Fiber optic current sensors work by detecting changes in light as it interacts with a magnetic field created by an electrical current. com Optical Fiber Sensors: Working Principle, Applications, and Limitations Mohamed Elsherif,* Ahmed E. Salih, Monserrat Gutiérrez Muñoz, Fahad Alam, Bader AlQattan, Dennyson Savariraj Antonysamy, Mohamed Fawzi Zaki, Ali K. Yetisen, Seongjun Park, Timothy D. Figure 2: Types of Fiber Optic Sensors Fiber Optic Sensors can be categorized based on their construction and operating principles: 1. At the heart of this technology is the optical fiber itself -- a hair-thin cylindrical filament made of glass that is able to guide light through itself by confining it within regions having different optical indices of refraction. This is a very interesting and also well-known topic in the research field. Fiber optic sensors play a key role in developing the communication system to sense & measure the change within. Fiber optic current sensors are revolutionizing the way electrical currents are measured, providing high sensitivity, immunity to electromagnetic interference (EMI), and the ability to function in harsh environments. However, the current literature contains.