Acousto-optic interactions in silica waveguide Bragg devices C. Chen, B.R. Shi, M. Zhao and L.J. Guo Eur. Phys. J. Appl. Phys., 57 2 (2012) 20503 Published online: 30 January 2012 DOI: 10.1051/epjap/2011100490