Fiber optic sensors are prevalent in various applications, from computers and printers to motion detectors. For instance, when a printer or copier door is open, light falls on the sensor, stopping the machine for safety. Radiation absorption creates electronic excited states that are trapped by localized defects for extended periods of time. Heating the material enables the trapped states to interact with phonons and decay into lower-energy. Fiber optic sensing relies on light rays within optical fibers to detect changes in temperature, strain, and other environmental parameters. Utilizing the fiber as a sensor enables continuous measurement along its full length, sensing every centimeter of the fiber — this is referred to as. High speed type fiber optic sensors are at the forefront of this revolution, offering unparalleled speed, accuracy, and efficiency.
[PDF Version]