Recent advances in all-optical half-subtractor and full-subtractor based on photonic crystal platforms

F Parandin, S Olyaee, F Heidari, M Soroosh… - Journal of Optical …, 2025 - degruyter.com
A half-subtractor is a digital circuit that subtracts two inputs and displays the result in two
outputs. Photonic crystals (PhCs) are used in optical circuits, including encoders …

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 …

Ultra-fast tunable optoelectronic 2-to-4 binary decoder using graphene-coated silica rods in photonic crystal ring resonators

S Naghizade, A Didari-Bader, H Saghaei - Optical and Quantum …, 2022 - Springer
Fast and compact optoelectronic devices are highly sought after for applications in high-
speed signal processing in optical communication networks. One approach to realizing such …

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 …

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 …

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 …

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 …

A tunable broadband graphene-based metamaterial absorber in the far-infrared region

SM Alden Mostaan, H Saghaei - Optical and Quantum Electronics, 2021 - Springer
This paper reports a new design of a broadband absorber composed of graphene, dielectric,
and gold layers. The designed absorber has four absorbent modes close to each other …