Abstract
There has been considerable recent success in fabricating large-core
highly multimoded polymer air-clad fibers suspended by thin bridges. These
thin bridges are constructed by surrounding a solid core preform by many capillary
tubes, the adjacent walls of the capillary tubes fuse together and form bridges
when the preform is drawn to fiber. Recently a different cladding technique
has been demonstrated experimentally where the interstitial holes between
capillary walls do not completely collapse and leave a gap at the core or
cladding side of the bridge forming a ‘Y’-shape.This paper investigates this ‘Y’-bridge microstructured
cladding and the potential for increased numerical aperture of different geometries
of the bridge.
© 2009 IEEE
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