Investigation of degenerate dual-pump phase sensitive amplifier using multi-wave model

TL;DR

This paper thoroughly investigates a degenerate dual-pump phase sensitive amplifier using a multi-wave model that accounts for high-order waves and four-wave mixing, leading to more accurate gain spectra and optimized pump configurations.

Contribution

It introduces a multi-wave model for dual-pump PSA that improves accuracy over traditional models and enables precise gain spectrum optimization through dispersion and pump wavelength control.

Findings

More accurate phase-sensitive gain spectra obtained

Optimal pump configurations identified for enhanced gain

Relation between dispersion slope and gain spectra established

Abstract

Operation of a degenerate dual-pump phase sensitive amplifier (PSA) is thoroughly numerically investigated using a multi-wave model, taking into account high-order waves associated with undesired four-wave mixing (FWM) processes. More accurate phase-sensitive signal gain spectra are obtained compared to the conventional 3-wave model, leading to the precise optimization of the pump configuration in a dual-pump PSA. The signal gain spectra, as well as the phase sensitivity, are obtained and interpreted by investigating the dominant FWM processes in terms of corresponding phase matching. Moreover, the relation between dispersion slope and gain spectra is revealed, permitting the application-oriented arbitrary tailoring of the gain spectra by manipulating the dispersion profile and pump wavelength allocation.