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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
- 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.
- Subjects :
- optical switching
Computer Networks and Communications
Physics::Optics
01 natural sciences
Optical switch
010309 optics
PT symmetry
Optics
0103 physical sciences
Electronic
Transparency (data compression)
Optical and Magnetic Materials
Electrical and Electronic Engineering
010306 general physics
Absorption (electromagnetic radiation)
coherent perfect absorption
scattering matrix
Physics
business.industry
graphene
metasurface
Electronic, Optical and Magnetic Materials
Optical phenomena
Computer Networks and Communication
Signal beam
Embedding
Optoelectronics
business
Realization (systems)
Beam (structure)
Subjects
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