Design of Optical Quaternary Multiplier Circuit Using Polarization Switch
In all-optical network, optical multiplier circuit is an essential component for data processing. In the present scenario, the conventional binary logic-based data processing system has been suffering from the speed limitation and has also less information handling capacity. Use of multiple-valued logic (MVL) instead of the conventional binary logic system can overcome these limitations. Quaternary logic is one of the promising multi-valued logics. In this article, the authors have developed quaternary multiplier circuit using SOA-based polarization switch. The frequency-encoded data have been used here because of its inherent property of constancy during reflection, refraction, and transmission. Therefore, in spite of any intensity fluctuation, different bits can be processed or communicated without any error and thus, the bit error rate can be minimized which makes the scheme novel one.
KeywordsQuaternary logic Quaternary multiplier Semiconductor optical amplifier Polarization switch
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