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A Dynamically Tunable Temperature Sensor

A temperature sensor and sensor technology, applied in thermometers, thermometers with physical/chemical changes, instruments, etc., can solve problems that are not conducive to practical applications and complex structures, and achieve measurement sensitivity, dynamic tuning, and sensitive wavelength response. Effect

Inactive Publication Date: 2017-08-11
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sensor is designed based on an optical structure with multiple coupling defect layers, so the structure is complex, which is not conducive to practical application

Method used

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  • A Dynamically Tunable Temperature Sensor
  • A Dynamically Tunable Temperature Sensor
  • A Dynamically Tunable Temperature Sensor

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Experimental program
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Embodiment Construction

[0020] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, a dynamically tunable temperature sensor includes three kinds of optical media A, B and D, the input beam is vertically incident on the optical medium layer, and the optical media A and B with periodic alternating structures are sequentially arranged along the direction of the input beam. The optical medium D and the optical medium B and A of the periodic alternating structure are symmetrical about the central optical medium D, and the period numbers of the periodic alternating structures on the left and right sides of the central optical medium D are equal; the optical medium D is non- Linear Kerr medium; the optical mediums A and B are temperature-sensitive optical film mediums with different refractive indices. The optical thicknesses of the optical media A and B are equal.

[0022] In this embodiment, ...

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Abstract

The invention relates to a dynamically tunable temperature sensor, which includes three optical media A, B and D, and along the advancing direction of the input light beam, there are optical media A and B with periodic alternating structures, optical medium D and periodic alternating structures. The optical media B and A are symmetrical about the central optical medium D, and the period numbers of the periodic alternating structures on the left and right sides of the central optical medium D are equal; the optical medium D is a nonlinear Kerr medium; the Optical media A and B are temperature-sensitive optical film media with different refractive indices. The temperature of the external environment is detected by detecting the change of the reflectivity of the system, and the temperature detection within the temperature range to be measured is realized. The temperature sensor of the present invention has the advantages of simple structure, low production cost, and tunable sensing characteristics. It can not only realize temperature measurement in a wide range, but also realize high-sensitivity and high-precision temperature measurement near a specific temperature, and measure Sensitivity is adjustable.

Description

technical field [0001] The invention relates to a dynamically tunable temperature sensor, which belongs to the field of temperature sensing and detection in optical systems. Background technique [0002] Photonic crystals are periodic dielectric structures whose most basic features are photonic bandgap and photonic localization, which were first independently proposed by Yablonovitch and John in 1987. The one-dimensional photonic crystal has the advantages of simple structure, easy realization, easy integration and low insertion loss, and has become the most widely studied and practically used photonic crystal. In recent years, photonic crystals have been introduced into the field of sensing and measurement, and many sensing devices with excellent performance have been designed. Such as photonic crystal pressure sensors, photonic crystal gas sensors, photonic crystal torque sensors, photonic crystal biosensors, etc., have expanded the application fields of photonic crystals...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K11/00
Inventor 张娟张荣军
Owner SHANGHAI UNIV
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