A method of optical power calibration based on the principle of spatial linear superposition

A technology of linear superposition and calibration method, applied in photovoltaic power generation, electrical components, electromagnetic wave transmission systems, etc., which can solve the problems of inconvenience to carry out, traceability of low optical power, and large size of calibration devices.

Active Publication Date: 2022-05-17
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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  • A method of optical power calibration based on the principle of spatial linear superposition

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Embodiment Construction

[0040] Such as 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 source 1 is 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, diaphragm.

[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 the principle of spatial linear superposition. The purpose is to realize the traceability of the low value of optical power, and at the same time solve the problem that the existing calibration device is bulky and inconvenient to carry out. In the present invention, the measured value of the calibrated optical power meter value is attenuated at 1 / 5 and 1 / 10 times, and the calibration points meet the conventional point selection requirements of five points at 20% intervals and 10 points at 10% intervals. . Because the calibration process from high to low optical power value reduces the resolution of the calibration result, improves the resolution of the calibration result, and reduces the measurement uncertainty of the calibration result. The used calibration device has relatively few internal components, small size, full automation, and no need for a large optical track, so it is easy to operate, low in cost, easy to carry, and can realize on-site calibration.

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 Patents(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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