Modes in divergent parabolic graded-index optical fibers

Author

Lachance, Richard L. ; Bélanger, Pierre-André

Author_Institution

Dept. de Phys., Laval Univ., Sainte-Foy, Que., Canada

Volume

9

Issue

11

fYear

1991

fDate

11/1/1991 12:00:00 AM

Firstpage

1425

Lastpage

1430

Abstract

The authors discuss an optical fiber characterized by a core of divergent parabolic graded-index profile. A general formulation is developed to study this fiber as well as other types, including standard step-index and convergent parabolic profiles. An analytical approach to solve the basic differential propagation equation is developed. The solution takes the form of a summation of Bessel functions. An algorithm is programmed and simulations are carried out. Main characteristics of divergent profile fibers, such as propagation constant, dispersion, and power distribution, are presented and compared to those of standard fibers. It is found that the principal mode LP₀₁ exhibits a flat top distribution that better fills core´s fiber, suggesting possible applications for laser fibers and amplifiers

Keywords

gradient index optics; optical dispersion; optical fibres; Bessel functions; algorithm; basic differential propagation equation; convergent parabolic profiles; dispersion; divergent parabolic graded-index optical fibers; flat top distribution; general formulation; power distribution; principal mode; propagation constant; Differential equations; Fiber lasers; Laser applications; Laser modes; Optical fiber dispersion; Optical fibers; Optical propagation; Power distribution; Propagation constant; Standards development;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.97628

Filename

97628