Robertson E E, Eason R W, Kaczmarek M, Chandler P J, Huang X
Opt Lett. 1996 May 1;21(9):641-3. doi: 10.1364/ol.21.000641.
Photorefractive planar waveguides have been fabricated in cerium-doped strontium barium niobate (Sr(x)Ba(1-x)Nb(2)O(6), 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 BaTiO(3) and KNbO(3) 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.
通过离子束注入在掺铈的铌酸锶钡（Sr(x)Ba(1-x)Nb(2)O(6)，SBN）单晶中制备了光折变平面波导。所测得的TM模和TE模的损耗分别低至0.1和7.0 dB cm(-1)。在这些波导上进行的后续双光束耦合实验表明，与通过离子束注入形成的BaTiO(3)和KNbO(3)波导不同，双光束耦合增益方向并未反转。此外，响应时间缩短了2个数量级。
