Optical logic circuits using double controlled logic gate

Conventional irreversible computer is power dissipative. Data loss is the major problem in such computation, but it can be minimised with a special circuit design. In this study optical ‘double controlled logic’ (DCL) circuit is proposed, which can minimise the circuit complexity and power cost. The mathematical model of the DCL circuit is given in this study, which also has good cascadability and compactness. Some complex logic circuits (16‐Boolean logic unit, grey‐to‐binary‐to‐grey code conversion and cross‐bar network architecture) using controlled logic unit have also been proposed in this study. The circuits also have reversible property. The performance of the proposed circuits from the viewpoint of optical cost, optical delay and switching energy is also discussed in this study.