Towards replacing resistance thermometry with photonic thermometry

摘要

Highlights?We present uncertainty analysis of a packaged photonic thermometer.?Photonic sensors with Q's of 104 are sufficient for temperature measurements with uncertainties of ?40 mK?Long-term drift limits packaged photonic thermometers uncertainty to 175?mK.AbstractResistance thermometry provides a time-tested method for taking temperature measurements that has been painstakingly developed over the last century. However, fundamental limits to resistance-based approaches along with a desire to reduce the cost of sensor ownership and increase sensor stability has produced considerable interest in developing photonic temperature sensors. Here we demonstrate that silicon photonic crystal cavity-based thermometers can measure temperature with uncertainities of 175?mK (k?=?1), where uncertainties are dominated by ageing effects originating from the hysteresis in the device packaging materials. Our results, a ≈4-fold improvement over recent developments, clearly demonstate the rapid pr