3 years ago

The effect of polarization on the propagation distance of leaky guided modes.

Nimrod Moiseyev, Adi Pick

We find that transverse-magnetic (TM) leaky modes can propagate further than transverse electric (TE) modes in real-index dielectric waveguides. We compute the density of states and show that while the TE spectrum contains only overlapping resonances, the TM spectrum typically contains several isolated peaks. By transforming the TM equation into a Schr\"{o}dinger-type equation, we show that these isolated peaks arise due to delta-function barriers at the core-cladding interface. Our theory is useful for a range of applications, including filtering TM modes from initially unpolarized light and transferring information between distant waveguides.

Publisher URL: http://arxiv.org/abs/1801.09959

DOI: arXiv:1801.09959v1

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