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Whispering Gallery Mode Resonators for Precision Temperature Metrology Applications
| Content Provider | MDPI |
|---|---|
| Author | Gugliandolo, Giovanni Tabandeh, Shahin Rosso, Lucia Smorgon, Denis Fernicola, Vito |
| Copyright Year | 2021 |
| Description | In this work, the authors exploited the whispering gallery mode (WGM) resonator properties as a thermometer. The sensor is made of a cylindrical sapphire microwave resonator in the center of a gold-plated copper cavity. Two coaxial cables act as antennas and excite the WGM standing waves in the cylindrical sapphire at selected resonance frequencies in the microwave range. The system affords a high quality factor that enables temperature measurements with a resolution better than 15 µK and a measurement standard uncertainty of 1.2 mK, a value approximately three times better than that achieved in previous works. The developed sensor could be a promising alternative to platinum resistance thermometers, both as a transfer standard in industrial applications and as an interpolating instrument for the dissemination of the kelvin. |
| Starting Page | 2844 |
| e-ISSN | 14248220 |
| DOI | 10.3390/s21082844 |
| Journal | Sensors |
| Issue Number | 8 |
| Volume Number | 21 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-04-17 |
| Access Restriction | Open |
| Subject Keyword | Sensors Spectroscopy Microwave Resonators Whispering Gallery Modes Metrology Thermometry Temperature Measurements |
| Content Type | Text |
| Resource Type | Article |
