Design of strain-free-fiber with nonuniform dopant concentration for stimulated Brillouin scattering suppression

Author

Ohashi, Masaharu ; Tateda, Mitsuhiro

Author_Institution

R&D Center, NTT Telecommun. Field Syst., Ibaraki, Japan

Volume

11

Issue

12

fYear

1993

fDate

12/1/1993 12:00:00 AM

Firstpage

1941

Lastpage

1945

Abstract

The loss and dispersion properties of fibers with a nonuniform dopant concentration along their length are investigated theoretically and simple equations are obtained for loss and dispersion estimation. These equations are used to discuss fiber properties and a design procedure by which to achieve SBS suppression. The loss increases by 0.02-0.03 dB/km/% and the dispersion decreases by -2.4 ps/km/nm/% as the relative-index change due to dopant increases longitudinally. It is found that a large change in the dopant concentration along a fiber is effective in suppressing SBS

Keywords

optical dispersion; optical fibre theory; optical fibres; optical losses; stimulated Brillouin scattering; design procedure; dispersion properties; fiber properties; loss; nonuniform dopant concentration; relative-index change; simple equations; stimulated Brillouin scattering suppression; strain-free-fiber; Brillouin scattering; Equations; Fiber nonlinear optics; Optical fiber dispersion; Optical fibers; Optical mixing; Optical modulation; Optical scattering; Stimulated emission; Stress;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.257954

Filename

257954