Amit Halder

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Verified

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• PhD in Physics (Ongoing)
• PhD Student at The University of Adelaide

Holey Fibers have attracted considerable attention due to their capacity to customize optical properties, leading to advancements in a variety of fields such as telecommunications, sensing, and laser systems. In this work, we introduce a novel design of Dual Semi-Circular Core Modified Circular Cladding Holey Fiber (DSCMC-HF), which demonstrates ex...

This paper investigates the error rate performance of wireless communication systems employing 32-Frequency Shift Keying (32-FSK) modulation in fading environments, using MATLAB as the simulation platform. Key parameters such as delay vector, Doppler shift, K-factor, and diffuse Doppler shift are systematically varied to analyze their effects on sy...

The paper presents a thorough investigation into the design of a Modified Core Hexa–Deca Photonic Crystal Fiber (MHD-PCF) with adjustable features to regulate dispersion and birefringence. At the target wavelength of 1550 nm, the suggested MHD-PCF exhibits extraordinary optical properties, including an ultra-high negative dispersion coefficient of...

This paper describes an exceptionally high birefringent modified slotted core circular photonic crystal fiber (MSCCPCF). At the 1.55 μm telecommunication wavelength, the proposed fiber structure aims to achieve exceptional birefringence performance through the thoughtful placement of air holes and the incorporation of slots. The optical properties...

We analyze a novel modified hexagonal porous core photonic crystal fiber (MHPC-PCF) whose design parameters are optimized to maximize terahertz (THz) wave transmission efficiency. The core structure of the modified hexagonal PCF has four-ring hexagonal pores in the middle of the core. The dispersion at 1 THz is −0.004453 ps∕THz∕cm, the confinement...

Siemens LOGO PLC is a compact system for small automation projects, programmed via LOGO Soft Comfort. Its graphical interface enables easy circuit program creation, facilitating customized control systems swiftly. LOGO Soft Comfort allows offline and online testing, simulation, and program archiving. PLC timers, integral to the system, regulate inp...

This research investigates the potential of flint glass as a foundational material for photonic crystal configurations designed to achieve high nonlinear coefficients across various communication wavelengths. We explore dispersion management within telecom bands using flint glass-based micro-structured optical fibers, employing numerical analysis v...

This study introduces an optimized ultra-high nonlinear photonic crystal fiber (UHN-PCF) design utilizing flint glass as the core material. The hexagonal cladding structure of the proposed photonic crystal fiber demonstrates remarkably high negative dispersion spanning the O to U wavelength range (1260 nm to 1675 nm), overcoming the inherent disper...

In this study, we report the design and finite element analysis of a new single-mode modified circular microstructured optical fiber (MC-MOF) designed for strong negative dispersion and nonlinearity over the E to L communication bands. We use modern simulation tools to conduct a thorough finite element study on the fiber's dispersion and nonlinear...

This paper describes a highly nonlinear flint glass-based honeycomb photonic crystal fiber (FGH-PCF) with a wavelength of 1550 nm. The PCF's distinctive honeycomb lattice structure, combined with the nonlinear capabilities of flint glass, enables a wide range of nonlinear optical applications. To adjust the PCF's dispersion and nonlinear effects, n...

This paper investigates the design and tuning of a Broadband Dispersion Compensating Modified Honeycomb Lattice Photonic Crystal Fiber (MHL-PCF) with outstanding features such as strong birefringence and nonlinearity. The proposed PCF for y polarization exhibits a negative dispersion coefficient of −263.9 ps/(nm-km) at 1.55 µm operating frequency a...

This paper presents the development of a highly efficient CT-PCF (Core-Tune Photonic Crystal Fiber) with substantial birefringence, tailored for applications in high-bit-rate communication and sensing while minimizing signal loss. The design incorporates a modified broadband dispersion compensating structure, optimized for operation across the E, S...

This research investigates the impact of 2G mobile communication signals on human well-being by employing numerical simulations to assess electromagnetic wave absorption and tissue heating within the human skull. Using COMSOL Multiphysics and solving the frequency domain nonhomogeneous electromagnetic wave equations, we calculate the Specific Absor...

This article presents a comprehensive analysis of a 16-FSK modulator and demodulator's performance over a Rician fading channel, which accurately models wireless communication channels with line-of-sight and non-line-of-sight components. The study investigates the impact of various parameters, including the Rician K-factor, Maximum Diffuse Doppler...

This paper describes a unique study that uses multiple FIR adaptive filter algorithms to denoise adult electrocardiogram (ECG) data. The study looks at how power line interference, external electromagnetic fields, random body motions, and breathing impact ECG measurement accuracy. The article takes a fresh look at Savitzky-Golay filtering technique...

1. Introduction Wireless communication has witnessed significant growth over the past few years, with mobile communication being the most widely used [1]. However, the transmission of wireless signals is prone to various technical challenges such as fading, shadowing, interference, and propagation path loss, which have a detrimental impact on signa...

The phenomenon of radio frequency electromagnetic energy emitted from mobile phones is widely recognized, and the specific absorption rate (SAR) measures the amount of energy absorbed by the human head. To meet SAR standards, mobile phones can be shielded. This paper utilizes COMSOL Multiphysics to model the human head and simulate SAR distribution...

This article presents a study on ECG signal filtering algorithms to denoise signals corrupted by various types of noise sources. The study also examines the effect of Kronecker tensor product values on ECG rates. The study is conducted in a Matlab environment, and the results demonstrate that a constant number for the respective codes can effective...

Recent advances in Photonic Crystal Fiber (PCF) research have had a significant impact on optical fiber communication systems. The versatile applications of PCFs in the field of telecommunication and biomedical applications are now at the pinnacle. This thesis demonstrates the best potential design for hybrid photonic crystal fibers (HyPCF-I and II...

BPSK and 8-FSK modulation techniques are used in a variety of wireless communication systems. It has a substantial impact on wireless communication channels. The significance of analyzing and comparing the performance of these two modulation techniques over the AWGN fading channel cannot be overstated. This research can be used to determine the bes...

This article reveals a best possible design for hybrid dispersion compensating fiber with high birefringence established on modified broadband compensating structure through S, C and L telecommunication bands. The simulation outcome exhibits relatively higher birefringence of 3.76 × 10−2 at wavelength of 1550 nm. The suggested fiber also has disper...

This article reveals a best possible design for hybrid dispersion compensating fiber (HyDCF) with high birefringence established on modified broadband compensating structure through S, C and L telecommunication bands. The simulation outcome exhibits relatively higher birefringence of 3.76×10-2 at wavelength of 1550 nm. The suggested fiber also has...

This article reveals a best possible design for hybrid dispersion compensating fiber (HyDCF) with high birefringence established on modified broadband compensating structure through S, C and L telecommunication bands. The simulation outcome exhibits relatively higher birefringence of 3.193×10-2 at wavelength of 1550 nm. The suggested fiber also has...

In this study, we developed the optimum design for a highly birefringent hybrid photonic crystal fiber (Hy-PCF) based on an adapted structure for broadband compensation covering the S, C, and L communication bands, i.e., wavelengths from 1400 nm to 1625 nm. The simulation results showed that high birefringence of 3.039 × 10 ⁻² was obtained with a h...

An inspection of signal processing approach in order to determine the number and distance of objects in the sea is conducted in this paper. In recent researches, a great emphasize is put on determining the number and distance of objects in the sea. But unfortunately, it's a difficult task due to the badly effect of high absorption, long propagation...

In this paper a hexagonal microstructure optical fiber design is presented which attains ultra-high birefringence property with high negative dispersion in a wideband transmission system. The finite element method with circular perfectly matched boundary layer is used to examine the guiding properties. According to simulation it is demonstrated tha...

This paper reports a hexagonal microstructure optical fiber design which attains ultra-high birefringence property with high negative dispersion in a wideband transmission system. The finite element method with circular perfectly matched boundary layer is used to examine the guiding properties. According to simulation it is demonstrated that, the p...

This paper inspects a signal processing approach to determine number and distance of objects in the sea. Determining number and distance of objects in the sea are two key factors for underwater communication. Now-a-days navigation, marine experiment, fisheries, detective purposes and many other works in under water are highly dependent on this dete...