Optimizing of Raman Gain and Bandwidth for Dual Pump Fiber Optical Parametric Amplifiers Based on Four-Wave Mixing

摘要

Fiber optical parametric amplifiers (FOPAs) are very important for future fiber optical amplifiers because of their high gains, broad gain bandwidth and relatively low noise figure. Recently, Fiber-optic parametric amplifiers (FOPAs), which are based on Four-Wave Mixing (FWM) occurring inside optical fiber, have got lots of attentions due to its wide gain bandwidth, flat gain spectrum and low noise because they can provide broadband amplification and can thus replace erbium-doped fiber amplifier used commonly for signal amplification. In this paper, we proposed an efficient dual pump optical parametric amplifiers which enjoy the following new features: (1) providing a uniform gain over a relatively wide bandwidth when they are pumped at two wavelengths located on each side of Zero Dispersion Wave- Length (ZDWL), (2) Maximizing repeater spacing and (3) providing broadband and high gain in high speed long-haul wavelength division multiplexing (WDM) transmission. Our results show that the maximum gain is 61.6454 dB and broadband is 350 nm compared with previous works which the gain is computed over the spectral optical wavelengths (1.35 um $ A signal s 1.75 um).