Instabilities and all-optical phase-controlled switching in a nonlinear directional coherent coupler

Wabnitz, S.; Wright, E. M.; Seaton, C. T.; Stegeman, G. I.
October 1986
Applied Physics Letters;10/6/1986, Vol. 49 Issue 14, p838
Academic Journal
The instability in the evolution of a nonlinear wave along a directional coupler is investigated with the beam propagation method, both for self-focusing and for self-defocusing materials. A new device is proposed for switching an intense light beam at the device output by changing the relative phase of a weak input signal.


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