Based on the guidemode characters of dark spatial soliton waveguides and the theory of coupling between two waveguides, a kind of steerable all-optical directional coupler using dark spatial soliton waveguides is suggested.

• 摘要基于空间暗光孤子诱导波导的模式特性以及光波在波导间耦合理论，提出了一种实现光控可变定向耦合器的方法。