Small-core photonic crystal fibers with weakly disordered air-hole claddings

Details Small-core photonic crystal fibers with weakly disordered air-hole claddings Small-core photonic crystal fibers with weakly disordered air-hole claddings

2003-11-21

arxiv.org/abs/physics/0311106v1

J. Opt. A: Pure Appl. Opt. 6, 221 (2004)

Physics

Optics

6 pages including 4 figures. To appear in J. Opt. A: Pure Appl. Opt

Scientific paper

10.1088/1464-4258/6/2/011

Motivated by recent experimental work by Folkenberg et al. we consider the effect of weak disorder in the air-hole lattice of small-core photonic crystal fibers. We find that the broken symmetry leads to higher-order modes which have generic intensity distributions resembling those found in standard fibers with elliptical cores. This explains why recently reported experimental higher-order mode profiles appear very different from those calculated numerically for ideal photonic crystal fibers with inversion and six-fold rotational symmetry. The splitting of the four higher-order modes into two groups fully correlates with the observation that these modes have different cut-offs.

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