CN107607217A - Temperature, pressure integrated sensing device and measuring method based on high double-refraction photon crystal fiber surface plasma resonance - Google Patents
Temperature, pressure integrated sensing device and measuring method based on high double-refraction photon crystal fiber surface plasma resonance Download PDFInfo
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Abstract
The present invention is to provide a kind of temperature, pressure integrated sensing device and measuring method based on high double-refraction photon crystal fiber surface plasma resonance.Sensor includes wide spectrum light source, the joints of optical fibre, general single mode fiber, high birefringence plated film photonic crystal fiber and spectrometer.The ambient temperature and pressure of high birefringence plated film photonic crystal fiber are judged by the surface plasma body resonant vibration wave spectrum detected in spectrometer；The timing of pressure one, when the ambient temperature increase of sensor, resonant wavelength reduces；When ambient temperature reduces, resonant wavelength increase.The timing of temperature one, when the outside application pressure increase of sensor, resonant wavelength increase；When outside applies pressure reduction, resonant wavelength reduces；Change light source light source of the wavelength near surface plasma body resonant vibration wavelength into, determined that the position of surface plasma body resonant vibration occurs with loss spectra analytic approach.It can be achieved disposable while extraneous temperature, pressure analyzed and detected.
Description
Technical field
The present invention relates to a kind of temperature, pressure integrated sensing device, the present invention also relates to be a kind of temperature, pressure
Measuring method.Particularly a kind of temperature, pressure integration based on high double-refraction photon crystal fiber surface plasma body resonant vibration passes
Induction device and its measuring method.
Background technology
Surface plasma body resonant vibration (Surface Plasmon Resonance, SPR) is very popular in recent years new
Optical sensing technology, because its have without mark, high sensitivity, electromagnetism interference, can real-time monitoring and other advantages, biology doctor
The various fields such as, environmental pollution, food security, petrochemical industry have a extensive future.In recent years, with fiber-drawing techniques
Constantly ripe, Fiber Optic Sensor Based on Surface Plasmon Resonance has and device extremely sensitive to extraneous medium refraction index minor variations concurrently
Miniaturization, especially the normal work in the case of high temperature, inflammable and explosive, high pressure, strong electromagnetic the characteristics of, it has also become international
Sensing technology and the forward position study hotspot of nano material crossing domain, cause the close attention of scientific research personnel.However, optical fiber passes
Big coupling loss, polarization-maintaining difference be present and easily cause cross sensitivity etc. to lack in sensor mainly using ordinary optic fibre as sensing element
Point, particularly fiber core guided mode are difficult with surface plasma mould phase matched, serious to hinder optical fiber surface plasmon body resonance to show
The generation of elephant, in order to solve this key problem, sight has been turned to biography optical medium-photonic crystal of new generation by researcher
Optical fiber (Photonic Crystal Fiber, PCF).Since first photonic crystal fiber being produced in the world from 1996,
It just receives extensive concern and as optics in recent years and the focus of photoelectronics research.Surface based on photonic crystal fiber
Plasmon Resonance, because its fiber core refractive index can carry out flexible design and regulation and control, easily realized with surface plasma mould
Phase matched and excite SPR phenomenons, paid close attention to by scientific research personnel.
2006, A.Hassani and M.Skorobogatiy et al. proposed based on microstructured optical fibers spr sensor first
Design principle, due to being full of air in fibre core and covering in the hole of periodic arrangement, having for fiber core guided mode can be significantly reduced
Refractive index is imitated, this feature can realize flexible design and the regulation and control of photonic crystal fiber SPR fiber core guided modes, be allowed to easily with surface etc.
Gas ions mould phase non-colinear position.Document (Applied Optics, 51 (26) (2012) 6361-6367) proposes and realizes one kind
Based on the temperature sensor of selected liq filling photonic crystal fiber, experiment confirms radial mixing photonic crystal light first
The presence that class band gap acts in fibre.Document (Journal of Physics:Conference Series, 276 (1) (2011)
The photonic crystal fiber pressure sensor for being coated with silverskin is described in 12102-12108), experiment has shown high birefringence photon crystalline substance
Body optical fiber has highly sensitive pressure-sensing capabilities.Patent CN105371981A proposes a kind of silver-plated liquid crystal of inwall and fills hollow light
Fine surface plasma body resonant vibration temperature sensor, the inside of hollow glass optical fiber is silver-plated, in silver-plated hollow glass inside of optical fibre
It filling liquid crystal, can realize that real-time dynamic monitoring slight temperature changes, be adapted to transmit over long distances.But above photonic crystal fiber
Spr sensor has only completed single SPR detection, and once a kind of property can only be detected, and this is being limited to a certain degree
Its application.
In the prior art, one kind is provided in Publication No. CN202267563U patent document to measure using electric principle
The sensor of temperature and pressure, not only simultaneously measurement temperature and pressure, and by stainless steel diaphragm realize to pressure sensitive core
The isolation of piece, expand the scope of application, but because heat transfer process is longer, thermal losses is larger, thus the medium temperature measured with
Actual temperature has a temperature difference, and measurement result is inaccurate.Technical side disclosed in Publication No. CN201795879U patent document
Although case precision is higher, the sealing that embedding ensures product must be carried out, dosing technology is complicated, causes low production efficiency
Under.Technical scheme disclosed in Publication No. CN105466483A patent document needs to set simultaneously in narrow space tightly
The Sensitive Apparatus of adjacent thermistor, pcb board and pressure chip, can not anti-electricity in real time although sensors with auxiliary electrode precision is high
Magnetic disturbance and on-line checking, limit its application.Compared with conventional electrical sensor, fibre optical sensor has much can not
The advantage of analogy, these include the rotten candle of electromagnetism interference, chemically-resistant, small volume, telemeasurement ability, Large Copacity multiplexing energy
Power, distributed quasi-distributed sensing capability etc..
The content of the invention
It is an object of the invention to provide a kind of small volume, simple in construction, measurement accuracy height, electromagnetism interference, Neng Goushi
The temperature, pressure based on high double-refraction photon crystal fiber surface plasma resonance now detected simultaneously to extraneous temperature and pressure
Integrated sensing device.The present invention also aims to provide one kind be based on high double-refraction photon crystal fiber surface etc. from
The measuring method of the temperature, pressure integrated sensing device of sub-resonance.
The temperature, pressure for the being based on high double-refraction photon crystal fiber surface plasma resonance integration of the present invention passes
Induction device includes wide spectrum light source 1, the joints of optical fibre 2, general single mode fiber 3, high birefringence plated film photonic crystal fiber 4, spectrum
Instrument 5 and computer 6, the wide spectrum light source are connected by one end of the joints of optical fibre and general single mode fiber, general single mode fiber
The other end be of coupled connections using one end of fiber coupler and high birefringence plated film photonic crystal fiber, high birefringence plated film light
The other end of photonic crystal fiber is connected through an other general single mode fiber into spectrometer with computer, the high birefringence plating
Deposited metal film 7 inside the fibre core of film photonic crystal fiber, thermosensitive liquid 8 is further filled with fibre core.
The dress of the temperature, pressure integrated sensing based on high double-refraction photon crystal fiber surface plasma resonance of the present invention
Putting to include：
1st, the metallic film is to use gold, silver, copper or the standby thickness of aluminum as 30~50nm film, formed surface etc. from
The sensing layer of daughter resonance.
2nd, the thermosensitive liquid is alcohol and chloroform volume ratio is 1：1 temperature-sensitive mixing liquid.
3rd, the two-port of high birefringence plated film photonic crystal fiber carries out termination process.
4th, the wide spectrum light source is the optical fiber laser with super continuous spectrum of wavelength consecutive variations in the range of 400~2400nm.
5th, the spectrometer is the spectrometer of Detection wavelength scope 400~2400nm light intensity, and detection sensitivity is less than 1nm.
The temperature, pressure for being based on high double-refraction photon crystal fiber surface plasma resonance one with the present invention
Change sensing device detection method be：High birefringence plated film photonic crystal fiber is placed on temperature and pressure control device simultaneously
On, with this spectrum of spectrometer collection, the wave spectrum measured in spectrometer only has an absworption peak, if ambient temperature and pressure
When changing, then multiple absworption peaks can be detected in spectrometer, in the case where having observed multiple absworption peaks, using pair
The light source near resonant wavelength answered is as incident light source, then is measured with loss spectra analytic approach and surface plasma body resonant vibration occurs
Position；Surveyed ambient temperature and pressure are obtained by resonant wavelength by calibration curve.
The Detection wavelength scope for adjusting spectrometer is 400~2400nm, when extraneous no pressure acts on, is filled by temperature control
Put, the temperature of mixing thermosensitive liquid Injection Section in control high birefringence plated film photonic crystal fiber, by formula neff=Re (neff)+
jIm(neff) andThe relation of effective refractive index and transmission loss is obtained, utilizes spectrum
Instrument measurement obtains high birefringence plated film photonic crystal fiber transmission loss spectrum under different temperatures and is used as temperature reference spectrum, wherein Re
(neff) represent effective refractive index real part, Im (neff) imaginary part of effective refractive index is represented, λ is wavelength, α and Im (neff) into just
Than relation, i.e. α=8.686 × k0·Im(neff)；
Formula n=nliquid+(dn/dT)(T-T0) try to achieve filling thermosensitive liquid refractive index variation with temperature；
When ambient temperature is constant, by pressure control device, mixed in control high birefringence plated film photonic crystal fiber
The pressure of thermosensitive liquid Injection Section, high birefringence plated film photonic crystal fiber transmission damage under different pressures is obtained with spectrometer measurement
Consumption spectrum is used as pressure reference spectrum, and loss peak intensity gradually increases with the increase of temperature, that is, the surface plasma excited is total to
Intensity of shaking gradually strengthens, and the change of loss spectra is due to elasto-optical effect, and in the presence of stress, the geometry of optical fiber changes
So as to cause the change of optical fibre refractivity, and the change of refractive index causes the change of optical signal resonance wavelength, thus obtains pressing
The drift value of power effect low-resonance wavelength is the change for detecting the pressure that outer fiber applies.
The invention provides a kind of small volume, simple in construction, and measurement accuracy is high, electromagnetism interference, can realize to the external world
The high double-refraction photon crystal fiber surface plasma resonance sensing equipment that temperature and pressure detects simultaneously.The present invention also resides in
Provide a kind of temperature, pressure integrated sensing device based on high double-refraction photon crystal fiber surface plasma body resonant vibration
Measuring method.
The temperature, pressure integrated sensing based on high double-refraction photon crystal fiber surface plasma body resonant vibration of the present invention
Device includes wide spectrum light source 1, the joints of optical fibre 2, general single mode fiber 3, high birefringence plated film photonic crystal fiber 4, spectrometer 5
And computer 6, the wide spectrum light source, then will be general using fiber coupler by the joints of optical fibre and a general single mode fiber
Logical single-mode fiber is of coupled connections with high birefringence plated film photonic crystal fiber, most enters light through an other general single mode fiber afterwards
Spectrometer, it is connected with computer.
The metallic film of plated with sensitive, is sunk using magnetron sputtering method in the high birefringence plated film photonic crystal fiber fibre core
Product metal film, metal film use gold, silver, copper or aluminium to prepare the thickness of film as 30~50nm, form surface plasma body resonant vibration
Sensing layer.
Filling thermosensitive liquid in the high birefringence plated film photonic crystal fiber fibre core, in order to obtain high heat-sensitive coefficients and folding
The liquid that rate is less than quartz is penetrated, it is 1 that the present invention, which have chosen alcohol and chloroform volume ratio,：1 temperature-sensitive mixing liquid, and utilize injection
Device auxiliary filling mode, the depth that liquid penetrates into are big.
The high birefringence plated film photonic crystal fiber both ends are of coupled connections with general single mode fiber, and to two-port
Carry out termination process.
The invention has the advantages that：The plating of photonic crystal fiber fibre core inwall is realized using magnetron sputtering method sedimentation
Metallic film technology, by regulating and controlling the change of ambient temperature and pressure, realize metal film and temperature-sensitive mixing liquid for extraneous temperature
The response of degree and pressure, so as to realize the quick response of surface plasma body resonant vibration signal, improve the sensitivity of measurement and steady
It is qualitative.In addition, it is 1 that the present invention, which have chosen alcohol and chloroform volume ratio,：1 temperature-sensitive mixing liquid, and filled out using syringe auxiliary
Mode is filled, the depth that liquid penetrates into is big, meets measurement request.Can be achieved it is disposable extraneous temperature, pressure is carried out simultaneously analysis and
Detection, so as to overcome traditional sensing techniques complex operation, detection sensitivity it is low, can not real-time online detection etc. technology not
Foot.
Brief description of the drawings
Fig. 1 is the integration of the temperature, pressure based on high double-refraction photon crystal fiber surface plasma body resonant vibration of the present invention
The structural representation of sensing device.
Fig. 2 is the high birefringence plated film photonic crystals optical fiber structure schematic diagram of the present invention.
Fig. 3 is the optical field distribution figure in the high birefringence plated film photonic crystal fiber x-polarisation direction of the present invention.
Fig. 4 is the optical field distribution figure in the high birefringence plated film photonic crystal fiber y-polarisation direction of the present invention.
Fig. 5 is the curve map that the high birefringence plated film photonic crystal fiber transmission loss of the present invention varies with temperature.
Fig. 6 is the pressure-dependent curve map of high birefringence plated film photonic crystal fiber transmission loss of the present invention.
Embodiment
Technical scheme is further described in detail with reference to the accompanying drawings and examples.
Using magnetron sputtering method deposited metal inside the photonic crystal fiber fibre core after inwall sensitized treatment in the present invention
Film, metal film use gold, silver, copper or aluminium to prepare the thickness of film as 30~50nm, form the sensing of surface plasma body resonant vibration
Layer, and thermosensitive liquid is filled in its fibre core ellipse airport, strengthen the temperature-sensing property of sensing device.Small volume of the present invention, knot
Structure is simple, and measurement accuracy is high, electromagnetism interference, can realize to extraneous temperature and pressure while detect, and it is cured in biology
The various fields such as, environmental pollution, food security, petrochemical industry have a extensive future.
With reference to shown in Fig. 1, the temperature pressure of the invention based on high double-refraction photon crystal fiber surface plasma body resonant vibration
Power integrated sensing device, including wide spectrum light source 1, the joints of optical fibre 2, general single mode fiber 3, high birefringence plated film photonic crystal
Then optical fiber 4, spectrometer 5 and computer 6, the wide spectrum light source are utilized by the joints of optical fibre and a general single mode fiber
General single mode fiber and high birefringence plated film photonic crystal fiber are of coupled connections by fiber coupler, most common through other one afterwards
Single-mode fiber enters spectrometer, is connected with computer.In addition, the inside of high birefringence plated film photonic crystal fiber 4 of the present invention is plated
There is the metallic film 7 of sensitivity and thermosensitive liquid 8 is filled with fibre core, make it more sensitive to extraneous temperature, pressure.
With reference to Fig. 2, its cross section of high birefringence plated film photonic crystal fiber 4 is circle, including substrate 9, covering are oval empty
Stomata 10 and fibre core, fiber core are covering ellipse airport, and described fibre core includes the heat of metallic film 11 and filling
Quick liquid 12.
With reference to Fig. 3, the optical field distribution figure in high birefringence plated film photonic crystal fiber x-polarisation direction of the invention, electric field side
To parallel and x-axis, its main energetic is limited in fibre core, and portion of energy is coupled to golden film surface.
With reference to Fig. 4, the optical field distribution figure in high birefringence plated film photonic crystal fiber y-polarisation direction of the invention, electric field side
To parallel and y-axis, its main energetic is limited in fibre core, and portion of energy is coupled to golden film surface.
With reference to shown in Fig. 5, curve that high birefringence plated film photonic crystal fiber transmission loss of the invention varies with temperature
Figure, loss peak intensity gradually reduce with the increase of temperature, that is, the surface plasma body resonant vibration intensity excited gradually weakens.This is
Because the absorption loss of metal reduces in shortwave direction, while optical fiber basic mode is smaller in shortwave direction spot size, is penetrated into bag
Light Energy is lower in layer, so as the loss at the increase formant of temperature declines, the strength of resonance gradually weakens.
With reference to shown in Fig. 6, the pressure-dependent curve of high birefringence plated film photonic crystal fiber transmission loss of the invention
Figure, loss peak intensity gradually increase with the increase of pressure, that is, the surface plasma body resonant vibration intensity excited gradually strengthens.This is
Because optical fiber basic mode is bigger in long wave direction spot size in the presence of external force, it is higher to be penetrated into Light Energy in covering, institute
Risen with the loss at the increase formant with pressure, the strength of resonance gradually strengthens.
In order to be better understood from a kind of based on high double-refraction photon crystal fiber surface plasma body resonant vibration of the present invention
How temperature, pressure integrated sensing device is realized, detailed mathematical description is given below.
Loss spectra analytic approach of the present invention is exactly that its sensing characteristics is divided using the loss spectra of sensing model
The method of analysis.Simulation analysis are carried out to designed sensor using software for calculation, try to achieve effective refraction of mould field plural form
Rate, it can specifically be expressed as：
neff=Re (neff)+jIm(neff) (1)
The wherein real part Re (n of effective refractive indexeff) refractive index of expression in general sense, the imaginary part Im of effective refractive index
(neff) related to the transmission loss of the pattern.Therefore, transmission loss is represented by：
λ is wavelength, from formula, α and Im (neff) proportional, i.e. α=8.686 × k0·Im(neff).Thus
Formula can obtain the loss spectra of sensing model.
Fig. 2 gives the structural representation of high birefringence plated film photonic crystal fiber 4 of the present invention, and wherein substrate 9, covering is ellipse
Circle airport 10, metallic film 11 and filling thermosensitive liquid 12, when variation of ambient temperature, substrate, metallic film and
The refractive index of the thermosensitive liquid of filling can all change accordingly, and therefore, exciting SPR condition can also change, and pass through measurement
The change of depletion sensor spectrum, the change with regard to sense ambient temperature can be detected.
Wherein, a kind of high thermo-optical coeffecient (dn/dT) is filled in the fibre core of high birefringence plated film photonic crystal fiber 4 of the invention
Thermosensitive liquid, the sensitivity of TEMP can be strengthened, the expression formula of its sensor information refractive index is：
N=nliquid+(dn/dT)(T-T0) (3)
Temperature pressure sensing sensitivity is an important indicator of detection sensor performance.We utilize the change of temperature, pressure
The displacement of spectrum peak can be measured by changing, and the expression formula of its TEMP sensitivity S is：
In formula, Δ λpeakFor the variable quantity of formant, Δ T is the variable quantity of temperature, and Δ F is the variable quantity of pressure.
In the present invention the pressure sensing operation principle of high birefringence plated film photonic crystal fiber be using optical signal as carrier,
Optical fiber is as transmission medium, and when the pressure of optical fiber or optical fibre device by the external world, the strain of its internal stress changes, so as to
The parameters such as the intensity of light, phase, wavelength, polarization state are caused to change, so as to realize pressure-sensing.Due to elasto-optical effect,
In the presence of stress, the geometry of optical fiber is changed so as to cause the change of optical fibre refractivity, and the change of refractive index is drawn
The change of optical signal resonance wavelength is played, therefore we can obtain the drift value of resonant wavelength under pressure, can just detect
Go out the change of the pressure of outer fiber application.In addition, high birefringence plated film photonic crystal fiber is filled in fibre core in the present invention
Liquid, by forming solid-liquid two-component optical fiber, pressure enhanced sensitivity is realized using solid and difference of the liquid on mechanical characteristic.
Filled using this temperature, pressure integrated sensing based on high double-refraction photon crystal fiber surface plasma body resonant vibration
Put the measurement to extraneous temperature, pressure.Specific measuring process is as follows：
1st, the optical fiber laser with super continuous spectrum of consecutive variations in 400~2400nm is covered using spectral region, utilizes optical fiber
Optical fiber laser with super continuous spectrum is connected by connector with general single mode fiber, is coupled light into general single mode fiber.
2nd, in order to avoid mixing influence of the thermosensitive liquid to welding in high birefringence plated film photonic crystal fiber 4, control mixes
Close thermosensitive liquid and be injected into the interlude of high birefringence plated film photonic crystal fiber 4, it is not molten in the airport at optical fiber both ends
Liquid.Using optical fiber splicer, by the 3 perfect welding of general single mode fiber at high birefringence plated film photonic crystal fiber 4 and both ends.Together
When optical fiber between welding to be formed between injection mixing thermosensitive liquid in fusion point and high birefringence plated film photonic crystal fiber
The space of one closing, the flowing of injection mixing thermosensitive liquid in high birefringence plated film photonic crystal fiber can be prevented.
3rd, single-mode fiber is connected to spectrometer, and the Detection wavelength scope for adjusting spectrometer is 400~2400nm.When outer
During boundary's no pressure effect, by temperature control device, thermosensitive liquid Injection Section is mixed in control high birefringence plated film photonic crystal fiber
Temperature, the relation of effective refractive index and transmission loss is understood by formula (1) and (2), difference is obtained using spectrometer is measurable
At a temperature of high birefringence plated film photonic crystal fiber transmission loss spectrum be used as temperature reference spectrum, as shown in figure 5, be lost peak intensity
Gradually reduced with the increase of temperature, that is, the surface plasma body resonant vibration intensity excited gradually weakens, and the change of loss spectra is main
As caused by the change of the refractive index of substrate, metallic film and the thermosensitive liquid of filling, wherein the thermosensitive liquid filled
Refractive index variation with temperature can be obtained by formula (3).
4th, when ambient temperature is constant, by pressure control device, control in high birefringence plated film photonic crystal fiber and mix
The pressure of thermosensitive liquid Injection Section is closed, obtaining high birefringence plated film photonic crystal fiber under different pressures with spectrometer measurement transmits
Loss spectra is as pressure reference spectrum, as shown in fig. 6, loss peak intensity gradually increases with the increase of temperature, that is, the table excited
Surface plasma resonance intensity gradually strengthens, and the change of loss spectra is mainly due to elasto-optical effect, in the presence of stress, optical fiber
Geometry changes so as to cause the change of optical fibre refractivity, and the change of refractive index causes changing for optical signal resonance wavelength
Become, therefore we can obtain the drift value of resonant wavelength under pressure, the pressure applied with regard to that can detect outer fiber
Change.
5th, the high birefringence plated film photonic crystal fiber in sensing device Fig. 1 is placed and is placed on temperature and pressure control simultaneously
On device processed, with this spectrum of spectrometer collection, the wave spectrum measured in spectrometer only has an absworption peak, but if extraneous
When temperature and pressure changes, then multiple absworption peaks can be detected in spectrometer, observe the feelings of multiple absworption peaks
Under condition, using the light source near corresponding resonant wavelength as incident light source, then with loss spectra analytic approach generation table can be measured
The position of surface plasma resonance.
6th, the calibration curve of the sensing device is passed through, it is possible to which surveyed ambient temperature and pressure are obtained by resonant wavelength.
7th, by analyzing spectrum analysis figure and combining formula (4), you can draw the sensitivity of the sensing device.
Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and is not to the present invention
The restriction of embodiment.There is no necessity and possibility to exhaust all the enbodiments.And these belong to the spirit of the present invention
Among the obvious changes or variations extended out is still in protection scope of the present invention.
Claims (8)
1. a kind of temperature, pressure integrated sensing device for being based on high double-refraction photon crystal fiber surface plasma resonance,
Including wide spectrum light source (1), the joints of optical fibre (2), general single mode fiber (3), high birefringence plated film photonic crystal fiber (4), light
Spectrometer (5) and computer (6), the wide spectrum light source are connected by one end of the joints of optical fibre and general single mode fiber, common single
The other end of mode fiber is of coupled connections using one end of fiber coupler and high birefringence plated film photonic crystal fiber, high birefringence
The other end of plated film photonic crystal fiber is connected through an other general single mode fiber into spectrometer with computer, its feature
It is：Deposited metal film (7) inside the fibre core of the high birefringence plated film photonic crystal fiber, thermosensitive liquid is further filled with fibre core
(8)。
2. the temperature, pressure one according to claim 1 based on high double-refraction photon crystal fiber surface plasma resonance
Change sensing device, it is characterized in that：The metallic film is to use gold, silver, copper or the standby thickness of aluminum as 30~50nm film, shape
Into the sensing layer of surface plasma body resonant vibration.
3. the temperature, pressure one according to claim 1 based on high double-refraction photon crystal fiber surface plasma resonance
Change sensing device, it is characterized in that：The thermosensitive liquid is alcohol and chloroform volume ratio is 1：1 temperature-sensitive mixing liquid.
4. the temperature, pressure one according to claim 1 based on high double-refraction photon crystal fiber surface plasma resonance
Change sensing device, it is characterized in that：The two-port of high birefringence plated film photonic crystal fiber carries out termination process.
5. the temperature, pressure one according to claim 1 based on high double-refraction photon crystal fiber surface plasma resonance
Change sensing device, it is characterized in that：The wide spectrum light source is the super continuous spectrums light of wavelength consecutive variations in the range of 400~2400nm
Fibre laser.
6. the temperature, pressure one according to claim 1 based on high double-refraction photon crystal fiber surface plasma resonance
Change sensing device, it is characterized in that：The spectrometer is the spectrometer of Detection wavelength scope 400~2400nm light intensity, and detection is sensitive
Degree is less than 1nm.
A kind of 7. temperature, pressure based on high double-refraction photon crystal fiber surface plasma resonance based on described in claim 1
The detection method of integrated sensing device, it is characterized in that：High birefringence plated film photonic crystal fiber is placed on temperature and pressure simultaneously
On force control device, with this spectrum of spectrometer collection, the wave spectrum measured in spectrometer only has an absworption peak, if extraneous
When temperature and pressure changes, then multiple absworption peaks can be detected in spectrometer, observe the feelings of multiple absworption peaks
Under condition, using the light source near corresponding resonant wavelength as incident light source, then measured with loss spectra analytic approach and surface etc. occurs
The position of ion resonance body；Surveyed ambient temperature and pressure are obtained by resonant wavelength by calibration curve.
8. detection method according to claim 7, it is characterized in that specifically including：Adjustment spectrometer Detection wavelength scope be
400~2400nm, when extraneous no pressure acts on, by temperature control device, mixed in control high birefringence plated film photonic crystal fiber
The temperature of thermosensitive liquid Injection Section, by formula neff=Re (neff)+jIm(neff) and
The relation of effective refractive index and transmission loss is obtained, it is brilliant to obtain high birefringence plated film photon under different temperatures using spectrometer measurement
Body fiber transmission attenuation spectrum is used as temperature reference spectrum, wherein Re (neff) represent effective refractive index real part, Im (neff) represent
The imaginary part of effective refractive index, λ are wavelength, α and Im (neff) proportional, i.e. α=8.686 × k0·Im(neff)；
Formula n=nliquid+(dn/dT)(T-T0) try to achieve filling thermosensitive liquid refractive index variation with temperature；
When ambient temperature is constant, by pressure control device, temperature-sensitive is mixed in control high birefringence plated film photonic crystal fiber
The pressure of liquid Injection Section, obtain high birefringence plated film photonic crystal fiber transmission loss under different pressures with spectrometer measurement and compose
As pressure reference spectrum, loss peak intensity gradually increases with the increase of temperature, that is, the surface plasma body resonant vibration excited is strong
Degree gradually enhancing, the change of loss spectra is due to elasto-optical effect, in the presence of stress, the geometry of optical fiber change so as to
Cause the change of optical fibre refractivity, and the change of refractive index causes the change of optical signal resonance wavelength, thus obtains making in pressure
It is the change for the pressure for detecting outer fiber application with the drift value of low-resonance wavelength.
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