Point, Integral, and Distributed Sensors: - Point sensors measure parameters at discrete points. Several schemes for classification of fiber optic sensors have been developed, from different points of view, ranging from the essentially straightforward methods used in a simple survey, such as those based on the physical quantity to be transduced, through to the use of more precise subdivisions. Jose Miguel Lopez-Higuera: Handbook of Optical Fiber Sensing Technology, John Wiley & Sons, 2002. P 603 Radiation absorption excites an orbital electron to a higher energy level. Radiation absorption creates electronic excited states that are trapped by localized defects for extended periods of. Fiber optic sensors are used in a wide range of fields, including: Structural Health Monitoring: Real-time monitoring of the physical condition of structures. Fiber optic current sensors are revolutionizing the way electrical currents are measured, providing high sensitivity, immunity to electromagnetic interference (EMI), and the ability to function in harsh environments. However, the current literature contains. ibration and extreme heat etc. These are the basic reasons for th birth of fiber optic sensors.