40-Gbit/s 3-input all-optical priority encoder based on cross-gain modulation in two parallel semiconductor optical amplifiers

Abstract

A 3-input all-optical priority encoder is designed. Proof-of-concept experiment is performed at 40-Gbit/s based on a cross-gain modulation (XGM) in two parallel semiconductor optical amplifiers (SOAs). Output logic signals with over 10-dB extinction ratios (ERs) and clear open eye diagrams are obtained. No additional input light beam is used. The proposed scheme may be a promising candidate for future ultrafast all-optical digital signal processing circuits and computing systems.

Keywords

optical computing / digital information processing / logic gates / cross-gain modulation (XGM) / semiconductor optical amplifier (SOA)

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Acknowledgements

This work was supported by the National Science Fund for Distinguished Young Scholars (No. 61125501), the National Natural Science Foundation of China (Grant No. 60877056), and the National Basic Research Program of China (No. 2011CB301704).

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg