We give an approximate analytical solution to the coupled nonlinear Schrödinger equations that govern the soliton switching in a nonlinear fiber coupler. We have derived, in simple analytical form, the switching condition by which solitons can be switched from one core to another. The analytical result has been checked against the numerical results, and it is found that there is close agreement.
© 1993 Optical Society of America
Original Manuscript: August 4, 1992
Published: March 1, 1993
P. L. Chu, B. A. Malomed, and G. D. Peng, "Analytical solution to soliton switching in nonlinear twin-core fibers," Opt. Lett. 18, 328-330 (1993)