Effect of span loss increase on the optically amplified communication system

Author

Otani, Tomohiro ; Goto, Koji ; Kawazawa, Toshio ; Abe, Haruo ; Tanaka, Masando

Author_Institution

KDD Submarine Cable Syst. Dept., Tokyo, Japan

Volume

15

Issue

5

fYear

1997

fDate

5/1/1997 12:00:00 AM

Firstpage

737

Lastpage

742

Abstract

In optical fiber communication systems using Er³⁺ doped fiber amplifiers operating in their compression region, the optical signal power is known to be restored by the self-healing effect in the case of the span loss increase. In this paper, the influence of such excess loss on the system transmission performance is experimentally and numerically investigated from the point of view of the system signal-to-noise ratio and Q-factor. The results show that the system SNR is not completely recovered although the signal power is restored after several stages of amplifiers and that there exists the residual degradation of the system SNR. Through a 5.3 Gb/s data transmission experiment over 3000 km, the transmission penalty due to the excess span loss is confirmed to be decided by this residual degradation of the system SNR. The obtained results can be used for system design and a plan of maintenance for the optical amplifier communication system

Keywords

fibre lasers; optical fibre communication; optical fibre losses; optical noise; optical repeaters; 3000 km; 5.3 Gbit/s; Er³⁺ doped fiber amplifiers; Q-factor; amplifier stages; compression region; excess loss; optical fiber communication systems; optical signal power; optically amplified communication system; plan of maintenance; residual degradation; self-healing effect; signal power; signal-to-noise ratio; span loss increase; system SNR; system transmission performance; transmission penalty; Degradation; Doped fiber amplifiers; Erbium; Optical amplifiers; Optical fiber communication; Optical losses; Power system restoration; Propagation losses; Signal restoration; Stimulated emission;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.580806

Filename

580806