Photorefractive planar waveguides have been fabricated in cerium-doped strontium barium niobate (SrxBa1-xNb2O6, SBN) single crystals by ion-beam implantation. The losses measured were as low as 0.1 and 7.0 dB cm-1 for the TM and the TE modes, respectively. Subsequent two-beam-coupling experiments performed on the waveguides showed that, unlike for BaTiO3 and KNbO3 waveguides formed by ion-beam implantation, the two-beam-coupling gain direction did not reverse. Also, the response time had been reduced by 2 orders of magnitude.
© 1996 Optical Society of America
Elaine E. Robertson, Robert W. Eason, Malgorzata Kaczmarek, Peter J. Chandler, and Xuefeng Huang, "Ion-beam manipulation of the photorefractive properties of strontium barium niobate planar waveguides," Opt. Lett. 21, 641-643 (1996)