Performance enhancement of solar cells based on high photoelectric conversion efficiency of h-BN and metal nanoparticles

Tunable Perfect Absorber of Graphene Metamaterial in the Terahertz Band and Its Sensing Properties

Detection of amino acid with metamaterial perfect absorbers in the terahertz band

Optical-fibre characteristics based on Fano resonances and sensor application in blood glucose detection

We propose an optical-fibre metal-insulator-metal (MIM) plasmonic sensor based on the Fano resonances of surface plasmon polaritons (SPPs). Its structure consists of a coupling fibre that connects C-shaped and rectangular cavities and a main fibre that contains a semi-circular resonator. When incident light passes through the main fibre, it excites SPPs along the interface between the metal and medium. The SPPs at the resonator induce Fano resonances, owing to the coupling effect. The results show that the designed optical-fibre MIM plasmonic sensor could flexibly tune the number of Fano resonances by adjusting the structure and geometric parameters to optimise the sensing performance. The full width at half maximum of the Lorentzian resonance spectra formed by the electric and magnetic fields reached 23 nm and 24 nm, respectively. The wavelength of the Fano resonance shifted as the refractive index changed; thus, the proposed sensor could realise the application of sensing and detection. The highest sensitivity achieved by the sensor was 1770 nm/RIU. Finally, we simulated the designed sensor to human blood-glucose-level detection, and observed that the resonance wavelength would increase with the increase of glucose concentration. Our study shows that optical fibres have broad application prospects in the field of electromagnetic switching and sensing.

Novel glucose concentration sensor with unique resonance lineshapes in optical cavity

Broadband terahertz metamaterial absorber based on graphene resonators with perfect absorption

Optical refractive index sensor with Fano resonance based on original MIM waveguide structure

Detecting the temperature of ethanol based on Fano resonance spectra obtained using a metal-insulator-metal waveguide with SiO2 branches

Novel high-quality Fano resonance based on metal-insulator-metal waveguide with L-shaped resonators*

Novel high sensitivity SPR sensor based on surface plasmon resonance technology and IMI waveguide structure

Measurement of water content in heavy oil with cavity resonator

Sense high refractive index sensitivity with bragg grating and MIM nanocavity

Sense trace gases based surface plasmon polarization waveguide of graphene

Tunable temperature sensor based on an integrated plasmonic grating

Novel graphene enhancement nanolaser based on hybrid plasmonic waveguides at optical communication wavelength

Physical characteristics with SPP in the metallic nanowires structure