Extraordinary Optical Transmission: Coupling of the Wood-Rayleigh anomaly and the Fabry-Perot resonance

TL;DR

This paper demonstrates that combining the Wood-Rayleigh Anomaly and Fabry-Perot resonance significantly enhances the transmission efficiency of 1D metallo-dielectric gratings, offering a new approach to improve optical devices.

Contribution

It introduces a novel method of combining WRA and FP resonance to improve optical transmission, eliminating the need for index matching or core-shell structures.

Findings

Transmission efficiency is significantly improved by combining WRA and FP resonance.

The method can replace index matching and core-shell structures in optical devices.

The results clarify previously unexplained phenomena in optical transmission literature.

Abstract

In this letter, we demonstrate for the first time that by combining the effects of the Wood-Rayleigh Anomaly (WRA) and the Fabry-Perot (FP) resonance, transmission efficiencies of $1$D metallo-dielectric gratings on substrates can be significantly improved compared to when these two phenomena work separately. Results of combining the WRA and the FP resonance can be utilized to eliminate the necessity of using the index matching technique and the core-shell structure for enhancing the performance of extraordinary optical transmission devices. Further, the outcomes of combining the WRA and the FP resonance can elucidate some of the unexplained results in the literature.