Simultaneous All-Optical and and nor Gates for NRZ Differential Phase-Shift-Keying Signals |
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| Authors: | Jing Xu Xinliang Zhang Jianji Dong Deming Liu Dexiu Huang |
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| Affiliation: | Huazhong Univ. of Sci. & Technol., Wuhan; |
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| Abstract: | A scheme for realizing all-optical logic AND and NOR gates simultaneously for nonreturn-to-zero differential phase-shift-keying signals is proposed and demonstrated based on a delayed interferometer and two semiconductor optical amplifiers. Experimental demonstration at 20 Gb/s verifies the logic integrity of this scheme. The final results are derived in the ON-OFF keying format with clear open eyes and extinction ratios over 10 dB. The proposed scheme can be expanded to realize arbitrary logic gate. |
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