Table 1 Sellmeier’s coefficients for core and cladding.

From: All-fiber few-mode interference for complex azimuthal pattern generation

Material

a

b

c

d

e

Cladding

1.30956

0.79618

0.01093

0.98716

100

Core

1.31809

0.80709

0.01056

0.98599

100