All-optical phase controlled amplitude modulator

G. Assanto, I. Torelli, and S. Trillo

Electron. Lett. 30, 733-735 (1994)


Based on the cascading of second-order nonlinearities, the authors propose a novel scheme for all-optical processing exploiting the tensorial nature of the second-order susceptibility. A weak phase-modulated signal can efficiently modulate the amplitude of a frequency-degenerate orthogonally polarised intense beam through coherent interaction via the generated second-harmonic. Device feasibility in lithium niobate is addressed.