Proceedings of the 2019 International Conference on Computer, Network, Communication and Information Systems (CNCI 2019)

Mode-selective Absorption for Spectrum Shaping

Authors
De He, Zhijun Liu
Corresponding Author
Zhijun Liu
Available Online May 2019.
DOI
10.2991/cnci-19.2019.50How to use a DOI?
Keywords
Spectrum shaping, asymmetric dielectric cavity, mode-selective absorption.
Abstract

We report on realization of a spectrum shaping approach using mechanism of mode-selective absorption in a thin-film layered structure. Ultra-thin lossy films are inserted in the asymmetrical dielectric cavity at the location of nodes or antinodes of standing wave mode to reserve or absorb the energy of certain wavelengths. This layer structure can be physically regarded as the limit case of photonic crystal with limited width of forbidden band. The wavelength range and width of forbidden band can be precisely designed by tuning the thickness of each layer. The reflection spectrum is shaped into a broad rectangular flat-bottom feature by placing the ultra-thin absorber at the antinode of standing wave mode of dielectric layer. This is demonstrated experimentally via a fabricated sample. Reflection peak is also discussed theoretically by placing the absorbers at the nodes instead of antinodes to shape the reflection spectrum into a narrow peak in the desired wavelength range. The principle of this spectral shaping method is universal for the entire electromagnetic waves. It is applicable on the other fields such as the physical coloration, broadband absorption devices of energy harvest and infrared detector.

Copyright
© 2019, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the 2019 International Conference on Computer, Network, Communication and Information Systems (CNCI 2019)
Series
Advances in Computer Science Research
Publication Date
May 2019
ISBN
10.2991/cnci-19.2019.50
ISSN
2352-538X
DOI
10.2991/cnci-19.2019.50How to use a DOI?
Copyright
© 2019, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - De He
AU  - Zhijun Liu
PY  - 2019/05
DA  - 2019/05
TI  - Mode-selective Absorption for Spectrum Shaping
BT  - Proceedings of the 2019 International Conference on Computer, Network, Communication and Information Systems (CNCI 2019)
PB  - Atlantis Press
SP  - 348
EP  - 353
SN  - 2352-538X
UR  - https://doi.org/10.2991/cnci-19.2019.50
DO  - 10.2991/cnci-19.2019.50
ID  - He2019/05
ER  -