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physics.optics2026
System-Level Limits of Higher-Order QAM in Hollow-Core Fiber Systems
Md Ghulam Saber, Zhiping Jiang
Hollow-core fiber (HCF) is widely expected to enable higher-order quadrature amplitude modulation (QAM) because of its near-vacuum Kerr nonlinearity and higher launch power. We dev…
physics.optics2026
Beyond Silica Assumptions: Optical Network Design in the Hollow-Core Era
Md Ghulam Saber, Zhiping Jiang
Hollow-core fiber (HCF) is often presented as a modestly improved transmission medium that can be inserted into networks originally designed for solid-core silica. We argue instead…
physics.optics2026
Hollow-Core Fiber in Direct-Detection Optical Networks: Technology Readiness, Deployment Drivers, and Adoption Outlook
Md Ghulam Saber, Zhiping Jiang
This paper presents a comprehensive analysis of hollow-core fiber (HCF) for intensity-modulation and direct-detection (IMDD) optical networks, covering fiber-level physics, system-…