A new type circular photonic crystal fiber for orbital angular momentum mode transmission

H Zhang, W Zhang, L **, X Tang… - IEEE Photonics …, 2016 - ieeexplore.ieee.org
We proposed a new circular photonic crystal fiber (C-PCF), which can support 14 orbital
angular momentum (OAM) modes transmission, with the good features of wide bandwidth …

On modeling of plasmonic devices: overview

A Said, KSR Atia, SSA Obayya - Journal of the Optical Society of …, 2020 - opg.optica.org
Plasmonics offers strong light localization into subwavelength dimensions beyond the
diffraction limit. Therefore, plasmonics has a significant impact on realizing nanoscale …

Highly sensitive bilirubin biosensor based on photonic crystal fiber in terahertz region

AR Elhelw, MSS Ibrahim, ANZ Rashed… - Photonics, 2023 - mdpi.com
An unstable bilirubin level in the human blood causes many dangerous health problems,
such as jaundice, coronary artery disease, ulcerative colitis, and brain lesions. Therefore …

Refractive index sensor based on plasmonic D-shaped photonic crystal fiber with pyramid grating

NA Elmahdy, MFO Hameed, SSA Obayya - Optical and Quantum …, 2022 - Springer
In this work, highly sensitive D-shaped photonic crystal fiber (PCF) sensor with plasmonic
pyramid grating is introduced and analyzed. The sensing mechanism depends on the …

Terahertz photonic crystal fiber for sensing the creatinine level in the blood

MSS Ibrahim, MSM Esmail, M Tarek… - Optical and Quantum …, 2023 - Springer
In this work, THz photonic crystal fiber (PCF) is used to detect the creatinine level in the
blood with high sensitivity. The sensing technique depends on increasing the light …

Full vectorial finite-element-based imaginary distance beam propagation solution of complex modes in optical waveguides

SSA Obayya, BMA Rahman, KTV Grattan… - Journal of lightwave …, 2002 - opg.optica.org
In this paper, we address accurate computation of complex propagation constants and field
distributions of different modes, in general, lossless and lossy optical dielectric waveguides …

Design and characterization of compact single-section passive polarization rotator

BMA Rahman, SSA Obayya, N Somasiri… - Journal of lightwave …, 2001 - opg.optica.org
In this paper, an improved design for a short and low-loss polarization rotator is proposed,
consisting of a single-section asymmetrical waveguide butt-coupled between two standard …

Design of optical polarization splitters in a single-section deeply etched MMI waveguide

BMA Rahman, N Somasiri, C Themistos, KTV Grattan - Applied Physics B, 2001 - Springer
The design of a single-section polarization splitter in a deeply etched semiconductor MMI
waveguide is presented. Numerically simulated results indicate that the semiconductor MMI …

Plasmonic photonic crystal fiber sensor for optical partial discharge detection

AM Saber, MFO Hameed, J El-Azab, RY Amer… - Optical and Quantum …, 2022 - Springer
Detection of partial discharge (PD) is vital to reassure the operation reliability of high voltage
(HV) electrical power systems. Optical detection methods have been developed in recent …

Beam propagation modeling of polarization rotation in deeply etched semiconductor bent waveguides

SSA Obayya, BMA Rahman… - IEEE Photonics …, 2002 - ieeexplore.ieee.org
A rigorous study of polarization rotation in deeply etched semiconductor optical waveguide
bends has been carried out and results are presented, using the finite element-based fully …