High sensitivity microsensor assisted by Fano resonance in InSb based terahertz plasmonic waveguide

• Autorzy: Liu Huaiqing , Zhong Shuomin , Xu Gaoming

Identyfikatory

DOI

10.37190/oa190405

• Języki publikacji: EN

Abstrakty

EN

We propose a compact terahertz plasmonic structure comprising an InSb-dielectric-InSb waveguideside-coupled with two stub resonators. Due to the coherent interference of the splitting discrete andquasi-continuum modes, the reflection spectrum possesses a sharp asymmetric Fano resonance dip, which stems from the phase difference between the two stub resonators. Owing to the permittivity temperature dependent property of InSb, the Fano resonance dip can be actively controlled by tuning temperature. The physical features contribute to a highly efficient plasmonic sensor for both refractive index and temperature sensing. The microsensor yields a sensitivity of ̴2.9 THz/RIUand 1.8 × 10^–3 THz/°C. This multiparameter high sensitivity microsensor may find important applications in medical sensing, biosensing and on-chip sensing working in terahertz region.

Słowa kluczowe

EN

plasmonic; microsensor; terahertz; Fano resonance

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2019
• Tom: Vol. 49, nr 4
• Strony: 585--596
• Opis fizyczny: Bibliogr. 37 poz., rys.

Twórcy

autor

Liu Huaiqing

• Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China
• Laboratory of Infrared Material and Devices, Advanced Technology Research Institute, Ningbo University, Ningbo 315211, China

autor

Zhong Shuomin

• Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China
• Laboratory of Infrared Material and Devices, Advanced Technology Research Institute, Ningbo University, Ningbo 315211, China

autor

Xu Gaoming

• Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China
• Laboratory of Infrared Material and Devices, Advanced Technology Research Institute, Ningbo University, Ningbo 315211, China

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).