Abstract

We propose a multi-cavity resonant architecture that is established by employing two opposing ultrathin silver-based films to form a Fabry–Pérot (F–P) cavity and inserting one or two metallic mesh layers in between. Compared with the single F–P cavity, the multi-cavity architecture with one metallic mesh layer experimentally exhibits a ${\sim}{37}\%$ improvement in the average shielding effectiveness and maintains a transmittance over 80% at 550 nm. A more significant improvement of ${\sim}{108}\%$ in shielding effectiveness (SE) can be achieved by inserting two metallic mesh layers. The proposed multi-cavity architecture provides a strategy for removal of the hindrance to transparent electromagnetic interference shielding.

© 2021 Optical Society of America

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