A typical fiber optic current sensor consists of the following components: Optical Fiber: The core component that transmits light through the fiber. Magnetic Field Sensing Element: This interacts with the magnetic field created by the electrical current. It's a device that converts light rays into electronic signals. The durable fiber, which is protected by resistant. A fiber-optic sensor is a sensor that uses optical fiber either as the sensing element ("intrinsic sensors"), or as a means of relaying signals from a remote sensor to the electronics that process the signals ("extrinsic sensors"). Due to its small size, low cost and ease of fabrication leading it to replace traditional sensors which were used frequently before th birth of fiber optic sensors.