Controlling Fano resonances in multilayer dielectric gratings towards optical bistable devices

Thu Trang Hoang; Quang Minh Ngo; Dinh Lam Vu; Hieu P.T. Nguyen

doi:10.1038/s41598-018-34787-9

Controlling Fano resonances in multilayer dielectric gratings towards optical bistable devices

Thu Trang Hoang, Quang Minh Ngo, Dinh Lam Vu, Hieu P.T. Nguyen

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

The spectral properties of Fano resonance generated in multilayer dielectric gratings (MDGs) are reported and numerically investigated in this paper. We examine the MDG consisting of numerous identically alternative chalcogenide glass (As₂S₃) and silica (SiO₂) multilayers with several grating widths inscribed through the structure, emphasizing quality (Q) and asymmetric (q) factors. Manipulation of Fano lineshape and its linear characteristics can be achieved by tailoring the layers’ amount and grating widths so that the proposed structure can be applicable for several optical applications. Moreover, we demonstrate the switching/bistability behaviors of the MDG at Fano resonance which provide a significant switching intensity reduction compared to the established Lorentzian resonant structures.

Original language	English (US)
Article number	16404
Journal	Scientific reports
Volume	8
Issue number	1
DOIs	https://doi.org/10.1038/s41598-018-34787-9
State	Published - Dec 1 2018

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title = "Controlling Fano resonances in multilayer dielectric gratings towards optical bistable devices",

abstract = "The spectral properties of Fano resonance generated in multilayer dielectric gratings (MDGs) are reported and numerically investigated in this paper. We examine the MDG consisting of numerous identically alternative chalcogenide glass (As2S3) and silica (SiO2) multilayers with several grating widths inscribed through the structure, emphasizing quality (Q) and asymmetric (q) factors. Manipulation of Fano lineshape and its linear characteristics can be achieved by tailoring the layers{\textquoteright} amount and grating widths so that the proposed structure can be applicable for several optical applications. Moreover, we demonstrate the switching/bistability behaviors of the MDG at Fano resonance which provide a significant switching intensity reduction compared to the established Lorentzian resonant structures.",

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AU - Hoang, Thu Trang

AU - Ngo, Quang Minh

AU - Vu, Dinh Lam

AU - Nguyen, Hieu P.T.

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AB - The spectral properties of Fano resonance generated in multilayer dielectric gratings (MDGs) are reported and numerically investigated in this paper. We examine the MDG consisting of numerous identically alternative chalcogenide glass (As2S3) and silica (SiO2) multilayers with several grating widths inscribed through the structure, emphasizing quality (Q) and asymmetric (q) factors. Manipulation of Fano lineshape and its linear characteristics can be achieved by tailoring the layers’ amount and grating widths so that the proposed structure can be applicable for several optical applications. Moreover, we demonstrate the switching/bistability behaviors of the MDG at Fano resonance which provide a significant switching intensity reduction compared to the established Lorentzian resonant structures.

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Controlling Fano resonances in multilayer dielectric gratings towards optical bistable devices

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