Impact of mode-area dispersion on nonlinear pulse propagation in gas-filled anti-resonant hollow-core fiber

• Main Authors: Wan, Ying, Md Imran Hasan, Chang, Wonkeun
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2022
• Subjects: Engineering::Electrical and electronic engineering; Anti-Resonant Hollow-Core Fiber; Nonlinear Optics
• Online Access: https://hdl.handle.net/10356/157867
• Institution: Nanyang Technological University

We numerically investigate the effect of mode-area dispersion in a tubular-type anti-resonant hollow-core fiber by using a modified generalized nonlinear Schrödinger equation that takes into account the wavelength-dependent mode area in its nonlinear term. The pulse evolution dynamics with and without the effect of mode-area dispersion are compared and analyzed. We show that strong dispersion of the mode area in the proximity of the cladding wall thickness-induced resonances has a significant impact on the soliton pulse propagation, resulting in considerable changes in the conversion efficiencies in nonlinear frequency mixing processes. The differences become more prominent when the pump has higher energy and is nearer to a resonance. Hence, the mode-area dispersion must be accounted for when modeling such a case.