Title :
PPLN-Based Flexible Optical Logic and Gate
Author :
Wang, Jian ; Sun, Junqiang ; Sun, Qizhen ; Wang, Dalin ; Zhang, Xinliang ; Huang, Dexiu ; Fejer, M.M.
Author_Institution :
Huazhong Univ. of Sci. & Technol., Wuhan
Abstract :
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.
Keywords :
Q-factor; lithium compounds; logic gates; optical frequency conversion; optical logic; optical materials; optical waveguides; AND gate; LiNbO3; PPLN; Q-factor; bit rate 20 Gbit/s; cascaded sum-frequency generation; difference-frequency generation; flexible optical logic gate; optical frequency conversion; periodically poled lithium niobate waveguide; Fiber nonlinear optics; Logic gates; Optical attenuators; Optical filters; Optical saturation; Optical signal processing; Optical waveguides; Stimulated emission; Sun; Ultrafast optics; All-optical logic gate; cascaded sum- and difference-frequency generation (cSFG/DFG); optical signal processing; periodically poled lithium niobate (PPLN);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.913227
