Analysis of the Optimized Assist Beam for Semiconductor Optical Amplifier Based Four Wave Mixing Using Optisystem

摘要

The Conversion efficiency and the Optical Signal to Noise Ratio are the two Figure of Merits used to characterize the Four wave mixing process. They are used to study the impact of drive current, pump-signal detuning, input pump and signal powers on wavelength conversion process. In particular, the issue of optimum input pump and signal powers and range of assist bea m is studied. We investigated the conversion efficiency (CE) and optical signal to noise ratio (OSNR) properties of ASE-assisted FWM in Semiconductor optical amplifier and demonstrated that in the presence of high internal Amplified Stimulated Emission, the requirement on input optical powers for wavelength conversion is reduced from 10s of mWs to less than 1 mW. As a proof of concept 10 Gb/s wavelength converter is demonstrated. While ASE-enhanced nonlinear effects in Semiconductor optical amplifier do relax the requirements on input signal powers, Various researchers studied that the w avelength converter by Four wave mixing effect in a semiconductor optical amplifier typically has poor efficiency but there is one more method to obtain high conversion efficiency is that to maximize the current of SOA, and one more thing various researches also showed that by applying assist beam the CE and SNR can be improved so in this paper we have assigned the various values for assist beam wavelength ranging from 1200 nm to 1600 nm and proved that 1480 nm is the best one