title: Ultra-sensitive chip-based photonic temperature sensor using ring resonator structures.
abstract: Resistance thermometry provides a time-tested method for taking temperature measurements. However, fundamental limits to resistance-based approaches has produced considerable interest in developing photonic temperature sensors to leverage advances in frequency metrology and to achieve greater mechanical and environmental stability. Here we show that silicon-based optical ring resonator devices can resolve temperature differences of 1 mK using the traditional wavelength scanning methodology. An even lower noise floor of 80 μK for measuring temperature difference is achieved in the side-of-fringe, constant power mode measurement.
authors.forename: Haitan
authors.initials: H
authors.lastname: Xu
authors.forename: Mohammad
authors.initials: M
authors.lastname: Hafezi
authors.forename: J
authors.initials: J
authors.lastname: Fan
authors.forename: J M
authors.initials: JM
authors.lastname: Taylor
authors.forename: G F
authors.initials: GF
authors.lastname: Strouse
authors.forename: Zeeshan
authors.initials: Z
authors.lastname: Ahmed
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D010783:Photometry / Q000295:instrumentation*; D020349:Surface Plasmon Resonance / Q000295:instrumentation*; D013817:Thermography / Q000295:instrumentation*