A5067963935- Optical Network Technologies
- Advanced Photonic Communication Systems
- Optical Wireless Communication Technologies
- Advanced Fiber Optic Sensors
- Semiconductor Lasers and Optical Devices
- Photonic and Optical Devices
- Anomaly Detection Techniques and Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Industrial Vision Systems and Defect Detection
- Advanced Fiber Laser Technologies
- TiO2 Photocatalysis and Solar Cells
- Advanced Nanomaterials in Catalysis
National Taipei University of Technology
2020-2025
Debre Berhan University
2023-2024
Mizan Tepi University
2014
This paper reports the effect of temperature on properties TiO_2 nanomaterials, synthesis and characterization. TiO2 powders were synthesized by sol-gel method using TiCl4 solution added in deionized water ice bath under fume hood followed addition ethanol with vigorous stirring for 30 min at room temperature. The gel was obtained then got dried oven 200oC 4 hours. Then, calcinated 250oC, 400oC 600oC furnace hours each. nanomaterials characterized XRD, UV-Vis spectrophotometer, Transmission...
This article proposes a novel integration of bidirectional free-space optics (FSO) and fiber-based fiber Bragg gratings (FBG) sensor structure for long-distance sensing signal transmission system. The proposed FSO technique is crucial to address concerns topographical limitations that make cable installation complex. According experiments, as compared the scheme with unidirectional channel achieved higher output power clear reflected spectra FBGS after 50 kilometers SMF transmission....
This research investigates the integration of free-space optics (FSO) with fiber Bragg grating (FBG) sensors in self-healing ring architectures, aiming to improve reliability and signal-to-noise ratio temperature sensing within sensor systems. The combination FSO’s wireless connectivity FBG sensors’ precision, known for their sensitivity immunity electromagnetic interference, is particularly advantageous demanding environments such as aerospace structural health monitoring. architecture...
In this paper, we demonstrated a novel bidirectional high-speed transmission system integrating free-space optical (FSO) communication with 5G wireless link, utilizing high-power erbium-doped fibre amplifier (EDFA) for enhanced loss compensation. The supports downlink rates of 1-Gb/s/4.5-GHz and 10-Gb/s at 24-GHz 39-GHz, an uplink rate 10-Gb/s/28-GHz. EDFA boosts signal strength, facilitating reliable long-distance through the FSO link while compensating losses reducing bit error (BER)...
In this work, we designed a novel hybrid of free-space optics (FSO) communication and intensity wavelength division multiplexing (IWDM)-fiber Bragg grating (FBG) sensor system over single shared FSO transmission channel for both optical signal transmission. the proposed system, use one broadband light source link FBG transmission, which significantly reduces cost installation complexity. Besides, is used to solve problem geographical constraints when environment difficult install fiber....
To address the growing demand from emerging applications, high transmission capacity is essential for both fibre backbones and last-mile communications. This can be achieved by integrating optical with wireless technologies, facilitating development of fibre-free-space Here we report a bidirectional wavelength-division-multiplexing communication employing polarisation multiplexing technique tunable vestigial sideband filter. The considerably increased scheme. performance extensively enhanced...
In this paper, we proposed and experimentally demonstrated the association of a fiber Bragg Grating (FBG) sensing system with You Only Look Once V7 (YOLO V7) to identify vibration signal faulty machine. experiment, YOLO network architecture consists backbone, three detection heads (Headx3), path aggregation (PAN), feature pyramid (FPN). The has an FBG sensor interrogator employed for collecting signals or data when degradation fault occurs. An collects independently, then object algorithm is...
The integration of fiber-optical wireless convergence with fifth generation new radio is crucial in building high-performance access networks. This approach not only provides high-transmission-rates but also ensures broad coverage, which vital for future Here we report fiber-wireless converged systems by injection locking multi-optical carrier into directly-modulated lasers. Data rates 10 Gb/s, 20 and 40 Gb/s are achieved direct modulation on lasers using 16-quadrature amplitude...
In this paper, we investigate a novel approach that using the fiber Bragg grating (FBG) sensor in internet of things (IoT) applications for real-time remote sensing systems. For FBG network, hybrid Raman amplifier (RA) and Erbium-doped (EDFA) is proposed. IoT system, used to improve flexibility, adaptability, manageability monitoring conditions objects or physical environment due low cost, sensing, high reliability. The result experiment indicates an improved gain spectrum spontaneous...
Fifth generation (5G) new radio (NR) fiber-wireless integrated systems using polarization multiplexing-multiband technique and self-polarization diversity scheme are successfully implemented. Polarization is an effectual method to enhance the transmission capacity spectral efficiency of systems. Self-polarization efficient for demultiplexing, in which x-polarized (y-polarized) optical carrier with multiple signals can be detected single-ended photodiodes. The 5G NR sub-terahertz (THz)...