title: In-fiber Fabry-Perot interferometer for strain and magnetic field sensing.
abstract: In this paper we discuss the results obtained with an in-fiber Fabry-Perot interferometer (FPI) used in strain and magnetic field (or force) sensing. The intrinsic FPI was constructed by splicing a small section of a capillary optical fiber between two pieces of standard telecommunication fiber. The sensor was built by attaching the FPI to a magnetostrictive alloy in one configuration and also by attaching the FPI to a small magnet in another. Our sensors were found to be over 4 times more sensitive to magnetic fields and around 10 times less sensitive to temperature when compared to sensors constructed with Fiber Bragg Grating (FBG).
authors.forename: Greice K B
authors.initials: GK
authors.lastname: Costa
authors.forename: Paula M P
authors.initials: PM
authors.lastname: Gouvêa
authors.forename: Larissa M B
authors.initials: LM
authors.lastname: Soares
authors.forename: João M B
authors.initials: JM
authors.lastname: Pereira
authors.forename: Fernando
authors.initials: F
authors.lastname: Favero
authors.forename: Arthur M B
authors.initials: AM
authors.lastname: Braga
authors.forename: Peter
authors.initials: P
authors.lastname: Palffy-Muhoray
authors.forename: Antonio C
authors.initials: AC
authors.lastname: Bruno
authors.forename: Isabel C S
authors.initials: IC
authors.lastname: Carvalho