title: Hybrid Raman/fiber Bragg grating sensor for distributed temperature and discrete dynamic strain measurements.
abstract: We propose and experimentally demonstrate a hybrid fiber optic sensing technique that effectively combines Raman optical time domain reflectometry and in-line time-division-multiplexing for fiber Bragg grating (FBG) dynamic interrogation. The highly integrated proposed scheme employs broadband apodized low reflectivity FBGs with a single narrowband optical source and a shared receiver block, allowing for simultaneous measurements of distributed static temperature and discrete dynamic strain, over the same sensing fiber.
authors.affiliation: Scuola Superiore Sant'Anna, Pisa, Italy. i.toccafondo@sssup.it
authors.forename: Iacopo
authors.initials: I
authors.lastname: Toccafondo
authors.forename: Mohammad
authors.initials: M
authors.lastname: Taki
authors.forename: Alessandro
authors.initials: A
authors.lastname: Signorini
authors.forename: Farhan
authors.initials: F
authors.lastname: Zaidi
authors.forename: Tiziano
authors.initials: T
authors.lastname: Nannipieri
authors.forename: Stefano
authors.initials: S
authors.lastname: Faralli
authors.forename: Fabrizio
authors.initials: F
authors.lastname: Di Pasquale