Enhancing refractive index sensing capability with hybrid plasmonic–photonic absorbers
Abstract
We experimentally report an enhanced refractive index sensor with a maximum figure of merit (FOM*) value of about 1337 based on a hybrid plasmonic–photonic absorber via utilizing a substantial absorption contrast between a perfect absorber (∼99% at normal incidence) and a non-perfect absorber when there are changes in their surroundings.