Photonic crystal sensors have emerged as a promising solution for highly sensitive, miniaturized, and CMOS-compatible on-chip sensing applications. The integration of these sensors with silicon photonics platforms has enabled high-performance label-free detection of biological and chemical analytes. Finite Element Analysis (FEA) plays a crucial role in designing and optimizing photonic crystal structures to ensure their […]
Photonic crystal nanocavities (PCNCs) have revolutionized the field of integrated photonics by enabling ultra-high quality factor ($Q$) resonators for various applications, including optical sensing, nonlinear optics, and quantum information processing. The design and optimization of high-$Q$ photonic crystal nanocavities require advanced computational modeling techniques, among which Finite Element Analysis (FEA) stands out due to its […]
Ring-core fibers (RCFs) are a specialized type of optical fiber designed to support orbital angular momentum (OAM) modes, which have gained significant attention in optical communication, quantum information processing, and high-capacity data transmission. Unlike conventional step-index fibers, RCFs possess a refractive index profile with a core that is shaped like a ring rather than a […]
IntroductionTamm-plasmon-polaritons (TPPs) are optical surface states that arise at the interface between a metallic film and a photonic crystal (PC). Unlike traditional surface plasmon polaritons (SPPs), which require specific conditions for excitation (such as total internal reflection in a prism-coupled system), TPPs can be directly excited in normal incidence configurations, making them ideal for biosensing […]
Temperature sensors based on one-dimensional (1D) topological photonic crystals (TPCs) represent an advanced class of optical sensors with high sensitivity and robustness against external perturbations. These sensors leverage the unique properties of topological edge states in photonic bandgap structures, offering advantages in precision, stability, and resilience to defects. Introduction to Topological Photonic CrystalsTopological photonic crystals […]
Photonic crystals (PhCs) are periodic dielectric structures that affect the motion of photons in much the same way that the periodic potential in a semiconductor crystal affects electrons. The ability of photonic crystals to create photonic band gaps (PBGs) has led to numerous applications, including optical filters, waveguides, and more recently, sensors. Among the various […]
The concept of large effective area in photonics plays a crucial role in various applications, particularly in optical fiber communications, high-power laser systems, nonlinear optics, and supercontinuum generation. The effective area ($A_{\text{eff}}$) of an optical waveguide defines the spatial confinement of the optical mode and is a key parameter influencing nonlinearity, optical damage threshold, and […]
Laser ablation is a process in which a high-intensity laser beam removes material from a solid surface through various thermophysical mechanisms, including melting, vaporization, and plasma formation. Understanding and modeling laser ablation using Finite Element Analysis (FEA) requires solving complex heat transfer and phase transition equations to capture the dynamic response of the material under […]
Eddy currents are circulating electric currents induced in conductors due to a changing magnetic field. These currents generate resistive heating, leading to energy dissipation. Understanding the power loss due to eddy currents is crucial in applications such as electrical machines, transformers, induction heating, and electromagnetic shielding. This article derives the formula for power dissipation per […]
The Role of Eddy Currents in Induction Heating Eddy Currents in Induction Heating : Induction heating is a highly efficient method for heating conductive materials, widely used in industrial applications such as metal hardening, welding, brazing, and cooking. The primary mechanism driving induction heating is the generation of eddy currents, which produce localized heating within […]
