Abstract
The impact of pump parameters on dual-pump (2-P) fiber optical parametric amplifier (FOPA) is investigated. The four-wave model of coupled amplitude equations with fiber losses and pump depletion are solved numerically for the calculation of the parametric gain. Simulation results indicate that an increase in pump powers does not only enhances the parametric gain but also flattening the amplification bandwidth. Moreover, separating the pumps wavelengths further from each other can also improve the flatness of the bandwidth. Besides that, the parametric gain flatness can be improved when the separation between the pump central wavelength and zero-dispersion wavelength is small. In essence, the optimal performance of 2-P FOPA can be achieved when the pump parameters are carefully tailored.
Highlights
Four-wave mixing (FWM) is a nonlinear effect which involves the parametric process, where a signal is amplified with the pump waves and the new wave name idler is generated
There are two types of Fiber optical parametric amplifier (FOPA), i.e. one-pump (1-P) FOPA and dual-pump (2-P) FOPA. Both types of FOPA are capable in providing adjustable gain spectra and center frequency, wavelength conversion, phase conjugation, pulse operation for signal processing and 0-dB noise figure [5]. These advantages of FOPA have surpassed the limitation of conventional amplifiers i.e. Raman amplifier (RA) and Erbium-doped fiber amplifier (EDFA), and become the interest of researchers to explore the potential of FOPA in exceeding the current limit of optical communication systems
The aim of this paper is to numerically investigate the effect of pump parameters such as wavelength and power, on the four-wave model of 2-P FOPA
Summary
Four-wave mixing (FWM) is a nonlinear effect which involves the parametric process, where a signal is amplified with the pump waves and the new wave name idler is generated. Both types of FOPA are capable in providing adjustable gain spectra and center frequency, wavelength conversion, phase conjugation, pulse operation for signal processing and 0-dB noise figure [5] These advantages of FOPA have surpassed the limitation of conventional amplifiers i.e. Raman amplifier (RA) and Erbium-doped fiber amplifier (EDFA), and become the interest of researchers to explore the potential of FOPA in exceeding the current limit of optical communication systems. A research conducted in [8] successfully verified that the amount of power for both pumps is crucial in determining the parametric gain of 2-P FOPA This simulation work concentrate on four-wave model of FWM which is known as non-degenerate FWM.
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