Author/Authors :
افشار بختيار، ليلي نويسنده Arak branch, Islamic Azad University, Arak, Iran Ashraf-Bakhtiar , leily , يعقوبي، الهام نويسنده Islamic Azad University, Science and Research branch, Tehran, Iran Yaghoubi, Elham , عدمي، اميرحسين نويسنده Science and Research branch, Islamic Azad University, Tehran, Iran Adami, Amirhossein , حميدي، سيده مهري نويسنده Laser and Plasma Research institute, Shahid Beheshti University, G. C. Tehran, Iran Hamidi, SeyyedehMehri , حسين زاده ، مهدي نويسنده ,
Abstract :
In this paper a novel design of all-optical half-subtractor based on nonlinear directional coupler is proposed. By using four waveguides and appropriately adjusting the refractive indices and selecting the proper length of waveguides, half-subtractor function can be obtained. The operation of this function is simulated by RSoft CAD-Layout (BeamPROP) simulator. The simulation results confirm the all-optical half-subtractor circuit without any optoelectronic conversions.
