Work

Group Velocity Dispersion Control by Suspended- Core Soft-glass Fiber Filled With Carbon Disulfide

Year: 2025

Type: article

Abstract: An enhanced group velocity dispersion (GVD) control with suspended core fiber (SCF) has been investigated using numerical simulation based on the finite element method. It requires an SCF made of lead-bismuth-gallium-oxide glass with three air holes filled with carbon disulfide (CS2). Unlike unfilled fibers, CS2-filled SCFs can achieve small slopes of the effective refractive index curves using the fundamental modes, resulting in flat group velocity dispersion in the low group velocity region. We also found that the ratio between the width of the bridge and the core radius can affect the shift of the zero-dispersion wavelength. The proposed SCFs show excellent performance in achieving low anomalous GVD, which can offer higher efficiency in supercontinuum spectral flattening. Additionally, the structures with small normal GVD values are promising candidates for pulse stretching due to the exact balance between nonlinear effects and dispersion.

Source: Dalat University Journal of Science

DOI: 10.37569/dalatuniversity.15.3s.1569(2025)

Authors: Tran Bao Tran Le, Van Ben Chu, Van Trong Dang, Van Lanh Chu

Institutions: University of Khanh Hoa, Vinh University, Posts and Telecommunications Institute of Technology, Nha Trang University

Language: English

Topic: Photonic Crystal and Fiber Optics

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funders: National Foundation for Science and Technology Development, Tập đoàn Vingroup - Công ty CP, Quỹ Đổi mới sáng tạo Vingroup

Awards: Nghiên cứu sợi tinh thể quang tử đa mode với các mạng khác nhau ứng dụng tạo nguồn ánh sáng siêu liên tục, G7204550233