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

Yeung Lak Lee | Zendy; Bong-Ahn Yu | Zendy; Tae Joong Eom | Zendy; Woojin Shin | Zendy; Changsoo Jung | Zendy; Young-Chul Noh | Zendy; Jongmin Lee | Zendy; DoKyeong Ko | Zendy; Kyunghwan Oh | Zendy

Open Access

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

Author(s) -

Yeung Lak Lee,

Bong-Ahn Yu,

Tae Joong Eom,

Woojin Shin,

Changsoo Jung,

Young-Chul Noh,

Jongmin Lee,

DoKyeong Ko,

Kyunghwan Oh

Publication year - 2006

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.14.002776

Subject(s) - optics , signal (programming language) , waveguide , nand gate , extinction ratio , materials science , sum frequency generation , second harmonic generation , nonlinear optics , quasi phase matching , optoelectronics , lithium niobate , physics , channel (broadcasting) , laser , wavelength , telecommunications , computer science , programming language

All-optical AND and NAND gates have been demonstrated in a Ti-diffused periodically poled LiNbO(3) 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.

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