Ultralong dispersion-shifted erbium-doped fiber amplifier and its application to soliton transmission

Author

Nakazawa, Masataka ; Kimura, Yasuo ; Suzuki, Kazunori

Author_Institution

NTT Transmission Syst. Labs., Ibaraki, Japan

Volume

26

Issue

12

fYear

1990

fDate

12/1/1990 12:00:00 AM

Firstpage

2103

Lastpage

2108

Abstract

Distributed, dispersion-shifted erbium-doped fiber amplifiers with doping concentrations as low as 0.1-0.5 p.p.m. (0.1-0.5×10^-4 wt.%) were fabricated and their grain characteristics studied for the purpose of soliton amplification. A 9.4-km dual-shape-core-type amplifier with a 0.5-p.p.m. concentration had a gain of more than 20 dB at 1.535 μm and 10 dB at 1.552 μm with a forward pumping configuration, and it could successfully amplify and transmit a 20-ps soliton pulse train at a 2.5-GHz repetition rate. The soliton transmission characteristics of an 18.2 km long fiber amplifier were studied using backward and forward pumping. It was found that A=1.5 soliton pulses with a pulse width of 20 ps could be amplified over 18.2 km at a repetition rate of 5 GHz, where soliton narrowing to 16 ps was observed

Keywords

erbium; fibre lasers; optical communication equipment; optical dispersion; optical links; optical pumping; solitons; 1.535 micron; 1.552 micron; 10 dB; 16 ps; 20 dB; 20 ps; Er:fibre amplifiers; backward pumping; dispersion-shifted; doping concentrations; dual-shape-core-type amplifier; forward pumping configuration; grain characteristics; pulse width; soliton amplification; soliton narrowing; soliton pulse train; soliton transmission; Doping; Erbium; Erbium-doped fiber amplifier; Optical amplifiers; Optical fiber amplifiers; Optical fiber polarization; Optical fibers; Pulse amplifiers; Solitons; Stimulated emission;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.64345

Filename

64345