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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">我科学家首次实现集成光学定向放大器 </h1> <p class="xg1"> 时间：2018-5-9 09:43<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(1158)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=6604&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a></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>记者从中国科大获悉，该校郭光灿院士团队在非互易光子器件研究方面取得重要进展。</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"><div> 记者从中国科大获悉，该校郭光灿院士团队在非互易光子器件研究方面取得重要进展。该团队的董春华研究组首次利用回音壁模式微腔中腔光力的非互易特性，实现了全光控制的非互易多功能光子器件，并首次实现集成光学定向放大器。该成果5月4日在线发表在国际权威期刊《自然通讯》上。</div><div><br></div><div> 光在一般介质中具有双向传输的互易性，而打破这种互易性，即实现对光传输方向的非互易性，在经典和量子信息处理中具有重要意义。光环形器、隔离器、定向放大器等是典型的非互易器件。其中光环形器允许光以“环形”的方式传输，可用于光源保护、精密<a href="http://opticaltest.oecr.com" target="_blank" class="relatedlink">测量</a>，这种功能还可实现经典或量子计算或通讯中信号的双向处理，有利于提高信道容量与降低功耗。定向放大器也已经被证明在基于超导回路的量子计算中具有重要意义。</div><div><br></div><div> 最常见的光学非互易器件主要利用磁光<a href="http://material.oecr.com" target="_blank" class="relatedlink">晶体</a>的法拉第效应，但在器件集成化方面却面临着挑战，难点包括磁光<a href="http://material.oecr.com" target="_blank" class="relatedlink">材料</a>与传统<a href="http://sensor.oecr.com" target="_blank" class="relatedlink">半导体</a>材料不匹配、需要外加强磁场、在光频范围内磁光材料具有很高的传输损耗等。因此全光控制的片上光环形器、隔离器以及定向放大器一直是研究的热点。</div><div><br></div><div> 该科研团队在前期实验验证了回音壁模式微腔中腔光力的非互易特性的基础上，利用单个光力微腔与双波导耦合的体系，实现了多功能的光子器件，包括窄带滤波器，具有非互易功能的四端口光环形器与定向放大器，并且这些功能模式可以通过改变控制光来实现任意切换。该器件结构简单，原理具有普适性，甚至可实现单光子水平的光环形器，同时可推广到任一具有行波模式的光力学体系，包括微波超导器件和集成声学器件。</div><div><br></div><div><p microsoft="" yahei",="" simsun;="" background-color:="" rgb(255,="" 255,="" 255);="" text-align:="" center;"="" center;="" 255);"="" style="text-align: center; word-wrap: normal; margin: 0px; padding: 0px; color: rgb(143, 143, 143); font-family: Tahoma, "Microsoft Yahei", Simsun; background-color: rgb(255, 255, 255);"><b style="word-wrap: normal;"><font size="5" style="word-wrap: normal;">欢迎关注OECR公众号</font></b></p><p microsoft="" yahei",="" simsun;="" background-color:="" rgb(255,="" 255,="" 255);="" text-align:="" center;"="" center;="" 255);"="" style="text-align: center; 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