Abstract
Light scattering patterns are commonly used in industry
to assess fiber quality. In this work, scattering patterns
of Bragg fibers are studied. Optical fibers are
coated with alternating layers of Silicon Nitride and
Silica using Plasma Enhanced Chemical Vapor Deposition.
A laser beam incident perpendicular to the fiber
axis scatters off creating patterns distinct from that of
uncoated fibers which exhibit continuous front lobe. Effect
of variation in layer properties, polarization, wavelength
and fiber symmetry is observed in the patterns.
Anomalous suppression and enhancement in angular
scattering pattern is explained through a scattering angle
diagram. Features in the pattern are mapped to reflectance
of the Bragg stack and it is found that a stopband
creates the anomalous features in the scattering.
Design and analysis of hollow core Bragg fibers array for space division multiplexing
