Extraction of optical Bloch modes in a photonic-crystal waveguide
Optics
2012-09-10 v2
Abstract
We perform phase-sensitive near-field scanning optical microscopy on photonic-crystal waveguides. The observed intricate field patterns are analyzed by spatial Fourier transformations, revealing several guided TE- and TM-like modes. Using the reconstruction algorithm proposed by Ha, et al. (Opt. Lett. 34 (2009)), we decompose the measured two-dimensional field pattern in a superposition of propagating Bloch modes. This opens new possibilities to study specific modes in near-field measurements. We apply the method to study the transverse behavior of a guided TE-like mode, where the mode extends deeper in the surrounding photonic crystal when the band edge is approached.
Keywords
Cite
@article{arxiv.1110.5539,
title = {Extraction of optical Bloch modes in a photonic-crystal waveguide},
author = {S. R. Huisman and G. Ctistis and S. Stobbe and J. L. Herek and P. Lodahl and W. L. Vos and P. W. H. Pinkse},
journal= {arXiv preprint arXiv:1110.5539},
year = {2012}
}