Defects modes in one-dimensional photonic filter star waveguide structure

In this work, by the formalism of the interface response theory, we study the existence of defects’ modes in the transmission spectrum of a one-dimensional photonic star waveguide (SWG) structure. The perfect structure presents large forbidden bands (gaps) that come from the periodicity of the syste...

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Bibliographic Details
Main Authors: Ben-Ali, Youssef, El kadmiri, Ilyass, Tahri, Zakaria, Bria, Driss
Format: Conference Proceeding
Language:English
Subjects:
Defects modes
Electromagnetic filter
Gaps
Green Function
Star waveguide structure
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Summary:In this work, by the formalism of the interface response theory, we study the existence of defects’ modes in the transmission spectrum of a one-dimensional photonic star waveguide (SWG) structure. The perfect structure presents large forbidden bands (gaps) that come from the periodicity of the system and the resonance states of the grafted lateral branches which play the role of the resonators. The defects modes result from the presence of the defects of the lateral branches level located in two different sites. The behavior of the defects’ modes is analyzed as a function of the defects’ lengths, the number of defectives resonators, the positions of the defects’ and the number of sites. This system can be considered as a selective filter with high performance.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2020.03.525