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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">科学家研发出硅基光子芯片 </h1> <p class="xg1"> 时间：2011-11-29 21:10<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(1074)</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>近年来，科学家在利用光束替代电子完成计算任务方面取得了很多成就，如今麻省理工学院（MIT）的研究人员又填补了一项空白，其能够基于标准硅材料制造光子芯片，而硅正是构成当前大部分电子产品的基础。</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">近年来，科学家在利用光束替代<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电子</a>完成计算任务方面取得了很多成就，如今麻省理工学院（MIT）的研究人员又填补了一项空白，其能够基于标准硅<a href="http://material.oecr.com" target="_blank" class="relatedlink">材料</a>制造光子芯片，而硅正是构成当前大部分电子<a href="http://b.oecr.com/sell" target="_blank" class="relatedlink">产品</a>的基础。<BR> <BR>在目前的<a href="http://ofc.oecr.com" target="_blank" class="relatedlink">通信</a>系统中，数据大都由光束携带通过光纤进行传输。一旦光学信号到达目的地，其将转化为电子形态，通过电子线路进行处理，然后再借助<a href="http://laser.oecr.com" target="_blank" class="relatedlink">激光</a>转换回光。新装置能够免除这些额外的电子转换步骤，直接处理光学信号。相关研究报告发表在11月13日的《自然—光子学》杂志网络版上。<BR><BR>该校材料科学和工程系的卡罗琳·罗丝教授表示，这个组件类似于电子二极管。二极管允许电流沿一个方向流动，并约束它不流向其他方向，在这种情况下，便形成了光的“单行道”。<BR><BR>为了研发这一装置，研究人员必须找到一种既透明又具有磁性的材料，而这两种特性很少能同时实现。他们最终采用了名为石榴石的材料。研究人员采用了石榴石<a href="http://opticalfilm.oecr.com" target="_blank" class="relatedlink">薄膜</a>沉积等方法，整个系统能基于现有的标准微芯片制成，制造过程因此得以大大简化。<BR><BR>新光学芯片可大幅提升数据传输系统的速度，因为光的传输速度大于电子，而且光学计算能借助多条光束，携带不同的多个数据流，无障碍地穿过单光纤或<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电路</a>。<BR><BR>罗丝表示，基于硅的新系统比基于其他材料的系统更容易实现商业化，因为很多人都知道怎么处理硅，这或将为开发下一代高速通信系统奠定基础。明尼苏达大学电子与计算机工程系的伯达尼·斯戴德教授也表示，这是光纤通信领域的一个巨大进展。这一成就十分重要，是首次将石榴石整合入硅装置中。 <DIV><FONT color="#808080" size=2><IMG src="http://www.oecr.com/xwb/images/bgimg/icon_logo.png"> 已同步至 <a href="http://ome.ac.cn/index.php?m=show&id=3385175654148793" target="_blank">update的微博</A></FONT></DIV></td></tr></table> <!--[diy=diycontentbottom]--><div id="diycontentbottom" class="area"></div><!--[/diy]--> <script 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