laser irradiation, light is generated
Fuel factor causes temperature to increase so that the resonant wavelength of fiber grating generates offset.
Detected materials are coated on the surface of fiber grating, and use same laser irradiating fiber grating by step S202,
Measure the second offset of fiber grating resonant wavelength.
In the present embodiment, the detected materials are metal, semiconductor microactuator nanostructure or film.
In the present embodiment, the surface that detected materials are coated on to fiber grating is specially：
By coating process, czochralski method, dripping method, be physically or chemically vapor-deposited is coated on fiber grating by detected materials
Surface.
When reusing same laser irradiating fiber grating, detected materials change because photo-thermal effect generates temperature.
It should be noted that the second offset is that fiber grating and detected materials are jointly caused.
In the present embodiment, the first offset is denoted as Δ λ1, the second offset is denoted as Δ λ2；First offset Δ λ1For light
The offset of resonant wavelength caused by Wen Sheng caused by the photo-thermal effect of fine grating；Second offset Δ λ2For fiber grating and wait for
The offset for the resonant wavelength measured and monitored the growth of standing timber caused by Wen Sheng caused by the photo-thermal effect of material.
Step S203 determines the temperature that laser irradiation makes detected materials generate according to the first offset and the second offset
Variable quantity.
It should be noted that the resonant wavelength of fiber grating shifts when ambient temperature changes, pass through resonant wavelength
Offset can calculate temperature variation.
First offset Δ λ1By causing for fiber grating photo-thermal effect, the second offset Δ λ2By fiber grating and to be measured
The photo-thermal effect of material causes jointly.Second offset Δ λ2Subtract the first offset Δ λ1The photo-thermal effect of detected materials can be obtained
The offset of resonant wavelength caused by answering.
Further, the temperature variation calculation formula that laser irradiation makes detected materials generate is as follows：
Wherein, Δ T is the temperature variation that laser irradiation makes detected materials generate；Δλ1For the first offset of resonant wavelength
Amount；Δλ2For the second offset of resonant wavelength；S is optic fiber grating wavelength temperature-sensitivity coefficient, i.e. ambient temperature often changes 1 DEG C
The offset that fiber grating resonant wavelength generates.
In the present embodiment, the resonant wavelength is the wavelength of the reflected light reflected by fiber grating.
In the present embodiment, the first offset Δ λ1With the second offset Δ λ2Measurement method be：Wideband light source is sent out
The light gone out reflects input spectrum analyzer through fiber grating, and spectroanalysis instrument measures the offset of reflected light.
In the present embodiment, the fiber grating is Bragg grating or long-period gratings.
In the present embodiment, Bragg grating can be used, Fig. 3 is the fiber grating shown according to an exemplary embodiment
The curve graph of reflection wavelength and temperature relation；In the graph, abscissa is temperature, and ordinate is resonant wavelength；Light as a result,
Fine grating wavelength temperature-sensitivity coefficient S is 0.0042nm/ DEG C, i.e. ambient temperature often changes 1 DEG C of fiber grating resonant wavelength and generates
0.0042nm/ DEG C of offset.
For convenience of description, two practical measuring examples are present embodiments provided, details are as follows：
Fig. 4 is according to the detected materials Nano silver grain for being coated on fiber grating surface shown in an exemplary embodiment
Scanning electron microscope (SEM) photograph.Fig. 5 be fiber grating cladding Nano silver grain before and after resonant wavelength offset with laser irradiation time change
Change curve graph.
In Figure 5, before FBG curves are fiber grating coated with silver on surface nano-particle, resonant wavelength offset is shone with laser
Penetrate the change curve of time；FBG+`AgNPs curves are resonant wavelength offset after fiber grating coated with silver on surface nano-particle
With the change curve of laser irradiation time.
In the embodiment of the present application, the power of laser is 135nw, wavelength 442nm.
According to measurement result, detected materials Nano silver grain is calculated according to measurement result and is caused in the photo-thermal of optical fiber surface
Temperature change is 3.18 DEG C.
In addition, Nano silver grain to be measured is coated on fiber grating surface with dripping method, surface topography is as shown in Figure 4.
Fig. 6 is the scanning electron microscope according to the Silver nanorod for being coated on fiber grating surface shown in an exemplary embodiment
Figure.Fig. 7 be fiber grating cladding Silver nanorod before and after resonant wavelength offset with laser irradiation time change curve.
In the figure 7, before FBG curves are fiber grating coated with silver on surface nanometer rods, resonant wavelength offset is with laser irradiation
The change curve of time；FBG+Ag noisc rating numbers is after fiber grating coated with silver on surface nanometer rods, resonant wavelength offset are with laser
The change curve of irradiation time.
In the embodiment of the present application, the power of laser is 135nw, wavelength 442nm.
According to measurement result, detected materials Silver nanorod is calculated according to measurement result and causes temperature in the photo-thermal of optical fiber surface
Degree variation is 8.13 DEG C.
In addition, Silver nanorod to be measured is coated on fiber grating surface with dripping method, surface topography is as shown in Figure 6.
Detected materials are coated on fiber grating by the application by the method for coating, dropwise addition, lifting, physics or vapor deposition
Surface.Additional laser excitation records the variation of optical fiber grating resonance peak position, and fiber grating itself is removed after obtaining temperature change
Photo-thermal causes temperature change, final to obtain local temperature variation in interface caused by detected materials photo-thermal effect.
The present invention proposes a kind of thermometry of the photic fuel factor of material, simple in structure, be easily achieved, measure essence
Degree is high, is suitable for the real-time detection to part photo-thermal temperature change at the substrate interfaces such as material and optical fiber.The measurement side of the application
Method is specially adapted to the measurement of the local temperature of micro Nano material under photo-thermal effect.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (7)
1. a kind of thermometry of the photic fuel factor of material, which is characterized in that including：
Using laser irradiating fiber grating, measures fiber grating temperature under laser irradiation and increase the first of caused resonant wavelength
Offset Δ λ1；
Detected materials are coated on to the surface of fiber grating, and use same laser irradiating fiber grating, measure fiber grating
Second offset Δ λ of resonant wavelength2；
According to the first offset Δ λ1With the second offset Δ λ2, determine the temperature variation that laser irradiation makes detected materials generate.
2. the thermometry of the photic fuel factor of material according to claim 1, which is characterized in that the resonant wavelength
For the wavelength of the reflected light by fiber grating reflection.
3. the thermometry of the photic fuel factor of material according to claim 1 or 2, which is characterized in that described first
Offset Δ λ1With the second offset Δ λ2Measurement method be：The light that wideband light source is sent out reflects input spectrum through fiber grating
Analyzer, spectroanalysis instrument measure the offset of reflected light.
4. the thermometry of the photic fuel factor of material according to claim 1, which is characterized in that laser irradiation makes to wait for
The temperature variation calculation formula that material generates of measuring and monitoring the growth of standing timber is as follows：
Wherein, Δ T is the temperature variation that laser irradiation makes detected materials generate；Δλ1For the first offset of resonant wavelength；Δ
λ2For the second offset of resonant wavelength；S is optic fiber grating wavelength temperature-sensitivity coefficient, i.e. ambient temperature often changes 1 DEG C of optical fiber
The offset that grating resonance wavelength generates.
5. the thermometry of the photic fuel factor of material according to claim 1, which is characterized in that the fiber grating
For Bragg grating or long-period gratings.
6. the thermometry of the photic fuel factor of material according to claim 1, which is characterized in that the detected materials
For metal, semiconductor microactuator nanostructure or film.
7. the thermometry of the photic fuel factor of material according to claim 1, which is characterized in that described to wait measuring and monitoring the growth of standing timber
The surface that material is coated on fiber grating is specially：
By coating process, czochralski method, dripping method, being physically or chemically vapor-deposited is coated on detected materials in the table of fiber grating
Face.
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| CN201810710070.4A CN108775973B (en) | 2018-07-02 | 2018-07-02 | Temperature measurement method for photo-thermal effect of material |
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| CN201810710070.4A CN108775973B (en) | 2018-07-02 | 2018-07-02 | Temperature measurement method for photo-thermal effect of material |
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|---|---|---|---|---|
| US20120105932A1 (en) * | 2009-09-21 | 2012-05-03 | Nikolay Ledentsov | Optoelectronic device with controlled temperature dependence of the emission wavelength and method of making same |
| CN202433123U (en) * | 2012-02-11 | 2012-09-12 | 宁波工程学院 | Device using long period fiber Bragg grating to measure temperatures and refractive indexes in real time |
| CN203163914U (en) * | 2013-03-29 | 2013-08-28 | 武汉理工光科股份有限公司 | Fiber grating differential type dynamometer capable of achieving self temperature compensation |
| CN105258716A (en) * | 2015-09-30 | 2016-01-20 | 南京航空航天大学 | L-shaped fiber grating sensor and application thereof |
| CN108225603A (en) * | 2017-12-29 | 2018-06-29 | 北京信息科技大学 | Based on LPFG and the cascade two-parameter fibre optical sensors of FBG and preparation method thereof |
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2018
- 2018-07-02 CN CN201810710070.4A patent/CN108775973B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120105932A1 (en) * | 2009-09-21 | 2012-05-03 | Nikolay Ledentsov | Optoelectronic device with controlled temperature dependence of the emission wavelength and method of making same |
| CN202433123U (en) * | 2012-02-11 | 2012-09-12 | 宁波工程学院 | Device using long period fiber Bragg grating to measure temperatures and refractive indexes in real time |
| CN203163914U (en) * | 2013-03-29 | 2013-08-28 | 武汉理工光科股份有限公司 | Fiber grating differential type dynamometer capable of achieving self temperature compensation |
| CN105258716A (en) * | 2015-09-30 | 2016-01-20 | 南京航空航天大学 | L-shaped fiber grating sensor and application thereof |
| CN108225603A (en) * | 2017-12-29 | 2018-06-29 | 北京信息科技大学 | Based on LPFG and the cascade two-parameter fibre optical sensors of FBG and preparation method thereof |
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