Glucose Sensing on Plasmonic Nanostructures Using MIM Waveguide with Notch Ring Resonator

Abstract

In this paper, a high-sensitivity plasmonics waveguide system using the finite-difference-time-domain method for numerical simulations is proposed to develop a novel Plasmon glucose sensor with a high transmission, which consists of a notched ring nano-resonator coupled to multi-stub waveguides. The metal and insulator of the proposed plasmonic biosensor are silver and air, respectively. The proposed design has a single transmission peak in the mid-infrared range, with a high transmission based on obtained simulation results. The sensitivity is a crucial parameter for characterizing sensor performance. Increasing sensitivity can improve the detection limit. The advantages of the proposed structure are the resonance wavelength with a linear relationship with the refractive index (RI) and high sensitivity as 4508 nm/RIU. We investigate the effect of different structural parameters of multiple stubs on their sensitivity and transmission spectra. By considering these features, the proposed biosensor has the potential for high sensitivity and transmission and easy manipulation of the resonance wavelength for different RI. It will be helpful in compact optical devices for optical communications integrated photonics circuits and pave the way for the future of the plasmonic structure.

Wide spectrum multiple Fano resonances for high sensitivity detection of refractive index and temperature in MIM waveguides coupled with racetrack resonator nanorod-arrays

“…Both in theory and in practice, a wide range of SPP-based devices, including sensors [4], Plasmon-induced transparent (PIT) structures [5,6], Lasers [7], Logic circuits [8] and optical filters [9], were recently suggested and developed. Owing to their exceptional sensitivity towards any changes in refractive indices (RI) of the metal and dielectric stacks, SPP-based sensor concepts attract unprecedented attention for label-free, rapid [10,11] molecular detection of Glucose [12], Drugs [13], Proteins [14], DNA [15] as well as physical parameters such as temperature [16] for biomedical and environmental monitoring devices.…”

Ultra wideband bandstop plasmonic filter in the NIR region based on stub resonators

“…This evanescent field interacts with the near vicinity of the metal. Because of their ability to overcome the typical diffraction limit and manipulate light in nanoscale dimensions, SPPs are regarded as the most (useful, effective,K) method for designing highly integrated optical circuits [4,5].…”

A dual-purpose sensor with a sawtooth U-shaped cavity and a rectangle-shaped cavity in a MIM waveguide structure

“…The development of optoelectronic and integrated optical devices has driven a growing demand for highly integrated and multifunctional photonic devices. However, conventional photonic devices are limited by the diffraction limit of light, which greatly restrains their integration and miniaturization capabilities [1,2]. Surface plasmon polaritons (SPPs) have emerged as a technology capable of handling light beyond the optical diffraction limit.…”