Abstract
The modal cutoff of square-lattice photonic crystal fibers with a finite number of air-hole rings has been accurately investigated to our knowledge for the first time. By analyzing the leaky behavior of the second-order mode, we have obtained a phase diagram that describes the regions of single-mode and multimode operation as well as the endlessly single-mode regime. Furthermore, starting from these results, we have obtained the cutoff normalized frequency according to two different formulations of the V parameter previously adopted for fibers with a triangular lattice. A final comparison of the cutoff properties of fibers characterized by a square lattice and a triangular lattice has been carried out.
© 2005 Optical Society of America
Full Article | PDF ArticleMore Like This
A. H. Bouk, A. Cucinotta, F. Poli, and S. Selleri
Opt. Express 12(5) 941-946 (2004)
N. A. Mortensen, M. D. Nielsen, J. R. Folkenberg, A. Petersson, and H. R. Simonsen
Opt. Lett. 28(6) 393-395 (2003)
Niels Asger Mortensen, Jacob Riis Folkenberg, Martin D. Nielsen, and Kim P. Hansen
Opt. Lett. 28(20) 1879-1881 (2003)