20 Gb/s all-optical and gates and nor gates using cascaded SOAs

Based on cross-gain modulation (XGM) in cascaded semiconductor optical amplifiers (SOAs), all-optical AND and NOR operations at 20 Gb/s were both realized in the same configuration. By controlling the input signal power, the two logic gates can be achieved from different output channels. Single-port-couple SOAs with 1000 μm active regions are exploited to improve the output performance. The dependence of the output characteristics on the input signal power and wavelength was also investigated. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 484–487, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22144

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