Modeling large air fraction holey optical fibers

We develop a modal decomposition approach to solve the full vector wave equ ation for holey optical fibers (HF). This model can be used to explore the modal properties of a wide range of NF's, including those with large air ho les. The optical properties of HF can be tailored via the arrangement of th e air holes, and this flexibility leads to a wide range of practical applic ations.