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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=61" 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=10207&size=small" /></div> <h1 class="ph">科学家提出新型亚波长慢光波导器 </h1> <p class="xg1"> 时间：2012-10-21 08:16<a class="zz" href="home.php?mod=space&uid=10207">作者：乏味</a> 阅读<em id="_viewnum">(1673)</em> 评论: 0</p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=61" 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>记者近日从中科院西安光学精密机械研究所获悉，该所瞬态光学与光子技术国家重点实验室刘雪明课题组提出了一种新型亚波长慢光波导器件。该器件可在实现脉冲速度减慢的同时，有效降低脉冲传播过程中产生的畸变。</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">记者近日从中科院西安光学精密<a href="http://machine.oecr.com" target="_blank" class="relatedlink">机械</a>研究所获悉，该所瞬态光学与光子技术国家重点实验室刘雪明课题组提出了一种新型亚波长慢光波导器件。该器件可在实现脉冲速度减慢的同时，有效降低脉冲传播过程中产生的畸变。相关成果先后发表于《应用<a href="http://theory.oecr.com" target="_blank" class="relatedlink">物理</a>快报》、《物理评论A》、《光学快讯》等国际<a href="http://theory.oecr.com" target="_blank" class="relatedlink">学术</a>期刊。<br> <br>据了解，慢光技术是一项使光速减慢以至于能够停滞或存储光的技术。该技术是克服全光缓存困难的最佳方式之一，在数据精密同步、全光交换、量子光学以及增强线性与非线性光学特性等领域有着广泛的用途。目前，基于微纳结构的慢光研究已成为光子学领域的热点问题。然而，以往提出的慢光器件对于入射脉冲有较大的二阶及高阶色散，导致脉冲被减慢的同时发生严重畸变，这给实际的应用带来不便。<br> <br>针对此问题，科研人员基于类电磁诱导透明现象，提出了一种新型的亚波长慢光波导器件。该慢光波导在实现脉冲速度减慢的同时，能有效降低脉冲传播过程中产生的畸变。研究发现，该波导可将脉冲畸变减小至2.12%。另外，通过调整波导的结构参数，该器件能在8.6THz（THz是电磁波频率单位，等于一百万兆赫）的带宽内得到平坦的色散关系，比目前已报道的结果提高了约6倍。同时，该器件有效减小了波导的高阶色散，具有良好的光缓存能力。 <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://api.t.sina.com.cn/1781120164/statuses/3503487709359266" target="_blank">乏味的微博</a></font></div></td></tr></table> <!--[diy=diycontentbottom]--><div id="diycontentbottom" class="area"></div><!--[/diy]--> <script src="data/cache/home.js?eOg" type="text/javascript"></script> <div id="click_div"><table cellpadding="0" cellspacing="0" class="atd"> <tr><td> <a href="http://club.oecr.com/home.php?mod=spacecp&ac=click&op=add&clickid=1&idtype=aid&id=2987&hash=bdc38c6624fd943957e5df60961276ea&handlekey=clickhandle" id="click_aid_2987_1" onclick="showWindow(this.id, this.href);doane(event);"> <img src="static/image/click/jidan.gif" alt="" /><br />鸡蛋</a> </td> <td> <a 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