Back to Search Start Over

Coherent perfect absorption and transparency in lossy and loss/gain metasurface-embedding structures

Coherent perfect absorption and transparency in lossy and loss/gain metasurface-embedding structures

Authors :
Federica Bianco
Vaidotas Miseikis
Simone Zanotto
Camilla Coletti
Alessandro Tredicucci
Domenica Convertino
Zanotto, Simone
Bianco, Federica
Miseikis, Vaidota
Convertino, Domenica
Coletti, Camilla
Tredicucci, Alessandro
Source :
International Conference on Transparent Optical Networks-ICTON (2017). doi:10.1109/ICTON.2017.8025114, info:cnr-pdr/source/autori:Zanotto S.; Bianco F.; Miseikis V.; Convertino D.; Coletti C.; Tredicucci A./titolo:Coherent perfect absorption and transparency in lossy and loss%2Fgain metasurface-embedding structures/doi:10.1109%2FICTON.2017.8025114/rivista:International Conference on Transparent Optical Networks-ICTON/anno:2017/pagina_da:/pagina_a:/intervallo_pagine:/volume, ICTON
Publication Year :
2017
Publisher :
IEEE Computer Society, 2017.

Abstract

In this paper we report about the possibility to control a strong signal beam with a much weaker control beam, resorting to the linear optical phenomena known as coherent perfect absorption and transparency (CPA and CPT). First, analytical formulas for CPA and CPT in a realistic yet prototypical configuration of a substrate-backed optically conducting surface (graphene, metallic metasurface...) are reported. Maximal optical control can be achieved by only imposing the conditions for CPA, since CPT is always present in this system. Secondly, we observe that the performance of passive two-port devices as optical switches is always limited by fundamental energy conservation constraints. Meanwhile, we outline how a hybrid gain/loss optical device reminiscent of parity-time symmetric objects can overcome such limitation, enabling the realization of ideal full optical control.

Details

Language :
English
Database :
OpenAIRE
Journal :
International Conference on Transparent Optical Networks-ICTON (2017). doi:10.1109/ICTON.2017.8025114, info:cnr-pdr/source/autori:Zanotto S.; Bianco F.; Miseikis V.; Convertino D.; Coletti C.; Tredicucci A./titolo:Coherent perfect absorption and transparency in lossy and loss%2Fgain metasurface-embedding structures/doi:10.1109%2FICTON.2017.8025114/rivista:International Conference on Transparent Optical Networks-ICTON/anno:2017/pagina_da:/pagina_a:/intervallo_pagine:/volume, ICTON
Accession number :
edsair.doi.dedup.....97c01b2f125573189c3d7fd8c55d86e0
Full Text :
https://doi.org/10.1109/ICTON.2017.8025114