Work

Design and Analysis of Z-Trench-Assisted 9-LP-Mode Fiber With Low Differential Modal Group Delay and High Spatial Density

Year: 2023

Type: article

Abstract: We present a novel Z-trench-assisted (Z-TA) graded index 9-LP-mode fiber that significantly suppresses the maximum absolute differential modal group delay (Max |DMGD|) while obtaining a high normalized spatial density (NSD). The finite element method (FEM) is applied for numerical simulations, and the results show that the Max |DMGD| is 18.9 ps/km at 1550 nm. To the best of our knowledge, it is improved by more than 30% compared to that of the theoretical optimal value in TA structure so far. Furthermore, the NSD of the proposed fiber can reach 44.64 at 1550 nm. Over the C band, the Z-TA 9-LP-mode fiber exhibits Max |DMGD|Aeff) > 100 μm2and low bending loss. In addition, the Z-TA structure is able to maintain relatively low degradation of DMGD characteristics when strict manufacturing variabilities are considered.

Source: IEEE Access

DOI: 10.1109/access.2023.3301142

Authors: Yuheng Xie, Jianjun Tang, Qi Zhao, Lipeng Feng, Tianqi Dou

Institutions: China Telecom (China), China Telecom

Language: English

Topic: Optical Network Technologies

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,950

OpenAlex ID: W4385486172