光通信研究
光通信研究
광통신연구
STUDY ON OPTICAL COMMUNICATIONS
2010年
1期
57-59
,共3页
远程泵浦系统%掺铒光纤%噪声指数%泵浦放大器
遠程泵浦繫統%摻鉺光纖%譟聲指數%泵浦放大器
원정빙포계통%참이광섬%조성지수%빙포방대기
remote pumping system%Er-doped fiber%noise figure%pumping amplifier
文章介绍了一种用于密集波分复用(DWDM)超长距离通信系统中远程泵浦的传输设计方案.为了得到较大的增益与较小的噪声指数,我们选择了数值孔径小、掺杂浓度低的掺铒光纤,同时光路中还采用了对信号光全透、对泵浦光全反的二色镜来提高泵浦光的利用率.通过优化的光路设计,我们得到了增益＞17 dB、噪声指数＜7 dB的远程泵浦放大器.
文章介紹瞭一種用于密集波分複用(DWDM)超長距離通信繫統中遠程泵浦的傳輸設計方案.為瞭得到較大的增益與較小的譟聲指數,我們選擇瞭數值孔徑小、摻雜濃度低的摻鉺光纖,同時光路中還採用瞭對信號光全透、對泵浦光全反的二色鏡來提高泵浦光的利用率.通過優化的光路設計,我們得到瞭增益＞17 dB、譟聲指數＜7 dB的遠程泵浦放大器.
문장개소료일충용우밀집파분복용(DWDM)초장거리통신계통중원정빙포적전수설계방안.위료득도교대적증익여교소적조성지수,아문선택료수치공경소、참잡농도저적참이광섬,동시광로중환채용료대신호광전투、대빙포광전반적이색경래제고빙포광적이용솔.통과우화적광로설계,아문득도료증익＞17 dB、조성지수＜7 dB적원정빙포방대기.
This paper introduces a transmission design scheme for the remote pumping in DWDM ultra-long-haul communication systems. In order to obtain high gain and low noise figure,we adopt Er-doped fibers,which are characteristic of small numerical aperture and low doping concentration,and use a dichroscope that reflect all pumping light and transmits all signal light to increase the utilization ratio of the pumped light. Thanks to the optimized lightpath design,we obtain a remote pumping amplifier with a gain of >17 dB and noise figure of ＜7 dB.
