Fiber optic sensors are designed for use in harsh environments such as the power industry. They can be used to monitor specific points or multiplexed to monitor the several applications simultaneously, such as turbines, generators, piping, etc., with a single system. They are ideal tools for non-destructive testing. The sensors are excellent tools providing real-time data for maximizing system efficiency, increasing equipment utilization, predicting maintenance needs and impending failures. They are passive devices requiring no power and are immune to EMI. Fiber optic sensors have a proven record of providing extremely accurate and repeatable data over a long period of time.