Application of dynamic line narrowing in resonant optical sensing.
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We propose a dynamic operational mode and the resulting dynamic line narrowing as a method for enhancing the resolution and the detection limit of high-quality (high-Q) resonant optical sensors. Using a silica microtoroid as an experimental platform, we demonstrate that dynamic line narrowing through the thermo-optic effect can significantly improve the detection limit in both resonant shift and resonance splitting operating modes.
author list (cited authors)
Liu, F., Lan, S., & Hossein-Zadeh, M.