CN106404176A - Spectrum detection device and method based on integrated device - Google Patents
Spectrum detection device and method based on integrated device Download PDFInfo
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- CN106404176A CN106404176A CN201611029407.2A CN201611029407A CN106404176A CN 106404176 A CN106404176 A CN 106404176A CN 201611029407 A CN201611029407 A CN 201611029407A CN 106404176 A CN106404176 A CN 106404176A
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- electroabsorption modulator
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- 238000001228 spectrum Methods 0.000 title claims abstract description 36
- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 238000004891 communication Methods 0.000 claims abstract description 17
- 238000012545 processing Methods 0.000 claims abstract description 17
- 238000010521 absorption reaction Methods 0.000 claims abstract description 8
- 238000012360 testing method Methods 0.000 claims abstract description 7
- 238000005070 sampling Methods 0.000 claims abstract description 4
- 230000003287 optical effect Effects 0.000 claims description 10
- 230000003595 spectral effect Effects 0.000 claims description 8
- 230000010354 integration Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 3
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- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 238000000691 measurement method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000000862 absorption spectrum Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000005699 Stark effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002050 diffraction method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
Abstract
The present invention discloses a spectrum detection device and method based on an integrated device. The detection device comprises a master control module, a bias generator, an electric absorption modulator, a signal processing module and an analog-digital conversion module which are connected in series in order. The master control module is connected with a display module and a communication module, the display module is configured to display the work state and the correlation parameters of the device, and the communication module is configured to transmit the real spectrum converted by the device and the relevant data to related devices through wire or wireless communication protocols. The measurement method comprises: the step 1, allowing the light to be detected to irradiate on the electric absorption modulator; the step 2, amplifying the light to be detected to the level fitting for the sampling of the analog-digital conversion module; the step 3, transmitting the amplified light to be detected to the master control module; the step 4, setting bias voltage; the step 5, measuring an integral spectrum; and the step 6, completing the test. The spectrum detection device and method based on the integrated device are small in size and low in cost and can be widely applied.
Description
Technical field
The present invention relates to a kind of spectrum detection device and method, particularly to a kind of spectral detection based on integrated device dress
Put and method.
Background technology
At present, spectral detection is critically important e measurement technology, and in environment, safety, communication, the multiple fields such as Fibre Optical Sensor are all
Play the role of important, integrated low cost, the spectrum detection technique of small size has good development prospect.Pass in communication and optical fiber
Sense field, is limited by optical fiber transmission window, and wave-length coverage is concentrated mainly in the wave-length coverage of 1260nm to 1650nm, at this
In individual wave-length coverage, have benefited from the development of optical communications industry, occur in that a lot of technology detecting spectrum, such as grating Diffraction Method,
Tunable optic filter method, tunable laser method etc..But the cost of these methods is all higher, and measuring speed is also relatively slow, difficult
To realize the high speed spectral detection of low cost.
Content of the invention
The invention aims to solving that measuring speed in existing spectrum detection technique is slow and the asking of high cost
A kind of spectrum detection device based on integrated device inscribed and provide and method.
What the present invention provided includes main control module, bias generator, electricity suction based on the spectrum detection device of integrated device
Receive manipulator, signal processing module and analog-to-digital conversion module, at main control module and bias generator, electroabsorption modulator, signal
Reason module and analog-to-digital conversion module are in series successively.
Main control module is also associated with display module and communication module, and display module is used for working condition and the phase of display device
Related parameter, communication module be used for the actual spectrum that device is changed and related data by wired or wireless communication protocol transmission to
Relevant device.
Bias generator is used for providing reverse bias voltage to electroabsorption modulator；Electroabsorption modulator is used for optical signal
Be converted to the signal of telecommunication；Signal processing module is used for current signal is converted to the voltage signal of amplification；Analog-to-digital conversion module is used for
Voltage signal is converted to digital signal, and is sent to main control module；Main control module be used for analyzing electroabsorption modulator bias and
Absorb the curve of light intensity, differential calculation is carried out to this curve, the spectrum of reality can be restored, electroabsorption modulator is weight
Sub- trap electroabsorption modulator, bias generator is Dc bias generator, and the bias amplitude of output is 0-100V, analog digital conversion mould
Block adopts ADC.
The spectral method of detection based on integrated device that the present invention provides, concrete grammar is as described below：
Step one, will treat that light-metering is incided in electroabsorption modulator, electroabsorption modulator converts optical signals to the signal of telecommunication
Output current；It is transferred to signal processing module；
The current signal that electroabsorption modulator exports is converted to voltage signal by step 2, signal processing module, and amplifies
To the level being suitable for analog-to-digital conversion module sampling；
Voltage signal is converted to digital signal by step 3, analog-to-digital conversion module, and is transferred to main control module；
Step 4, main control module can control bias generator to arrive in 0V by digital-to-analogue conversion or pulse width modulation
Adjust between the running voltage of electroabsorption modulator, bias voltage is set；
After step 5, main control module setting bias voltage, the voltage after electroabsorption modulator conditioning is acquired, and leads to
Cross the relation of electroabsorption modulator voltage and current, measure integration spectrum；
Step 6, main control module pass through differential algorithm, and integration spectrum is converted to actual spectrum, complete to test.
Beneficial effects of the present invention：
The spectrum detection device based on integrated device that the present invention provides and method are capable of quickly, low cost, corpusculum
Long-pending spectral detection.Due to its small volume, low cost, Channel Detection in optical communications, and in fiber grating sensing technology
In, can get a lot of applications.
Brief description
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is the schematic flow sheet of the inventive method.
Fig. 3 is optical absorption spectra test result schematic diagram under different bias voltages.
Fig. 4 is a kind of typical signal converter amplifier circuit schematic diagram.
Fig. 5 is light intensity and wavelength schematic diagram and photoelectric current and V diagram.
1st, main control module 2, bias generator 3, electroabsorption modulator 4, signal processing module
5th, analog-to-digital conversion module 6, display module 7, communication module.
Specific embodiment
Refer to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5：
What the present invention provided includes main control module 1, bias generator 2, electricity based on the spectrum detection device of integrated device
Absorption modulation device 3, signal processing module 4 and analog-to-digital conversion module 5, main control module 1 and bias generator 2, electroabsorption modulator
3rd, signal processing module 4 and analog-to-digital conversion module 5 are in series successively.
Main control module 1 is also associated with display module 6 and communication module 7, and display module 6 is used for the working condition of display device
And relevant parameter, communication module 7 is used for the actual spectrum changing device and related data passes through wired or wireless communication agreement
It is transferred to relevant device.
Bias generator 2 is used for providing reverse bias voltage to electroabsorption modulator 3；Electroabsorption modulator 3 is used for light
Signal is converted to the signal of telecommunication；Signal processing module 4 is used for current signal is converted to the voltage signal of amplification；Analog-to-digital conversion module
5 are used for for voltage signal being converted to digital signal, and are sent to main control module 1；Main control module 1 is used for analyzing electroabsorption modulator
3 biass and the curve absorbing light intensity, carry out differential calculation to this curve, can restore the spectrum of reality, electroabsorption modulator 3
For multiple quantum trap electroabsorption modulator, bias generator 2 is Dc bias generator, and the bias amplitude of output is 0-100V,
Analog-to-digital conversion module 5 adopts ADC.
The spectral method of detection based on integrated device that the present invention provides, concrete grammar is as described below：
Step one, will treat that light-metering is incided in electroabsorption modulator 3, electroabsorption modulator 3 converts optical signals to telecommunications
Number output current；It is transferred to signal processing module 4；
The current signal that electroabsorption modulator 3 exports is converted to voltage signal, and puts by step 2, signal processing module 4
The big level arriving suitable analog-to-digital conversion module 5 sampling；
Voltage signal is converted to digital signal by step 3, analog-to-digital conversion module 5, and is transferred to main control module 1；
Step 4, main control module 1 can control bias generator 2 in 0V by digital-to-analogue conversion or pulse width modulation
Adjust between the running voltage of electroabsorption modulator 3, bias voltage is set；
After step 5, main control module 1 setting bias voltage, the voltage after electroabsorption modulator 3 conditioning is acquired, and
By the relation of electroabsorption modulator 3 voltage and current, measure integration spectrum；
Step 6, main control module 1 pass through differential algorithm, and integration spectrum is converted to actual spectrum, complete to test.
As shown in Figure 3：For optical absorption spectra test result under different bias voltages, it can be seen that the suction of quantum-well materials
Receive peak under External Electrical Field to long wave length direction occur " shifting ", and the intensity at exciton absorption peak with extra electric field increase and
Reduce, simultaneously as the reduction of exciton bind energy makes exciton lifetime shorten, cause the notable broadening of absorption spectra, so that exciton
Absworption peak show under big External Electrical Field inconspicuous, above experimental result with based on quantum confinement stark effect (QCSE)
Theory analysis consistent.
As shown in Figure 4：For a kind of typical signal converter amplifier circuit.Based on the empty short principle of integrated circuit, be equivalent to EA
A terminal voltage be EAbias, one end be 0, formed reverse bias；
The electric current that EA produces flows through across resistance, and output voltage is：
V=IEA*R
The input of wherein analog-to-digital conversion module 5 is connected to signal processing module 4, and outfan is connected to main control module 1, mould
Count modular converter 5 and be used for receiving voltage signal, and be converted to digital signal and send main control module 1 to.
Wherein main control module 1 is used for analyzing electroabsorption modulator 3 and biases, and adjusts bias generator 2, and main control module 1 is also
Voltage after EA current regulating is acquired, and by the relation of electroabsorption modulator 3 voltage and current, measures integral light
Spectrum, and this curve is carried out with differential etc. calculate it is possible to restore the spectrum of reality, it should be noted that actually EA's is oblique
Side is not so steep, and we can carry out convolution using a function pair original function, to recover the waveform of steeper, paints
The absorption curve of actual test EA, does deconvolution and achieves that.
As shown in Figure 5：For light intensity and wavelength schematic diagram and photoelectric current and V diagram.The latter's curve is carried out micro-
Point, you can obtain spectrum.
This spectral method of detection based on integrated device, determine method with traditional spectrum compared with, simple to operate, cost
Relatively low, small volume, it is possible to achieve real-time continuous measure, and have highly reliable, the advantages of high precision.
Claims (4)
1. a kind of spectrum detection device based on integrated device it is characterised in that：Include main control module, bias generator, electricity
Absorption modulation device, signal processing module and analog-to-digital conversion module, main control module and bias generator, electroabsorption modulator, signal
Processing module and analog-to-digital conversion module are in series successively.
2. a kind of spectrum detection device based on integrated device according to claim 1 it is characterised in that：Described master control
Module is also associated with display module and communication module, and display module is used for working condition and the relevant parameter of display device, communication
Module passes through wired or wireless communication protocol transmission to relevant device for the actual spectrum changing device and related data.
3. a kind of spectrum detection device based on integrated device according to claim 1 it is characterised in that：Described bias
Generator is used for providing reverse bias voltage to electroabsorption modulator；Electroabsorption modulator is used for converting optical signals to telecommunications
Number；Signal processing module is used for current signal is converted to the voltage signal of amplification；Analog-to-digital conversion module is used for voltage signal
Be converted to digital signal, and be sent to main control module；Main control module is used for analyzing electroabsorption modulator bias and absorbs light intensity
Curve, carries out differential calculation to this curve, can restore the spectrum of reality, and electroabsorption modulator is multiple quantum trap electric absorption
Manipulator, bias generator is Dc bias generator, and the bias amplitude of output is 0-100V, and analog-to-digital conversion module adopts ADC.
4. a kind of spectral method of detection based on integrated device it is characterised in that：Concrete grammar is as described below：
Step one, will treat that light-metering is incided in electroabsorption modulator, electroabsorption modulator converts optical signals to electric signal output
Electric current；It is transferred to signal processing module；
The current signal that electroabsorption modulator exports is converted to voltage signal by step 2, signal processing module, and is amplified to suitable
Close the level of analog-to-digital conversion module sampling；
Voltage signal is converted to digital signal by step 3, analog-to-digital conversion module, and is transferred to main control module；
Step 4, main control module can control bias generator to inhale to electricity in 0V by digital-to-analogue conversion or pulse width modulation
Receive and adjust between the running voltage of manipulator, bias voltage is set；
After step 5, main control module setting bias voltage, the voltage after electroabsorption modulator conditioning is acquired, and by electricity
The relation of Absorption modulation device voltage and current, measures integration spectrum；
Step 6, main control module pass through differential algorithm, and integration spectrum is converted to actual spectrum, complete to test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611029407.2A CN106404176B (en) | 2016-11-14 | 2016-11-14 | A kind of spectrum detection device and method based on integrated device |
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| CN201611029407.2A CN106404176B (en) | 2016-11-14 | 2016-11-14 | A kind of spectrum detection device and method based on integrated device |
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| CN106404176B CN106404176B (en) | 2018-03-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112229518A (en) * | 2020-10-16 | 2021-01-15 | 武汉电信器件有限公司 | Method, device and equipment for measuring chip absorption spectrum and storage medium |
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2016
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Patent Citations (10)
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| US20020182649A1 (en) * | 2001-02-01 | 2002-12-05 | Ciphergen Biosystems, Inc. | Methods for protein identification, characterization and sequencing by tandem mass spectrometry |
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| CN101915615A (en) * | 2010-07-08 | 2010-12-15 | 北京农业智能装备技术研究中心 | Portable field spectroradiometer |
| EP2407776A1 (en) * | 2010-07-14 | 2012-01-18 | KROHNE Analytics GmbH | Sensor for fluid and/or gas analysis |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112229518A (en) * | 2020-10-16 | 2021-01-15 | 武汉电信器件有限公司 | Method, device and equipment for measuring chip absorption spectrum and storage medium |
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