High coupling efficiency 2D metasurface integrated with strip waveguide in SOI for mid‐IR wavelengths

Bilal, Asif; Younis, Usman

doi:10.1049/iet-opt.2018.5146

Cited by 1 publication

(2 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This means that according to (11), U p decays at the rate of 1/p 2 . In other words, large p values can be selected for Z sigo mn to ensure that good convergence occurs without encountering unacceptable errors during the calculation of the Bessel functions of large order.…”

Section: The Matrix Equation Of the Interior Problemmentioning

confidence: 99%

“…Simulation of nanometre-sized metal particles at optical frequencies can be quite challenging [8][9][10]. This is because the numerical methods that discretise the whole volume, like finite difference time domain (FDTD) [11,12] or finite element method (FEM) [13], have to solve for very fine meshes, especially around the boundary. This is mainly due to the fact that at optical frequencies, fields penetrate metals and decay very rapidly inside them.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design and analysis of optical sensors composed of large arrays of nanowires using the surface impedance generating operator (SIGO) method

Gholipour

Karimian

2021

IET Optoelectronics

View full text Add to dashboard Cite

The design and analysis of large arrays of nanoscale scattering elements using existing computational tools is particularly difficult. Such difficulty mainly arises from large number of unknowns and the way existing CAD tools handle the analysis of complex nanostructures. In this work, a simple, reliable and fast analytical tool is introduced based on the surface impedance generating operator method, which not only reduces the number of unknowns through surface discretisation of the scatterers but can also be implemented in a parallel process, reducing simulation time. Circular and linear arrays of nanowires are designed using the proposed method to have a directive pattern and to be deployed in a rake-shaped optical probe head. The far-field scattering patterns of the arrays are investigated. In addition, the effects of array configuration as well as the number of elements and their properties on the directivity and beamwidth of the scattering patterns are also evaluated. Finally, high-resolution directive scanning probes made of a circular array of 31 gold nanowires and a linear array of 15 elements are designed at 800 nm with less than 3°beamwidth.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

show abstract

Section: The Matrix Equation Of the Interior Problemmentioning

confidence: 99%