Optical power calibration method based on spatial linear superposition principle

A technology of linear superposition and calibration method, applied in photovoltaic power generation, electromagnetic wave transmission system, electrical components, etc., can solve the problems of inconvenient to carry out, traceability of low optical power value, large volume of calibration device, etc.

Active Publication Date: 2021-11-02
CHINA ELECTRONICS STANDARDIZATION INST
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide an optical power calibration method based on the principle of spatial linear superposition, which realizes the traceability of the low value of optical power, and at the same time solves the problem that the existing calibration device is bulky and inconvenient to carry out

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  • Optical power calibration method based on spatial linear superposition principle

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Embodiment Construction

[0040] like figure 1 As shown, the optical power calibration method of the present invention is based on the principle of spatial linear superposition. In the figure, the LED light sources 1 are A1 light source, A2 light source, A3 light source, A4 light source, A5 light source, and B light source in a clockwise direction.

[0041] The present invention includes six sets of LED light sources 1 (hereinafter referred to as A1 light source, A2 light source, A3 light source, A4 light source, A5 light source, B light source) with a certain light divergence angle of the same model and supporting program-controlled power source 2, photodiode light power Probe 3, and supporting photocurrent acquisition module 4, standard optical power meter and supporting probe 5, aperture 6.

[0042] Among them, the LED light source 1 and the programmable power source 2 form the light source module of the calibration device, the photodiode optical power probe 3 and the supporting photocurrent acquisi...

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Abstract

The invention relates to an optical power calibration method based on a spatial linear superposition principle. The utility model aims to realize low-value traceability of optical power and solve the problem that the existing calibration device is large in size and inconvenient to carry when going out at the same time. In the invention, the measured value of the calibrated optical power meter is attenuated according to 1 / 5 and 1 / 10 multiplying power, and the calibration points meet the calibration requirements of the conventional point selection requirement that five points are arranged at intervals of 20% and 10 points are arranged at intervals of 10%. Due to the fact that the optical power values are calibrated from high to low, the resolution ratio of the calibration result is reduced, the resolution ratio of the calibration result is improved, and the measurement uncertainty of the calibration result is reduced. The adopted calibration device has the advantages of less internal composition equipment, small volume, full automation and no need of a large light rail, so that the operation is simple, the cost is low, the carrying is convenient, and the field calibration can be realized.

Description

technical field [0001] The invention relates to an optical power calibration method, in particular to an optical power calibration method based on the principle of spatial linear superposition. It belongs to the field of photoelectric metering technology. Background technique [0002] The traceability of optical power meters for communication is based on the regulations "JJG 965-2013 Verification Regulations for Optical Power Meters for Communications" and "JJG813-2013 Verification Regulations for Optical Fiber Power Meters", and the laser source is used as the standard light source for verification and calibration. Although the scope of application is stipulated in the regulations: the power measurement range is as low as -80dBm, but the lowest value of the technical indicators in the measurement standard and main equipment is 0dBm. In the verification and calibration process, the linearity of the optical power meter is assumed to be very good by default, and the traceabil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/079H04B10/077
CPCH04B10/07955H04B10/0775Y02E10/50
Inventor 阚劲松徐迎春刘冲张珊何丽娇
Owner CHINA ELECTRONICS STANDARDIZATION INST
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