Improved air-silica photonic crystal with a triangular airhole arrangement for hollow-core photonic bandgap fiber design.
We propose an improved photonic crystal (PC) cladding design for existing air-guiding photonic bandgap (PBG) fibers whose cladding airholes are arranged in a triangular lattice pattern. By increasing the sizes of concentrated silica regions in the cladding PC, we can have a larger degree of freedom in controlling the cladding bandgap regions. We predict that a fiber made from this type of cladding would perform better in terms of the PBG-guiding wavelength range, radiation loss owing to finite cladding size, and the ability to avoid surface mode problems.
Yan
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Netwvork Technology Research Centre, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553. yanmin@pmail.ntu.edu.sg
Shum
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