Table 1 Parameters of fabricated AR-HCF

From: All-fiber highly efficient delivery of 2 kW laser over 2.45 km hollow-core fiber

Dc (μm)

D (μm)

d (μm)

dn (μm)

D/Dc

d/D

dn/d

28

31

23

10

1.1

0.74

0.43