Ghost Resonance Spectroscopy

Abstract

We show the recently discovered ghost waves, a special class of non-uniform waves in biaxial anisotropic media, can offer a new approach to optical sensing, that employs simple planar geometry and low-cost dielectric materials, and provides a high figure of merit for sensor performance.

Ghost sensing: the rise and role of exceptional points in planar geometry

“…Also, the sensor can work reasonably well even if it is not biased at an exceptional point. The sensitivity in that case is comparable with SPR sensors [37].…”