On-Chip Silicon Photonic Thermometers: from Waveguide Bragg Grating to Ring Resonators sensors

Fundamental limitations of resistance thermometry, as well as the desire to reduce sensor ownership cost has led to considerable interest in the development of photonic temperature sensors as an alternative to resistance thermometers. These innovative temperature sensors have the potential to leverage advances in frequency metrology to provide cost effective measurement solutions. Here we present the results of our efforst in developing novel photonic temperature sensors. Our preliminary results indicate that using photonic devices such as the ring resonators, photonic crystal cavities and Bragg reflectors we can achieve measurement capabilities that are on-par or better than the state of the art in resistance thermometry.