title: Measurement of temperature profile induced by the optical signal in fiber Bragg gratings using whispering-gallery modes.
abstract: The temperature sensitivity of whispering-gallery mode resonances of an optical fiber is exploited to measure thermal effects induced by an optical signal of moderate power along a fiber Bragg gating (FBG). The UV inscription technique used for the fabrication of FBG introduces a permanent change in the absorption coefficient of the fiber; thus, thermal effects are expected. The resonance wavelength shift of whispering-gallery modes provides information about the temperature change in the fiber, point to point. We present the experimental characterization of the thermal effects in FBG as a function of the wavelength and the power of the launched optical signal through the grating.
authors.forename: M
authors.initials: M
authors.lastname: Delgado-Pinar
authors.forename: I L
authors.initials: IL
authors.lastname: Villegas
authors.forename: A
authors.initials: A
authors.lastname: Díez
authors.forename: J L
authors.initials: JL
authors.lastname: Cruz
authors.forename: M V
authors.initials: MV
authors.lastname: Andrés