基于高阶泵浦的10Gbps超长站距光传输系统研究与测试
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摘要
目前,国内超长站距光纤通信中应用的前向拉曼、后向拉曼均为一阶拉曼,采用14xx nm波段的泵浦光对1550 nm波段的信号光进行放大;遥泵放大系统也为一阶遥泵,直接将14xx nm的泵浦光传送到远程增益单元中对信号光进行放大。一阶泵浦放大技术在噪声指数及信号增益方面面临瓶颈,很难再继续提升中继距离。文章研究高阶泵浦技术,定制二阶拉曼、二阶遥泵光通信系统并搭建试验电路,系统连续运行24 h无误码,最高实现了10Gbps 479 km超长站距离光传输。
Nowadays forward Raman fiber amplifier(RFA), backward RFA and remote optically pumped amplifier(ROPA) used in ultra-long haul telecommunication optical transmission are 1st-order based, using 14 xxnm pump to amplify the 1550 nm signal. The 1st-order pump technology is meeting bottlenecks in prolonging the transmission distance, due to the certain noise figure and signal gain. In this paper, a 10 Gbps optical transmission system based on 2nd-order RFA and 2nd-order ROPA is established. The experimental system runs for 24 hours continuously without any code error, accomplishing a 479 km ultra-long haul repeaterless transmission.
Nowadays forward Raman fiber amplifier(RFA), backward RFA and remote optically pumped amplifier(ROPA) used in ultra-long haul telecommunication optical transmission are 1st-order based, using 14 xxnm pump to amplify the 1550 nm signal. The 1st-order pump technology is meeting bottlenecks in prolonging the transmission distance, due to the certain noise figure and signal gain. In this paper, a 10 Gbps optical transmission system based on 2nd-order RFA and 2nd-order ROPA is established. The experimental system runs for 24 hours continuously without any code error, accomplishing a 479 km ultra-long haul repeaterless transmission.
引文
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[3]童治,魏淮,简水生.光纤拉曼放大器噪声特性的研究[J].光通信研究,2001(3):59-62.TONG Zhi,WEI Huai,JIAN Shui-sheng.Research of noise properties of fiber Raman amplifier[J].Study on Optical communications,2001(3):59-62.
[4]陶在红,常建华,孙小菡,等.宽带光纤拉曼放大器的优化设计[J].电子器件,2003,26(4):444-446.TAO Zai-hong,CHANG Jian-hua,SUN Xiao-han,et al.Studies on optimal design for wide-band fiber raman amplifier[J].Journal of Electron Devices,2003,26(4):444-446.
[5]LCLIFFORD H,GOVIND P A.Raman amplification in fiber communication systems[M].California:U.S Academic Press,2005:39.
[6]熊煌,李树辰,张防熠,等.超长站距遥泵技术应用研究[C]//中国电机工程学会电力通信专业委员会学术会议,2011.
[7]项旻,王炜,张瑞强,等.遥泵系统无中继超长跨距传输的研究[J].光通信技术,2016,40(5):41-42.XIANG Min,WANG Wei,ZHANG Rui-qiang,et al.Research on ultra-long distance unrepeated transmission using remote optical pump amplifier system[J].Optical Communication Technology,2016,40(5):41-42.
[8]李倩茹,李洪顺,张程,等.二阶光纤喇曼放大器增益平坦性研究[J].光通信技术,2008,32(9):33-35.LI Qian-ru,LI Hong-shun,ZHANG Cheng,et al.Research on the gain flatness the fiber Raman amplifiers using multi-wavelength pumps[J].Optical Communication Technology,2008,32(9):33-35.
[9]臧可.高阶光纤拉曼放大器的特性研究[D].北京:北京邮电大学,2013.
[10]徐健,黄丽艳,喻杰奎,等.随路遥泵系统二阶泵浦方式泵浦性能分析与优化[J].光子学报,2015,44(10):110-114.XU Jian,HUANG Li-yan,YU Jie-kui,et al.Analysis and optimization of pump performance of ROPA system with channel associated structure using the 2nd-order pump[J].Acta Photonica Sinica,2015,44(10):110-114.
[11]FARALLI S,BOLOGNINI G,ANDRADE M,Unrepeated WDM transmission systems based on first-order and higher order raman-copumping technology[J].Journal of Lightwave Technology,2007,25(11):3519-3527.
[12]ITU-T.Optical interfaces for multichannel systems with optical amplifiers:ITU-T Rec.G692(10/98)[S].1998.
[13]李长春.色散补偿对SBS效应抑制作用的研究[J].光学与光电技术,2005,3(5):9-11.LI Chang-chun.SBS suppression by dispersion compensation[J].Optics&Optoelectronic Technology,2005,3(5):9-11.