A5022774899- Photonic and Optical Devices
- Photonic Crystals and Applications
- Optical Network Technologies
- Nanowire Synthesis and Applications
- Gyrotron and Vacuum Electronics Research
- Semiconductor Quantum Structures and Devices
- Advanced Optical Sensing Technologies
- Semiconductor Lasers and Optical Devices
- Thin-Film Transistor Technologies
- Phytoplasmas and Hemiptera pathogens
- Magneto-Optical Properties and Applications
- Advanced Fiber Laser Technologies
- Advanced Photonic Communication Systems
University of Reggio Calabria
2024-2025
Sheikh Bahaei University
2022
In this work, we present a graphene-based photodetector specifically engineered to op-erate at wavelength of 1310 nm. The device leverages the SPARK effect, previously investigated only 1550 It features hybrid waveguide structure comprising hy-drogenated amorphous silicon, graphene, and crystalline silicon. Upon optical illumi-nation, defect states release charge carriers into graphene layer, modulating thermionic current across graphene/crystalline silicon Schottky junction. photo-detector...
The demand for faster and more efficient optical communication systems has driven significant advancements in integrated photonic technologies, with switches playing a pivotal role high-speed, low-latency data transmission. In this work, we introduce novel design an adiabatic switch based on the thermo-optic effect using silicon-on-insulator (SOI) technology. approach relies slow signal evolution, minimizing power dissipation addressing challenges of traditional switches. Machine learning...
In this work, we present a graphene-based photodetector operating at wavelength of 1310 nm. The device leverages the SPARK effect, which has previously been investigated only 1550 It features hybrid waveguide structure comprising hydrogenated amorphous silicon, graphene, and crystalline silicon. Upon optical illumination, defect states release charge carriers into graphene layer, modulating thermionic current across graphene/crystalline silicon Schottky junction. demonstrates peak...
Optical power switches are essential components in fiber optic communication systems, requiring minimal losses, a broad operating wavelength range, and high tolerance to fabrication errors for optimal performance. Adiabatic optical inherently meet these criteria well suited manufacturing processes which support large-scale production at low costs. This paper presents the design simulation of an adiabatic switch with flat response whole 1525–1625 nm range (C band L band) both TE TM...
In this paper, first, the optical two-circle switch (OTCS) and then, XOR / XNOR AND logic gates were designed, simulated, optimized. The OTCS designed structure consisted of two rectangular waveguides circles between them. light enters from one waveguide, due to coupling waveguide ring, it circle in case constructive interference, transmitted adjacent circle, finally, transferred another waveguide. If is possible change properties such a way that there no interference it, first will not...
This paper presents a comprehensive simulation study on the design and of an electro-optic ring switch utilizing graphene material. The employs electrically Tunable Refractive Index by to modulate transmission characteristics within resonator structure. By applying electrical voltage ranging from -6 -10V, significant changes are noticed in output ports' characteristics. In particular, through ports varies between 81% 18% for port n.1 21% 83%for no.2, proving that signal propagation can be...
In this work, we propose the design of a compact optical switch featuring wide bandwidth 360 nm, suitable for telecom operations. The is passive 3dB splitter realized through Y-branch, electrically activated via graphene/insulator/graphene (GIG) capacitor embedded within rib waveguide (WG). itself an SOI-based hybrid WG composed crystalline (c-Si) and hydrogenated amorphous silicon (a-Si:H), with GIG between two layers. Such photonic structure optimizes light-matter interaction enables...
This work aim to determine a Single Mode (SM) Silicon-On-Insulator (SOI) rib waveguide using Machine learning (ML) techniques, which learn automatically by matching the input data with target property. Random Forest (RF) is ML algorithm used in this work. The accuracy of model reaches 99% R 2 score. device based on Silicon (Si), cladding made Silica (SiO ). results obtained illustrate conditions for SM, width and etch-depth found be relatively smaller compared total thickness. approach have...
Optical circulators are used in optical devices such as multiplexers, demultiplexers, and routers. Usually, the magnetic material center of circulator conducts light by interacting with electromagnetic wave. In this research, a polarization-independent four-port waveguide presence rhombus-shaped ferrimagnetic has been designed, simulated, optimized three-dimensional part Comsol software. This designed unlike previous structures four ports which use transmission matrix method to conduct...