CN106680595A - Double-probe electric field measurement device based on integrated optical waveguide - Google Patents
Double-probe electric field measurement device based on integrated optical waveguide Download PDFInfo
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- CN106680595A CN106680595A CN201510765269.3A CN201510765269A CN106680595A CN 106680595 A CN106680595 A CN 106680595A CN 201510765269 A CN201510765269 A CN 201510765269A CN 106680595 A CN106680595 A CN 106680595A
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- probe
- optical waveguide
- integrated optical
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0878—Sensors; antennas; probes; detectors
- G01R29/0885—Sensors; antennas; probes; detectors using optical probes, e.g. electro-optical, luminiscent, glow discharge, or optical interferometers
Abstract
The invention discloses a double-probe electric field measurement device based on an integrated optical waveguide. The double-probe electric field measurement device comprises a laser, an M-Z type integrated optical waveguide sensor, a photoelectric conversion device, a preamplifier, double electronic probes, a data processing and transmission system, and a pair of signal electrodes in the integrated optical waveguide sensor, wherein the laser is connected with the M-Z type integrated optical waveguide sensor through an optical fiber. After modulation by the M-Z type integrated optical waveguide sensor, laser is transmitted to the photoelectric conversion device through an optical fiber for being converted to an electric signal. The electric signal is amplified by the preamplifier and is output to the data processing and transmission system. One electronic probe in the double electronic probes is connected with one signal electrode in a pair of signal electrodes in the M-Z type integrated optical waveguide sensor, and the other electronic probe is connected with the other signal electrode through an insulated rod. The pair of signal electrodes are oppositely and parallelly arranged at two sides of the optical waveguide in the M-Z type integrated optical waveguide sensor.
Description
Technical field
The invention belongs to Space environment detection technical field, specifically, the present invention relates to a kind of based on collection
Into double probe field measurement devices of fiber waveguide
Background technology
Electromagnetic field is a kind of most important in universe, most common field, is the day for contacting high-altitude and subsurface information
Right medium.Electric field environment in space is detected, the change of electric field, magnetic field and ionosphere parameter is studied
Dependency, can be used for the monitoring of the natural disasters such as earthquake, volcano, for space weather to mankind's activity
The influence research of (including communication, navigation and GPS location etc.).At present, the survey of comparative maturity in the world
The method of quantity space electric field mainly has two kinds：Double probe electric field measurement methods and electronics drift electric field measurement method.
Anywhere wherein double probe measurements can work because its technology is simple, mature and reliable, its survey
Amount frequency range, up to MHz, is the main method for carrying out space electric field detection at present from DC, its measurement
Principle is as shown in Figure 1.The principle of double probe detection electric fields is to measure the potential difference between 2 points, its method
It is to stretch out two bars to space, installing in respective termination has the metal ball or metal cylinder being electrically insulated with it
Body is electric-field sensor as probe.Current potential on two probes and its each around plasma current potential
When consistent, the potential difference measured between two probes has just been obtained along boom divided by the distance between two probes
The electric field component in direction.
However, the signal transmission pathway of above-mentioned measuring method its connecting line, probe and outut device composition can
Emission source can be become, so as to produce interference to the electromagnetic field of tested region, while external electromagnetic field is at these
The electromagnetic induction phenomenon that equipment is produced, will cause measurement result substantial deviation actual value, in addition using cable
As signal transmission pathway, it is impossible to provide the path of high bandwidth, the frequency range of measurement is very limited.
The content of the invention
In consideration of it, a kind of it is an object of the invention to provide double probe electric field measurements based on integrated light guide
Device, the device is applied to integrated light guide Electro-optical Modulation technology in spatial electronic field measurement.Integrated light wave
The advantages of conductive optical sensor has input impedance height, fast response time, sensitivity height, high bandwidth, together
When Sensor section without the need for power supply injection just can realize measurement, i.e. passive measurement so will not be to tested
The electromagnetic field in region produces interference.The present invention is using Mach-Zehnder (M-Z) types integrated light guide electricity
Optical sensor, has the advantages that modulation efficiency is high, temperature stability is good, small volume.Therefore by double probes
Probe be connected with the signal electrode of M-Z type integrated light guide, by double probes and integrated light guide technology phase
With reference to being expected to realize high sensitivity, the spatial electronic field measurement ability of high bandwidth.
Present invention employs following technical scheme：
Based on double probe field measurement devices of integrated light guide, including the integrated light wave of laser instrument, M-Z type
Derivative sensor, photoelectric conversion device, preamplifier, bielectron probe, data processing and Transmission system
With a pair of signal electrodes inside the integrated light guide, wherein, the laser instrument for producing laser passes through
Fiber-optic transfer gives M-Z type integrated optical waveguide sensor, is filled to opto-electronic conversion by fiber-optic transfer Jing after its modulation
Put and be converted to the signal of telecommunication, then amplify output to data processing and Transmission system, double electricity through preamplifier
One of sub- probe is connected by one of a pair of signal electrodes in insulating bar and M-Z type integrated optical waveguide sensor
Connect, another electron probe is connected by insulating bar with another in signal electrode, a pair of signal electrodes
Opposed juxtaposition is arranged at the both sides of fiber waveguide in M-Z type integrated optical waveguide sensor, and space electric field is being entered
During row measurement, with the change of bielectron probe surrounding electric field, the electromotive force between electron probe also becomes therewith
Change, the change of electromotive force is modulated to M-Z type integrated optical waveguide sensor, makes through integrated light guide
The light intensity of sensor laser changes, and the optical signal after modulation is converted to electricity by photoelectric conversion device again
Signal, this electric potential signal after the amplification of low noise preamplifier the data processing that is input into cabin and
Transmission system.
Wherein, two electron probes are respectively placed in one end of insulating bar so that two probes in a distance, lead to
Electric field intensity actual measurement in this direction is obtained by the potential difference of two probes is crossed divided by the distance between two probes
Value.
Wherein, bielectron probe stretches out two bars to space, installs in respective termination and is electrically insulated with it
Metal ball or metal cylinder be electric-field sensor as probe.
Wherein, the current potential on two electron probes with its each around plasma current potential it is consistent when, survey
Measure the electricity that the potential difference between two probes has just obtained along boom direction divided by the distance between two probes
Field component.
Compared with prior art, the double probe field measurement devices based on integrated light guide of the invention, will
Integrated light guide Electro-optical Modulation technology is applied in spatial electronic field measurement, with advantages below：1)M-Z
Type integrated light guide fast response time, sensitivity are high, with great input impedance (>10G Ω), greatly
Measurement frequency scope and response speed are improve greatly；2) integrated optical waveguide sensor fast response time, spirit
Sensitivity is high, substantially increases measurement frequency scope and response speed, with higher bandwidth, in theory may be used
Realize the measurement from direct current to GHz；3) using optical fiber as signal transmission medium, photoelectricity electromagnetic measurement sets
Standby that radiation interference will not be produced to tested electromagnetic field, external electromagnetic field is also without interference with the light transmitted in optical fiber
Signal；4) measurement of various physical quantitys, such as frequency, phase place information can be carried out, and is not limited to electricity
The intensity of field, and it is almost undistorted to the measurement of electromagnetic field signal；5) Sensor section is noted without the need for power supply
Enter and just can realize measurement, i.e. passive measurement.M-Z type interferes formula integrated light guide electro-optical sensor to have
The advantages of modulation efficiency height, good temperature stability, small volume, therefore based on M-Z type integrated light guide
Double probe field measurement devices can realize high sensitivity, the spatial electronic field measurement ability of high bandwidth.
Description of the drawings
Fig. 1 is the structural representation of measurement apparatus in double probe electric field measurement methods in prior art.
Fig. 2 is the structural representation based on the probe-type field measurement device of M-Z type integrated light guide.
In figure：1- laser instrument, 2- optical fiber, 3-M-Z type integrated optical waveguide sensors, 4- opto-electronic conversion dress
Put, 5- preamplifiers, 6- electric-field probes, 7- integrated light guide signal electrodes, 8- data processings and biography
Defeated system.
Specific embodiment
Below in conjunction with the accompanying drawings to the present invention based on the probe-type field measurement device of M-Z type integrated light guide make into
The explanation of one step.
Referring to Fig. 2, Fig. 2 shows the knot based on the probe-type field measurement device of M-Z type integrated light guide
Structure schematic diagram.The double probe-type field measurement device based on M-Z type integrated light guide of the present invention, including
Laser instrument 1, M-Z type integrated optical waveguide sensor 3, photoelectric conversion device 4, preamplifier 5, double electricity
Sub- probe 6, data processing and Transmission system 8 and a pair of the signal electrodes 7 inside integrated light guide,
Wherein, the laser instrument 1 for producing laser is transferred to M-Z type integrated optical waveguide sensor 3 by optical fiber 2,
Photoelectric conversion device 4 is transferred to by optical fiber 2 Jing after its modulation and is converted to the signal of telecommunication, then it is preposition through low noise
Amplifier 5 amplify output to one of data processing and Transmission system 8, bielectron probe 6 by insulating bar with
One of a pair of signal electrodes 7 in M-Z type integrated optical waveguide sensor 3 connect, another electron probe 6
It is connected with another in signal electrode 7 by insulating bar, a pair of opposed juxtapositions of signal electrode 7 are arranged at
The both sides of fiber waveguide in M-Z type integrated optical waveguide sensor 3, when measuring to space electric field, with
The change of the surrounding electric field of bielectron probe 6, the electromotive force between electron probe 6 also changes therewith, electromotive force
Change is modulated to M-Z type integrated optical waveguide sensor 3, makes to swash 3 light through integrated optical waveguide sensor
Light intensity change, the optical signal after modulation is converted to the signal of telecommunication by photoelectric conversion device 4 again, this
Data processing and transmission system that one electric potential signal is input into cabin after the amplification of low noise preamplifier
System 8.
Because two probes are respectively placed in one end of boom so that two probes in a distance, therefore by two
The potential difference of probe can obtain electric field intensity measured value in this direction divided by the distance between two probes.
In electric field detector based on M-Z type integrated light guide, the detection performance of the structure of probe to electric field
Affect very big, therefore the design of probe is most important.In order to be able to reach desired voltage measurement, need preposition
The input impedance of amplifying circuit is as far as possible high, and input capacitance should be as far as possible little so that designed probe has
Broadband, Larger Dynamic scope, low frequency drift and the features such as low noise, at the same have high temperature adaptation ability and
Reliability.
In data processing and Transmission system, a series of process such as signal Jing differential amplifications and filtering detection
Afterwards, Jing A/D are converted into digital signal output in remote measurement transmission data bus, meanwhile, to important wave band
Waveform acquisition and spectrum analyses are done, and outputs data to bus.System control module is responsible for completing to passing
The control of sensor probe detection and the control of programmable amplifier.
Although giving detailed description to specific implementation of the patent mode above and illustrating, should refer to
Bright, we can carry out various equivalent changes to above-mentioned embodiment according to the conception of patent of the present invention
And modification, the function produced by it still without departing from description and accompanying drawing covered it is spiritual when, all should
Within protection scope of the present invention.
Claims (4)
1. a kind of double probe field measurement devices based on integrated light guide, including laser instrument, M-Z type collection
Into optical waveguide sensor, photoelectric conversion device, preamplifier, bielectron probe, data processing and biography
Defeated system and a pair of signal electrodes in integrated optical waveguide sensor, wherein, for producing laser
Laser instrument gives M-Z type integrated optical waveguide sensor by fiber-optic transfer, is given by fiber-optic transfer Jing after its modulation
Photoelectric conversion device is converted to the signal of telecommunication, then amplifies output to data processing and transmission through preamplifier
One of system, bielectron probe are by a pair of signals in insulating bar and M-Z type integrated optical waveguide sensor
One of electrode connects, and another electron probe is connected by insulating bar with another in signal electrode, and one
The both sides of fiber waveguide in M-Z type integrated optical waveguide sensor are arranged to signal electrode opposed juxtaposition, right
It is electronic between electron probe with the change of bielectron probe surrounding electric field when space electric field is measured
Gesture also changes therewith, and the change of electromotive force is modulated to M-Z type integrated optical waveguide sensor, make through
The light intensity of integrated optical waveguide sensor laser changes, and the optical signal after modulation is filled again by opto-electronic conversion
Put and be converted to the signal of telecommunication, this electric potential signal is input into cabin after the amplification of low noise preamplifier
Data processing and Transmission system.
2. double probe field measurement devices of integrated light guide are based on as claimed in claim 1, wherein,
Two electron probes are respectively placed in one end of insulating bar so that two probes in a distance, by two probes
Potential difference can obtain electric field intensity measured value in this direction divided by the distance between two probes.
3. double probe field measurement devices of integrated light guide are based on as claimed in claim 1, wherein,
Two bars are stretched out in bielectron probe to space, respective termination install have with it the metal ball that is electrically insulated or
Metal cylinder is electric-field sensor as probe.
4. double probe field measurement devices of integrated light guide are based on as claimed in claim 1, wherein,
Current potential on two electron probes with its each around plasma current potential it is consistent when, measure two probes
Between the potential difference electric field component that just obtained divided by the distance between two probes along boom direction.
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| CN201510765269.3A CN106680595B (en) | 2015-11-11 | 2015-11-11 | Double probe field measurement devices based on integrated light guide |
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| CN201510765269.3A CN106680595B (en) | 2015-11-11 | 2015-11-11 | Double probe field measurement devices based on integrated light guide |
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| CN106680595B CN106680595B (en) | 2019-09-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106970273A (en) * | 2017-03-30 | 2017-07-21 | 北京卫星环境工程研究所 | Spiralism type surface potential measurement device based on Electro-optical Modulation |
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Cited By (2)
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| CN106970273A (en) * | 2017-03-30 | 2017-07-21 | 北京卫星环境工程研究所 | Spiralism type surface potential measurement device based on Electro-optical Modulation |
| CN106970273B (en) * | 2017-03-30 | 2019-10-29 | 北京卫星环境工程研究所 | Spiralism type surface potential measurement device based on Electro-optical Modulation |
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