Fano Resonance Based on Long Range Surface Phonon Resonance in the Mid-Infrared Region

Autor: Yuhan Wang, Shuwen Zeng, Perry Shum Ping, Xiang Zhao, Tianye Huang, Xiangli Zhang
Přispěvatelé: Key Laboratory for Anisotropy and Texture of Materials, Northeastern University [Shenyang], School of Electrical and Electronic Engineering (EEE), Nanyang Technological University [Singapour], Photonique Fibre et Sources Cohérentes (XLIM-PHOT), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), School of Electrical and Electronic Engineering, Center of Fiber Technology
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: IEEE Photonics Journal
IEEE Photonics Journal, Institute of Electrical and Electronics Engineers (IEEE), 2019, 11 (2), pp.1-8. ⟨10.1109/JPHOT.2019.2907325⟩
IEEE Photonics Journal, Vol 11, Iss 2, Pp 1-8 (2019)
ISSN: 1943-0655
Popis: Surface plasmon polaritons with noble metals lack the capability to restrain an optical field in the long wavelength region, while surface phonon polaritons with polar di-electric crystals have been regarded as a potential low-loss alternative. In this paper, long range surface phonon resonance (LRSPhR) is designed to operate in the mid-infrared (MIR)wavelength regime with a narrow resonance dip. Furthermore, by coupling a photonic wave-guide with the LRSPhR, strong coupling between waveguide mode and long-range surface phonon polariton has been realized to form high Q Fano resonance. By employing such structure as the index sensor, it is shown that the bulk sensitivity and surface sensitivity can reach∼9000 and 266.9 RIU–1, respectively, which shows a great enhancement comparing with the one based on merely LRSPhR. The proposed configuration can be a promising platform for MIR biochemical sensing. Published version
Databáze: OpenAIRE