Title :
Closed WKB formulas for weakly guiding optical fibers
Author :
Paiano, Giulio ; Pellicoro, Mario
Author_Institution :
Dipt. di Fisica, Univ. di Bari, Italy
fDate :
1/1/2003 12:00:00 AM
Abstract :
This paper proposes closed WKB formulas for cutoff frequencies and the propagation constant of weakly guiding optical fibers. For the sake of simplicity, only nondecreasing refractive profiles are taken into consideration. The formulas arise from an approximation of the WKB integral, which preserves the general validity requirements of the method.
Keywords :
Helmholtz equations; WKB calculations; approximation theory; eigenvalues and eigenfunctions; optical fibre theory; Helmholtz equation; WKB integral approximation; Wentzel-Kramers-Brillouin method; closed WKB formulas; cutoff frequencies; general validity requirements; nondecreasing refractive profiles; propagation constant; weakly guiding optical fibers; Cutoff frequency; Eigenvalues and eigenfunctions; Electromagnetic fields; Electromagnetic propagation; Helium; Integral equations; Optical fibers; Optical propagation; Optical refraction; Propagation constant;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2002.806324
