Design and modeling of 2-D photonic crystals based hexagonal triple-nano-ring resonators as biosensors

Si photonic crystal resonator which comprises of three hexagonal nano-rings has been investigated. A forward-dropped peak at 1536.60 nm proves that the proposed triple nano-ring (TNR) resonator is a good channel drop filter, which makes it a good candidate for nanomechanical sensor applications. In this paper, the application of the TNR structure as a biosensor has been studied. It is realized that the symmetrical resonance output of the TNR resonator enhance its suitability as a biosensor as this characteristic makes sensing multiple biomolecules and corroboration of results at same input frequency possible.