FIBER OPTIC SENSORS
FIBER OPTIC SENSORS What is a Fiber Optic Sensor? A Fiber Optic Sensor (FOS) is a sensor that uses optical fibers (glass or plastic fibers) to detect physical quantities such as temperature, pressure, strain, displacement, vibration, or light . Instead of electrical signals, it uses light to measure changes in the environment. Definition A Fiber Optic Sensor is a sensor in which light travels through an optical fiber, and changes in the light's intensity, phase, wavelength, polarization, or travel time are used to measure a physical parameter. Basic Principle A light source sends light into an optical fiber. When the fiber is affected by a physical quantity (such as temperature or pressure), the properties of the light change. These cha...