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Complex Bragg Grating Writing using Direct Modulation of the Optical Fibre with Flexural Waves

Oliveira, R.A. ; Marques, C. ; Canning, J. ; Nogueira, R.N. ; Pohl, A.

Applied Physics Letters Vol. 99, Nº 16, pp. 161111 - 161111-3, October, 2011.

ISSN (print): 1077-3118
ISSN (online): 0003-6951

Journal Impact Factor: 3,726 (in 2008)

Digital Object Identifier: 10.1063/1.3655328

A flexural wave is applied to an optical fiber during the process of Bragg grating inscription using the direct writing method through a phase mask. Using this approach, we can dither the writing process to allow complex grating writing. Examples we demonstrate are tunable sampled gratings and phase-shifted gratings.