Open AccessNon-hexagonal Large-Pitch Fibers for enhanced mode discrimination
Author(s) -
Fabian Stutzki,
Florian Jansen,
César Jáuregui,
Jens Limpert,
Andreas Tünnermann
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.012081
Subject(s) - photonic crystal fiber , materials science , optics , mode field diameter , hexagonal crystal system , mode (computer interface) , core (optical fiber) , fiber , optical fiber , plastic optical fiber , multi mode optical fiber , physics , computer science , composite material , chemistry , operating system , crystallography
Photonic-Crystal Fibers (PCF) are among the most promising concepts to achieve large mode field areas suitable for the reduction of nonlinearities in fibers. Differential mode propagation loss is the cornerstone of effective single-mode behavior in passive and core-pumped active PCFs. In this work, we explore non-hexagonal PCF designs with increased mode discrimination in comparison to the classical hexagonal PCF designs. It is shown that a pentagonal design can increase the mode discrimination and, simultaneously, also improve the beam quality of Large-Pitch Fibers with mode field diameters well beyond 100 µm.