All Optical High Speed Multiplexer Circuit for Verification of Proposed Gates

Abstract

An all optical communication is fast and reliable for next generation information carrying systems. For successful operation of fast data over flexible transmission line is only possible by all optical multiplexer and can serve for network. A 60 Gbps all optical multiplexer using cheap components has been realized and also tested on different speeds of input data streams. For integral and flexible multiplexer, optical semiconductor-based MZI switch taken into consideration. MZI-SOA is used to generate two logical gates outputs such as (AND)(XOR) gate. Multiplexer working is based on SOA nonlinearity properties and optical coupler. XOR logic gate contingent on cross-phase modulation in amplifier and logic AND for four-wave mixing is obtained from cross port and bar port respectively. Simulation is performed and multiplexer is tested for different launched power in tree architecture. System performance indicates that it can work for high speed (60 Gbps) and different data entities.

Enhancing confidentiality protection for ZCZ-OCDMA network using line selection and wavelength conversion based on SOA

“…Enhancing the level of ZCZ-OCDMA system confidentiality and security against eavesdropping is an important issue. For this purpose, several architectures can be exist in which two principals methods can be used such as wavelength conversion (WC) technique using SOA [32] and optical line selector (LS) using SOA [33,34].…”

“…Line Selector also referred as multiplexer is a combinational logic device that selects only one signal from 2 N input data signals depending on the N control signals [34]. Figure 3 shows the block diagram of a 2:1 (2 to 1) LS with two inputs (A, B) and one control input C (see its truth table; Table 1).…”