This review provides a comprehensive overview of FBG sensor technology, focusing on their operating principles, key advantages such as high sensitivity and immunity to electromagnetic interference, and common challenges like temperature-strain cross-sensitivity and the high cost of. This review provides a comprehensive overview of FBG sensor technology, focusing on their operating principles, key advantages such as high sensitivity and immunity to electromagnetic interference, and common challenges like temperature-strain cross-sensitivity and the high cost of. 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. These microscopic structures within optical fibers have become the bedrock of cutting-edge sensor. Fibre Bragg Grating (FBG) sensors are now a revolutionary technology in the optical sensing area, recognized for their high sensitivity, immunity to electromagnetic interference, and reliability of operation in demanding environments. The present review paper provides an in-depth analysis of FBG. In this Chapter we will concentrate on a very special type of OFS: the Fiber Bragg Grating (FBG) sensors.
