ACTA PHOTONICA SINICA SIMPLIFIED SOLUTION OF NONLINEAR OPTICAL DIRECTIONAL COUPLER
非线性光定向耦合器解的简化表达式

The simplified analytic solutions for the nonlinear optical directional couplers have been derived in arbitrary input conditions.Based on the solutions,the operating points of NLDC i.e.input conditions for switching,modulation and amplification (almost all applications) can be determined easily and analytically.A new application of the nonlinear directional coupler that the phase of the intense lightwave can be adjusted by the power of the weak lightwave has been investigated theoretically.