Exceptional Points and Enhanced Sensing in Photonic Time Crystal
Combining optical sensitivity with selective biological recognition creates opportunities for detecting pathogens and disease-associated biomarkers. Functionalized optical fibers translate interactions at their surfaces into measurable optical responses, providing a foundation for compact, label-free biosensing. This research direction connects photonics with biological analysis and the development of sensing tools for healthcare.
Building on Prof. Tripathi’s earlier contributions to fiber-based bacterial detection, our current efforts explore affinity sensing for biological targets. Key interests include detecting low analyte concentrations, improving selectivity, and achieving stable, repeatable measurements in complex biological environments. These studies aim to establish reliable sensing methods that can support future biomedical applications.
Temporal modulation in photonic time crystals enabling exceptional-point formation, eigenvalue coalescence, and square-root spectral responses for enhanced sensitivity to small perturbations.