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PPLN-based all-optical 40 Gbit/s three-input logic AND gate for both NRZ and RZ signals

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4 Author(s)
Wang, J. ; Huazhong Univ. of Sci. & Technol., Wuhan ; Sun, J. ; Zhang, X. ; Huang, D.

Reported is an all-optical high-speed three-input logic AND gate using cascaded sum- and difference-frequency generation (cSFG/DFG) in a periodically poled lithium niobate (PPLN) waveguide. The converted idler wave via cSFG/DFG carries the AND result of the three-input signals. PPLN-based 40 Gbit/s three-input logic AND operations for both non-return-to-zero (NRZ) and return-to-zero (RZ) signals are successfully demonstrated in the experiment.

Published in:

Electronics Letters  (Volume:44 ,  Issue: 6 )