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Numerical verification of degeneracy in hexagonal photonic crystal fibers

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2 Author(s)
Koshiba, M. ; Div. of Electron. & Inf. Eng., Hokkaido Univ., Sapporo, Japan ; Saitoh, K.

Modal birefringences in photonic crystal fibers with six air holes symmetrically arranged around the core region and with multiple air holes in a hexagonal lattice are numerically investigated in detail. It is confirmed from the computed results obtained by a full-vector finite element method that both the hexagonal holey fibers are not birefringent, namely, the two fundamental modes are degenerate.

Published in:

Photonics Technology Letters, IEEE  (Volume:13 ,  Issue: 12 )