Towards replacing resistance thermometry with photonic thermometry

Klimov, Nikolai N.; Purdy, Thomas; Ahmed, Zeeshan

doi:10.1016/j.sna.2017.11.055

Cited by 33 publications

(20 citation statements)

References 23 publications

(32 reference statements)

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“…In addition, there is a growing demand for temperature sensors that can operate in harsh conditions, where electrical readout methods become impractical. New temperature sensors based on photonics or optomechanics are good candidates [2] to answer these metrology challenges as they offer nanoscale spatial resolution, large temperature range and additionally can be self-calibrated with noise-thermometry and even provide a path towards primary temperature standards using quantum measurements [3].…”

Section: Introductionmentioning

confidence: 99%

“…x 2 ∝ k B T between the displacement x of a mechanical resonance mode and temperature T. This technique is similar to Johnson noise-thermometry, which has been extensively studied for the determination of the Boltzmann constant [5]. Johnson noise-thermometry uses a correlation technique to reject non-thermal noise sources, whereas optomechanical noise-thermometry uses a high frequency resonator (MHz to GHz) to reject other noise sources.…”

Section: Introductionmentioning

confidence: 99%

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Photonic and Optomechanical Thermometry

Briant

Krenek

Cupertino

et al. 2022

Optics

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Temperature is one of the most relevant physical quantities that affects almost all processes in nature. However, the realization of accurate temperature standards using current temperature references, like the triple point of water, is difficult due to the requirements on material purity and stability of the environment. In addition, in harsh environments, current temperature sensors with electrical readout, like platinum resistors, are difficult to implement, urging the development of optical temperature sensors. In 2018, the European consortium Photoquant, consisting of metrological institutes and academic partners, started investigating new temperature standards for self-calibrated, embedded optomechanical sensor applications, as well as optimised high resolution and high reliability photonic sensors, to measure temperature at the nano and meso-scales and as a possible replacement for the standard platinum resistant thermometers. This article presents an overview of the results obtained with sensor prototypes that exploit photonic and optomechanical techniques for sensing temperatures over a large temperature range (5 K to 300 K). Different concepts are demonstrated, including ring resonators, ladder-like resonators and suspended membrane optomechanical thermometers, highlighting initial performance and challenges, like self-heating that need to be overcome to realize photonic and optomechanical thermometry applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photonic and Optomechanical Thermometry

Briant

Krenek

Cupertino

et al. 2022

Optics

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“…Fibre optical sensors using Bragg gratings (FBG) or distributed fibre optic methods are commercially available and are highly promising for industrial monitoring applications [1]. Approaches using photonic thermometers show great potential to reach measurement uncertainties comparable to conventional electrical sensors [2,3]. Nevertheless, the determination and reduction of temperature uncertainty is still a challenging task.…”

Section: Introductionmentioning

confidence: 99%

C4.1 Photonic Thermometry at PTB – Promising First Results for Contact Temperature Metrology Utilizing Optical Sensors

Krenek¹,

Eisermann²,

Schmid³

et al. 2021

SMSI 2021 - Sensors and Instrumentation

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Photonic sensors offer new possibilities for the metrological temperature determination in specific applications including high electric fields or harsh environments. Within two EU projects the PTB develop and validate different photonic thermometers from 0 °C to over 1500 °C. The aim of this work is to develop and validate novel accurate photonic thermometers with uncertainties in the mK range and sensors for application within harsh environments at high temperatures. We show first results using silicon ring resonators which achieve high quality factors (Q ≈ 160 000) and over 15 dB filter contrast.

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“…Thermometry is one of the most elementary measurement techniques in physics, biology, chemistry and medicine. Since the invention of the well-known mercury-in-glass thermometer by Daniel G. Fahrenheit [1,2], thermometric devices were further developed to increase comparability, stability, reliability, and sensitivity [3,4]. Very precise instruments have been established in industry (e.g., the platinum resistance thermometer), albeit they are not easily miniaturizable and are susceptible to influences from the outside which can impair their calibration and temperature accuracy [5,6].…”

Section: Introductionmentioning

confidence: 99%

Photonic and Thermal Modelling of Microrings in Silicon, Diamond and GaN for Temperature Sensing

et al. 2020

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Staying in control of delicate processes in the evermore emerging field of micro, nano and quantum-technologies requires suitable devices to measure temperature and temperature flows with high thermal and spatial resolution. In this work, we design optical microring resonators (ORRs) made of different materials (silicon, diamond and gallium nitride) and simulate their temperature behavior using several finite-element methods. We predict the resonance frequencies of the designed devices and their temperature-induced shift (16.8 pm K−1 for diamond, 68.2 pm K−1 for silicon and 30.4 pm K−1 for GaN). In addition, the influence of two-photon-absorption (TPA) and the associated self-heating on the accuracy of the temperature measurement is analysed. The results show that owing to the absence of intrinsic TPA-processes self-heating at resonance is less critical in diamond and GaN than in silicon, with the threshold intensity I th = α / β , α and β being the linear and quadratic absorption coefficients, respectively.

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Towards replacing resistance thermometry with photonic thermometry

Cited by 33 publications

References 23 publications

Photonic and Optomechanical Thermometry

Photonic and Optomechanical Thermometry

C4.1 Photonic Thermometry at PTB – Promising First Results for Contact Temperature Metrology Utilizing Optical Sensors

Photonic and Thermal Modelling of Microrings in Silicon, Diamond and GaN for Temperature Sensing

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