Numerical Modeling of S-Band EDFA Based on Distributed Fiber Loss

Author

Vincetti, Luca ; Foroni, Matteo ; Poli, Federica ; Maini, Moreno ; Cucinotta, Annamaria ; Selleri, Stefano ; Zoboli, Maurizio

Author_Institution

Dipt. di Eng. dell Inf., Univ. of Modena & Reggio Emilia, Modena

Volume

26

Issue

14

fYear

2008

fDate

7/15/2008 12:00:00 AM

Firstpage

2168

Lastpage

2174

Abstract

A numerical model for the analysis and design of S-band erbium-doped fiber amplifiers has been developed. The model is able to accurately predict the amplifier performances by taking into account the amplified spontaneous emission suppression due to the bending, as well as leakage losses of the fiber used as active medium. The model has been validated by comparing numerical and experimental data of bending loss, amplifier gain, and noise figure of an S-band optical amplifier based on a depressed-cladding erbium-doped fiber. A good agreement has been verified by varying fiber bending radius, input signal power, and wavelength. The model has been then applied to the optimization of the amplifier performances for wavelength-division multiplexer applications. The numerical results show that 20-25 dB gain can be achieved over a 25-30 nm range centered in a different part of the S-band from 1460 to 1525 nm, just by changing the bending radius and the length of a depressed-cladding fiber.

Keywords

erbium; finite element analysis; laser noise; optical fibre amplifiers; optical fibre cladding; optical fibre losses; optimisation; wavelength division multiplexing; JkJk:Er; S-band erbium-doped fiber amplifiers; amplifier gain; bending loss; depressed-cladding fiber; distributed fiber loss; fiber bending radius; finite element method; leakage losses; noise figure; optimization; wavelength 1460 nm to 1525 nm; wavelength-division multiplexer applications; Erbium-doped fiber amplifier; Noise figure; Numerical models; Optical fiber amplifiers; Optical fiber losses; Optical noise; Predictive models; Semiconductor optical amplifiers; Spontaneous emission; Stimulated emission; Bending loss; S-band amplification; depressed-cladding fiber; finite element method; optical fiber amplifiers;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2008.923221

Filename

4610008