1.58 μm band fluoride-based Er3+-doped fibre amplifier for WDM transmission systems

被引：12
|
作者：
Ono, H [1 ]
Yamada, M [1 ]
Kanamori, T [1 ]
Sudo, S [1 ]
Ohishi, Y [1 ]
机构：
[1] NTT Corp, Optoelect Labs, Tokai, Ibaraki 31911, Japan
来源：
ELECTRONICS LETTERS | 1997年 / 33卷 / 17期
关键词：
fibre amplifiers; wavelength division multiplexing;
D O I：
10.1049/el:19970987
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：
An Er3+-doped fluoride-based fibre amplifier (F-EDFA) with flat amplification characteristics in the range 1565-1600nm was constructed for the first time. This provided a 5 nm wider flat amplification range than a silica-based Er3+-doped fibre amplifier (S-EDFA). A flattened signal gain of 30 dB was achieved with a gain excursion of 0.9dB for a WDM signal in this wavelength range. The Er3+-doped fluoride fibre (F-EDF) which achieved a signal gain of over 30dB without any noise figure degradation had a shorter optimum length than Er3+-doped silica fibre (S-EDF). Furthermore, F-EDF extended the amplification wavelength in the longer wavelength range by 2nm compared with S-EDF.
引用
收藏
页码：1471 / 1472
页数：2
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