Improved robustness in long-haul lightwave all-amplifier systems

Author

Habbab, I.M.I.

Author_Institution

AT&T Bell Lab., Holmdel, NJ, USA

Volume

11

Issue

9

fYear

1993

fDate

9/1/1993 12:00:00 AM

Firstpage

1470

Lastpage

1477

Abstract

The issue of system robustness of a long-haul lightwave communication system that uses erbium-doped fiber amplifiers to periodically boost the signal power level is addressed. The signal power level at the output of each amplifier is the focus. It is found that this power level is the same throughout the system, and that it depends only on the amplifiers´ gain characteristic and the span loss and is independent of the launched power at the input to the chain, provided it is close to the design value. As such, the systemwide signal power level is sensitive to systematic design and/or manufacturing errors. The sensitivity of the signal power level to errors in amplifier design and span loss is studied, and a simple technique is proposed that reduces this sensitivity, thus making the system more robust

Keywords

erbium; errors; fibre lasers; optical communication equipment; optical links; sensitivity; EDFA; Er-doped fibre amplifiers; amplifier design; design value; erbium-doped fiber amplifiers; gain characteristic; launched power; lightwave communication system; long-haul lightwave all-amplifier systems; manufacturing errors; sensitivity; signal power level; span loss; system robustness; systematic design; Erbium-doped fiber amplifier; Erbium-doped fiber lasers; Extraterrestrial measurements; High power amplifiers; Manufacturing; Optical fiber theory; Power amplifiers; Robustness; Signal design; Transmitters;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.241937

Filename

241937