We suggest a novel approach to soliton control and routing based on Bloch-wave filtering in periodic photonic structures. Taking a binary waveguide array as an example, we demonstrate that spatial solitons that belong to different spectral gaps can be selectively reflected from or transmitted through an engineered defect, which acts as a low- or high-pass filter for Bloch waves.
© 2005 Optical Society of America
Andrey A. Sukhorukov and Yuri S. Kivshar, "Soliton control and Bloch-wave filtering in periodic photonic lattices," Opt. Lett. 30, 1849-1851 (2005)