Abstract
A unique multicorelike guidance was achieved in a microstructured optical fiber composed of a circular air hole at the center surrounded by a high-index triangular core. Unique spectral evolution of the degeneracy was theoretically investigated using a vectorial finite element method to find a threefold degeneracy in both the fundamental and the first excited modes in the visible range, which evolved to twofold degeneracy as the wavelength increased to IR. Experimental measurements also confirmed evolution of the modal intensity from three spatially isolated patterns confined to individual corners into a supermode combining the three corners.
© 2012 Optical Society of America
Full Article | PDF ArticleMore Like This
Woosung Ha, Sejin Lee, Jongki Kim, Yoonseob Jeong, Kyunghwan Oh, Jens Kobelke, Kay Schuster, Sonja Unger, Anka Schwuchow, and Jun Ki Kim
Opt. Express 18(20) 20918-20925 (2010)
M. J. Steel, T. P. White, C. Martijn de Sterke, R. C. McPhedran, and L. C. Botten
Opt. Lett. 26(8) 488-490 (2001)
Xin-ben Zhang, Xian Zhu, Xiang Chen, Hai-qing Li, Jing-gang Peng, Neng-li Dai, and Jin-yan Li
Opt. Express 20(18) 19799-19805 (2012)