Chirped Bragg grating fabricated in fused fibre taper for strain–temperature discrimination

摘要: In this work, two sensing heads based on the fibre Bragg gratings written in fused biconical taper for simultaneous measurement of temperature and strain are proposed. first configuration a comparison between uniform grating tapered section, resulting chirp grating, is evaluated. The second head consists different regions section. This has geometry each conical achieved by stretching at velocities during fabrication process. These configurations similar sensitivities used to discriminate physical parameters. performances assessed compared. structure presents good performance more sensitivity, compared head.