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Practical ring-resonator thermometer with an uncertainty of 10 mK

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1016/j.measurement.2023.113453
AuthorSearch for: 1ORCID identifier: https://orcid.org/0000-0003-3525-2980; Search for: 1; Search for: 2; Search for: 2ORCID identifier: https://orcid.org/0000-0002-0490-5224; Search for: 2; Search for: 2; Search for: 2
Affiliation
  1. National Research Council Canada. Metrology Research Centre
  2. National Research Council Canada. Quantum and Nanotechnologies
FormatText, Article
Subjectphotonic thermometry; temperature sensor; silicon ring resonator
Abstract
Silicon ring resonators are currently being assessed by several national metrology organizations as thermometers for use in calibration laboratories and in high-accuracy commercial applications. In this paper, we report the improvements to our first prototype of Si ring-resonator thermometer including narrower ring resonances, different light polarization in the ring and smaller-footprint probe housing. We evaluated the second prototype in the stirred liquid bath between 23 °C and 80 °C over the span of 11 months and we present, for the first time, the full uncertainty budget for the packaged ring-resonator thermometer. The combined 10-mK standard uncertainty for our ring-resonator thermometer is not only identical to the repeatability reported previously for an unpackaged ring resonator but it also includes an 11-month long-term stability component. This result heralds a commercial ring-resonator thermometer.
Publication date
PublisherElsevier
In
  • Measurement 221, no. C, 113453 (15 November 2023).
LanguageEnglish
Peer reviewedYes
IdentifierS0263224123010175
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Record created2024-10-28
Record modified2024-10-28
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