Open AccessPerformance and noise analysis of optical microresonator-based biochemical sensors using intensity detection
Author(s) -
Xiaoyan Zhou,
Lin Zhang,
Wei Pang
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.018197
Subject(s) - noise (video) , optics , intensity (physics) , signal to noise ratio (imaging) , light intensity , tracking (education) , detection theory , limit (mathematics) , optical sensing , physics , optoelectronics , computer science , detector , artificial intelligence , psychology , mathematical analysis , pedagogy , mathematics , image (mathematics)
Optical microcavity sensors using intensity detection open up the possibility to realize fully integrated high-performance sensing devices, which are significant for both fundamental study of molecular interaction and rapid disease diagnosis. Although the performance of microresonator-based sensors has been studied focusing on the resonance-tracking method, the situation can be much different for intensity-detection sensors. Here we conducted a systematically investigation on the noises sources in intensity detection scheme and their influences on key performance parameters, e.g., signal-to-noise ratio (SNR), limit-of-detection (LOD), and detection range, for various sensors configurations. Especially, the trade-off between SNR and LOD is identified and theoretically analyzed. With experiment noises taken into consideration, our work aims to provide design guidelines for integrated microresonator sensors with optimized performance.