Optical power detection device of portable split-ring resonator loaded patch photoresistor

A split resonant ring and optical power detection technology, which is applied in measurement circuits and photometry using electric radiation detectors, can solve the problems of dark current limitation, small detection amplitude range, and low resolution, and improve detection sensitivity , reduce dark current, light weight effect
CN111735537AActive Publication Date: 2020-10-02UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF ELECTRONICS SCI & TECH OF CHINA
Publication Date
2020-10-02

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Abstract

The invention belongs to the field of optical power detection, and especially relates to an optical power detection device of portable split-ring resonator loaded patch photoresistor. The device comprises a microwave resonance structure, a scalar network analyzer and a single-chip microcomputer module, the microwave resonance structure adopts a split-ring resonator circuit, and the patch photoresistor is loaded at an opening of the split-ring resonator circuit; when illumination irradiated on the patch photoresistor is changed, the resonance peak value of the split-ring resonator circuit is changed, the resonance peak value is detected through the scalar network analyzer, then the resonance peak value offset detection is realized through the single-chip microcomputer module, and thus the optical power detection is realized. According to the optical power detection device, the photosensitive characteristic and the microwave resonance characteristic of a semiconductor material are perfectly combined, and the detection sensitivity of optical (infrared) weak signals is improved by several orders of magnitudes; and meanwhile, the device has the advantages of being small in structure, light in weight, low in cost, free of environmental interference, convenient to carry and the like.
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Description

technical field

[0001] The invention belongs to the field of optical power detection, and specifically provides an optical power detection device with a portable split resonant ring loaded with a patch photoresistor. Background technique

[0002] With the rapid development of optical fiber network technology and optical communication technology, the requirements for optical power detection are getting higher and higher. Changes in optical power can easily lead to communication and network failures. In the field of optical communication, in order to ensure the continuity, stability and safety of the work between devices, all optical devices are usually tested.

[0003] The current optical (infrared) power detection method is mainly based on AD conversion, and the voltage signal of the measured photosensitive device (APD (avalanche photo detector, avalanche photodiode or PIN tube) under the light irradiation signal is amplified and sampled through the amplifier. , to realize ...

Claims

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