Accurate Control of Surface Modes in a Hollow-Core Photonic Bandgap Fiber

Yong You,Yan-Ge Liu,Zhi Wang,Huiyi Guo,Yundong Hao

doi:10.1109/jphot.2021.3139640

Abstract

Accurate Control of Surface Modes in a Hollow-Core Photonic Bandgap Fiber

Highlights

In recent years, topological edge states in photonic systems have attracted considerable attention owing to their robustness to scattering and defects as well as reliable edge transmission [1], [2]
The detailed summary of surface modes (SMs) in this study will deepen our understanding of SMs and have reference significance for the actual drawing of hollow-core photonic bandgap fiber (HC-PBF)
T/2 core wall thickness is still the most effective way to avoid SM interference, whether in 7-cell, 19-cell, or 37-cell HC-PBFs. Obtaining such a thin core wall in a large fiber core requires precise temperature and pressure control requirements, which is challenging in many cases

Summary

INTRODUCTION

Topological edge states in photonic systems have attracted considerable attention owing to their robustness to scattering and defects as well as reliable edge transmission [1], [2]. These studies have deepened our understanding of SMs. most studies are useful in providing practical guidance on how to realize SM-free wide bandwidth fibers, some studies are often inefficient and blind if there is no clear control over the characteristics of SMs. to have a clearer and in-depth understanding of HC-PBF, the coupling rule between SM and CM, as well as the differences between SMs, we believe that it is necessary to conduct a systematic study on SMs. In this study, SMs in a HC-PBF were studied separately to achieve precise mode control. This study provides a clear understanding of the coupling characteristics of SMs in HC-PBFs and inspires us to achieve CM control through SM coupling

SMS CLASSIFICATION AND COUPLING CHARACTERISTICS

COMPARISON OF SMS CHARACTERISTICS IN LARGE CORE HC-PBFS

PRACTICAL GUIDING SIGNIFICANCE

Findings

DISCUSSION AND CONCLUSION