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CN106197741A - Temperature-detecting device based on micro-nano long-period fiber grating sensor and method - Google Patents

Temperature-detecting device based on micro-nano long-period fiber grating sensor and method Download PDF

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Publication number
CN106197741A
CN106197741A CN201610551819.6A CN201610551819A CN106197741A CN 106197741 A CN106197741 A CN 106197741A CN 201610551819 A CN201610551819 A CN 201610551819A CN 106197741 A CN106197741 A CN 106197741A
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temperature
optical fiber
micro
signal
grating sensor
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CN106197741B (en
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周六英
吴帆
周锋
孔维宾
王如刚
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Dongtai Chengdong Science And Technology Pioneer Park Management Co ltd
Dongtai Tepusong Machinery Equipment Co ltd
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Yangcheng Institute of Technology
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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
    • G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

The invention discloses a kind of temperature-detecting device based on micro-nano long-period fiber grating sensor and method, wideband light source sends laser signal and enters micro-nano long-period fiber grating sensor, the modulated signal of shift frequency is exported after acousto-optic modulator is modulated, modulated signal is divided into two bundle flashlights through the first bonder, enter after the second bonder merges respectively through the first optical fiber and the second optical fiber and export laser signal to be analyzed, laser signal to be analyzed is converted to the signal of telecommunication through photodetector, the signal of telecommunication measures the strength information of its signal through signal processing unit, quantitative relationship with reference to the strength information demarcated in advance and temperature obtains temperature information to be measured.Present invention utilizes the centre wavelength high sensitivity for temperature of micro-nano long-period fiber grating sensor, during variations in temperature, the wavelength change of micro-nano long-period fiber grating sensor, phase contrast between first optical fiber and the second optical fiber changes, the Strength Changes of the detecting system output signal caused by measurement obtains temperature information to be measured, can accurately detect temperature information, there is advantage with low cost and simple in construction.

Description

Temperature-detecting device based on micro-nano long-period fiber grating sensor and method
Technical field
The present invention relates to a kind of Fibre Optical Sensor, be specifically related to a kind of temperature based on micro-nano long-period fiber grating sensor Degree detection device and method.
Background technology
Long-period fiber grating sensor refers to introduce the cyclically-varying of refractive index in the fibre core of optical fiber, and the cycle is with red External wave is at the same order of magnitude, the most hundreds of micron.Long-period fiber grating sensor is by the optical coupling of frequency range a certain in guided wave Losing in covering, its transmission characteristic can change because of the impact of the extraneous factor such as stress, temperature, passes through resonance wave Long tuning obtains heat transfer agent, has electromagnetism interference, anticorrosive, electric insulation, high sensitivity and low cost and and general The advantages such as the good compatibility of logical optical fiber, are suitable for precision, accurately measure.Compared with common Bragg grating, long period The reacting condition of fiber grating pair environment is sensitiveer, and has the advantages such as low reflection, measuring method are simple, be a kind of preferably Sensing element.Therefore, highly sensitive fiber-optic grating sensor is an important directions of modern sensor development, long period light Fine grating is used for sensing, and prior art is reported.2012, the research worker such as Bai Yu proposed cascade-connection long period photonic crystal light The patent of invention of fine grating temperature sensor, application number 201210525114.9, this invention uses cascade-connection long period photon Crystal optical fibre grating, fills heat-sensitive materials in covering airport, and screen periods can be determined by wave band selected by reality.By controlling The temperature of heat-sensitive materials, changes the effective refractive index of grating CGCM, thus changes the centre wavelength of grating transmission spectrum, make temperature The change of degree is presented as the skew of transmission spectral line, it is achieved the thermometer sensor DS18B20 of tunable wave length.In the same year, Qiao Xue light etc. studies people Member proposes the patent of invention of dual period fiber grating Temperature Humidity Sensor, and application number 201210088050.0, this patent of invention is When the temperature and humidity of external environment changes, LPFG fibre core basic mode and the effective refractive index of cladding mode and Screen periods changes, and resonance wavelength changes, and refractive index changes, by detection temperature sensitive type LPFG With the transmission peak wavelength of sense wet type LPFG, the temperature of available environment and humidity information, it is achieved Radix Triplostegiae Grandiflorae amount is surveyed simultaneously Amount；2013, the research worker such as Yang Yu is strong proposed sending out of temperature sensor based on long-period gratings demodulation ordinary optic fibre grating Bright patent, application number 201310316860.1, this invention effectively eliminates light source power and rises and falls to fiber-optic grating sensor demodulation The impact of precision.2015, the research worker such as M.Najaria propose temperature based on micro-nano long-period fiber grating sensor and Stress sensing system (Najari M, Javan A M, Amiri N.Hybrid all-fiber sensor for simultaneous strain and temperature measurements based on Mach–Zehnder interferometer[J].Optik-International Journal for Light and Electron Optics, 2015,126(19):2022-2025.)；2016, the research worker such as Jia Shi proposed LPFG level UNPROFOR polarisation Fine temperature and refractive index detecting system (Shi J, Su G, Xu D, et al.A Dual-Parameter Sensor Using a Long-Period Grating Concatenated With Polarization Maintaining Fiber in Sagnac Loop[J].IEEE Sensors Journal,2016,16(11):4326-4330.)。
Owing to the long-period fiber grating sensor resonant bandwidth of general single mode fiber is relatively big, centre wavelength is caused to be difficult to standard Really measuring, the precision causing temperature detection is the highest；Further, since its transmission spectrum bandwidth ratio is relatively big, if spectrogrph in measurement Resolution ratio is relatively low, will introduce bigger wavelength readings error, limits the long-period gratings sensing of general single mode fiber The Measurement Resolution of device.Just because of these reasons so that directly measure the LPFG sensing of general single mode fiber It is to be grossly inaccurate that the transmission peaks of device obtains the information of temperature, just seems that certainty of measurement is inadequate really practicing aspect The shortcoming etc. bigger with having error.
Summary of the invention
Goal of the invention: present invention aims to the deficiencies in the prior art, it is provided that a kind of based on micro-nano long period light The temperature-detecting device of fiber grating sensor and method, improve temperature detecting precision.
Technical scheme: the invention provides a kind of temperature-detecting device based on micro-nano long-period fiber grating sensor, Including the wideband light source being sequentially connected with, micro-nano long-period fiber grating sensor, acousto-optic modulator, the first bonder, optical fiber, Two bonders, photodetector and signal processing unit, described optical fiber includes the first optical fiber and the second optical fiber, and the first bonder divides It is not connected to the second bonder by the first optical fiber and the second optical fiber.
In order to increase the scope of temperature to be detected, described wideband light source is that the spontaneous radiation of 1525nm～1565nm wave band is put Big wideband light source.
Further, described first optical fiber and the second optical fiber are in single-mode fiber, dispersion shifted optical fiber and highly nonlinear optical fiber One or both.
Further, described photodetector is balanced detector, and response wave length is consistent with wideband light source wave band, in order to improve Certainty of measurement.
A kind of temperature checking method based on micro-nano long-period fiber grating sensor, wideband light source sends laser signal and enters Enter micro-nano long-period fiber grating sensor, enter acousto-optic from the laser signal of micro-nano long-period fiber grating sensor output and adjust Device processed, exports the modulated signal of shift frequency after acousto-optic modulator is modulated, and modulated signal is divided into two bundle flashlights through the first bonder, Enter respectively through the first optical fiber and the second optical fiber and export laser signal to be analyzed after the second bonder merges, to be analyzed Laser signal be converted to the signal of telecommunication through photodetector, the signal of telecommunication measures the strength information of its signal through signal processing unit, Quantitative relationship with reference to the strength information demarcated in advance and temperature obtains temperature information to be measured.
Further, the change of temperature causes the change of micro-nano long-period fiber grating sensor transmission peak wavelength, the first optical fiber And second the phase contrast between optical fiber change, cause the change of the luminous power entering photodetector so that photodetection The intensity of the device output signal of telecommunication changes, and treats testing temperature by measuring the change acquisition of its electrical signal intensity.
Beneficial effect: present invention utilizes the centre wavelength Gao Ling for temperature of micro-nano long-period fiber grating sensor Sensitivity, during variations in temperature, the wavelength change of micro-nano long-period fiber grating sensor, the phase between the first optical fiber and the second optical fiber Potential difference changes, and the Strength Changes of the detecting system output signal caused by measurement obtains temperature information to be measured, it is possible to Accurately detect temperature information, there is advantage with low cost and simple in construction.
Accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention；
Fig. 2 is the transmitted spectrum of micro-nano long-period fiber grating sensor in embodiment；
Fig. 3 is the spectrum diagram of variations in temperature in embodiment；
Fig. 4 is the signal intensity relation schematic diagram in embodiment in the case of different temperatures.
Detailed description of the invention
Below technical solution of the present invention is described in detail, but protection scope of the present invention is not limited to described enforcement Example.
Embodiment:
Embodiment 1: a kind of temperature-detecting device based on micro-nano long-period fiber grating sensor, as it is shown in figure 1, include Wideband light source 100, micro-nano long-period fiber grating sensor 101, acousto-optic modulator the 102, first bonder the 103, first optical fiber 104, second optical fiber the 105, second bonder 106, photodetector 107 and signal processing unit 108.Wideband light source 100, micro-nano Long-period fiber grating sensor 101, acousto-optic modulator 102 and the first bonder 103 are sequentially connected, the first bonder 103 warp First optical fiber 105 two light paths of the 104, second optical fiber are respectively connecting to the second bonder 106, are then sequentially connected with photodetector 107 and signal processing unit 108.The present embodiment middle width strip light source 100 is Amonics ALS-18 light source, and output is 18dBm, wave-length coverage is 1528～1564nm, and its laser sent enters into micro-nano long-period fiber grating sensor 101 One port, micro-nano long-period fiber grating sensor 101 is to utilize CO2Pulse laser is carved on general single mode micro-nano fiber Making the micro-nano long period micro-nano fiber grating sensor that 20 cycle pitch is 100 μm, this general single mode micro-nano fiber is to utilize General single mode is drawn into the micro-nano fiber of a diameter of 6.2 μm, its transmitted spectrum as shown in fig. 2, it can be seen that wherein cardiac wave a length of 1537.5nm.Broad band laser enters into acousto-optic modulation through another port output of micro-nano long-period fiber grating sensor 101 The input port of device 102Gooch&Housego Fiber-Q, the laser signal modulated by acousto-optic modulator 102 is from acousto-optic modulation The output port output of device 102, the modulated signal of output shift frequency separates two bundle flashlights through first bonder 103 of 3dB, a branch of Flashlight, through the first optical fiber 104 general single mode fiber, enters the input of second bonder 106 of 3dB, separately after a length of 2km A branch of flashlight, through the second optical fiber 105 general single mode fiber, enters the input of the second bonder 106 after a length of 2.1km, this Two bundle flashlights enter photodetector from its outfan output signal light, this flashlight after mixing on the second bonder 106 The input of 107, photodetector 107 is the Finisar XPDV21x0RA of 50GHz, and response wave length is 1528～1564nm, Signal of telecommunication entering signal processing unit 108 after being changed by photodetector 107, after signal processing unit 108 processes, it is thus achieved that Temperature information on micro-nano long-period fiber grating sensor 101.
The principle of said temperature detection method is that the change of temperature causes micro-nano long-period fiber grating sensor 101 transmission The change of wavelength, the phase contrast between the first optical fiber 104 and the second optical fiber 105 changes, thus causes entrance photodetection The change of the luminous power of device 107 so that photodetector 107 exports the intensity of the signal of telecommunication and changes, due to this strength information With temperature, there is quantitative relationship, can demarcate in advance, to be measured by measuring the change acquisition of electrical signal intensity during temperature detection Temperature.
The frequency spectrum of concrete output temperature change is fig. 3, it is shown that the mid frequency of signal is 199.92MHz, warm Degree be signal intensity when 35 DEG C higher than 30 DEG C time intensity, the relation between temperature and signal intensity as shown in Figure 4, from Fig. 4 It can be seen that along with the increase of temperature, the intensity of signal linearly increases, and its slope is 0.46a.u/ DEG C, therefore, according to these rule After rule is demarcated, micro-nano LPFG can be obtained by the intensity measuring photodetector 107 output signal and pass The temperature information that sensor 101 senses.
Embodiment 2: roughly the same with embodiment 1 temperature-detecting device and method, except that the first optical fiber 104 is The highly nonlinear optical fiber of 1.8km, the second optical fiber 105 is the dispersion shifted optical fiber of 1.2km.

Claims (6)

1. a temperature-detecting device based on micro-nano long-period fiber grating sensor, it is characterised in that: include being sequentially connected with Wideband light source (100), micro-nano long-period fiber grating sensor (101), acousto-optic modulator (102), the first bonder (103), optical fiber, the second bonder (106), photodetector (107) and signal processing unit (108), described optical fiber includes One optical fiber (104) and the second optical fiber (105), the first bonder (103) is respectively by the first optical fiber (104) and the second optical fiber (105) the second bonder (106) it is connected to.
Temperature-detecting device based on micro-nano long-period fiber grating sensor the most according to claim 1, its feature exists In: described wideband light source (100) is the wideband light source of the spontaneous radiation amplification of 1525nm ~ 1565nm wave band.
Temperature-detecting device based on micro-nano long-period fiber grating sensor the most according to claim 1, its feature exists In: described first optical fiber (104) and the second optical fiber (105) they are in single-mode fiber, dispersion shifted optical fiber and highly nonlinear optical fiber One or both.
Temperature-detecting device based on micro-nano long-period fiber grating sensor the most according to claim 1, its feature exists In: described photodetector (107) is balanced detector, and response wave length is consistent with wideband light source (100) wave band.
5. a temperature checking method based on micro-nano long-period fiber grating sensor, it is characterised in that: wideband light source (100) Send laser signal and enter micro-nano long-period fiber grating sensor (101), from micro-nano long-period fiber grating sensor (101) The laser signal of output enters acousto-optic modulator (102), exports the modulated signal of shift frequency after acousto-optic modulator (102) is modulated, Modulated signal is divided into two bundle flashlights through the first bonder (103), respectively through the first optical fiber (104) and the second optical fiber (105) Entering after the second bonder (106) merges and export laser signal to be analyzed, laser signal to be analyzed is through photodetection Device (107) is converted to the signal of telecommunication, and the signal of telecommunication measures the strength information of its signal through signal processing unit (108), with reference to mark in advance The quantitative relationship of fixed strength information and temperature obtains temperature information to be measured.
Temperature checking method based on micro-nano long-period fiber grating sensor the most according to claim 5, its feature exists Cause the change of micro-nano long-period fiber grating sensor (101) transmission peak wavelength in: the change of temperature, the first optical fiber (104) and Phase contrast between second optical fiber (105) changes, and causes the change of the luminous power entering photodetector (107) so that The intensity of photodetector (107) the output signal of telecommunication changes, and treats testing temperature by measuring the change acquisition of its electrical signal intensity.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108414112A (en) * 2018-02-08 2018-08-17 盐城工学院 A kind of Discrete Production Workshop device temperature monitoring device and method based on Internet of Things
CN112881952A (en) * 2020-12-28 2021-06-01 国网江西省电力有限公司信息通信分公司 Magnetic field sensor and preparation method thereof

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1687811A (en) * 2005-04-29 2005-10-26 中国科学院上海光学精密机械研究所 Optical fiber grating wavelength demodulator
CN1760641A (en) * 2005-11-02 2006-04-19 浙江大学 Method and device for multiplexing and demodulating sensor based on optical fiber grating in long cycle
CN101183770A (en) * 2007-12-07 2008-05-21 北京交通大学 Full fiber tunable microwave, millimeter wave generating device
CN101718563A (en) * 2009-12-09 2010-06-02 北京理工大学 Phase-shift white light interferometry method based on 3*3 optical fiber coupler
JP2011215331A (en) * 2010-03-31 2011-10-27 Nec Corp Mach-zehnder interferometer, arrayed waveguide diffraction grating, and method for manufacturing mach-zehnder interferometer
CN102322991A (en) * 2011-08-26 2012-01-18 北京一轻研究院 Multi-angle stress sensor of polarization-preserving long period fiber grating (LPFG)
CN202661524U (en) * 2012-06-15 2013-01-09 天津光拓科技有限公司 Hybrid grating online temperature measurement type all-fiber current transformer
US20130243013A1 (en) * 2012-03-14 2013-09-19 Electronics And Telecommunications Research Institute Tunable laser module
CN103389172A (en) * 2013-07-25 2013-11-13 哈尔滨理工大学 Long-periodic grating based temperature sensor for demodulating ordinary fiber bragg grating
EP2741113A1 (en) * 2012-12-06 2014-06-11 Imec Integrated photonic devices with reduced sensitivity to external influences
CN104316106A (en) * 2014-10-28 2015-01-28 天津理工大学 Optical fiber sensor based on Mach-Zehnder interference and fiber bragg grating
CN104535090A (en) * 2014-12-16 2015-04-22 三峡大学 Wavelength-matched double FBG demodulation systems based on cascaded long period grating
CN105588661A (en) * 2015-11-12 2016-05-18 哈尔滨工程大学 Device for simultaneous measurement of single-point and regional temperatures through preserving polarization fiber grating
CN205958141U (en) * 2016-07-14 2017-02-15 盐城工学院 Temperature -detecting device based on receive long period fiber grating sensor a little

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1687811A (en) * 2005-04-29 2005-10-26 中国科学院上海光学精密机械研究所 Optical fiber grating wavelength demodulator
CN1760641A (en) * 2005-11-02 2006-04-19 浙江大学 Method and device for multiplexing and demodulating sensor based on optical fiber grating in long cycle
CN101183770A (en) * 2007-12-07 2008-05-21 北京交通大学 Full fiber tunable microwave, millimeter wave generating device
CN101718563A (en) * 2009-12-09 2010-06-02 北京理工大学 Phase-shift white light interferometry method based on 3*3 optical fiber coupler
JP2011215331A (en) * 2010-03-31 2011-10-27 Nec Corp Mach-zehnder interferometer, arrayed waveguide diffraction grating, and method for manufacturing mach-zehnder interferometer
CN102322991A (en) * 2011-08-26 2012-01-18 北京一轻研究院 Multi-angle stress sensor of polarization-preserving long period fiber grating (LPFG)
US20130243013A1 (en) * 2012-03-14 2013-09-19 Electronics And Telecommunications Research Institute Tunable laser module
CN202661524U (en) * 2012-06-15 2013-01-09 天津光拓科技有限公司 Hybrid grating online temperature measurement type all-fiber current transformer
EP2741113A1 (en) * 2012-12-06 2014-06-11 Imec Integrated photonic devices with reduced sensitivity to external influences
CN103389172A (en) * 2013-07-25 2013-11-13 哈尔滨理工大学 Long-periodic grating based temperature sensor for demodulating ordinary fiber bragg grating
CN104316106A (en) * 2014-10-28 2015-01-28 天津理工大学 Optical fiber sensor based on Mach-Zehnder interference and fiber bragg grating
CN104535090A (en) * 2014-12-16 2015-04-22 三峡大学 Wavelength-matched double FBG demodulation systems based on cascaded long period grating
CN105588661A (en) * 2015-11-12 2016-05-18 哈尔滨工程大学 Device for simultaneous measurement of single-point and regional temperatures through preserving polarization fiber grating
CN205958141U (en) * 2016-07-14 2017-02-15 盐城工学院 Temperature -detecting device based on receive long period fiber grating sensor a little

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108414112A (en) * 2018-02-08 2018-08-17 盐城工学院 A kind of Discrete Production Workshop device temperature monitoring device and method based on Internet of Things
CN112881952A (en) * 2020-12-28 2021-06-01 国网江西省电力有限公司信息通信分公司 Magnetic field sensor and preparation method thereof

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Denomination of invention: Temperature detection device and method based on micro nano long-period fiber grating sensor

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