The fiber optic sensor detects very small quantities

High Sensitivity: Fiber optic sensors can accurately detect even the smallest physical changes, offering very high sensitivity. This makes them widely used in precision instruments and environments with high demands for accuracy. 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"). They can detect very small objects, are particularly flexible to mount and are extremely resistant in harsh environments – even in high temperatures. A fiber optic sensor measures a physical quantity by modulating the intensity, spectrum, phase, or polarization of light traveling through the optical fiber system. It's a device that converts light rays into electronic signals. 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. Further there are many points why fiber optic sensors are used in place of traditional size and. Fiber optic sensors also called optical fiber sensors are fiber-based technology that is used to sense some quantities such as temperature and mechanical pressure, and sometimes to measure the displacement, vibrations, rotations, pressure, acceleration, and concentration of chemicals.