Title :
Dispersion-flattened photonic crystal fiber with large effective area and low confinement loss
Author :
Matsui, Takashi ; Zhou, Jian ; Nakajima, Kazuhide ; Sankawa, Izumi
Author_Institution :
Nippon Telegraph & Telephone, NTT Corp., Ibaraki, Japan
Abstract :
A photonic crystal fiber (PCF) can realize a flat dispersion over a wide wavelength range that cannot be realized with a conventional single-mode fiber. However, the confinement loss tends to increase in a conventional dispersion-flattened PCF (DF-PCF) that has uniform air holes. In this paper, a novel PCF that has two cladding layers with different effective indices is proposed. The authors numerically show that the proposed PCF can achieve an ultralow dispersion variation of less than 0.8 ps/nm·km in all telecommunication bands, with both a large effective area greater than 100 μm2 and a low confinement loss less than 0.01 dB/km.
Keywords :
optical fibre cladding; optical fibre communication; optical fibre dispersion; optical fibre losses; photonic crystals; cladding layers; confinement loss; dispersion-flattened fiber; large-effective-area fiber; photonic crystal fiber; single-mode fiber; telecommunication bands; ultralow dispersion variation; uniform air holes; Fiber nonlinear optics; Optical attenuators; Optical fiber communication; Optical fiber dispersion; Optical fiber losses; Optical fiber networks; Optical losses; Optical mixing; Optical refraction; Photonic crystal fibers; Confinement loss; flattened dispersion; large effective area; optical fiber communication; photonic crystal fiber;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2005.858250
