CN209043483U - A kind of superhigh temperature optical sensor based on sapphire pipe and sapphire sheet - Google Patents
A kind of superhigh temperature optical sensor based on sapphire pipe and sapphire sheet Download PDFInfo
- Publication number
- CN209043483U CN209043483U CN201821683345.1U CN201821683345U CN209043483U CN 209043483 U CN209043483 U CN 209043483U CN 201821683345 U CN201821683345 U CN 201821683345U CN 209043483 U CN209043483 U CN 209043483U
- Authority
- CN
- China
- Prior art keywords
- sapphire
- pipe
- optical fiber
- sheet
- sapphire sheet
- 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
- 229910052594 sapphire Inorganic materials 0.000 title claims abstract description 127
- 239000010980 sapphire Substances 0.000 title claims abstract description 127
- 230000003287 optical effect Effects 0.000 title claims abstract description 33
- 239000013307 optical fiber Substances 0.000 claims abstract description 48
- 239000000835 fiber Substances 0.000 claims abstract description 7
- 238000013461 design Methods 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000000523 sample Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
- 238000012360 testing method Methods 0.000 abstract description 3
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 230000005457 Black-body radiation Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000644 propagated effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model discloses a kind of superhigh temperature optical sensor based on sapphire pipe and sapphire sheet, including single mode or multimode fibre, optical fiber collimator, sapphire pipe, sapphire sheet；Optical fiber is set to the front end of optical fiber collimator, and the end of optical fiber collimator is embedded in the front end of sapphire pipe, and optical fiber collimator and optical propagation direction are parallel to the axial direction of sapphire pipe；The sapphire sheet is set to the end of sapphire pipe, axial direction of the sapphire sheet perpendicular to sapphire pipe.The utility model can accurately and stably measure temperature under room temperature to 2000 degree or so temperature environments due to sapphire high-temperature stability using such sensor using sapphire pipe combination sapphire sheet.The utility model structure is simple, signal stabilization, tests sensitive accurate, and probe component ensure that the Stability and veracity used under high temperature without using techniques such as bonding or plated films, realizes under high temperature accurately and reliably temperature sensing.
Description
Technical field
The utility model relates to optic temperature sensor technical fields, more particularly to one kind to be based on sapphire pipe and sapphire
The superhigh temperature optical sensor of piece.
Background technique
There is good insulation, electromagnetism interference, high temperature resistant, multiplexing using the optical interferometric sensor of optical fiber transmission signal
Property stability feature well.It can apply well in high temperature, inflammable and explosive, strong electromagnetic, under the adverse circumstances such as nuclear radiation.
Optical sensor mainly has interference-type, grating type and several classes of black body radiation type in a high temperauture environment at present.Grating
Type sensor mainly includes Bragg grating sensor, long-period grating sensor.This kind of sensor uses laser writing grating,
Can be realized temperature sensing, but grating will fade away at high temperature, transducing signal also can gradually decay down to disappearance, so
This type optical fiber is not suitable under 300 degree or more (ultraviolet laser inscription gratings) or 700 degree or more (femtosecond laser inscription grating) environment
Thermometric.The production and all more complicated, the higher cost of calibration of blackbody radiation sensors, testing precision is not also high, is actually answering
It is subject to many limitations in.Under nearly 2000 degree of high temperature, ambient noise can cause to seriously affect to thermometric accuracy, thus uncomfortable
Close the high-temperature measurement environment of this paper Special attention will be given to.
Utility model content
The utility model provides a kind of superhigh temperature optical sensor based on sapphire pipe and sapphire sheet, this is a kind of
High temperature resistant, structure is simple, and thermometric is accurate, the simple mature temperature sensor of signal processing.
To achieve the above object, the utility model takes following technical solution:
A kind of superhigh temperature optical sensor based on sapphire pipe and sapphire sheet, comprising: sapphire pipe, sapphire sheet,
Optical fiber and optical fiber collimator；Optical fiber is set to the front end of optical fiber collimator, before the end of optical fiber collimator is embedded in sapphire pipe
The optical propagation direction of end, optical fiber collimator and sapphire pipe one optical channel of composition, optical fiber collimator and optical channel is parallel
In the axial direction of sapphire pipe；Sapphire sheet is set to the end of sapphire pipe, and the sapphire sheet is perpendicular to sapphire pipe
It is axial.
The outer diameter of the optical fiber collimator and the internal diameter of sapphire pipe match.
The sapphire sheet is set to the end of sapphire pipe by welding mode.Alternatively, close to sapphire pipe end
One slot position of place's processing, sapphire sheet is caught in slot position.
Former and later two interfaces of the sapphire sheet can be reflected, to constitute an optical interdferometer, the optics is dry
Interferometer is in the end of entire temperature sensor, can protrude into environment to be measured.
The light of certain wavelength is propagated in sapphire pipe with after optical fiber collimator with approaching parallel light state by optical fiber, is arrived
It will be reflected at former and later two interfaces after up to sapphire sheet, reflected light is met in sapphire pipe to be interfered.
Using the light of a wavelength range, such as the common 1525nm -1565nm wavelength light of fiber optic communication, through optical fiber and light
Two interfaces occur to reflect and interfere to return to optical fiber collimator and original optical path before and after sapphire sheet after fine collimator.Use light
Spectrum analysis instrument or Optical Demodulation instrument carry out analysis to reflected light and the interference spectrum curve of light intensity relative wavelength can be obtained.It is dry based on this
Relating to the curve of spectrum can be calculated between the two-beam that two interface of sapphire sheet is reflected using white light interference demodulation techniques
Optical path difference.
The light path that light is propagated in sapphire sheet is related to environment temperature, can obtain environment by calculating above-mentioned optical path difference
Temperature value.
The Design of length of the sapphire pipe is 5 centimetres to 100 centimetres, and internal diameter is designed as 0.5 millimeter to 15 millimeters.
The diameter design of the sapphire sheet is 0.1 centimetre to 8 centimetres, the thickness design of sapphire sheet be 0.05 millimeter extremely
2 millimeters.
The optical fiber can be single mode, or multimode fibre.
In the utility model, the optical fiber collimator of optical fiber is connected for generating nearly directional light, light passes in sapphire pipe
It broadcasts, it is seldom in the light that tube wall is converted because the direction of propagation is approximately parallel to tube axial direction, guarantee that light is propagated in pipe.Lan Bao
The length of madreporic canal keeps apart the room temperature space of the high-temperature part for making probe work and ordinary optic fibre and collimator work.Collimation
Light reflects at former and later two interfaces of sapphire sheet, and two reflected lights are interfered because of light path difference.Temperature change passes through blue precious
The interference information of interface reflected light reflects before and after flag, due to sapphire high-temperature stability, uses such sensor
Temperature can accurately and stably be measured under room temperature to 2000 degree or so temperature environments.
Description according to the above technical scheme, the beneficial effects of the utility model are as follows:
The utility model structure is simple, signal stabilization, and test is sensitive accurate, and sensing head high temperature resistant, probe component does not use
The techniques such as bonding or plated film are avoided and are popped one's head in using various material with complex production black matrix, also without using light unstable under high temperature
Fine grating greatly improves the stability and reliability of sensor as probe element；It is visited using sapphire sheet as temperature
The interference of capitiform Cheng Guang obtains temperature information, interferes temperature sensing process by other extraneous factors, is capable of providing high temperature resistant,
High-precision temperature sensing function.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the utility model.
Fig. 2 is another structural schematic diagram of the utility model.
Wherein, appended drawing reference are as follows: 1. optical fiber；2. optical fiber collimator；3. sapphire pipe；4. sapphire sheet.
Specific embodiment
The utility model is described in further detail with embodiment with reference to the accompanying drawing.
Embodiment 1
As shown in Figure 1, a kind of superhigh temperature optical sensor based on sapphire pipe and sapphire sheet, including single mode or multimode
Optical fiber 1, optical fiber collimator 2, sapphire pipe 3 and sapphire sheet 4；Optical fiber 1 is set to the front end of optical fiber collimator 2, fiber optic collimator
The front end of the end insertion sapphire pipe 3 of device 2, optical fiber collimator 2 and optical propagation direction are parallel to the axial direction of sapphire pipe 3；Institute
State the end that sapphire sheet 4 is set to sapphire pipe 3 by welding mode, axial direction of the sapphire sheet 4 perpendicular to sapphire pipe 3.
10 centimetres to 100 centimetres of the length of the sapphire pipe 3,1 millimeter to 10 millimeters of internal diameter；The sapphire sheet 4
Diameter design is 0.5 centimetre to 5 centimetres, 0.05 millimeter to 1 millimeter of the thickness of sapphire sheet 4.
The utility model uses cheap sapphire pipe 3 and sapphire sheet 4, the high temperature ring that can be used within 2000 degree
Border.Sapphire pipe 3 and sapphire sheet 4 are welded together, and make sensor probe coupling part equally can under high temperature environment just
Often work.Using such a configuration obviates the black body radiation for using material with complex to make probe, thermometric is also more accurate and reliable.
When it is implemented, sensor probe is made using sapphire pipe 3 and sapphire sheet 4, it is suitble to work under high temperature.It is made
Sensor, the use process is as follows:
Sensor probe is protruded into hot environment first, the length of sapphire pipe 3 make to sense both ends be in hot environment with
Under two kinds of working environments of normal temperature environment.Will detection light by optical fiber 1 introduce optical fiber collimator 2, through optical fiber collimator 2 collimation after at
Sapphire sheet 4 is transmitted to through sapphire pipe 3 for nearly directional light.Incident light is reflected at 4 front and back of sapphire sheet, two interfaces, and two is anti-
It penetrates light reflection such as sapphire pipe 3 to interfere, the light through interfering continues to be transmitted to optical fiber collimator 2 and return through optical fiber 1.Passback
The light beam interfered has occurred can get forwarded to the equipment such as spectroanalysis instrument or optical fibre interrogation instrument via modes such as optical fiber circulators.Pass through
Instrument analyzes the optical path difference that can calculate the two-beam that 4 liang of interfaces of sapphire sheet are reflected, can be true according to optical path difference
Determine the temperature of 4 local environment of sapphire sheet.
Embodiment 2
As shown in Fig. 2, a kind of superhigh temperature optical sensor based on sapphire pipe and sapphire sheet, including single mode or multimode
Optical fiber 1, optical fiber collimator 2, sapphire pipe 3 and sapphire sheet 4；Optical fiber 1 is set to the front end of optical fiber collimator 2, fiber optic collimator
The front end of the end insertion sapphire pipe 3 of device 2, optical fiber collimator 2 and optical propagation direction are parallel to the axial direction of sapphire pipe 3；?
A slot position is processed close to 3 end of sapphire pipe, sapphire sheet 4 is caught in slot position, sapphire sheet 4 is perpendicular to sapphire pipe 3
Axial direction.
5 centimetres to 50 centimetres of the length of the sapphire pipe 3,0.5 millimeter to 15 millimeters of internal diameter；The sapphire sheet 4
Diameter design is 0.1 centimetre to 8 centimetres, 0.1 millimeter to 2 millimeters of the thickness of sapphire sheet 4.
Sensor probe is made by using sapphire pipe 3 and sapphire sheet 4, the structure one in also the same and embodiment 1
Sample is suitble to work under high temperature.
The present embodiment makes sensor probe production have more flexible mode, also has more selections for process equipment, together
When keep the feature resistant to high temperature of popping one's head in.
Claims (8)
1. a kind of superhigh temperature optical sensor based on sapphire pipe and sapphire sheet characterized by comprising optical fiber (1), light
Fine collimator (2), sapphire pipe (3) and sapphire sheet (4)；Optical fiber (1) is set to the front end of optical fiber collimator (2), and optical fiber is quasi-
The front end of end insertion sapphire pipe (3) of straight device (2), optical fiber collimator (2) and optical propagation direction are parallel to sapphire pipe (3)
Axial direction；Sapphire sheet (4) is set to the end of sapphire pipe (3), and the sapphire sheet (4) is perpendicular to sapphire pipe (3)
Axial direction.
2. the superhigh temperature optical sensor based on sapphire pipe and sapphire sheet according to claim 1, which is characterized in that institute
The internal diameter for stating the outer diameter and sapphire pipe (3) of optical fiber collimator (2) matches.
3. the superhigh temperature optical sensor based on sapphire pipe and sapphire sheet according to claim 1, which is characterized in that institute
State the end that sapphire sheet (4) is set to sapphire pipe (3) by welding mode.
4. the superhigh temperature optical sensor based on sapphire pipe and sapphire sheet according to claim 1, which is characterized in that
A slot position is processed close to sapphire pipe (3) end, sapphire sheet (4) is caught in slot position.
5. the superhigh temperature optical sensor based on sapphire pipe and sapphire sheet according to claim 1, which is characterized in that institute
Former and later two interfaces for stating sapphire sheet (4) can be reflected, to constitute an optical interdferometer.
6. the superhigh temperature optical sensor based on sapphire pipe and sapphire sheet according to claim 1, which is characterized in that institute
The Design of length for stating sapphire pipe (3) is 5 centimetres to 100 centimetres, and internal diameter is designed as 0.5 millimeter to 15 millimeters.
7. the superhigh temperature optical sensor according to claim 1 or 6 based on sapphire pipe and sapphire sheet, feature exist
In the diameter design of the sapphire sheet (4) is 0.1 centimetre to 8 centimetres, and the thickness design of sapphire sheet (4) is 0.05 millimeter
To 2 millimeters.
8. the superhigh temperature optical sensor according to claim 1 or 6 based on sapphire pipe and sapphire sheet, feature exist
In the optical fiber (1) is single mode or multimode fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821683345.1U CN209043483U (en) | 2018-10-17 | 2018-10-17 | A kind of superhigh temperature optical sensor based on sapphire pipe and sapphire sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821683345.1U CN209043483U (en) | 2018-10-17 | 2018-10-17 | A kind of superhigh temperature optical sensor based on sapphire pipe and sapphire sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209043483U true CN209043483U (en) | 2019-06-28 |
Family
ID=67036401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821683345.1U Active CN209043483U (en) | 2018-10-17 | 2018-10-17 | A kind of superhigh temperature optical sensor based on sapphire pipe and sapphire sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209043483U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114322814A (en) * | 2021-12-28 | 2022-04-12 | 中国人民解放军国防科技大学 | Anti-scouring high-temperature strain sensor for metal casting of sapphire fiber grating |
| CN114322814B (en) * | 2021-12-28 | 2024-06-07 | 中国人民解放军国防科技大学 | Anti-scouring high-temperature strain sensor cast by sapphire fiber grating metal |
-
2018
- 2018-10-17 CN CN201821683345.1U patent/CN209043483U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114322814A (en) * | 2021-12-28 | 2022-04-12 | 中国人民解放军国防科技大学 | Anti-scouring high-temperature strain sensor for metal casting of sapphire fiber grating |
| CN114322814B (en) * | 2021-12-28 | 2024-06-07 | 中国人民解放军国防科技大学 | Anti-scouring high-temperature strain sensor cast by sapphire fiber grating metal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206618529U (en) | A kind of simple reflective interference-type optical fiber baroceptor | |
| CN106289504B (en) | A kind of Fabry-perot optical fiber sonic probe device and preparation method thereof | |
| CN108844919B (en) | Cladding reflection type inclined fiber grating refractive index sensor and manufacturing and measuring methods thereof | |
| CN113008406B (en) | High-precision temperature sensor based on enhanced vernier effect | |
| WO2017129131A1 (en) | Light path-coupling device and fluorescence temperature-sensing optical system | |
| CN105758567A (en) | Fiber interference type pressure sensor based on 3*3 coupler | |
| CN112924082B (en) | High-sensitivity air pressure sensor based on suspension core optical fiber and side hole optical fiber | |
| CN108731841B (en) | Frequency modulation continuous wave laser interference optical fiber temperature sensor | |
| CN105953958A (en) | All-silica fiber Fabry-Perot pressure sensor | |
| CN112629744A (en) | Atmospheric pressure sensor based on cascade fiber Fabry-Perot interferometer | |
| CN109974789A (en) | A kind of high integration mini optical fibre seawater thermohaline depth sensor based on MEMS technology and membrane material | |
| CN110320181A (en) | A kind of optical fibre Michelson interferometric sensor and the method for sensing based on the sensor | |
| US4380394A (en) | Fiber optic interferometer | |
| CN101794506B (en) | Method and device used for data calibration in distributed type optical fiber temperature sensor | |
| CN208595984U (en) | A kind of high sensitivity optical fiber temperature sensor | |
| CN209043483U (en) | A kind of superhigh temperature optical sensor based on sapphire pipe and sapphire sheet | |
| US9395251B2 (en) | Temperature sensitive body, optical temperature sensor, temperature measurement device, and heat flux measurement | |
| CN110108383A (en) | Based on long F-P cavity optical fiber white light interference type high temperature and high sensitivity temperature sensor | |
| CN109580037A (en) | Temperature sensor and preparation method thereof based on photonic crystal fiber FP structure | |
| CN109507132A (en) | Spectrographic detection type gas sensor based on double optical fiber FP interferometer parallel-connection structures | |
| US11448558B2 (en) | Michelson interference optical fiber temperature sensor for detecting contrast change of fringes | |
| Otsuki et al. | A novel fiber-optic gas sensing arrangement based on an air gap design and an application to optical detection of humidity | |
| CN207263633U (en) | A kind of fibre optic interferometer gas sensor based on free-air chamber | |
| CN206146827U (en) | Plate palladium optic fibre hydrogen sensor | |
| CN103697920A (en) | Optical fiber sensing head and optical fiber sensing system and method for measuring liquid refractivity based on sensing head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |