Optics Express, ( ISI ), Volume (30), No (23), Year (2022-11) , Pages (42712-42727)

Title : ( Generalized homogenization method for subwavelength periodic lattices )

Authors: Atefe Taheri , Mehrdad Shokooh-Saremi ,

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Abstract

Periodic photonic lattices based on Guided-Mode Resonance (GMR) enable the manipulation of the incident light, making them essential components in a plethora of optical elements including filters, sensors, lasers, and polarizers. The GMR is regarded as a resonance phenomenon in the resonant-subwavelength regime of periodic lattices. We present a method that homogenizes these periodic structures in the subwavelength regime and provides an appropriate analytical interpretation of the resonance effect. Here, we propose a technique based on utilizing the dispersion relation for homogenization, which can be applied to multi-part period lattices under oblique incidence. The effect of asymmetry and emergence of the odd/even modes, not considered in previous methods, will also be taken into account and discussed. As a result of this analytical procedure, resonance lines are obtained, which are useful in designing optical elements such as wideband/narrowband reflectors and polarizers.

Keywords

, Effective medium theory, guided-mode resonance, subwavelength gratings.
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@article{paperid:1092067,
author = {Taheri, Atefe and Shokooh-Saremi, Mehrdad},
title = {Generalized homogenization method for subwavelength periodic lattices},
journal = {Optics Express},
year = {2022},
volume = {30},
number = {23},
month = {November},
issn = {1094-4087},
pages = {42712--42727},
numpages = {15},
keywords = {Effective medium theory; guided-mode resonance; subwavelength gratings.},
}

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%0 Journal Article
%T Generalized homogenization method for subwavelength periodic lattices
%A Taheri, Atefe
%A Shokooh-Saremi, Mehrdad
%J Optics Express
%@ 1094-4087
%D 2022

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