title: Differential birefringence in Bragg gratings in multicore fiber under transverse stress.
abstract: We present experimental measurements of the peak splitting of the reflection spectra of fiber Bragg gratings as a result of birefringence induced by transverse loading of a multicore fiber. Measurements show that the splitting is a function of the applied load and the direction of the load relative to the azimuth of the fiber. A model for calculating the stress in the fiber that is due to an applied load is in good agreement with our experimental observations.
authors.affiliation: Applied Optics and Photonics Group, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, UK.
authors.forename: Manuel
authors.initials: M
authors.lastname: Silva-Lopez
authors.forename: Cheng
authors.initials: C
authors.lastname: Li
authors.forename: William N
authors.initials: WN
authors.lastname: MacPherson
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Moore
authors.forename: James S
authors.initials: JS
authors.lastname: Barton
authors.forename: Julian D C
authors.initials: JD
authors.lastname: Jones
authors.forename: Donghui
authors.initials: D
authors.lastname: Zhao
authors.forename: Lin
authors.initials: L
authors.lastname: Zhang
authors.forename: Ian
authors.initials: I
authors.lastname: Bennion