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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">NEC光学超级渠道技术实现大容量数据远距离传输 </h1> <p class="xg1"> 时间：2012-3-3 23:02<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(1072)</em> 评论: 0</p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>NEC日前成功研发一项光学超级渠道技术，可以每秒1Tb(Terabit)的速度，将大容量数据传送至1万公里远的超长距离；这项技术号称为全球首次成功将单一光源产生之1Tb的光学信号进行远距离传送的实验成果。</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content">NEC日前成功研发一项光学超级渠道技术，可以每秒1Tb(Terabit)的速度，将大容量数据传送至1万公里远的超长距离；这项技术号称为全球首次成功将单一光源产生之1Tb的光学信号进行远距离传送的实验成果。<br><br>此外，该实验藉由分波多工技术，可同时透过4条超级渠道进行数据传输，因此每秒最高可达到4 Tb的数据总传输量。NEC表示，透过光学超级渠道技术优势的充分运用，洲际间高速传送大容量数据，将不再是遥不可及的梦想。<br><br>以往不同的光波频段只能接受该频段的信号传输，NEC研发的光学超级渠道技术，可改变每个子载波讯号的相位 (描述讯号波形变化的度量单位)，并将各种讯号重叠至相同频段中。借此不仅能够让频宽得到最妥善的运用，更可加速单一光源的传输速率。<br><br>NEC指出，本次实验使用了既有铒元素光纤放大器与DP-QPSK光学调变技术，加上采用扩大核心超低损耗光纤与数字同步接收技术等，透过最先进硬件设备的整合，以确保大容量数据的高速传输。<br><br>此外，NEC已导入可容纳每秒40 Gb (Gigabit)传输速率的商用光纤海底电缆端点设备。在既有大规模光纤海底电缆系统上，采用现有传输速度4倍的40 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