Title :
Proposal for Highly Nonlinear Dispersion-Flattened Octagonal Photonic Crystal Fibers
Author :
Razzak, S. M Abdur ; Namihira, Yoshinori
Author_Institution :
Ryukyus Univ., Okinawa
Abstract :
A highly nonlinear photonic crystal fiber (HNL-PCF) based on an octagonal structure with isosceles triangular-latticed cladding is proposed for the telecommunication window. The finite-difference method with anisotropic perfectly matched boundary layer is used to investigate the guiding properties. It is demonstrated that it is possible to design a simple HNL low-loss dispersion-flattened PCF with a nonlinear coefficient of the order 27 W-1km-1 at a 1.55-mum wavelength. According to simulation, ultraflattened dispersion of 0 plusmn 0.5 ps/nm/km is obtained in a 1.46- to 1.66-mum wavelength with low confinement losses less than 0.06 dB/km in the entire band of interest.
Keywords :
finite difference methods; nonlinear optics; optical design techniques; optical fibre cladding; optical fibre communication; optical fibre dispersion; optical fibre losses; photonic crystals; anisotropic perfectly matched boundary layer; confinement losses; finite-difference method; highly nonlinear photonic crystal fiber; isosceles triangular-latticed cladding; low-loss dispersion-flattened photonic crystal fiber; nonlinear coefficient; octagonal structure; telecommunication window; ultraflattened dispersion; wavelength 1.46 mum to 1.66 mum; Chromatic dispersion; Fiber nonlinear optics; Finite difference methods; Nonlinear optics; Optical losses; Optical wavelength conversion; Photonic crystal fibers; Proposals; Stimulated emission; Supercontinuum generation; Chromatic dispersion; photonic crystal fiber (PCF); ultraflattened dispersion; zero dispersion;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.912986
