Abstract
A new design of multicore photonic crystal fibers (PCFs) is proposed
and investigated through full-vectorial finite-element method and finite-element
beam propagation method. The fiber design comprises four identical cores surrounding
a central core. The optical power launched into the central core is equally
divided into other neighboring four cores with a 25% of coupling ratio. The
coupled-mode analysis is also carried out to understand the supermode patterns
and the coupling characteristics. Through numerical simulations, it is demonstrated
that the optical power can be divided equally in a 5.8-mm-long multicore PCF.
The power coupling characteristics obtained through coupled-mode analysis
are in very good agreement with those calculated from beam propagation method
solver.
© 2009 IEEE
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