Parametric Amplification and Wavelength Conversion in Dual-Core Highly Nonlinear Fibers

In this paper we experimentally show parametric amplification and wavelength conversion in a custom manufactured dual-core highly nonlinear fiber. On-off gain >10 dB and conversion efficiencies between - 1 and - 8.5 dB were measured for both cores. The estimated effective nonlinear parameter for the cores of the fiber are 6.6W(-1)km(-1) and 6.3W(-1)km(-1), while the zero-dispersion wavelength for the individual cores is shown to be relatively close from each other. Furthermore, complementary analytical and numerical results show that coupled cores fiber optical parametric amplifier offer the potential of wide-band gain even when they have significantly distinct zero-dispersion wavelengths.

Automated summary

In this paper, we experimentally demonstrate parametric amplification and wavelength conversion in a custom manufactured dual-core highly nonlinear fiber. The on-off gain exceeds 10 dB and the measured conversion efficiencies range from -1 dB to -8.5 dB for both cores. The estimated effective nonlinear parameters for the fiber cores are 6.6W(-1)km(-1) and 6.3W(-1)km(-1), with relatively close zero-dispersion wavelengths. Additionally, analytical and numerical results show that coupled cores fiber optical parametric amplifiers have the potential for wide-band gain even with significantly distinct zero-dispersion wavelengths.