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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=56072&size=small" /></div> <h1 class="ph">新型光学装置为超级计算机提速 </h1> <p class="xg1"> 时间：2012-1-2 15:34<a class="zz" href="home.php?mod=space&uid=56072">作者：test4test</a> 阅读<em id="_viewnum">(1698)</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>研究人员们已经研制出一种新型光学装置，其体积极小，一个计算机芯片就足以安装数百万个这种装置。该装置可提高信息处理速度和能力，让超级计算机变得更快、更强大。</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"><P>研究人员们已经研制出一种新型光学装置，其体积极小，一个计算机芯片就足以安装数百万个这种装置。该装置可提高信息处理速度和能力，让超级计算机变得更快、更强大。<BR> <BR>这种“无源光学二极管”是由两个微小的硅质环状物制成的，环状物的直径仅有10微米，大约是人的一根头发直径的1/10。与其他光学二极管不同，这种“无源光学二极管”无需外部能源就能传播信号，还很容易被集成到计算机芯片上。<BR> <BR>珀杜大学<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电子</a>和计算机工程学副教授齐明豪说，这种二极管可进行“非交互性传输”，即单向信号传输，由此可具备信息处理能力。<BR> <BR>齐明豪解释说：“这种单向传输是逻辑<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电路</a>的最基本要素。因此，我们研制的这种二极管为实现光信息处理敞开了大门。”<BR> <BR>虽然光缆可用于跨洋和跨大洲传输海量数据，但其信息处理速度会变慢，传输数据也容易遭到网络攻击，因为光学信号须转换成电子信号才能在计算机上使用，反之亦然。<BR> <BR>研究人员说：“进行这种转换需要十分昂贵的设备。而你希望能做到的是，将这种光纤直接插入计算机而无需进行转换，那样的话，你就可以获得大量带宽，安全方面也会大有保障了。”<BR> <BR>研究人员樊丽(音)说：“这些二极管非常小，它们身上还有一些特性也很有吸引力。这些二极管或可成为未来光子信息处理芯片的零部件。” </P> <P><A href="http://www.oecr.com/data/attachment/portal/201201/02/1533564me3ssyhvxppy8nm.jpg" target=_blank><IMG src="http://www.oecr.com/data/attachment/portal/201201/02/1533564me3ssyhvxppy8nm.jpg"></A></P> <P>用这种新型光学二极管就无需进行光学-电子信号的转换了，因此有可能提高信息处理速度和安全度。这种装置现已接近投入商业生产。使用这种新型光学二极管将多个处理器连接起来，还有可能提高超级计算机的信息处理速度和能力。<BR> <BR>研究人员利奥·瓦尔盖塞说：“当今导致超级计算机受限的一个主要因素就是，系统内各种独立的超级芯片进行信息传输的速度和带宽。我们研制的这种光学二极管或可成为光互联<a href="http://ofc.oecr.com" target="_blank" class="relatedlink">通信</a>系统的一个组成部分，而该系统或许就可以解决这样的瓶颈问题了。”<BR> <BR><a href="http://laser.oecr.com" target="_blank" class="relatedlink">激光</a>器以通信用波长发出的红外线通过光导纤维，并由被称为“波导管”的微结构进行控制。红外线会按顺序通过两个硅质环状物，并在微型环状物内进行“非线性相互作用”。根据先进入哪个环状物，光束要么向前通过，要么向后耗散，从而完成单向传输。环状物还可通过“微加热器”加热的方式进行调整。微加热器会改变传输波长，因此可对范围广泛的波段加以处理。</P></td></tr></table> <!--[diy=diycontentbottom]--><div id="diycontentbottom" class="area"></div><!--[/diy]--> <script src="data/cache/home.js?eOg" 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