Light Field Distributions in One-dimensional Photonic Crystal Fibers

Details Light Field Distributions in One-dimensional Photonic Crystal Fibers Light Field Distributions in One-dimensional Photonic Crystal Fibers

2010-07-16

arxiv.org/abs/1007.2839v2

Journal of the Optical Society of America B 26, 603-609 (2009)

Physics

General Physics

12 pages, an appendix is provided for reference

Scientific paper

10.1364/JOSAB.26.000603

It is shown in this paper that the light field distribution in a band gap within periodic structures for one-dimensional photonic crystal fibers is described by a decaying factor multiplied by a periodical function that has the same period length as the one of the medium or has double the period length of the medium, depending on the sign of the trace of eigen value matrix. This fundamental property is applicable to any 1D planar periodic structures, no matter how many layers a unit cell has, what the contrast of refractive indices is, and whether the dielectric parameters in individual layers are homogeneous or inhomogeneous; it plays a significant role in understanding of numerical results in a number of previously published research works. It is also shown that, similar to the refractive index guidance in conventional optical fibers, the photonic band gap guidance is also a form of total internal reflection.

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