Modified Septenary System-based logic gates using SLM and savart plate

Optical computing is a significant improvement over conventional electronic circuits due to much higher computing speeds and better data handling capabilities. A multivalued logic (MVL) system incorporates more than two logical states to enable higher data density, reduce or eliminate ripple-through carries in arithmetic operations. Optical multivalued logic may be one of the best solutions in modern computational system to resolve the recent problems associated with the existing one. The singed-bit states in a multivalued logic system also permits simplified carry or borrow free operations. In this paper an optical multivalued logic system with signed-bit is introduced, called Modified Septenary System (MSS). The seven logical states of the system are introduced and different arithmetic and logical operations are also implemented accordingly. The different logic gates of this system are designed and realized with SLM and savart plate using Optical Tree Architectures (OTA).