3 papers
physics.optics2022
Scalar Diffraction Analysis Of Dispersion In Low-Index Thin Flat Lenses
Ashfaqul Anwar Siraji, Yang Zhao
We analyze the dispersion property of low-index thin lenses by using scalar diffraction and finite difference time domain (FDTD) methods. We compare the dispersion results obtained…
physics.app-ph2018
Tunability of Planar Photonic Crystal Nanocavity: A Comparative study
Ashfaqul Anwar Siraji
A comparative study of the tunability of planar photonic crystal nanocavities is done in this work. Three different types of cavities, e.g., defect cavity, double heterostructure c…
physics.app-ph2018
Highly Sensitive and Robust Ultrahigh-Q Nanocavity on a Multiheterostructure Photonic Crystal
Ashfaqul Anwar Siraji
An ultrahigh-Q hybrid cavity using a graded multiheterostructure and space modulation is designed in this work. Two high Q resonant modes exist in the cavity and follow separate co…