- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Photonic Crystal and Fiber Optics
- Plasmonic and Surface Plasmon Research
- Optical Network Technologies
- Advanced biosensing and bioanalysis techniques
- Terahertz technology and applications
- Optical Wireless Communication Technologies
- Gold and Silver Nanoparticles Synthesis and Applications
- Photonic Crystals and Applications
- Optical Coherence Tomography Applications
- Spectroscopy and Laser Applications
- Gas Sensing Nanomaterials and Sensors
- Advanced Nanomaterials in Catalysis
- SARS-CoV-2 detection and testing
- Advanced Antenna and Metasurface Technologies
- Wireless Signal Modulation Classification
- Metamaterials and Metasurfaces Applications
- Advanced SAR Imaging Techniques
- Industrial Vision Systems and Defect Detection
- Fuel Cells and Related Materials
- Biosensors and Analytical Detection
- Surface Roughness and Optical Measurements
- Polydiacetylene-based materials and applications
- High voltage insulation and dielectric phenomena
Rajshahi University of Engineering and Technology
2018-2025
University of Rajshahi
2024
This paper presents a twin-core photonic crystal fiber (TC-PCF) for early detection of blood cancer based on refractive index (RI) the normal and cancerous cell. The samples cells are considered at 30–70% 80% in liquid form, respectively, proposed to be infiltrated into center air hole which is comparatively larger than others. By considering (RI), change coupling length transmitted spectrum TC-PCF observed by using finite element method (FEM). According shift, sensor can exhibit large...
Simple structure and high sensitivity with a broad detection range are highly desirable for temperature sensor. This work presents sensitive plasmonic sensor based on D-shaped photonic crystal fiber (PCF) in the near infrared region (900–1900 nm) measurement. The proposed is designed by finite element method (FEM) simulation tool sensing properties investigated means of wavelength interrogation (WIM). To support surface plasmon oscillation, 45 nm gold film deposited flat portion PCF which...
For a sensor, high sensitivity, structural simplicity, and longevity are highly desired for measurement of salinity in seawater. This work proposed an ultrahigh sensitive photonic crystal fiber (PCF) sensor based on the sagnac interferometer (SI). The propagation characteristics PCF analyzed by finite element method (FEM). achieved sensitivity reaches up to 37,500 nm/RIU 7.5 nm/% range from 0% 100%. maximum resolutions 2.66 × 10−06 RIU 1.33 10−02% with linearity 0.9924 2.20 cm length PCF....
This work proposes a highly sensitive plasmonic sensing scheme on simple circular lattice microstructure optical fiber (MOF) structure. The proposed sensor performance is evaluated by using the finite element method (FEM) in presence of perfectly matched layer (PML) and scattering boundary conditions. highest amplitude sensitivity 1582.95 RIU−1 wavelength 11,000 nm/RIU gained interrogation method, respectively, for device. In addition, maximum resolution 9.09 × 10−6 RIU obtained suggested...
With technological advancement, photonic crystal fibers (PCFs) are effectively used to design miniaturized, flexible, and efficient biosensors. This paper proposes an exposed core PCF biosensor based on widely known surface plasmon resonance (SPR) phenomena. An external sensing mechanism is followed characterize the performance within refractive index (RI) range between 1.28 1.40. Metal strip (gold (Au) titanium dioxide (TiO 2 )) deposited outer only along four channels instead of entire...
A Zeonex based loss hollow-core anti-resonant fiber (HC-ARF) for polarization filter (PF) application in the terahertz (THz) spectral range is presented here. The finite element method, a practical and precise computational technique, used to compute modal properties of designed fiber. Simulation results indicate minimum 0.34 dB/m at 1.1 THz, less than 2 large bandwidth 460 GHz horizontal mode (HPM) due inclusion nested tubes that direction. In addition, 520 filtering with crosstalk higher...
An optical fiber having the properties of photonic crystal and offering new diversity features beyond a conventional is (PCF). In this paper, simplified version highly sensitive plasmonic sensor, called “slotted PCF based biosensor,” studied numerically with asymmetric air holes using finite element method. From numerical records through interrogation method, maximum obtained wavelength sensitivity amplitude are 22000 nm/RIU <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"...
We report a novel hollow-core asymmetric conjoined-tube anti-resonant (HC-ACTAR) fiber for efficient and low-loss THz wave guidance. The cladding tubes of the proposed HC-ACTAR is formed by conjoining half circle elliptical tube placed in radial direction. observe that superior terms achieving low dispersion wide range frequencies than previously reported designs. show our ensures lowest loss 0.034 dB/m at 1 marinates window 0.5 THz. Moreover, has promising optical properties regime such as...
Hollow-core fibers are advantageous for chemical sensing as they facilitate liquid infiltration into the core over conventional porous fiber. In addition, requirement of less bulk material significantly decreases effective loss (EML). this paper, a six circular cladding tube negative curvature hollow-core fiber (NC-HCF) is proposed sensing. Five different chemicals including chloroform, polylactic acid, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow...
This paper presents the design and analysis of a surface plasmon resonance (SPR) sensor in photonic crystal fiber (PCF) platform, where graphene is used externally to attain improved sensing performance for an aqueous solution. The proposed was analyzed using finite element method-based simulation tool COMSOL Multiphysics. According results, exhibits identical linear characteristics as well very high figure merit (FOM) 2310.11 RIU−1 low detection limit 10−3. also reveals maximum amplitude...
The ease of controlling waveguide properties through unparalleled design flexibility has made the photonic crystal fiber (PCF) an attractive platform for plasmonic structures. In this work, a dual analyte channel's highly sensitive PCF bio-sensor is proposed based on surface plasmon resonance (SPR). design, plasmons (SPs) are excited in inner flat portion two rectangular channels where gold (Au) strip deposited. Thus, roughness that might be generated during metal deposition circular could...
Abstract Photonic crystal fiber (PCF) architectures have garnered significant interest due to their versatile applications across various fields. However, the complexity of PCF designs and computational demands full vectorial finite element method (FV-FEM) simulations pose challenges in fully realizing potential. While prior research has explored artificial neural networks (ANNs) accelerate simulation predictions, proposed approaches were often limited by sample size generalizability. In...
Abstract An innovative metasurface refractive index sensor that operates in the visible to near-infrared (NIR) range is introduced this work. The has a unique half-ring, half-square split design which allows it reach dual absorption peaks, resulting near-perfect values of 99.97\% and 99.99\% region. Reaching 530.05 nm/RIU for spectrum's first peak 620.24 NIR's second peak, resonant structure remarkable sensitivity. Additionally, metasurface's highest figure merit (FOM) 13.88 RIU-1 highlights...
Lung cancer (LC) is a leading cause of cancer-related fatalities worldwide, underscoring the urgency early detection for improved patient outcomes. The main objective this research to harness noble strategies artificial intelligence identifying and classifying lung cancers more precisely from CT scan images at stage. This study introduces novel method, which was mainly focused on Convolutional Neural Networks (CNN) later customized binary multiclass classification utilizing publicly...