Cascade refractive index sensor based on layered stacking structure coated with anti-reflection coating

Abstract

The invention discloses a cascade refractive index sensor based on a layered stacking structure coated with an anti-reflection coating. The cascade refractive index sensor comprises a signal transmitter, a magnetic field generator, an angle control rotating table, a coupler, the layered stacking structure, a micro motor, a spectrum analyzer and a carrying platform, wherein the signal transmitter, the magnetic field generator, the angle control rotating table, the coupler and the spectrum analyzer are electrically connected with the micro motor; the angle control rotating table is further connected with the layered stacking structure; the coupler is also connected with the layered stacking structure and the spectrum analyzer; the layered stacking structure comprises a main body structure and an anti-reflection coating; the main body structure comprises a medium A1 and an InSb1 medium which are arranged in sequence; and the anti-reflection coating comprises a medium InSb2, a medium A1 and a medium A2 which are arranged in sequence. Cascade measurement of different refractive index ranges can be realized by regulating and controlling the magnetic field intensity. The sensor has the characteristics of novel design, large measurement range, high sensitivity, cascade functions and the like.

Description

technical field [0001] The invention relates to the technical field of sensing and measurement, in particular to a cascaded refractive index sensor based on a layered stack structure coated with an anti-reflection coating. Background technique [0002] The detection system with the sensor as the core is like the nerves and the senses, continuously providing human beings with various information of the macro and micro worlds, and becoming a useful tool for people to understand and transform nature. Sensors are extensions of human facial features, also known as electrical facial features. Sensors are the main way and means to obtain information. Without sensors, modern production would lose its foundation. Sensors are pioneers in the development of fringe disciplines. Sensors have penetrated into many fields such as industrial production, space development, ocean exploration, environmental protection, resource investigation, medical diagnosis, etc. [0003] Since the preci...

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Problems solved by technology

[0005] It can be seen that the existing technology has studied the improvement of the measurement accuracy and resolution of the refractive index sensor, but it has not provided a refractive index sensor that can improve the measurement accuracy and expand the measurement range based on the principle of angle modulation.

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