2004/04/20 by David Monzón-Hernández, J. Mora, José Mora +7 · 1 citation
Engineering · #Advanced Fiber Optic Sensors #Photonic and Optical Devices #Photonic Crystal and Fiber Optics
paper · doi:10.1364/ao.43.002393
We present a temperature sensor based on two chirped gratings made in optical fibers tapered by fusion. One of the gratings has a metallic shielding and acts as sensor element, whereas the second grating provides a reference signal. The sensor is interrogated by measuring the power reflected by the two gratings, and the system has an accuracy of 0.05 degrees C over a linear operation range of more than 10 degrees C that can be adjusted in the fabrication process.