We show that nonlinear directional couplers with variable coupling coefficients can be used to compose a special kind of switching matrix. The switching matrix can be controlled by the signal itself or by a strong pump. Light routing is realized by adjustment of the power of the signal or the pump. Because light routing is based on the optical Kerr effect, ultrafast routing is possible.
© 2003 Optical Society of America
Gang Jun Liu, Jun Liu, Bin Ming Liang, Qu Li, and Guo Liang Jin, "Nonlinear optical switching matrix," Opt. Lett. 28, 1347-1349 (2003)