Fig. 1: HCPCF core surface characterization.
From: Hollow-core fibers with reduced surface roughness and ultralow loss in the short-wavelength range
a Cross-section of an SR-TL HCPCF. b Typical surface profiles for a fiber drawn by using typical HCPCF fabrication methods measured by AFM (top plot) and optical profilometry (bottom plot). c Typical AFM measurement result for a fiber drawn by using typical HCPCF fabrication methods. d PSD plot accounted from optical profilometry and AFM measurements and PSD trend lines. AFM atomic force microscopy, PSD power spectral density.
