We obtained the system of nonlinear differential equations for the areas of the envelopes the propagating supershort pulses in two guides of the coupler, which are the area theorems. We predicted the self-switching phenomenon for the energy transfer from one guide to the other. We investigated the phase portraits and predicted a number of new mechanisms of the pulse transmitting.
P. I. Khadzhi,
O. V. Korovai,
"Area theorems for propagation of laser pulses in couplers", Proc. SPIE 6259, ICONO 2005: Nonlinear Optical Phenomena, 625910 (14 June 2006); doi: 10.1117/12.677908; https://doi.org/10.1117/12.677908