Abstract
Bandgap formation in pixelated Bragg fibers is explained by using the plane wave expansion method. A generalization of the half-wave stack condition is proposed and exploited by using a pixelated ring heterostructuration. Such fibers open up the way to designing new single-mode large mode area (LMA) fibers. A single-mode LMA fiber with a core diameter of 50 μm that is composed of only two rings of high-index rods is used as an example.
© 2015 Optical Society of America
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