Qing Tan

In-plane illuminated metallic annular aperture array for sensing application

We propose here an application to sensing of annular aperture arrays (AAA). We theoretically investigate the optical properties of the reflective AAA device when illuminated in-plane. The cavity presents almost perfect absorption due to the waveguide mode resonance with strong field localization in the aperture. Additionally, the reflective cavity is modeled to be available for on-chip sensing with a theoretically expected sensitivity of 764 nm/RIU(refractive index unit).

30 nm metallic slot array for sensing: Theoretical and experimental study

The simulation, fabrication and characterization of a metallic slot grating on a silicon waveguide (30 nm slot width for a period of 500 nm) are presented [1]. This device is attempting to be a sensor for refractive index variation measurements with theoretically expected sensitivity of 750 nm/RIU (Refractive Index Unit).