This invention comprises configurations of all-optical NAND, NOT, AND and OR logic gates by using optical fibers and interacting light intensities to realize the switching mechanism. Multiple gate connections are proposed with the universal NANDgatetocreateany of the basic logic gates.

The switching mechanism operates in the frequency domain of the optical signals,and is based on the principles of stimulated Brillouin scattering (SBS) in an optical fiber. Through the optimization of the light signals in this scattering process, a number of different gates have been simulated for different configurations. The proposed gates are free from polarization instabilities and polarization mode dispersion (PMD) which plague current fiber non linearity-based techniques of optical gate construction.

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