title: Tilted Fiber Bragg Grating photowritten in microstructured optical fiber for improved refractive index measurement.
abstract: We report what we believe to be the first Tilted short-period Fiber Bragg Grating photowritten in a microstructured optical fiber for refractive index measurement. We investigate the spectral sensitivity of Tilted Fiber Bragg Grating to refractive index liquid inserted into the holes of a multimode microstructured fiber. We measure the wavelength shift of the first four modes experimentally observed when calibrated oils are inserted into the fiber holes, and thus we determine the refractive index resolution for each of these modes. Moreover, a cross comparison between experimental and simulation results of a modal analysis is performed. Two simulation tools are used, respectively based on the localized functions method and on a finite element method. All results are in very good agreement.
authors.affiliation: CEA LIST, Centre d'Etudes de Saclay, 91191 Gif-sur-Yvette cedex France. minhchau.phanhuy@gmail.com
authors.forename: Minh Châu
authors.initials: MC
authors.lastname: Phan Huy
authors.forename: Guillaume
authors.initials: G
authors.lastname: Laffont
authors.forename: Véronique
authors.initials: V
authors.lastname: Dewynter
authors.forename: Pierre
authors.initials: P
authors.lastname: Ferdinand
authors.forename: Laurent
authors.initials: L
authors.lastname: Labonté
authors.forename: Dominique
authors.initials: D
authors.lastname: Pagnoux
authors.forename: Philippe
authors.initials: P
authors.lastname: Roy
authors.forename: Wilfried
authors.initials: W
authors.lastname: Blanc
authors.forename: Bernard
authors.initials: B
authors.lastname: Dussardier