• Environmental resistance: Temperature, corrosiveness, explosion-proof requirements, and other factors in the application environment determine whether the sensor can "operate reliably. " • Installation Space: The size of the mounting location; compact sensors are required. 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. Depending on the. A fiber optic sensor measures a physical quantity by modulating the intensity, spectrum, phase, or polarization of light traveling through the optical fiber system. Think of it like a photoresistor, which changes its resistance based. Radiation absorption excites an orbital electron to a higher energy level. Heating the material enables the trapped states to interact with phonons and decay into lower-energy. Among the reasons why optical fibers are such an attractive are their low loss, high bandwidth, immunity to electromagnetic interference (EMI), small size, light weight, safety, relatively low cost, low maintenance, etc. They can operate reliably under high temperatures or corrosive conditions. Optical fibers allow signal transmission over kilometers without significant loss.
