An electro-optic comparator based on photonic crystal ring resonators covered by graphene nanoshells

S Naghizade, A Didari-Bader, H Saghaei, M Etezad - Optik, 2023 - Elsevier
A logic comparator is a digital circuit comprised of numerous transistors on an integrated
circuit that compares two binary numbers. Researchers have proposed various designs for …

An ultrafast all-optical half adder using nonlinear ring resonators in photonic crystal microstructure

MH Sani, AA Tabrizi, H Saghaei… - Optical and Quantum …, 2020 - Springer
Half adder and half subtractor are the basic building blocks of an arithmetic logic unit used in
every optical central processing unit (CPU) to provide computational operators. In this paper …

Design and analysis of a novel four‐channel optical filter using ring resonators and line defects in photonic crystal microstructure

A Foroughifar, H Saghaei, E Veisi - Optical and Quantum Electronics, 2021 - Springer
In this paper, we report a new design of an all-optical filter using photonic crystal
microstructure. Ring resonators, line defects, scatterer rods, microcavities, and coupling rods …

An ultra-narrowband all-optical filter based on the resonant cavities in rod-based photonic crystal microstructure

M Hosseinzadeh Sani, A Ghanbari… - Optical and Quantum …, 2020 - Springer
In view of the large scientific and technical interest in the frequency-selective all-optical
devices, and some optical filters limitations, we focus on the design and analysis of a novel …

High-sensitivity biosensor for simultaneous detection of cancer and diabetes using photonic crystal microstructure

MH Sani, A Ghanbari, H Saghaei - Optical and Quantum Electronics, 2022 - Springer
In this study, we propose a refractive index-based sensor to detect skin cancer (Basal, HeLa,
MDA-MB-231) through human blood. It also can detect diabetes through human tear fluid …

Generation and categories of solitons in various mode-locked fiber lasers

B Gao, RH Zhang, JY Huo, CY Ma, Y Han, QR Hou… - Optik, 2020 - Elsevier
Optical solitons generated from fiber lasers have been extensively investigated for their
good stability, narrow pulse width and high peak power, which play an indispensable role in …

Efficiency improvement of a silicon-based thin-film solar cell using plasmonic silver nanoparticles and an antireflective layer

AA Tabrizi, A Pahlavan - Optics communications, 2020 - Elsevier
This paper presents a silicon thin-film solar cell (TFSC) integrated with the silver
nanoparticles. It consists of anti-reflection, absorption and reflective layers in which the anti …

Enhancement of absorption and effectiveness of a perovskite thin-film solar cell embedded with gold nanospheres

AA Tabrizi, H Saghaei, MA Mehranpour, M Jahangiri - Plasmonics, 2021 - Springer
This paper proposes a novel design of plasmonic perovskite solar cell (PSC). It consists of
an anti-reflective glass of fluorine-doped tin oxide (FTO), a compact buffer layer of n-type …

A novel design of all-optical 4 to 2 encoder with multiple defects in silica-based photonic crystal fiber

S Naghizade, H Saghaei - Optik, 2020 - Elsevier
An encoder logic gate is a combinational circuit that performs the coding operation on the
input binary data, and 2 n input lines are encoded with n bits. In this paper, we present a …

Tunable graphene-on-insulator band-stop filter at the mid-infrared region

S Naghizade, H Saghaei - Optical and Quantum Electronics, 2020 - Springer
This paper presents a novel graphene-on-insulator (GOI) band-stop filter in the mid-infrared
region. The finite-difference time-domain method is used to model our GOI basic and …