An all-optical scheme of signed digit binary addition based on optical non-linear material

Abstract

We propose a new integrated method which covers addition of any two signed digit numbers in all-optical domain. To implement this scheme we have exploited some photo-refractive characters of optical non-linear materials, which may experience 0.1–0.2 dB attenuation loss as silica is used as non-linear medium. Moreover, the attenuation loss may be reduced to 0.001 dB/m if we consider the use of slow light at 1.56 μm.

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