OPTICAL SOLITON COMMUNICATION-SYSTEM USING ERBIUM-DOPED FIBER AMPLIFIERS

被引:5
|
作者
SUZUKI, K
YAMADA, E
KUBOTA, H
NAKAZAWA, M
机构
[1] Optical Transmission Line Laboratory, NTT Telecommunication Field Systems R and D Center, Ibaraki-Ken
关键词
D O I
10.1080/01468039408202221
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Ultra-high speed optical soliton transmissions over 1000 km achieved through the use of lumped erbium-doped fiber amplifiers are described in detail. In a 10 Gbit/s experiment, a bit error rate (BER) of below 1 X 10(-13) was obtained with 2(20)-1 pseudorandom patterns and the power penalty was less than 0.1 dB. In a 20 Gbit/s experiment optical multiplexing and demultiplexing techniques were used and a BER of below 1 X 10(-12) was obtained with 2(23)-1 pseudorandom patterns under a penalty-free condition. A new technique for sending soliton pulses over ultralong distances is presented, which incorporates synchronous shaping and retiming using a high-speed optical modulator. Some experimental results for a transmission over 1 million km at 7.2 similar to 10 Gbit/s are described. This technique enables us to overcome the Gordon-Haus limit, the accumulation of amplified spontaneous emission (ASE), and the effect of interaction forces between adjacent solitons. It is also shown by computer runs and a simple analysis that a one hundred million km soliton transmission is possible by means of soliton transmission controls in the time and frequency domains. This means that limit-free transmission is possible.
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页码:45 / 64
页数:20
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