This paper presents the performance analysis of fiber Bragg gratings with diverse chirp profiles in compensating chromatic dispersion in wavelength division multiplexed long-haul optical fiber systems. Fiber Bragg grating (FBG) sensors have emerged as advanced tools for monitoring a wide range of physical parameters in various fields, including structural health, aerospace, biochemical, and environmental applications. This review provides a comprehensive overview of FBG sensor technology. Exceptional points (EPs), intrinsic to non-Hermitian systems, exhibit singular spectral responses with extreme sensitivity to external perturbations, offering new opportunities for precision sensing. 1515/joc-2025-0034 Renuka Devarajan, S.
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