Abstract

We have developed a new method based on two cavities containing ${\chi }^{(2)}$ media to reshape optical pulses by an all-optical technique. The system is entirely passive; i.e., all the energy is brought by the incoming pulse and uses two successive optical cavities with independent thresholds. The output pulse is close to a rectangular shape. We show that this technique could be extended to high bit rates and telecommunication wavelength by using very small cavities containing current nonlinear materials.

© 2003 Optical Society of America

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