Broadband on-chip spectral sensing via directly integrated narrowband plasmonic filters for computational multispectral imaging.

ABSTRACT: Spectroscopy underpins a wide range of applications, including biomedical diagnostics, precision agriculture, remote sensing, and industrial process control. Recent advances in silicon and microwave photonic integration have facilitated the miniaturization of spectroscopic systems, enabling portable, real-time analysis. However, the realization of a chip-scale platform that simultaneously achieves broadband coverage, high resolution, and scalable low-cost fabrication - particularly in the near-infrared (NIR) regime - remains a significant challenge. Here, we present a compact and cost-effective NIR spectroscopic sensing chip that monolithically integrates a plasmonic bandpass filter array with InGaAs photodetectors. The device is fabricated via single-step lithography and features a nanoho

SUBMITTER: Zheng Q 

PROVIDER: S-EPMC12717906 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature