CN108204824A - A kind of photodetector detection device and detection method - Google Patents
A kind of photodetector detection device and detection method Download PDFInfo
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- CN108204824A CN108204824A CN201611177769.6A CN201611177769A CN108204824A CN 108204824 A CN108204824 A CN 108204824A CN 201611177769 A CN201611177769 A CN 201611177769A CN 108204824 A CN108204824 A CN 108204824A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
- G01C25/005—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass initial alignment, calibration or starting-up of inertial devices
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Abstract
The present invention provides a kind of photodetector detection device, including sequentially connected photodetector to be detected, data acquisition module, computer, driving current control module, light source driver module, light source module, coupler, the temperature control modules being connect with computer, measuring light power module are further included；One end output of coupler is connect with photodetector to be detected, and other end output is connect with measuring light power module；Photodetector to be detected is set in temperature control modules.The present invention also provides a kind of photodetector detection methods, can detect the parameters such as noise voltage, zero-bit level, zero drift, responsiveness, noise equivalent power, the dynamic range of photodetector.The present invention can realize the automatic detection of photodetector, reduce manual operation, save manpower and time, especially when carrying out mass detection, improve production efficiency, reduce the error for artificially measuring and bringing.
Description
Technical field
The present invention relates to a kind of detection device and detection method more particularly to a kind of photodetector detection device and detections
Method belongs to optical fibre gyro field, is related to the PC ends control platform of optical fibre gyro photodetector detection.
Background technology
Photodetector is the core building block of optical fibre gyro.Photodetector plays optical signal conversion in optical fibre gyro
The effect for being acted on into electric signal and amplifying electric signal.As optical fibre gyro is in civilian goods, the application of military field, photoelectricity is visited
The performance for surveying device also receives much attention, and working performance directly affects the performance and reliability of optical fibre gyro.And in practical production
In the process, the means that the full temperature detector of photodetector is surveyed directly affect the manufacturing schedule and reliability of optical fibre gyro with technology.It is existing
It is that corresponding test temperature is set by high-low temperature test chamber in detection, is tested after temperature stablizes 10min, using manual
The size of light source driving instrument driving current is debugged, different luminous powers is then loaded to photodetector, is supplied to photodetector
Electricity is converted into DC voltage value with oscilloscope measurement optical signal.Due to needed in the full temperature test of photodetector to its into
The test of the multiple temperature spots of row, and long to device soaking time is tested to debug test manually, directly restricts detection speed,
Occupy the time of testing staff.Moreover, in optical fibre gyro produces, it is necessary to photodetector is detected to ensure that it is full
The certain index of foot, therefore inefficient photodetector detection process affects the production efficiency of optical fibre gyro so that in light
Fine gyro production efficiency is low.Existing detection device is that the manual light source that adjusts drives instrument, then utilizes oscillograph recording data meter
It draws a conclusion.Moreover, be not provided with the coupler that can be divided in existing apparatus, need first to record testing light source before test and exist
Then watt level under different driving electric current accesses photodetector and is tested again.
Invention content
To improve, detection speed is slow, occupies the time of testing staff in the full temperature test of existing photodetector so that
The problem of optical fibre gyro production efficiency is low proposes a kind of photodetector detection device.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：A kind of photodetector detection device, packet
Include light source driver module, light source module, data acquisition module, measuring light power module, computer, temperature control modules, to be checked
Survey photodetector, driving current control module, coupler；The photodetector to be detected, data acquisition module, calculating
Machine, driving current control module, light source driver module, light source module, coupler are sequentially connected；One end output of the coupler
It is connect with photodetector to be detected, the other end output of coupler is connect with measuring light power module；The temperature controls mould
Block, measuring light power module are connect with computer；The photodetector to be detected is set in temperature control modules.
In the present invention, driving current control module is controlled by computer, adjusts the driving of light source driver module
The size of electric current, so as to the size of luminous power that light source module is controlled to export.When the different luminous power of SLD light source outputs, treat
Detection photodetector can respond different DC voltages, and the fiber other end of coupler is connect with light power meter.It utilizes
The output light of SLD light sources is divided into two beams by the light splitting function of coupler, and output light is transported in photodetector to be detected all the way,
As the input of photodetector to be detected, another way output light is transported in light power meter, realizes the detection of luminous power.Utilize meter
The data of the luminous power for the light source module that calculation machine measures measuring light power module are acquired.By the output of data acquisition module
As a result it is sent to computer to be further processed, obtains the parameters of photodetector to be detected.
Further, the first cable being set between measuring light power module and computer, the luminous power are further included
Measurement module is provided with gpib interface, and measuring light power module is connect by first cable with computer.Light power meter leads to
It crosses gpib interface and the first cable is connected with computer, computer is realized by upper computer software and light power meter state is controlled,
And receive, handle the test result of light power meter.
Further, the second cable being set between temperature control modules and computer, the temperature control are further included
Module is provided with gpib interface, and the temperature control modules are connect by second cable with computer.Temperature control modules
It is connected by gpib interface and the second cable with computer, computer is realized by upper computer software and worked high-low temperature test chamber
State controls.
Further, the data acquisition module is provided with communication interface, and data acquisition module passes through the communication interface
It is connect with computer.
Further, the data acquisition module is microcontroller or DSP.
Further, the light source module is SLD light source modules.
Further, it is additionally provided with radiating bottom plate below light source module.
The present invention also provides a kind of photodetector detection method, the photodetector detection method utilizes claim
Photodetector detection device described in any one of 1-7 realizes that the light source driver module is used to drive light source module
It is dynamic；The driving current control module is used to provide driving current for light source driver module；The measuring light power module is used for
Measure the light source power of light source module；The temperature control modules are used for the temperature of environment where controlling photodetector to be detected
Value；The data acquisition module is used to acquire the output of the photodetector to be detected with fixed cycle N；The period N's
Ranging from 0.001s≤N≤5s；The computer is used for the output of gathered data acquisition module, measuring light power module, and right
Driving current control module, temperature control modules, measuring light power module are controlled；The photodetector detection method packet
Include following steps：
(1) light source driver module is closed, using the output signal of computer data acquisition acquisition module, calculates light to be detected
The noise voltage of electric explorer, zero-bit level, zero drift；
(2) light source driver module is opened, utilizes output signal of the computer to data acquisition module, measuring light power module
Output signal be acquired, calculate the responsiveness of photodetector to be detected；
(3) profit is computerizedd control driving current control module so that the letter of the output signal of photodetector to be detected
It makes an uproar than being 1:1, the output power of measuring light power module is acquired, calculates the noise equivalent power of photodetector to be detected；
(4) profit is computerizedd control driving current control module so that the output current increase of driving current control module,
Noise voltage, the saturation voltage of photodetector to be detected are acquired, calculates the dynamic range of photodetector to be detected；
(5) using computer in [T1,T2] within the temperature range of using Δ T as variable quantity adjust temperature control modules temperature,
The value range of Δ T is 0.1 °≤Δ T≤5 °, is visited according to photoelectricity to be detected under each temperature spot of above-mentioned steps (1)-(4) calculating
The noise voltage of survey device, zero-bit level, zero drift, responsiveness, noise equivalent power, dynamic range.
Device and method proposed by the present invention realize the automatic detection of photodetector, in the actual production process significantly
Reduce artificial operation, save manpower and time, when especially large batch of photodetector is detected, not only improve
Production efficiency, and reduce error caused by artificial measure.The device of the invention high degree of automation, in photodetection
The context of detection of device, which is gathered around, to have broad application prospects.By setting coupler, using the light splitting function of coupler, by the defeated of light source
Light extraction is divided into two beams, and output light is transported in photodetector to be detected all the way, another as the input of photodetector to be detected
Road output light is transported in light power meter, realizes the detection of luminous power, consequently facilitating synchronous acquisition photodetector to be detected is defeated
Enter power and its output signal, therefore can realize the quick measurement of the parameters of photodetector.It is provided by the present invention
Optical fibre gyro photodetector detection device and detection method using existing computer resource, carry out data acquisition, using logical
Believe principle, automatic control technology, greatly improve optical fibre gyro photodetector detection efficiency.
Description of the drawings
Fig. 1 is the structure diagram of the photodetector detection device of the present invention；
Fig. 2 is the step schematic diagram of the photodetector detection method of the present invention；
In figure, 1, light source driver module, 2, light source module, 3, data acquisition module, 4, measuring light power module, 5, calculate
Machine, 6, temperature control modules, 7, photodetector to be detected, 8, driving current control module, 9, coupler.
Specific embodiment
The photodetector detection device of the present invention is described further referring to Fig. 1, Fig. 2.
Fig. 1 is the structure diagram of the photodetector detection device of the present invention.Photodetector detection device includes light
Source drive module 1, data acquisition module 3, measuring light power module 4, computer 5, temperature control modules 6, is treated light source module 2
Detect photodetector 7, driving current control module 8, coupler 9, the driving current control module 8, light source driver module
1st, light source module 2, coupler 9 are sequentially connected, and the photodetector 7 to be detected is connect with data acquisition module 3, light to be detected
Electric explorer 7 is set in temperature control modules 6, and one end output of the coupler 9 is connect with photodetector 7 to be detected,
Coupler 9 the other end output connect with measuring light power module 4, the driving current control module 8, temperature control modules 6,
Data acquisition module 3, measuring light power module 4 are connect with computer 5.
The photodetector detection device of the present invention further includes the first cable, the second cable, and the first cable is set to light work(
Between rate measurement module 4 and computer 5, the second cable is set between temperature control modules 6 and computer 5.The luminous power
Measurement module 4 is provided with gpib interface, and measuring light power module 4 is connect by first cable with computer 5.The temperature
Control module 6 is provided with gpib interface, and the temperature control modules 6 are connect by second cable with computer 5.The number
Acquisition module 3 is provided with communication interface, data acquisition module 3 is connect by communication interface with computer.
Light source driver module 1 drives instrument using full-automatic SLD light sources, and light source module 2 uses SLD light sources, data acquisition module
Block 3 is microcontroller or DSP, and measuring light power module 4 uses light power meter, and temperature control modules 6 use high-low temperature test chamber, drive
Streaming current control module 8 is apparatus for transmitting signal.In the course of work, computer 5 sends order, and driving current control module 8 connects
Order is received, drives the GPIB of instrument that light source is controlled to drive instrument by light source, computer 5 sends order, realizes driving current control
Module 8 carries out the control to light source driving instrument, so as to control the size of light source luminous power.Light source module 2 is additionally provided with scattered below
Hot bottom plate.
(1) driving current control module
Full-automatic SLD light sources driving instrument is connect with driving current control module 8, and computer 5 is by controlling driving current control
Molding block 8 so that driving current control module 8 exports required driving current, so as to be controlled automatically to the luminous power of SLD light sources
System, when exporting different driving currents by the adjusting driving current control module 8 of computer 5, SLD light source outputs are not
Same luminous power.
Driving current control module 8 is controlled by computer 5, adjusting light source drives the big of the driving current of instrument
It is small, so as to control the size of the luminous power of SLD light source outputs, that is, load on luminous power on 7 input terminal of photodetector to be detected
Size variation.
SLD light sources driving instrument is connect with SLD light sources, and SLD light sources driving instrument can export adjustable driving current.For not
Same driving current, light source module 2 export different luminous powers.
(2) SLD light sources, SLD light sources driving instrument
SLD light sources bottom applies heat-conducting silicone grease, and on radiating bottom plate, full-automatic SLD light sources driving instrument connects with SLD light sources
Connect, the photodetector to be detected 7 being connect with the tail optical fiber of coupler 9 be mounted on high-low temperature test chamber in, data acquisition module 3 with
Photodetector 7 to be detected connects, and data acquisition module 3 is connect with computer 5, and the luminous power test side of light power meter is with coupling
The output terminal of device 9 is connected.
SLD light sources drive instrument line to be driven to connect by SLD light sources with SLD light sources.
The tail optical fiber of SLD light sources is coupled with fiber adapter, then by the selected measuring light power mould of fiber adapter access
The channel of block 4 forms the test access that light source driver module 1 arrives measuring light power module 4 to light source module 2.By setting light
Fine adapter can reduce heat sealing machine welding, reduce welding step, stream is simplified in batch detection during the test
Journey.
Optical fiber connector is the device that detachable (activity) connection is carried out between optical fiber and optical fiber, it is two optical fiber
End face precision docking is got up, so that the light energy of launching fiber output can be coupled in reception optical fiber, and make to the maximum extent
It influences to be minimized caused by system since it intervenes optical link, this is the basic demand of optical fiber connector.In certain journey
On degree, optical fiber connector also affects the reliability and properties of optical transmission system.
(3) coupler
The tail optical fiber of photodetector 7 to be detected is connect with one end of the fiber of coupler 9, and the tail optical fiber of SLD light sources is with coupling
Device 9 enters fine connection, and when the different luminous power of SLD light source outputs, photodetector 7 to be detected can respond different direct currents
Pressure, and the fiber other end of coupler 9 is connect with light power meter.Using the light splitting function of coupler 9, by the defeated of SLD light sources
Light extraction is divided into two beams, and output light is transported in photodetector 7 to be detected all the way, as the input of photodetector 7 to be detected, separately
Output light is transported in light power meter all the way, realizes the detection of luminous power.
(4) light power meter
Measuring light power module 4 uses light power meter.Light power meter is used to detect light source power.Light power meter carries GPIB
To computer 5 corresponding GPIB cards are configured, and GPIB card drivers are installed on computer 5 in interface.Computer 5 and light
Connected between power meter by gpib interface and the first cable, regard computer 5 as the controller of GPIB, light power meter as by
It communicates between control equipment and computer 5, after suitable order operation, computer 5 controls light power meter by GPIB,
Realize that the panel of the real-time data acquisition of luminous power data, data calculation and the light power meter that measure light power meter controls, nothing
Need reviewer be test certain temperature spot light source power and the moment observation high-low temperature test chamber temperature.
(5) temperature control modules
Temperature control modules 6 use high-low temperature test chamber.High-low temperature test chamber passes through gpib interface and the second cable and meter
Calculation machine 5 is connected, and computer 5 is realized by upper computer software to high-low temperature test chamber working state control.By setting program, lead to
The temperature of 5 adjust automatically high-low temperature test chamber of computer is crossed, can realize and measure photodetector 7 to be detected at different temperatures
Output signal.
(6) data acquisition module 3
The output data that data acquisition module 3 treats detection photodetector 7 carries out real-time sampling, data acquisition module 3
With analog-digital conversion function.Pass through the functions such as the signal amplification conditioning of data acquisition module 3, A/D samplings so that photoelectricity to be detected
The output voltage of detector 7 is converted to digital quantity, and measurement result is sent to computer 5 by communication interface by analog quantity.
Upper computer software is set on computer 5, data are shown, handle, preserve and are exported using upper computer software.Communication interface
RS-422 communication interfaces can be used.
The output signal of light power meter and photodetector to be detected 7 is acquired by upper computer software, by needed for
The parameter value wanted is shown in real time by interface, to realize automatic measurement.
Detection device is powered, and computer 5 drives full-automatic SLD light sources in instrument 1 by upper computer software, and light power meter is high
Low-temperature test chamber requires to be controlled according to 7 test event of photodetector to be detected, and upper computer software treats detection light electrical resistivity survey
Output voltage, the input optical power of survey device 7 are acquired, operation, display and data preserve.Realize photodetector 7 to be detected
Automatic detection.
The major parameter of photodetector has sensitivity, noise voltage, responsiveness, dynamic range, zero-bit level and drift.
As shown in Fig. 2, photodetector detection method proposed by the present invention includes the following steps：
(1) light source driver module 1 is closed, using the output voltage of 5 gathered data acquisition module 3 of computer, is calculated to be checked
Survey the noise voltage, zero-bit level, zero drift of photodetector 3.
A, the noise voltage of photodetector to be detected：During optical fibre gyro opto-electronic conversion, noise can be introduced, across resistance
Circuit can also introduce noise.The noise voltage of photodetector is a comprehensive noise voltage, it is generally the case that detection photoelectricity
The noise voltage of detector be detection photodetector under defined operating voltage, output noise voltage during without incident light
Virtual value.It first has to, when light source driving is turned off, carry out test acquisition, collected when being unglazed input, photodetection
The noise voltage error of device output, in calculating process, needs to subtract error voltage.Photodetector was changed in progress photoelectricity dress
Cheng Zhong, can introduce noise, transimpedance circuit can also introduce noise, all making an uproar of the noise voltage concentrated expression of detector assembly
Psophometric voltage, by detecting photodetector under defined operating voltage, the virtual value of noise voltage during without incident light.
B, the zero-bit level of photodetector to be detected：Photodetector is in the DC quantity of no incident light output voltage
The zero-bit level of photodetector, zero-bit level reflect the dark current output of photodetector and preposition biasing.Photoelectricity is visited
Device is surveyed when not having incident light, the DC quantity of output voltage is defined as zero-bit level, and zero-bit level reflects the dark electricity of detector
Stream output and preposition amplification.The DC quantity of output voltage when the zero-bit level of photodetector is no incident light irradiation.
C, the zero drift of photodetector to be detected：Zero-bit level is slowly varying at any time to be known as zero drift, it is anti-
The drift of photodetector dark current and the DC potential drift of amplifying circuit are reflected.The slowly varying title of zero-bit level at any time
For zero drift.
(2) light source driver module 1 is opened, utilizes output voltage of the computer 5 to data acquisition module 3, measuring light power
The output power of module 4 is acquired, and calculates the responsiveness of photodetector 3 to be detected.
The test of the responsiveness of photodetector 7 to be detected is by adjusting the big of the driving current of SLD light sources driving instrument
It is small, change the size for the luminous power that light source module 2 exports, and the size of luminous power directly affects the conversion electricity of photodetector
The size of pressure.The voltage value under multiple and different luminous powers is tested, light power and the relationship of voltage can be fitted, then by defeated
The relationship of optical power and voltage can calculate the responsiveness of photodetector to be detected.
The responsiveness of photodetector is actually to reflect the finger of the sensitivity of photodiode in photodetector assembly
Mark, is defined as the ratio between output signal and input optical power of photodetector.Responsiveness is divided into voltage responsive degree, current-responsive
Degree, the index for characterizing responsiveness is proportionality coefficient.The voltage responsive degree of photodetector 7 to be detected is defined asElectric current
Responsiveness is defined asP is input optical power, VsFor output voltage, IsFor output current, this index is to reflect light
The sensitivity of electric explorer, and reflect the part of properties of amplifying circuit.Responsiveness (or sensitivity) describes photoelectricity spy
Survey the photoelectric conversion efficiency of device.
(3) driving current control module 8 is controlled using computer 5 so that the output signal of photodetector 3 to be detected
Signal-to-noise ratio is 1:1, the output power of acquisition measuring light power module 4 calculates noise equivalent power.
The noise equivalent power of photodetector is the parameter for the detectivity for describing photodetector.Noise equivalent power
(NEP) it is defined asIt is unit signal-to-noise ratio (signal-to-noise ratio 1:1) when, the light work(of the signal of photodetector
Rate.
(4) driving current control module 8 is controlled using computer 5 so that the output current of driving current control module 8 increases
Greatly, acquisition noise voltage, saturation voltage calculate the dynamic range of photodetector 3 to be detected；
It is measured during the measurement of the dynamic range of photodetector by multiple points, under normal circumstances, detector has one
A no photovoltage and saturation voltage.By adjusting the size of SLD luminous powers, when closing SLD light sources, the voltage tested is
Photodetector without photovoltage, during increase SLD light source driving instrument driving current controls, photodetector is when deviateing linear value
Saturation voltage.In signal system theory, it is defined as the difference of maximum undistorted level and noise level.In photodetector,
Refer to detecting the variation range of optical signal without distortion.
(5) using computer 5 in [T1,T2] within the temperature range of using Δ T as variable quantity adjust temperature control modules 6 temperature
Degree, the value range of Δ T is 0.1 °≤Δ T≤5 °, and photodetection to be detected under each temperature spot is calculated according to step (1)-(4)
The noise voltage of device 3, zero-bit level, zero drift, responsiveness, noise equivalent power, dynamic range.
The temperature of high-low temperature test chamber is adjusted, photodetector 3 to be detected under each temperature spot can be measured
Noise voltage, zero-bit level, zero drift, responsiveness, noise equivalent power, dynamic range.It is possible thereby to by each temperature
The parameters such as the responsiveness of photodetector 7 to be detected are compared, variable quantity of the degree of meeting with a response when parameters are in different temperatures.
By analyzing the performance parameters of photodetector at various temperatures, it helps to the optical fiber top being under condition of different temperatures
The performance evaluation of photodetector in spiral shell.
It realizes automatic collection, acquisition instructions need to be sent out automatically by writing program and acquire optical power value, and by performance number
It is automatically stored in text file.Experiments verify that during detection photodetector, automatic detection can be realized using the present invention,
Verification worker, which can leave, does other work, improves work efficiency.
The embodiment of the present invention is described in detail above, but the content is only presently preferred embodiments of the present invention,
It should not be construed as limiting the practical range of the present invention.All changes and improvements made in accordance with the scope of the present invention, should all
It still belongs within this patent covering scope.
Claims (8)
1. a kind of photodetector detection device, it is characterised in that：Including light source driver module (1), light source module (2), data
Acquisition module (3), measuring light power module (4), computer (5), temperature control modules (6), photodetector to be detected (7),
Driving current control module (8), coupler (9)；The photodetector to be detected (7), data acquisition module (3), computer
(5), driving current control module (8), light source driver module (1), light source module (2), coupler (9) are sequentially connected；The coupling
One end output of clutch (9) is connect with photodetector to be detected (7), the other end output of coupler (9) and measuring light power
Module (4) connects；The temperature control modules (6), measuring light power module (4) are connect with computer (5)；It is described to be detected
Photodetector (7) is set in temperature control modules (6).
2. photodetector detection device according to claim 1, it is characterised in that：It further includes and is set to measuring light power
The first cable between module (4) and computer (5), the measuring light power module (4) are provided with gpib interface, and luminous power is surveyed
Amount module (4) is connect by first cable with computer (5).
3. photodetector detection device according to claim 1, it is characterised in that：It further includes and is set to temperature control mould
The second cable between block (6) and computer (5), the temperature control modules (6) are provided with gpib interface, the temperature control
Module (6) is connect by second cable with computer (5).
4. photodetector detection device according to claim 1, it is characterised in that：The data acquisition module (3) sets
Communication interface is equipped with, data acquisition module (3) is connect by the communication interface with computer (5).
5. the photodetector detection device according to any one of claim 1-4, it is characterised in that：The data acquisition
Module (3) is microcontroller or DSP.
6. the photodetector detection device according to any one of claim 1-4, it is characterised in that：The light source module
(2) it is SLD light source modules.
7. the photodetector detection device according to any one of claim 1-4, it is characterised in that：Light source module (2)
It is additionally provided with radiating bottom plate below.
8. a kind of photodetector detection method, it is characterised in that：The photodetector detection method utilizes claim 1-7
Any one of described in photodetector detection device realize, the light source driver module (1) for light source module (2) carry out
Driving；The driving current control module (8) for for light source driver module (1) provide driving current；The measuring light power
Module (4) is for measuring the light source power of light source module (2)；The temperature control modules (6) are for controlling photoelectricity to be detected to visit
The temperature value of environment where surveying device (7)；The data acquisition module (3) is for the fixed cycle N acquisitions photoelectricity to be detected
The output of detector (7)；Ranging from 0.001s≤N≤5s of the period N；The computer (5) acquires for gathered data
The output of module (3), measuring light power module (4), and to driving current control module (8), temperature control modules (6), light work(
Rate measurement module (4) is controlled；The photodetector detection method includes the following steps：
(1) light source driver module (1) is closed, using the output signal of computer (5) gathered data acquisition module (3), calculating is treated
Detect the noise voltage, zero-bit level, zero drift of photodetector (3)；
(2) light source driver module (1) is opened, output signal, the luminous power of data acquisition module (3) are surveyed using computer (5)
The output signal of amount module (4) is acquired, and calculates the responsiveness of photodetector to be detected (3)；
(3) computer (5) control driving current control module (8) is utilized so that the output signal of photodetector (3) to be detected
Signal-to-noise ratio be 1:1, the output power of acquisition measuring light power module (4) calculates noise of photodetector to be detected (3) etc.
Imitate power；
(4) computer (5) control driving current control module (8) is utilized so that the output current of driving current control module (8)
Increase acquires noise voltage, the saturation voltage of photodetector to be detected (3), calculates the dynamic of photodetector to be detected (3)
Range；
(5) using computer (5) in [T1,T2] within the temperature range of using Δ T as variable quantity adjust temperature control modules (6) temperature
Degree, the value range of Δ T is 0.1 °≤Δ T≤5 °, and photoelectricity to be detected under each temperature spot is calculated according to above-mentioned steps (1)-(4)
The noise voltage of detector (3), zero-bit level, zero drift, responsiveness, noise equivalent power, dynamic range.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109194411A (en) * | 2018-09-27 | 2019-01-11 | 武汉光迅科技股份有限公司 | A kind of device and method measuring silicon light coherent receiver Photoresponse |
| CN111220858A (en) * | 2018-11-26 | 2020-06-02 | 北京华航无线电测量研究所 | Quantum Bell state detector noise equivalent power measurement method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109194411A (en) * | 2018-09-27 | 2019-01-11 | 武汉光迅科技股份有限公司 | A kind of device and method measuring silicon light coherent receiver Photoresponse |
| CN111220858A (en) * | 2018-11-26 | 2020-06-02 | 北京华航无线电测量研究所 | Quantum Bell state detector noise equivalent power measurement method |
| CN111220858B (en) * | 2018-11-26 | 2022-04-12 | 北京华航无线电测量研究所 | Quantum Bell state detector noise equivalent power measurement method |
| CN114112314A (en) * | 2021-12-21 | 2022-03-01 | 天津大学 | Detection performance test method for multifunctional photoelectric detection system |
| CN116800340A (en) * | 2023-08-21 | 2023-09-22 | 深圳市知用电子有限公司 | Signal transmission system |
| CN116800340B (en) * | 2023-08-21 | 2023-11-03 | 深圳市知用电子有限公司 | Signal transmission system |
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