An integrated optical waveguide power sensor chip and its constructed measurement system
A technology for integrating optical waveguides and sensor chips, applied in the field of measurement systems, can solve problems such as reducing measurement stability and accuracy, increasing the complexity and volume of the measurement system structure, and achieving improved integration, stability, and anti-interference capabilities Strong, good insulation performance
Active Publication Date: 2021-04-23
KUNMING UNIV OF SCI & TECH
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Problems solved by technology
However, the use of discrete optical components will undoubtedly increase the complexity and volume of the measurement system structure, while reducing the stability and accuracy of the measurement
Method used
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Embodiment 1
[0027] Embodiment 1: as figure 1 As shown, an integrated optical waveguide power sensor chip, including:
[0028] Lithium niobate wafer 1, used as a substrate for integrated optical waveguide power sensor chips;
[0029] The Y-branch optical waveguide 2 is used to divide the input optical signal into two parts, and respectively input the first integrated optical waveguide Mach-Zehnder interferometer 3 and the second integrated optical waveguide Mach-Zehnder interferometer 4 connected thereto;
[0030] The first integrated optical waveguide Mach-Zehnder interferometer 3 is used to form a voltage sensing unit together with the strip electrode 5;
[0031] The second integrated optical waveguide Mach-Zehnder interferometer 4 is used to form a current sensing unit together with the segmented electrode 6 and the loop antenna 7;
[0032] The strip electrode 5 is used to access the measured voltage signal and generate an induced voltage between the electrodes, so as to modulate the ...
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The invention discloses an integrated optical waveguide power sensor chip and a measurement system constructed thereof. The chip includes a lithium niobate wafer as a substrate; a Y branch optical waveguide is used to divide an input optical signal into two parts; One integrated optical waveguide MZI is used to form a voltage sensing unit with strip electrodes; the second integrated optical waveguide MZI is used to form a current sensing unit with segmented electrodes and loop antennas; strip electrodes are used to connect to the measured voltage signal, and generate an induced voltage between the electrodes, thereby producing a modulation effect on the light wave transmitted in the first integrated optical waveguide MZI; the loop antenna is used to receive the magnetic field around the measured current, and generate an induced current on the loop antenna; The segment electrode is used to convert the induced current generated on the loop antenna into an induced voltage, so as to produce a modulation effect on the light wave transmitted in the second integrated optical waveguide MZI. The invention has the advantages of high integration, low complexity, high stability, strong anti-interference ability, good insulation performance and the like.
Description
technical field [0001] The invention relates to an integrated optical waveguide power sensor chip and a measurement system constructed thereof, belonging to the technical field of electric power measurement. Background technique [0002] With the rapid development of modern technology, more and more scientific and industrial fields need to measure electric power quickly and accurately, and the technical requirements for electric power measurement are also getting higher and higher. Traditional electric power measurement technology is mainly based on electronic voltage and current transformers, but with the continuous increase of voltage level, electric and electronic electric power measurement technology has more advantages in electrical insulation, anti-electromagnetic interference, frequency response, system volume and complexity. etc. have shown considerable limitations. For this reason, the current research on electric power measurement mainly focuses on the optoelectro...
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IPC IPC(8): G01R21/06
Inventor 张家洪李佳文赵振刚李英娜李川
Owner KUNMING UNIV OF SCI & TECH