Abstract
Nonlinear propagation of light in periodic structures is expected to result in optical bistability for cw excitation and solitons for pulsed excitation.1,2 The high intensities required to obtain these interesting regimes can also lead to significant optical loss effects from the absorption of the material. For example, two-photon absorption or a heating effect can be a dominant factor in some experiments. We are studying a nearly lossless system to better understand soliton effects at wavelengths near the Bragg-grating photonic gap. We use AlxGA1−xAs grating structures and laser wavelengths near 1.6 µm, which corresponds to an energy slightly less than half this semiconductor's band gap.
© 1991 Optical Society of America
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