研究目的

To compare degenerate one- and three-mode PS parametric multicasting in terms of stability, phase manipulation, gain, and conversion efficiency, as well as noise performance.

研究成果

Dual-pump degenerate one- and three-mode PS architectures operated in the unsaturated regime were employed in a dispersion-engineered parametric mixer for signal multicasting. The experimental results of the three-mode operation demonstrate ultra-low noise performance over 5 multicasted copies and the lowest NF of 1 dB, a record low noise performance for wavelength multicasting. A 2-dB BER sensitivity improvement is also observed between three- and one-mode multicasting, confirming the superiority of the multi-mode PS architecture.

研究不足

The experimental architecture is inherently an interferometer, subject to ambient induced phase fluctuations, leading to an unstable output spectrum for the PS multicasting. Additionally, the SBS and Raman scattering were neglected in simulations, while the pumps and signal(s) were assumed as co-polarized for maximum mixing efficiency.