Open AccessHighly nonlinear dispersion-flattened photonic crystal fibers for supercontinuum generation in a telecommunication window
Author(s) -
Kunimasa Saitoh,
Masanori Koshiba
Publication year - 2004
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.12.002027
Subject(s) - supercontinuum , photonic crystal fiber , optics , materials science , zero dispersion wavelength , dispersion (optics) , optical fiber , dispersion shifted fiber , self phase modulation , optoelectronics , nonlinear optics , physics , laser , fiber optic sensor
We propose a new structure of highly nonlinear dispersion-flattened (HNDF) photonic crystal fiber (PCF) with nonlinear coefficient as large as 30 W(-1)km(-1) at 1.55 microm designed by varying the diameters of the air-hole rings along the fiber radius. This innovative HNDF-PCF has a unique effective-index profile that can offer not only a large nonlinear coefficient but also flat dispersion slope and low leakage losses. It is shown through numerical results that the novel microstructured optical fiber with small normal group-velocity dispersion and nearly zero dispersion slope offers the possibility of efficient supercontinuum generation in the telecommunication window using a few ps pulses.