All-optical high speed NOR gate based on two photon absorption in silicon wire waveguides

Abstract

Abstract:We demonstrate for the first time an all-optical logic NOR gate in submicron size silicon wire waveguides. High speed operation at equivalent 80Gbps data rate was achieved using pump induced non-degenerate two-photon absorption inside the waveguides. The device requires low pulse energy (few pJ) for logic gate operation.

Semiconductor Optical Amplifier Based Frequency Encoded Logic Gates Exploiting Nonlinear Polarization Rotation Only

“…[1][2][3][4][5][6][7][8][9][10] They are mainly based on di®erence frequency generation, two-photon absorption (TPA), cross gain modulation (XGM), four wave mixing (FWM), nonlinear polarization rotation (NPR), etc. Semiconductor optical ampli¯er (SOA) is an important optical device having potential application in optoelectronics due to various reasons.…”