Enhancing the circular waveguide microresonator temperature measurement sensitivity and accuracy by using liquid crystal gap fillingReportar como inadecuado




Enhancing the circular waveguide microresonator temperature measurement sensitivity and accuracy by using liquid crystal gap filling - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

* Corresponding author 1 Institute for Command Engineers of the Ministry of Emergencies 2 IPI PAN - Instytut Podstaw Informatyki

Abstract : We consider the design methods and principles of operation of a fast-response integrated optical sensor for temperature measurement. The sensitive element consists of a microring resonator based on the double-slot waveguide made from Si3N4 and coated on a SiO2 buffer layer, which is disposed on a silicon substrate. The nematic 5CB liquid crystal LC fills the slots of the ring waveguide. The sensor uses only the optical radiation, and the electrical current is not supplied to the measured matter. That allows applying such sensor for measuring the temperature of highly inflammable liquids and gases. The use of the microresonators based on the double-slot waveguides considerably more than one order of magnitude increases the sensor sensitivity. The operating speed of the device is defined by the time of establishing the steady-state regime in the ring microresonator and equals to tens of nanoseconds. The measuring device can consist of a large number of such sensing elements that allows simultaneously controlling the temperature in different points of the fluid flow or the matter volume. The sensor has a micrometer size and can be produced by using routine integrated technologies.

Keywords : Liquid Crystals Sensors simulation Ring microresonators





Autor: Igor Goncharenko - Marian Marciniak -

Fuente: https://hal.archives-ouvertes.fr/



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