PPLN-Based Flexible Optical Logic and Gate

Jian Wang, Junqiang Sun, Qizhen Sun, Dalin Wang, Xinliang Zhang, Dexiu Huang, M. M. Fejer
2008 IEEE Photonics Technology Letters  
All-optical flexible 20-Gb/s logic AND gate based on cascaded sum-and difference-frequency generation in a periodically poled lithium niobate waveguide is proposed and experimentally demonstrated. The theoretical analyses further indicate that 40-, 80-, and 160-Gb/s ultrahigh-speed logic AND operations can potentially be performed. Moreover, it is expected that the AND output can be tuned in a wide wavelength range (67 nm) with slight fluctuation of the Q-factor and extinction ratio. Index
more » ... n ratio. Index Terms-All-optical logic gate, cascaded sum-and difference-frequency generation (cSFG/DFG), optical signal processing, periodically poled lithium niobate (PPLN).
doi:10.1109/lpt.2007.913227 fatcat:2lyadmntfncqvc75itrfsrcxgu