Fatemeh Davoodi
Nosrat Granpayeh

In this paper we describe the performances of different kinds of all-optical logic gates reported up to now. We introduce all-optical logic gates based on semiconductor optical amplifiers such as ultrahigh speed logic gates exploiting four-wave mixing, cross gain modulation, cross phase modulation, and cross polarization modulation. We demonstrate the performances of all-optical logic gates using delayed interferometers, such as all-optical gates based on Mach-Zehnder and nonlinear loop mirror interferometers. We describe the performances of semiconductor based microring resonator logic gates, such as all-optical logic gates based on nonlinear photonic crystal, couplers and waveguides, lasers and cavities. We illustrate optical gates based on electro-absorption modulator, nonlinear fibers, nanoslabs, and optical thyristor. We introduce molecular logic gates and logic gates based on thermal lens effects.

Optical logic Gates, Photonic Crystals, molecular logic gates, Thermal Lens effect, MEMS