Introduction to THz Photonic Crystal Fiber (PCF) Sensors Terahertz (THz) photonic crystal fibers (PCFs) have emerged as a powerful platform for sensing applications in biomedical diagnostics, environmental monitoring, chemical detection, and material characterization. The ability of THz radiation (0.1–10 THz) to penetrate non-conductive materials while being highly sensitive to molecular vibrations makes it ideal for […]
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 […]
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 […]
