All-Optical 2R Regeneration Based on Similariton Generation in HNL-PCF for High Bit Rate Networks

This paper presents an advanced all-optical 2R regenerator based on optical similariton generation in a custom-designed highly nonlinear photonic crystal fiber (HNL-PCF) amplifier. The HNL-PCF is optimized for high nonlinearity and low dispersion, enabling efficient similariton formation. The proposed scheme suppresses ASE noise and restores signal integrity across data rates from 40 Gb/s to 160 Gb/s. Compared to recent 2R regenerators based on self-phase modulation (SPM), our system demonstrates superior performance, offering enhanced noise suppression and signal quality. Integrated into a high-speed optical link, it significantly improves signal quality, highlighting its potential for next-generation optical networks.