Developing Microwave Photonic Temperature Sensors

TL;DR

This paper presents a new microwave photonic temperature sensor using a sapphire whispering gallery mode resonator, achieving high accuracy and rapid evaluation through automated data processing.

Contribution

It introduces a mechanically-stabilized hollow cylinder sapphire resonator and demonstrates automated data acquisition for improved temperature sensing.

Findings

Achieved temperature measurement accuracy of 0.01 K

Demonstrated rapid evaluation capability

Validated stability of the hollow cylinder resonator

Abstract

In recent years there has been considerable interest in exploiting the temperature dependence of sapphire whispering gallery mode frequency to develop a mechanically stable, high accuracy temperature sensor. Disk-resonator-based devices have been demonstrated to measure temperature with .01 K or better accuracy in the temperature range of 273 K to 373 K. Here we have utilized automated data acquisition and processing to rapidly evaluate a mechanically-stabilized sapphire whispering gallery mode resonator based on a hollow cylinder configuration.