ULTRALONG DISPERSION-SHIFTED ERBIUM-DOPED FIBER AMPLIFIER AND ITS APPLICATION TO SOLITON TRANSMISSION

被引：26

作者：

NAKAZAWA, M

KIMURA, Y

SUZUKI, K

机构：

[1] Lightwave Communication Laboratory, NTT Transmission Systems Laboratories, Tokai, Ibaraki-Ken

来源：

IEEE JOURNAL OF QUANTUM ELECTRONICS | 1990年 / 26卷 / 12期

关键词：

D O I：

10.1109/3.64345

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Distributed, dispersion-shifted erbium-doped fiber amplifiers with doping concentrations as low as 0.1-0.5 ppm (0.1-0.5 x 10(-4) wt%) have been fabricated and their gain characteristics studied for the purpose of soliton amplification for the first time. A 9.4 km dual-shape-core type amplifier with a 0.5 ppm concentration has a gain of more than 20 dB at 1.535-mu-m and 10 dB at 1.552-mu-m with a forward pumping configuration, and can successfully amplify and transmit a 20 ps soliton pulse train at 2.5 GHz repetition rate. Soliton transmission characteristics of an 18.2 km long fiber amplifier are studied using backward and forward pumping. It is found that A = 1.5 soliton pulses with a pulsewidth of 20 ps can be amplified over 18.2 km at a repetition rate of 5 GHz, where soliton narrowing to 16 ps is observed.

引用

页码：2103 / 2108

页数：6

共 17 条

[1] FABRICATION OF LONG LENGTHS OF LOW EXCESS LOSS ERBIUM-DOPED OPTICAL FIBER [J].