Title :
Confinement losses in air-guiding photonic bandgap fibers
Author :
Saitoh, Kunimasa ; Koshiba, Masanori
Author_Institution :
Graduate Sch. of Eng., Hokkaido Univ., Sapporo, Japan
Abstract :
The wavelength dependence and the structural dependence of confinement losses in air-guiding photonic bandgap fibers (PBGFs) are, for the first time, investigated by using a full-vector finite element method. It is confirmed from computed results that one of the main causes of transmission losses in air-guiding PBGFs is the confinement loss and that, even if using large air holes of diameter to pitch ratio of 0.9, at least twenty rings of air hole arrays are required in the cladding region to reduce the confinement loss to a level of 0.01 dB/km.
Keywords :
finite element analysis; optical arrays; optical fibre losses; photonic band gap; photonic crystals; air hole arrays; air hole diameter to pitch ratio; air-guiding photonic bandgap fibers; cladding region; confinement losses; full-vector finite element method; photonic crystal fiber; structural dependence; wavelength dependence; Anisotropic magnetoresistance; Finite element methods; Magnetic fields; Optical fiber losses; Optical losses; Photonic band gap; Photonic bandgap fibers; Photonic crystal fibers; Propagation losses; Wavelength conversion;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.806891
