Temperature sensor and / or intensity of microwave radiation based on Bragg gratings in optical fiber

摘要

The invenu00c7u00c3o presented in this text refers to an optical fiber sensor for measuring the temperature and / or the intensity of the field electromagnu00c9tico using a Bragg grating (2) in the optical fibre (1) associated with a jumpy in the radiated microwave material (3).This sensor is obtu00c9m combining a optical fibre (1), in the region where is engraved with a Bragg grating (2), a material (3), to absorb radiation in the range of microwave, increases its temperature, varying their size, or both.This sensor allows the quantitative measurement and mapping, real-time and accurately, temperatures and / or intensities of microwave radiation in high noise environments electromagnu00c9tico, benefiting the other advantages of the use of fiber optics, such as Its small dimensions and high flexibility.