Transforming Fabry-Perot resonances into a Tamm mode

TL;DR

This paper introduces a new photonic structure that transitions between Fabry-Perot and Tamm modes, enabling high transmittivity and broad application potential in photonics.

Contribution

It presents a novel hybrid structure supporting resonances that transition from Fabry-Perot to Tamm modes, differing from previous designs.

Findings

Supports high transmittivity of 50% through thick structures

Resonances can be tuned between Fabry-Perot and Tamm modes

Potential for diverse photonic applications

Abstract

We propose a novel photonic structure composed of metal nanolayer, Bragg mirror and metal nanolayer. The structure supports resonances that are transitional between Fabry-Perot and Tamm modes. When the dielectric contrast of the DBR is removed these modes are a pair of conventional Fabry-Perot resonances. They spectrally merge into a Tamm mode at high contrast. Such behavior differs from the results for structures supporting Tamm modes reported earlier. The optical properties of the structure in the frequency range of the DBR stop band, including highly beneficial 50% transmittivity through thick structures, are determined by the introduced in the paper hybrid resonances. The results can find a wide range of photonic applications.