Guided-Wave Optical Bistability and Limiting in Zinc Sulfide Thin Films

B. Svensson, G. Assanto, and G. I. Stegeman

J. Appl. Phys. 67, 3882-3885 (1990)


All-optical limiting and bistability are experimentally demonstrated in zinc sulfide waveguides excited by distributed grating couplers. The results are consistent with the presence of a diffusive nonlinearity through the optothermal effect, and a simplified model of the nonlocal traveling-wave interaction between radiation and guided modes is in agreement with the experimental data.