The sensing characteristics of plasmonic waveguide with a single defect

WITHDRAWN: Tuning the Fano resonances in a single defect nanocavity coupled with a plasmonic waveguide for sensing applications

“…The width and height of the defect are w (w L) and h, respectively. As is well known, the dispersion relation of the fundamental TM mode in the MIM waveguide can be written as [4,[10][11][12]23] A c c e p t e d M a n u s c r i p t…”

“…Both SPPs and localized surface plasmon resonances (LSPR) exhibit very interesting properties for sensing applications due to their high degree of tenability and their A c c e p t e d M a n u s c r i p t susceptibility to the dielectric properties of the surrounding environment [5]. In the field of refractive index sensing, many research groups have focused on Fano resonance tuning in order to narrow the full width at half maximum (FWHM) [5][6][7][8][9] and others have concerned about improving the refractive index sensitivity [10][11][12][13][14], all the research purposes are to reach lower detection limits. Fano resonance in metallic nanostructures is a coupling effect which results from the interaction of a narrow dark resonant mode with a broad bright one, it exhibits sharp and asymmetric spectral line shapes together with strong field enhancements [15], and so Fano resonance significantly reduces the FWHM of the plasmon modes.…”

A Plasmonic Temperature-Sensing Structure Based on Dual Laterally Side-Coupled Hexagonal Cavities

“…Particularly, among these devices, plasmonic sensors have received a lot of attention, owing to its unique advantage about the extremely sensitive response of the transmission spectrum to the change of the external refractive index [ 36 , 37 , 38 , 39 ]. Furthermore, according to the physical relation between the refractive index of dielectric medium and the temperature, the corresponding plasmonic temperature sensors with high integration and sensitivity have recently been studied theoretically and numerically [ 40 , 41 , 42 , 43 ]. However, few researches have focused on the parameter of sensing resolution, which is an important parameter in evaluating the minimum detectable change of environment temperature.…”

A multifunction filter based on plasmonic waveguide with double-nanodisk-shaped resonators

“…Based on SPPs, a number of metalinsulator-metal (MIM) structures have been numerically simulated and/or experimentally demonstrated, such as plasmonic filter [2][3][4][5], wavelength demultiplexing structures [1,6], Mach-Zehnder interferometers [7,8], sensors [9,10], nanolenses [11], splitters [12], and Y-shaped combiners [13]. These devices may be fabricated and applied in future optical communications and integrated optical circuits with the development of nanofabrication and nanocharacterization capabilities [5].…”