Poynting’s vector theorem describes power flow on twin-core couplers with arbitrary axial perturbations, both linear and nonlinear. This bypasses the coupled amplitude formulation and unifies nonlinear two-mode interactions in general.
© 1989 Optical Society of America
Original Manuscript: January 26, 1989
Manuscript Accepted: July 17, 1989
Published: October 15, 1989
Allan W. Snyder and D. John Mitchell, "Description of nonlinear couplers by power conservation," Opt. Lett. 14, 1146-1148 (1989)