Beyond spectral resolution in optical sensing: Picometer-level precision with multispectral readout
Abstract
Optical sensors offer precision, remote read-out, and immunity to electromagnetic interference but face adoption challenges due to complex and costly readout instrumentation, mostly based on high-resolution. This article challenges the notion that high spectral resolution is necessary for high performance optical sensing. We propose co-optimizing the linewidths of sensor and readout to achieve picometer-level precision using low-resolution multispectral detector arrays and incoherent light sources. This approach is validated in temperature sensing, fiber-tip refractive index sensing, and biosensing, achieving superior precision to high-resolution spectrometers. This paradigm change in readout will enable optical sensing systems with costs and dimensions comparable to electronic sensors.
Cite
@article{arxiv.2408.07487,
title = {Beyond spectral resolution in optical sensing: Picometer-level precision with multispectral readout},
author = {M. S. Cano-Velázquez and S. Buntinx and A. L. Hendriks and A. Van Klinken and C. Li and B. J. Heijnen and M. Dolci and L. Picelli and M. S. Abdelkhalik and P. Sevo and M. Petruzzella and F. Pagliano and K. D. Hakkel and D. M. J. van Elst and P. J. van Veldhoven and E. Verhagen and P. Zijlstra and A. Fiore},
journal= {arXiv preprint arXiv:2408.07487},
year = {2024}
}