Title :
Alternative Gaussian spot size polynomial for use with doped fiber amplifiers
Author :
Whitley, Timothy J. ; Wyatt, Richard
Author_Institution :
British Telecom Res. Labs., Ipswich, UK
Abstract :
The validity of the usual Marcuse-Gaussian approximation for fiber modes is discussed in the context of doped fiber amplifiers and an proposed: omega /a=(0.616+1.66/V/sup 1.5/+0.987/V/sup 6/). The polynomial´s use is illustrated by extending the range of a simple Gaussian-based, numerical model of an erbium-doped fiber amplifier. Excellent agreement with a real-field-based model is demonstrated for practical fiber V values.<>
Keywords :
approximation theory; fibre lasers; optical fibre theory; polynomials; Gaussian spot size polynomial; Gaussian-based numerical model; Marcuse-Gaussian approximation; doped fiber amplifiers; fiber modes; Distributed amplifiers; Doped fiber amplifiers; Erbium-doped fiber amplifier; Gaussian approximation; Gaussian distribution; Gaussian processes; Integral equations; Numerical models; Polynomials; Power amplifiers;
Journal_Title :
Photonics Technology Letters, IEEE
