Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Towards Replacing Resistance Thermometry with Photonic Thermometry



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


Resistance 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 and depolyability 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 devleopments, clearly demonstate the rapid progress of silicon photonic sensors in replacing legacy devices.
Sensors and Actuators A-Physical


nanophotonics, thermometry, silicon, ITS90
Created December 6, 2017