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All-optical logic gates containing a two-mode nonlinear waveguide

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5 Author(s)
T. Yabu ; Grad. Sch. of Eng., Osaka Prefectural Univ., Sakai, Japan ; M. Geshiro ; T. Kitamura ; K. Nishida
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We propose a new element containing a two-mode nonlinear waveguide consisting of Kerr-like material for all-optical logic circuits. The proposed element, incorporated into the Mach-Zehnder interferometer, functions like a phase shifter. Although the optical waves propagating in the proposed element are monochromatic and identical in polarization, its function is insensitive to the relative phase difference between the incident beams. Using this element, we can realize various logic functions. In this paper, we demonstrate such logic circuits as inverters, distributors, and AND gates

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IEEE Journal of Quantum Electronics  (Volume:38 ,  Issue: 1 )