Improved Coupled-Mode Analysis of Nonlinear Distributed Feedback Structures

F. J. Fraile-Pelaez, and G. Assanto

Opt. Quantum Electron. 23, 633-637 (1991)


Coupled-mode theory is employed to describe the nonlinear behaviour of a distributed feedback grating, including intensity-dependent terms resulting from the periodic variations in the nonlinearity. The improved coupled-mode analysis leads to modified values for the on and off-switching intensities, as demonstrated numerically.