LiFi cross-connection node model using whispering gallery mode of light in a microring resonator

Microsystem Technologies - A free space cross-connection of the optical signals using an optical micro/nano-electro-mechanical system(OMEMS/ONEMS) is designed and simulated using the commercial...     

Array waveguide grating model for nanoparticle sensor applications

The grating coupling surface plasmon polariton (SPP) waveguide is designed for nanoparticle sensors applications, where the properties of SPP waveguide model such as grating length and grating space length are designed with the Matlab and Optiwave programs. The propagation vector β of SPP grating slot waveguide is evaluated, from which the sensor applications model are simulated by the finite difference time domain method. The effective permittivity of the nanoparticle solution is evaluated. The sensor models are selected and the effective permittivity of the nanoparticle solution and used in the simulation model. The sensor activity of waveguides is determined with various values of the permittivity of grating space. The simulation result shows that the surface plasmonic TM₀ mode of the design model is depended on a resonance with input wavelength, period length, space length, number of the grating, the permittivity of grating space, and the nanoparticle concentration in grating space area. It shows that the cut off wavelength is shipped by the refractive index of grating space, while the result of simulation at some low IR wavelengths shows linear relative between H_y field intensity of TM₀ mode and grating space refractive index. The graph between H_y field intensity and concentration of nanoparticle solution also shows a good linear function, which has the good potential for sensor applications.