Distributed Optical Fiber Sensing (DFOS) transforms standard fiber optic cables into powerful sensors capable of detecting temperature, strain, and acoustic signals at thousands of measurement points over long distances. Unlike traditional sensors, fiber optic sensors use light to detect changes in their environment, making them immune to electromagnetic. 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"). Fibers have many uses in remote sensing. Utilizing the fiber as a sensor enables continuous measurement along its full length, sensing every centimeter of the fiber — this is referred to as. Fiber-optic sensors detect objects and conditions by directing light to a test object and evaluating the intensity change of the returning light. They can detect very small objects, are particularly flexible to mount and are extremely resistant in harsh environments – even in high temperatures. The fiber optic sensor has an optical fiber connected to a light source to allow for detection in tight spaces or where a small profile is beneficial.
