Open AccessMason’s rule and Signal Flow Graphs applied to subwavelength resonant structures
Author(s) -
Thomas Estruch,
Fabrice Pardo,
Benjamin Portier,
Julien Jaeck,
Sophie Derelle,
Riad Haïdar
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.027155
Subject(s) - optics , formalism (music) , signal flow graph , scalar (mathematics) , computer science , physics , mathematics , art , musical , geometry , electrical engineering , visual arts , engineering
Widely used for the design of resonant electronic devices, Mason's scalar rule is adapted here to the study of resonant subwavelength optical structures. It turns out to be an efficient formalism, especially when dealing with multiple wave interference mechanisms. Indeed it allows to comprehend the underlying physical mechanisms of the structure in a straightforward way and fast analytical formulae can be retrieved. As an illustration, we apply it to the study of dual metallic gratings, which appear to be promissing optical filters as their spectral shape can be tailored according to needs.