CN117516875A - Optical power and spectrum automatic acquisition, analysis and test method for fiber laser - Google Patents
Optical power and spectrum automatic acquisition, analysis and test method for fiber laser Download PDFInfo
- Publication number
- CN117516875A CN117516875A CN202311352183.9A CN202311352183A CN117516875A CN 117516875 A CN117516875 A CN 117516875A CN 202311352183 A CN202311352183 A CN 202311352183A CN 117516875 A CN117516875 A CN 117516875A
- Authority
- CN
- China
- Prior art keywords
- spectrum
- power
- laser
- analysis
- test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001228 spectrum Methods 0.000 title claims abstract description 51
- 238000004458 analytical method Methods 0.000 title claims abstract description 24
- 230000003287 optical effect Effects 0.000 title claims abstract description 23
- 238000010998 test method Methods 0.000 title claims abstract description 16
- 239000000835 fiber Substances 0.000 title claims description 10
- 238000012360 testing method Methods 0.000 claims abstract description 57
- 239000013307 optical fiber Substances 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims abstract description 4
- 238000004364 calculation method Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 abstract description 2
- 238000005070 sampling Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0207—Details of measuring devices
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
The invention provides an optical power and spectrum automatic acquisition analysis test method for an optical fiber laser, which can realize automatic test and analysis of optical power and spectrum output by the optical fiber laser at different frequencies so as to achieve the purposes of reducing cost, enhancing efficiency and improving test and analysis efficiency of products; comprising the following steps: s1, initializing a testing device to detect and configure parameters, wherein the testing device comprises a laser, a power meter and a spectrometer, and then controlling the laser to enable light emission; s2, respectively acquiring readings of a power meter and spectrum data of a spectrometer, then carrying out compensation processing on the power according to a certain coefficient, analyzing and calculating spectrum duty ratio on the acquired spectrum data, respectively judging whether the power and the spectrum duty ratio accord with expectations or not, if not, stopping the test, and if so, carrying out step S3; and S3, polling to traverse all the frequency test points, judging whether polling is finished, if so, storing data according with expected parameters, and otherwise, returning to the step S1.
Description
Technical Field
The invention relates to the technical field of fiber lasers, in particular to an optical power and spectrum automatic acquisition, analysis and test method for a fiber laser.
Background
The optical power and the spectrum are used as core parameter indexes of the fiber laser, are important bases for judging the quality of laser output by the fiber laser, and are important preconditions for meeting the actual application needs of customers.
The fiber laser comprises a large number of sensitive optical elements, has strong professionals, needs to collect a large amount of test data and perform calculation analysis, and currently uses the traditional manual test and calculation means.
The traditional optical power testing method comprises the following steps: selecting partial frequency division values as test points according to a certain rule from the working frequency range supported by the laser (the more the test points are, the more accurate the test result is), then setting the output frequency of the laser to be the frequency of a certain test point (generally from low to high) and related parameters through manual operation, observing the readings of the power meter through naked eyes and manually recording, polling to traverse all the frequency test points, and recording the readings of the power meter;
traditional spectrum testing and analysis methods: the selection and setting of frequency values are the same as the optical power, an optical path is connected to a spectrometer, parameters such as sampling points, acquisition bandwidth, energy intensity and the like of the spectrometer are preset, output frequency and related parameters of a laser are set, then spectra are observed through naked eyes, the spectrometer is adjusted to be set to an ideal analysis waveform, finally sampling data and spectrum copies are exported to a computer (a group of sampling data is 5001 points or higher) by means of a USB flash disk, all frequency test points are polled, data are exported to the computer, and finally secondary analysis is carried out on all test data to calculate spectrum occupation ratio.
The traditional optical power and spectrum testing method has high requirements on testing engineers, complex testing process, high risk of errors in data acquisition and calculation, limited frequency test points, low testing efficiency, and easy end face pollution of the laser caused by frequent manual intervention, and serious element damage and even product rejection.
Disclosure of Invention
Aiming at the problems, the invention provides an optical power and spectrum automatic acquisition analysis test method for an optical fiber laser, which can realize automatic test and analysis of the optical power and spectrum output by the optical fiber laser at different frequencies so as to achieve the purposes of reducing cost, enhancing efficiency and improving the test and analysis efficiency of products.
The invention adopts the following technical scheme that the optical power and spectrum automatic acquisition, analysis and test method for the fiber laser is characterized in that: the method comprises the following steps:
s1, initializing a testing device to detect and configure parameters, wherein the testing device comprises a laser, a power meter and a spectrometer, and then controlling the laser to enable light emission;
s2, respectively acquiring readings of a power meter and spectrum data of a spectrometer, then carrying out compensation processing on the power according to a certain coefficient, analyzing and calculating spectrum duty ratio on the acquired spectrum data, respectively judging whether the power and the spectrum duty ratio accord with expectations or not, if not, stopping the test, and if so, carrying out step S3;
and S3, polling to traverse all the frequency test points, judging whether polling is finished, if so, storing data according with expected parameters, and otherwise, returning to the step S1.
Further, the output light of the laser is divided into two beams according to the proportion of 5:995, and the two beams are respectively provided for the spectrometer and the power meter;
further, the testing device further comprises a light splitter, the power meter and the light spectrometer are connected with the light splitter, the power meter and the light spectrometer are connected with a computer terminal, the light splitter is connected with the laser, and the laser is connected with the computer terminal through a communication port;
further, the methodThe spectral duty ratio calculation formula is: ratio= (P) band ÷P total )×100％；
Wherein P is total Is the sum of the powers in the spectrum acquisition range;
P band to set the sum of the powers in the wavelength range.
The invention has the advantages that by adopting an automatic acquisition analysis test method, the power and spectrum test efficiency of the laser can be greatly improved, and the situations of data recording and calculation errors are avoided; the number of the frequency test points can be flexibly increased, and the accuracy of test data can be greatly improved; meanwhile, the testing environment and the testing flow are standardized, and the pollution and the damage of manual intervention to the laser are reduced; the repeated labor of engineers is lightened, the engineers are assisted to have more efforts to concentrate on improving the functional performance and market competitiveness of the product, and positive effects can be generated on research, debugging, testing, verification and mass production of the product.
Drawings
FIG. 1 is a schematic diagram of a test apparatus according to the present invention;
fig. 2 is a flow chart of the present invention.
Detailed Description
As shown in fig. 1 and 2, the optical power and spectrum automatic acquisition, analysis and test method for the fiber laser comprises the following steps:
s1, the testing device comprises a laser, a power meter and a spectrometer, and the laser, the power meter and the spectrometer are subjected to initialization detection, wherein the initialization detection comprises the steps of writing basic parameters of the laser, whether the configuration of parameters such as wavelength, bias parameters and measuring range of the power meter is correct, and whether the configuration of parameters such as center wavelength, spectrum detection range and resolution of the spectrometer is correct;
s2, polling and setting laser parameters: polling laser test parameters, configuring parameters such as pulse width, frequency, power setting value and the like of a laser, controlling the laser to enable light emission, dividing output light of the laser into two beams according to a ratio of 5:995, and respectively providing the two beams for a spectrometer and a power meter;
s3, acquiring a power meter reading by the computer terminal, performing compensation processing on the power according to a certain coefficient, judging whether the power of the frequency test point to be tested accords with the expectation or not, if not, stopping the test, and if so, performing step S4;
the power is compensated according to a certain coefficient, and it is to be noted that the measured value of a general power meter and the true value have a fixed numerical value difference relation, when the true power is wanted to be obtained, the measured value of the power is required to be added or subtracted by a certain value, in the invention, the compensation can be realized by adding or subtracting the acquired power value by a set value, and the specific coefficient value can be set according to the situation;
meanwhile, the computer terminal collects spectrum data of the spectrometer, analyzes and calculates spectrum duty ratio of the collected spectrum data, then judges whether the spectrum duty ratio of the frequency test point to be tested accords with the expectation or not, if not, the test is stopped, and if so, the step S4 is carried out;
the calculation formula of the spectrum ratio is: ratio= (P) band ÷P total )×100％；
Wherein P is total Is the sum of the powers in the spectrum acquisition range;
P band to set the sum of the powers in the wavelength range;
specifically, since there are two sets of data in the spectrometer data, one set is wavelength λ (abscissa), and the other set is power magnitude P (ordinate) corresponding to wavelength λ;
the central wavelength lambda of the spectrometer is consistent with the tested laser wavelength, the scanning range is set to be 200nm, the sampling interval is 0.02nm, 10000 groups of data (power-wavelength) are generated after the scanning of the spectrometer is finished, so that the total power within 200nm is lambda 1 +λ 2 +...λ 10000 ＝P total ，
The sum of the powers within a certain wavelength range is selected within 200nm and is recorded as P band ；
The spectral duty ratio calculation formula within a certain wavelength is ratio= (P) band ÷P total )×100％；
S4, polling all frequency test points in the working frequency of the laser light emission, judging whether the polling is finished, if so, storing data according with expected parameters, outputting a report of laser power and spectrum analysis, and if not, returning to the step S2.
The testing device further comprises a light splitter, the power meter and the spectrometer are connected with the light splitter, the power meter and the spectrometer are connected to the computer terminal, the light splitter is connected with a laser, and the laser is connected with the computer terminal through a communication port.
Wherein, the computer terminal can realize:
1. parameter setting and state monitoring (including laser switch, power reading, trigger frequency, etc.) are carried out on the laser through the control card;
2. setting parameters of a power meter and recording laser power readings;
3. setting parameters of a spectrometer and recording spectrum data of a laser;
4. collecting test data, and calculating and analyzing the spectrum duty ratio;
5. a test report is generated.
The control card is used for receiving the instruction of the computer terminal, controlling the power on and off of the laser, and performing parameter setting and state monitoring (including laser switch, power reading, frequency and the like) on the laser;
and (3) a power meter: the pyroelectric laser power detector is used for realizing the functions of data acquisition and the like of the optical power of a laser;
spectrum tester: an instrument for detecting and analyzing the light-emitting spectrum of a laser is used for realizing the acquisition function of spectrum original data.
According to the invention, by adopting an automatic acquisition analysis test method, the power and spectrum test efficiency of the laser can be greatly improved, and the situations of data recording and calculation errors are avoided; the number of the frequency test points can be flexibly increased, and the accuracy of test data can be greatly improved; meanwhile, the testing environment and the testing flow are standardized, and the pollution and the damage of manual intervention to the laser are reduced; the repeated labor of engineers is lightened, the engineers are assisted to have more efforts to concentrate on improving the functional performance and market competitiveness of the product, and positive effects can be generated on research, debugging, testing, verification and mass production of the product.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (4)
1. The optical power and spectrum automatic acquisition, analysis and test method for the fiber laser is characterized in that: the method comprises the following steps:
s1, initializing a testing device to detect and configure parameters, wherein the testing device comprises a laser, a power meter and a spectrometer, and then controlling the laser to enable light emission;
s2, respectively acquiring the readings of the power meter and the spectrum data of the spectrometer, then carrying out compensation processing on the power, analyzing and calculating the spectrum duty ratio on the acquired spectrum data, respectively judging whether the power and the spectrum duty ratio accord with expectations or not, if not, stopping the test, and if so, carrying out step S3;
and S3, polling to traverse all the frequency test points, judging whether polling is finished, if so, storing data according with expected parameters, and otherwise, returning to the step S1.
2. The optical power and spectrum automatic acquisition, analysis and test method for an optical fiber laser according to claim 1, wherein the optical power and spectrum automatic acquisition, analysis and test method is characterized in that: the output light of the laser is divided into two beams according to the proportion of 5:995, and the two beams are respectively provided for the spectrometer and the power meter.
3. The optical power and spectrum automatic acquisition, analysis and test method for an optical fiber laser according to claim 1, wherein the optical power and spectrum automatic acquisition, analysis and test method is characterized in that: the testing device further comprises a light splitter, the power meter and the light spectrometer are connected with the light splitter, the power meter and the light spectrometer are connected to a computer terminal, the light splitter is connected with the laser, and the laser is connected with the computer terminal through a communication port.
4. The optical power and spectrum automatic acquisition, analysis and test method for an optical fiber laser according to claim 1, wherein the optical power and spectrum automatic acquisition, analysis and test method is characterized in that: the spectrum duty ratio calculation formula is: ratio= (P) band ÷P total )×100％；
Wherein P is total Is the sum of the powers in the spectrum acquisition range;
P band to set the sum of the powers in the wavelength range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311352183.9A CN117516875A (en) | 2023-10-18 | 2023-10-18 | Optical power and spectrum automatic acquisition, analysis and test method for fiber laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311352183.9A CN117516875A (en) | 2023-10-18 | 2023-10-18 | Optical power and spectrum automatic acquisition, analysis and test method for fiber laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117516875A true CN117516875A (en) | 2024-02-06 |
Family
ID=89763397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311352183.9A Pending CN117516875A (en) | 2023-10-18 | 2023-10-18 | Optical power and spectrum automatic acquisition, analysis and test method for fiber laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117516875A (en) |
-
2023
- 2023-10-18 CN CN202311352183.9A patent/CN117516875A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111092652B (en) | Performance detection system and test method of optical device | |
| JP2014513805A (en) | Spectroscopic apparatus and spectroscopy for determining the components present in a sample | |
| CN109211524A (en) | Parameter integrated synchronous testing device for high-power optical fiber laser | |
| CN104344890A (en) | Weak light signal spectrum fast test device and method | |
| CN103852164B (en) | A kind of method obtaining light source light spectrum | |
| CN105021546A (en) | Method for measuring chemical elements by whole-spectrum direct-reading spectrometer | |
| CN101813519B (en) | Stray light correction method of spectrograph | |
| CN110864882B (en) | Multispectral ultraviolet light sensitivity detection system and method | |
| CN117516875A (en) | Optical power and spectrum automatic acquisition, analysis and test method for fiber laser | |
| CN116067625A (en) | System and method for testing long-time wavelength stability of built-in light source of spectrometer | |
| Carvalho et al. | Optical yarn hairiness measurement system | |
| CN117330882A (en) | Automatic test method and system for filter | |
| CN110071759B (en) | Optical cable fault positioning device and method based on polarized white light interference | |
| CN116878660A (en) | Chromaticity measuring device and method | |
| CN104101431A (en) | Method and system for calibrating linear array sensor of full-spectrum direct-reading type spectrograph | |
| CN102494877A (en) | Method for demodulating extinction ratio test data of polarizing device by white light interference method | |
| JPH04157350A (en) | Fluorescent measurement apparatus | |
| CN111504497B (en) | Temperature measurement method based on fluorescent optical fiber | |
| CN113238134A (en) | Screening test system and method of SLD light source assembly for optical fiber current sensor | |
| CN103954594B (en) | The peak value conversion method of three-dimensional spectroscopic data under different photomultiplier transit tube voltages | |
| CN202471389U (en) | Ring laser gain curve test system | |
| JP7559441B2 (en) | Spectroscopic equipment | |
| CN113776665B (en) | Device and method for testing detection efficiency of single photon detector in communication band | |
| CN118169110B (en) | Spectral analysis method, sample component analysis method and device, equipment and medium | |
| CN109990822B (en) | Frequency response calibration device and method for photoelectric detection module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |