Round-robin for fibre Bragg grating metrology during COST270 action

The study of the effect of high optical power on FBGs among different laboratories whitin the COST270 action required to verify the consistency and convergence of Bragg grating measurements obtained by the laboratories involved in COST270. This papers reports and discusses the results obtained during a round-robin for fibre Bragg grating metrology initiated within the COST270 action. This action was undertaken in order to minimize measurement scattering and to reduce the uncertainty in the interpretation of following COST270 round-robin measurements on the effect of high optical power on FBGs. This exercise dealed with the spectral characterization of FBGs written in standard telecommunication optical fibre (CORNING SMF-28) provided by the coordinating laboratory (Ecole Polytechnique F ed erale de Lausane, Institut d'Optique Appliqu ee)