Frequency response calibration device and method for photoelectric detection module
A photoelectric detection and frequency response technology, applied in geophysical measurement, instruments, etc., can solve the problems of reducing the measurement accuracy of instruments, affecting the calibration efficiency, and failing to meet the needs of fast and accurate calibration of light wave component analyzers, so as to improve measurement accuracy, The effect of improving calibration efficiency
Active Publication Date: 2019-07-09
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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[0004] The inventors found that in engineering, the method of calibration in different dimensions or linear interpolation calculation is generally adopted. On the one hand, a large number of calibrations affects the calibration efficiency. On the other hand, due to the nonlinear characteristics of the photoelectric detection module, linear The interpolation method reduces the measurement accuracy of the instrument and cannot meet the needs of fast and accurate calibration of light wave component analyzers
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[0024] The present disclosure will be further described below in conjunction with the accompanying drawings and embodiments.
[0025] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
[0026] It should be noted that the terminology used herein is only for describing specific embodiments, and is not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.
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The invention provides a frequency response calibration device and method for a photoelectric detection module. The frequency response calibration device for the photoelectric detection module comprises a voltage detection module, a tunable light source and an adjustable voltage stabilization source, wherein the voltage detection module is used for measuring the output voltage of the photoelectricdetection module; the tunable light source is used for outputting light in different wavelength ranges to the photoelectric detection module; the adjustable voltage stabilization source is used for outputting the bias voltage of the photoelectric detection module; under a specific wavelength [Lambda] and specific bias voltage V0, the output voltage U0 of the photoelectric detection module is recorded, and the frequency response Sf of the photoelectric detection module along with modulation frequency is measured; the tunable light source and the adjustable voltage stabilization source are independently regulated, the output voltage U [Lambda] of the photoelectric detection module under the specific bias voltage V0 and different light wavelengths can be recorded, and the output voltage UV of the photoelectric detection module under specific wavelength [Lambda]0 and different bias voltages also can be recorded; through the U [Lambda] and the U0, a quotient is solved, and a wavelength responsivity calibration factor is obtained; and through UV and U0, the quotient is solved, and a bias voltage calibration factor is obtained so as to obtain frequency response parameters under differentlight wavelengths, different bias voltages and different modulation frequencies.
Description
technical field [0001] The disclosure belongs to the field of photoelectric detection, and in particular relates to a frequency response calibration device and method for a photoelectric detection module. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] As a key module in the light wave component analyzer, the photoelectric detection module can convert the modulated optical signal into a radio frequency signal, and then measure the frequency response characteristics of the DUT. Since the photodetection module is part of the test chain, it is necessary to remove the influence of the photodetection module when calculating the S parameters of the optical device under test. The influence of the photodetection module can be characterized by its frequency response parameters. However, the influence of the photodetection module is different unde...
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IPC IPC(8): G01D18/00G01V13/00
CPCG01D18/00G01V13/00
Inventor 鞠军委张爱国金辉徐桂城刘加庆曲天阳韩顺利张志辉闫继送
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP