Title :
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
fDate :
12/1/1993 12:00:00 AM
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;
Journal_Title :
Lightwave Technology, Journal of
