title: Optical fiber sensing based on reflection laser spectroscopy.
abstract: An overview on high-resolution and fast interrogation of optical-fiber sensors relying on laser reflection spectroscopy is given. Fiber Bragg-gratings (FBGs) and FBG resonators built in fibers of different types are used for strain, temperature and acceleration measurements using heterodyne-detection and optical frequency-locking techniques. Silica fiber-ring cavities are used for chemical sensing based on evanescent-wave spectroscopy. Various arrangements for signal recovery and noise reduction, as an extension of most typical spectroscopic techniques, are illustrated and results on detection performances are presented.
authors.affiliation: Consiglio Nazionale delle Ricerche, Istituto Nazionale di Ottica (INO), Via Campi Flegrei, 34 I-80078 Napoli, Italy. gianluca.gagliardi@ino.it
authors.forename: Gianluca
authors.initials: G
authors.lastname: Gagliardi
authors.forename: Mario
authors.initials: M
authors.lastname: Salza
authors.forename: Pietro
authors.initials: P
authors.lastname: Ferraro
authors.forename: Edmond
authors.initials: E
authors.lastname: Chehura
authors.forename: Ralph P
authors.initials: RP
authors.lastname: Tatam
authors.forename: Tarun K
authors.initials: TK
authors.lastname: Gangopadhyay
authors.forename: Nicholas
authors.initials: N
authors.lastname: Ballard
authors.forename: Daniel
authors.initials: D
authors.lastname: Paz-Soldan
authors.forename: Jack A
authors.initials: JA
authors.lastname: Barnes
authors.forename: Hans-Peter
authors.initials: HP
authors.lastname: Loock
authors.forename: Timothy T-Y
authors.initials: TT
authors.lastname: Lam
authors.forename: Jong H
authors.initials: JH
authors.lastname: Chow
authors.forename: Paolo
authors.initials: P
authors.lastname: De Natale
mesh_terms: D001718:Birefringence; D005336:Fiber Optic Technology; D007834:Lasers; D055100:Optical Fibers; D013057:Spectrum Analysis