Design and fabrication of all-normal dispersion nanohole suspended-core fibers

摘要

Suspended-core fibers (SCFs) with a submicron diameter hole in the core offer interesting new possibilities in dispersion management, light confinement, and nonlinear applications. We discuss the geometric demands and options of fused silica-based nanohole SCFs suitable for all-normal dispersion (ANDi) and compare them to the possibilities provided by photonic crystal fibers (PCFs). We show that nanohole SCFs extend the options PCFs provide, enabling ANDi further into the near infrared. In addition, fabrication conditions are evaluated, a reliable fabrication scheme is outlined, and ANDi nanohole SCFs are demonstrated. (C) 2019 Optical Society of America