All-optical soliton switching for the asymmetric fiber couplers Hui Zhong, Bo Tian, Yan Jiang, Min Li, Pan Wang and Wen-Jun Liu Eur. Phys. J. D, 67 7 (2013) 131 Published online: 04 July 2013 DOI: 10.1140/epjd/e2013-30530-y