chapter  77
Fiber-Optic Thermometers
Pages 12

Optical Ÿber sensing is a remarkably versatile approach to measurement. A Ÿber sensor guides light to and from ameasurement zone where the light is modulated by the measurand of interest and returned along the same or adi¥erent optical Ÿber toadetector at which the optical signal is interpreted. œe measurement zone can be intrinsic within the Ÿber that transports the optical signal or can be extrinsic to the optical waveguide. œe versatility of the Ÿber sensing medium arises in part because of the range of optical parameters that can be modulated and in part because of the diversity of physical phenomena that involve environmentally sensitive interactions with light.