All-optical and and NAND gates based on cascaded second-order nonlinear processes in a Ti-diffused periodically poled LiNbO3 waveguide

Yeung Lak Lee, Bong Ahn Yu, Tae Joong Eom, Woojin Shin, Changsoo Jung, Young Chul Noh, Jongmin Lee, Do Kyeong Ko, Kyunghwan Oh

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

All-optical AND and NAND gates have been demonstrated in a Ti-diffused periodically poled LiNbO3 channel waveguide which has two second-harmonic phase-matching peaks by cascaded sum-frequency-generation/ difference-frequency-generation (cSFG/DFG) and sum-frequency-generation (SFG) processes. The conversion efficiency of signal to idler (AND gate signal) was approximately 0 dB in cSFG/DFG process. In the second SFG process, more than 15 dB extinction ratio between signal and dropped signal (NAND gate signal) has been observed.

Original languageEnglish
Pages (from-to)2776-2782
Number of pages7
JournalOptics Express
Volume14
Issue number7
DOIs
Publication statusPublished - 2006 Apr

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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