title: Technique for referencing of fiber-optic intensity-modulated sensors by use of counterpropagating signals.
abstract: We present a new all-optical fiber-referencing scheme for intensity-modulated sensors. It consists of a closed loop traversed by sensing and reference optical signals in opposite directions. With the proposed scheme the noise induced by power fluctuations of the optical source and mechanical perturbations can be greatly reduced. We experimentally demonstrate the efficiency of the scheme and discuss its use in a sensor array.
authors.affiliation: Centro de Ciencias Aplicadas y Desarrollo Tecnológico, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City 04510, Mexico. celias@aleph.cinstrum.unam.mx
authors.forename: Celia
authors.initials: C
authors.lastname: Sánchez-Pérez
authors.forename: Augusto
authors.initials: A
authors.lastname: García-Valenzuela
authors.forename: G Eduardo
authors.initials: GE
authors.lastname: Sandoval-Romero
authors.forename: Joel
authors.initials: J
authors.lastname: Villatoro
authors.forename: Juan
authors.initials: J
authors.lastname: Hernández-Cordero